CN210715347U

CN210715347U - Pilot-operated overflow valve structure

Info

Publication number: CN210715347U
Application number: CN201921751484.8U
Authority: CN
Inventors: 郭凯; 王亮
Original assignee: Jinan Longli Hydraulic Device Co ltd
Current assignee: Jinan Longli Hydraulic Device Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-09
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a guide's formula overflow valve structure, concretely relates to hydraulic component technical field, the water-cooled double-layer valve comprises a valve body, first cavity has been seted up to the inside bottom of valve body, the second cavity that is located first cavity top is seted up to the inside of valve body, the mesopore that is located between first cavity and the second cavity is seted up to the inside of valve body, first cavity passes through the inside intercommunication of mesopore and second cavity. The utility model discloses a be equipped with first cavity, second cavity, mesopore, fan-shaped cavity, case, swing piece and overflow slotted hole, when pressure is great, liquid promotes swing piece, makes the case rotate, makes the inside intercommunication of overflow slotted hole and first cavity, changes current portable case into the rotary type, is favorable to making the guide's formula overflow valve when the case frequent switch, keeps good stability, is difficult for producing self-excited vibration and damage, has guaranteed the life of guide's formula overflow valve.

Description

Pilot-operated overflow valve structure

Technical Field

The utility model relates to a hydraulic component technical field, more specifically say, the utility model relates to a guide's formula overflow valve structure.

Background

The pilot overflow valve is a hydraulic pressure control valve, mainly plays roles of pressure stabilization overflow and safety protection in hydraulic equipment, can avoid accidents caused by overload of a hydraulic system, and can also be used for generating backpressure to ensure that an execution element moves in balance.

However, when the pressure of the existing pilot-operated overflow valve is unstable, the valve core frequently moves to open and close the oil circuit, so that the stability is poor, self-excited vibration is generated, the valve core is easy to damage, and the service life is shortened.

Disclosure of Invention

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a guide's formula overflow valve structure, through being equipped with first cavity, the second cavity, the mesopore, fan-shaped cavity, the case, swing piece and overflow slotted hole, when pressure is great, liquid promotes swing piece, make the case rotate, make the inside intercommunication of overflow slotted hole and first cavity, change current portable case into the rotary type, be favorable to making guide's formula overflow valve when the case frequently switches, keep good stability, difficult production self-excited vibration and damage, the life of guide's formula overflow valve has been guaranteed.

In order to achieve the above object, the utility model provides a following technical scheme: a pilot operated overflow valve structure comprises a valve body, wherein a first cavity is formed in the bottom end of the interior of the valve body, a second cavity located above the first cavity is formed in the valve body, a middle hole located between the first cavity and the second cavity is formed in the valve body, the first cavity is communicated with the interior of the second cavity through the middle hole, a fan-shaped cavity located at one end of the second cavity is formed in the valve body, and the fan-shaped cavity is communicated with the interiors of the first cavity and the second cavity respectively;

the valve comprises a first cavity, a valve body, a valve core, a swinging block, a valve core and a swinging groove hole, wherein the valve core is arranged on one side inside the first cavity, the outer side wall of the valve core is movably connected with the inner side wall of the valve body, the swinging block is arranged inside the fan-shaped cavity, one end of the swinging block is fixedly connected with the outer side wall of the valve core, the other end of the swinging block is movably connected with the.

In a preferred embodiment, an adjusting cavity is formed in one end of the valve core, an adjusting shaft is arranged in the middle of the inner side of the adjusting cavity, the upper end of the adjusting shaft is fixedly connected with the upper wall of the adjusting cavity, and the bottom end of the adjusting shaft extends to the outer side of the valve body.

In a preferred embodiment, the outside cover of regulating spindle is equipped with the vortex spring, the inboard one end of vortex spring and the lateral wall fixed connection of regulating spindle, the one end in the vortex spring outside and the inside wall fixed connection who adjusts the chamber, the bottom cover of regulating spindle is equipped with the nut of screwing, the nut of screwing passes through screw thread swing joint with the regulating spindle.

In a preferred embodiment, one end of the valve core is provided with a water outlet cavity far away from one side of the adjusting cavity, the outer side of the valve body is provided with a water outlet connector, the inside of the water outlet connector is communicated with the inside of the water outlet cavity, one end of the valve body is provided with an overflow pipe close to one side of the valve core, the other end of the valve body is provided with a water inlet, and the overflow pipe and the inside of the water inlet are both communicated with the inside of the first cavity.

In a preferred embodiment, a communication hole close to one end of the water inlet is formed in one side above the valve body, a connecting seat is arranged above the valve body, the bottom end of the connecting seat is fixedly connected with the upper end of the valve body, the connecting seat is communicated with the inside of the second cavity through the communication hole, an I-shaped rod is arranged on the inner side of the connecting seat, and the bottom end of the I-shaped rod is movably connected with the inner side wall of the valve body.

In a preferred embodiment, a rotating seat is arranged above the connecting seat, an inner side wall of the bottom end of the rotating seat is movably connected with an outer side wall of the upper end of the connecting seat through threads, an adjusting block is arranged on the inner side of the rotating seat, one side of the upper end of the adjusting block is fixedly connected with the inner side wall of the rotating seat, and the outer side wall of the bottom end of the adjusting block is movably connected with the inner side wall of the connecting seat.

In a preferred embodiment, the outer side of the I-shaped rod is sleeved with an adjusting spring, the bottom end of the adjusting spring is fixedly connected with the upper wall of the bottom end of the I-shaped rod, and the upper end of the adjusting spring is fixedly connected with the bottom end of the adjusting block.

In a preferred embodiment, a buzzer is arranged above the rotating seat, the bottom end of the buzzer is fixedly mounted with the upper end of the rotating seat, a switch positioned above the I-shaped rod is arranged below the buzzer, the upper end of the switch is fixedly mounted with the bottom end of the buzzer, and the buzzer is electrically connected with the switch.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a through being equipped with first cavity, second cavity, mesopore, fan-shaped cavity, case, swing piece and overflow slotted hole, when pressure is great, liquid promotes the swing piece, makes the case rotate, makes the overflow slotted hole communicate with the inside of first cavity, changes current portable case into rotary type, compares with prior art, is favorable to making the pilot-operated overflow valve when the case frequently switches on and off, keeps good stability, is difficult for producing self-excited vibration and damage, has guaranteed the life of pilot-operated overflow valve;

2. the utility model discloses a be equipped with intercommunicating pore, connecting seat, worker shape pole, rotate seat, adjusting block, adjustment spring, bee calling organ and switch, when pressure increases, liquid promotes worker shape pole rebound to make worker shape pole open the switch, make bee calling organ send out the police dispatch newspaper, compare with prior art, be favorable to sending out the police dispatch newspaper when leading formula overflow valve pressure rises to maximum operating pressure, remind the staff, guaranteed the security of hydraulic circuit, be difficult to suffer destruction.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2 according to the present invention.

Fig. 4 is a cross-sectional view taken along line B-B of fig. 3 according to the present invention.

Fig. 5 is a partial enlarged view of the point C in fig. 3 according to the present invention.

The reference signs are: 1 valve body, 2 first cavity, 21 second cavity, 22 middle hole, 23 fan-shaped cavity, 3 valve core, 31 swinging block, 4 overflow slotted hole, 5 adjusting cavity, 51 adjusting shaft, 52 vortex spring, 53 screwing nut, 6 water outlet cavity, 61 water outlet joint, 7 overflow pipe, 71 water inlet, 8 communicating hole, 9 connecting seat, 91H-shaped rod 100 rotating seat, 101 adjusting block, 110 adjusting spring, 120 buzzer and 121 switch.

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.

The utility model provides a guide overflow valve structure, including valve body 1, the bottom of valve body 1 inside has seted up first cavity 2, the inside of valve body 1 has seted up the second cavity 21 that is located the first cavity 2 top, the inside of valve body 1 has seted up the mesopore 22 that is located between first cavity 2 and the second cavity 21, first cavity 2 communicates with the inside of second cavity 21 through mesopore 22, the inside of valve body 1 has seted up the fan-shaped cavity 23 that is located the one end of second cavity 21, fan-shaped cavity 23 communicates with the inside of first cavity 2 and second cavity 21 respectively;

one side of the interior of the first cavity 2 is provided with a valve core 3, the outer side wall of the valve core 3 is movably connected with the inner side wall of the valve body 1, the interior of the fan-shaped cavity 23 is provided with a swing block 31, one end of the swing block 31 is fixedly connected with the outer side wall of the valve core 3, the other end of the swing block 31 is movably connected with the inner side wall of the fan-shaped cavity 23, and the middle of the valve core 3 is provided with an overflow slot hole 4.

An adjusting cavity 5 is formed in one end of the valve core 3, an adjusting shaft 51 is arranged in the middle of the inner side of the adjusting cavity 5, the upper end of the adjusting shaft 51 is fixedly connected with the upper wall of the adjusting cavity 5, and the bottom end of the adjusting shaft 51 extends to the outer side of the valve body 1.

The outside cover of regulating spindle 51 is equipped with vortex spring 52, the inboard one end of vortex spring 52 and regulating spindle 51's lateral wall fixed connection, the one end in the vortex spring 52 outside and the inside wall fixed connection who adjusts chamber 5, the bottom cover of regulating spindle 51 is equipped with nut 53 of screwing, nut 53 of screwing passes through screw thread swing joint with regulating spindle 51.

The water outlet cavity 6 far away from one side of the adjusting cavity 5 is formed in one end of the valve core 3, the water outlet connector 61 is arranged on the outer side of the valve body 1, the inside of the water outlet connector 61 is communicated with the inside of the water outlet cavity 6, the overflow pipe 7 close to one side of the valve core 3 is arranged at one end of the valve body 1, the water inlet 71 is formed in the other end of the valve body 1, and the overflow pipe 7 and the inside of the water inlet 71 are communicated with the inside of the first cavity 2.

As shown in fig. 1 to 4, the embodiment specifically is as follows: when the pilot overflow valve is used, liquid is introduced from the water inlet 71, the liquid enters the first cavity 2, a part of the liquid enters the second cavity 21 through the middle hole 22 and contacts with one side of the oscillating block 31, other liquid passes through the water outlet cavity 6 and then flows out from the water outlet connector 61, when the pressure rises to a set pressure, the liquid in the middle hole 22 pushes the oscillating block 31, the oscillating block 31 oscillates in the fan-shaped cavity 23, and meanwhile, the oscillating block 31 drives the valve core 3 to rotate, so that the overflow slot hole 4 is communicated with the inside of the first cavity 2, the liquid in the first cavity 2 flows out from the overflow pipe 7 through the overflow slot hole 4 to achieve the effect of pressure stabilization and overflow, the pressure value can be set through the rotation of the scroll spring 52, during adjustment, the screwing nut 53 is rotated to loosen the screwing nut 53, then the adjusting shaft 51 is rotated, the adjusting shaft 51 drives the scroll spring 52 to rotate so as to adjust the elastic potential energy of the scroll spring 52, after the adjustment is completed, the screwing nut 53 is rotated to tightly press the screwing nut 53 and the side wall of the valve body 1, the screwing steering direction of the screwing nut 53 is set to be the same as the steering direction returned by the adjusting shaft 51, so that after the screwing nut 53 is tightly pressed, the adjusting shaft 51 can not rotate under the action of the elastic force of the scroll spring 52, when the pressure in the first cavity 2 is reduced, the valve core 3 is returned to the initial position under the action of the elastic force of the scroll spring 52, and the existing movable valve core 3 is changed into the rotary type, namely, the pilot operated overflow valve is favorable for keeping good stability when the valve core 3 is frequently, the pilot overflow valve has the advantages that self-excited vibration and damage are not easily generated, the service life of the pilot overflow valve is guaranteed, and the problems that when the pressure of the existing pilot overflow valve is unstable, the valve core frequently moves, an oil way is opened and closed, so that the stability is poor, self-excited vibration is generated, the valve core is easily damaged, and the service life is shortened are solved.

The intercommunicating pore 8 that is close to water inlet 71 one end is seted up to one side of valve body 1 top, the top of valve body 1 is equipped with connecting seat 9, the bottom of connecting seat 9 and the upper end fixed connection of valve body 1, connecting seat 9 passes through intercommunicating pore 8 and the inside intercommunication of second cavity 21, the inboard of connecting seat 9 is equipped with worker's shape pole 91, the bottom of worker's shape pole 91 and the inside wall swing joint of valve body 1.

The top of connecting seat 9 is equipped with rotates seat 100, the inside wall of rotating seat 100 bottom passes through screw thread swing joint with the lateral wall of connecting seat 9 upper end the inboard of rotating seat 100 is equipped with adjusting block 101, one side of adjusting block 101 upper end and the inside wall fixed connection who rotates seat 100, the lateral wall of adjusting block 101 bottom and the inside wall swing joint of connecting seat 9.

The outer side cover of worker shape pole 91 is equipped with adjustment spring 110, the bottom of adjustment spring 110 and the upper wall fixed connection of worker shape pole 91 bottom, the upper end of adjustment spring 110 and the bottom fixed connection of adjusting block 101.

Rotate the top of seat 100 and be equipped with bee calling organ 120, bee calling organ 120's bottom and the upper end fixed mounting who rotates seat 100, bee calling organ 120's below is equipped with the switch 121 that is located I-shaped pole 91 top, the upper end of switch 121 and bee calling organ 120's bottom fixed mounting, bee calling organ 120 and switch 121 electric connection.

As shown in fig. 1 to 3 and fig. 5, the embodiment specifically is: when the pressure in the second cavity 21 rises, the liquid enters the inside of the connecting seat 9 through the communicating hole 8 and pushes the H-shaped rod 91 to move upwards, when the pressure rises to the maximum working pressure, the liquid pushes the H-shaped rod 91 to touch the switch 121, so that the buzzer 120 is turned on to give an alarm, due to the arrangement of the adjusting spring 110, the pressure value during the alarm can be adjusted, the rotating seat 100 is rotated upwards or downwards, the rotating seat 100 drives the adjusting block 101 to move downwards or downwards, so that the pressing force of the adjusting block 101 is reduced or increased to achieve the adjustment of the alarm pressure value, namely, the alarm is sent when the pressure of the pilot operated overflow valve rises to the maximum working pressure, the worker is reminded, the safety of a hydraulic circuit is ensured, and the alarm is not easy to damage, the hydraulic circuit is easily damaged.

The utility model discloses the theory of operation:

referring to the attached drawings 1-4 of the specification, when a pilot operated overflow valve is used, liquid is introduced from a water inlet 71, the liquid enters the first cavity 2 and the second cavity 21, other liquid passes through a water outlet cavity 6 and then flows out from a water outlet joint 61, when the pressure rises to a set pressure, the liquid inside a middle hole 22 pushes a swing block 31, the swing block 31 swings inside a fan-shaped cavity 23, meanwhile, the swing block 31 drives a valve core 3 to rotate, so that an overflow groove hole 4 is communicated with the inside of the first cavity 2, the liquid inside the first cavity 2 flows out from an overflow pipe 7 through the overflow groove hole 4, so as to achieve the effect of pressure stabilization overflow, the pressure value can be set through the setting of a vortex spring 52 by rotating, during adjustment, a screwing nut 53 is rotated to loosen the nut 53, then an adjusting shaft 51 is rotated, the adjusting shaft 51 drives the vortex spring 52 to rotate so as to adjust the elastic potential energy of the vortex spring 52, after the adjustment is completed, the screwing nut 53 is rotated to enable the screwing nut 53 to be tightly pressed against the side wall of the valve body 1, the screwing direction of the screwing nut 53 is set to be the same as the returning direction of the adjusting shaft 51, so that after the screwing nut 53 is tightly pressed, the adjusting shaft 51 cannot rotate under the action of the elasticity of the scroll spring 52, and when the pressure in the first cavity 2 is reduced, the valve core 3 returns to the initial position under the action of the elasticity of the scroll spring 52;

further, referring to fig. 1-3 and 5 of the specification, when the pressure in the second cavity 21 rises, the liquid enters the inside of the connecting seat 9 through the communicating hole 8 and pushes the i-shaped rod 91 to move upwards, when the pressure rises to the maximum working pressure, the liquid pushes the i-shaped rod 91 to touch the switch 121, so that the buzzer 120 is turned on to give an alarm, and due to the arrangement of the adjusting spring 110, the pressure value during the alarm can be adjusted, the rotating seat 100 is rotated upwards or downwards, so that the rotating seat 100 drives the adjusting block 101 to move downwards or downwards, and the pressing force of the adjusting block 101 is reduced or increased, so as to adjust the alarm pressure value.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a pilot-operated overflow valve structure, includes valve body (1), its characterized in that: the bottom end inside the valve body (1) is provided with a first cavity (2), the inside of the valve body (1) is provided with a second cavity (21) located above the first cavity (2), the inside of the valve body (1) is provided with a middle hole (22) located between the first cavity (2) and the second cavity (21), the first cavity (2) is communicated with the inside of the second cavity (21) through the middle hole (22), the inside of the valve body (1) is provided with a fan-shaped cavity (23) located at one end of the second cavity (21), and the fan-shaped cavity (23) is respectively communicated with the insides of the first cavity (2) and the second cavity (21);

one side of the interior of the first cavity (2) is provided with a valve core (3), the outer side wall of the valve core (3) is movably connected with the inner side wall of the valve body (1), the interior of the fan-shaped cavity (23) is provided with a swinging block (31), one end of the swinging block (31) is fixedly connected with the outer side wall of the valve core (3), the other end of the swinging block (31) is movably connected with the inner side wall of the fan-shaped cavity (23), and the middle of the valve core (3) is provided with an overflow slot hole (4).

2. The pilot operated relief valve structure according to claim 1, characterized in that: an adjusting cavity (5) is formed in one end of the valve core (3), an adjusting shaft (51) is arranged in the middle of the inner side of the adjusting cavity (5), the upper end of the adjusting shaft (51) is fixedly connected with the upper wall of the adjusting cavity (5), and the bottom end of the adjusting shaft (51) extends to the outer side of the valve body (1).

3. The pilot operated relief valve structure according to claim 2, characterized in that: the outside cover of regulating spindle (51) is equipped with vortex spring (52), the inboard one end of vortex spring (52) and the lateral wall fixed connection of regulating spindle (51), the one end in the vortex spring (52) outside and the inside wall fixed connection of adjusting chamber (5), the bottom cover of regulating spindle (51) is equipped with nut (53) of screwing, nut (53) of screwing passes through screw thread swing joint with regulating spindle (51).

4. The pilot operated relief valve structure according to claim 2, characterized in that: the water outlet cavity (6) far away from one side of the adjusting cavity (5) is formed in one end of the valve core (3), a water outlet connector (61) is arranged on the outer side of the valve body (1), the inside of the water outlet connector (61) is communicated with the inside of the water outlet cavity (6), an overflow pipe (7) close to one side of the valve core (3) is arranged at one end of the valve body (1), a water inlet (71) is formed in the other end of the valve body (1), and the overflow pipe (7) and the inside of the water inlet (71) are communicated with the inside of the first cavity (2).

5. The pilot operated relief valve structure according to claim 4, wherein: intercommunicating pore (8) that are close to water inlet (71) one end are seted up to one side of valve body (1) top, the top of valve body (1) is equipped with connecting seat (9), the bottom of connecting seat (9) and the upper end fixed connection of valve body (1), connecting seat (9) are through the inside intercommunication of intercommunicating pore (8) and second cavity (21), the inboard of connecting seat (9) is equipped with worker's shape pole (91), the bottom of worker's shape pole (91) and the inside wall swing joint of valve body (1).

6. The pilot operated relief valve structure according to claim 5, characterized in that: the top of connecting seat (9) is equipped with rotates seat (100), the inside wall that rotates seat (100) bottom passes through screw thread swing joint with the lateral wall of connecting seat (9) upper end the inboard of rotating seat (100) is equipped with adjusting block (101), one side of adjusting block (101) upper end and the inside wall fixed connection who rotates seat (100), the lateral wall of adjusting block (101) bottom and the inside wall swing joint of connecting seat (9).

7. The pilot operated relief valve structure according to claim 6, wherein: the outside cover of worker shape pole (91) is equipped with adjustment spring (110), the bottom of adjustment spring (110) and the upper wall fixed connection of worker shape pole (91) bottom, the upper end of adjustment spring (110) and the bottom fixed connection of adjusting block (101).

8. The pilot operated relief valve structure according to claim 6, wherein: rotate the top of seat (100) and be equipped with bee calling organ (120), the bottom of bee calling organ (120) and the upper end fixed mounting who rotates seat (100), the below of bee calling organ (120) is equipped with switch (121) that are located worker shape pole (91) top, the upper end of switch (121) and the bottom fixed mounting of bee calling organ (120), bee calling organ (120) and switch (121) electric connection.