CN114877079A

CN114877079A - Long service life's hydrovalve

Info

Publication number: CN114877079A
Application number: CN202210812194.XA
Authority: CN
Inventors: 李莉
Original assignee: BODEN HYDRAULICS CO LTD
Current assignee: BODEN HYDRAULICS CO LTD
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-08-09
Anticipated expiration: 2042-07-12
Also published as: CN114877079B

Abstract

The invention discloses a hydraulic valve with long service life, which comprises a valve body, wherein the lower end of the valve body is fixedly connected with an installation seat, a cylindrical valve cavity is formed in the valve body, a water inlet is formed in the outer wall of one side, close to the lower end, of the valve body and communicated with the valve cavity, a water outlet is formed in the middle position of the outer wall of one side, far away from the water inlet, of the valve body and communicated with the valve cavity, and connecting valve blocks are fixed on the outer walls, located at the water inlet and the water outlet, of the valve body. The invention avoids the valve core from blocking water flow instantly by prolonging the opening time of the valve core so as to reduce the generation of water hammer effect, simultaneously utilizes the air spring formed by the elastic air bag and the partition plate to weaken the water hammer effect, prolongs the service life of the hydraulic valve, detects the water pressure of the water flow in the process of opening and water supply of the hydraulic valve, avoids the hydraulic valve from working under the state of overpressure water flow, and scrapes off impurities or colloid adhered to the wall of the control cavity through the rotation of the scraper blade when the hydraulic valve is opened and closed, thereby ensuring the normal use of the hydraulic valve.

Description

Long service life's hydrovalve

Technical Field

The invention relates to the technical field of hydraulic valves, in particular to a hydraulic valve with long service life.

Background

The hydraulic valve is an automatic element operated by pressure oil, is controlled by the pressure oil of a distribution valve, can be used for controlling the on-off of a system and is commonly used for oil ways such as clamping, controlling, lubricating and the like; the existing hydraulic valve is mostly matched with electromagnetism to realize quick opening and closing, but because the speed is fast, the blocking water flow can be closed instantly to generate the water hammer effect, the impact force acts on parts such as a valve body and a valve core for a long time, the service life of the hydraulic valve can be reduced, and the hydraulic valve is used for a long time, impurities in oil or colloid separated out due to oxidation are adsorbed on the inner wall of the hydraulic valve, the use of the hydraulic valve is influenced, and therefore the hydraulic valve with long service life is provided.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a hydraulic valve with long service life.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a long service life's hydrovalve, includes the valve body, the lower extreme fixedly connected with mount pad of valve body, the valve pocket of cylinder type is seted up to the inside of valve body, the valve body has been close to and has been seted up water inlet and valve pocket intercommunication on one side outer wall of lower extreme, the middle part position that water inlet one side outer wall was kept away from to the valve body has been seted up delivery port and valve pocket intercommunication, the valve body all is fixed with the connection valve piece on being located the outer wall of water inlet and delivery port, the sealed sliding connection of valve cavity has the case, the top chamber wall intercommunication of constant voltage hole and valve pocket has been seted up on the outer wall of valve body.

Further, the cavity wall is fixedly connected with a baffle plate above the water inlet in a sealing manner, the baffle plate is provided with a horn-shaped communicating port at the center, the bottom of the valve core is of a round platform-shaped structure and is abutted against the communicating port of the baffle plate, the cylindrical liquid cavity is arranged in the valve core, the bottom of the valve core is provided with a plurality of liquid inlets and communicated with the liquid cavity, the valve core is arranged on the outer wall of the middle part and is equidistantly provided with a plurality of liquid outlets and communicated with the liquid cavity, the valve cavity is arranged at the position of the water outlet and is provided with an annular water guide groove, and the top of the valve core is higher than the annular water guide groove.

Further, a cylindrical control cavity is formed in the top of the valve body, a piston plate is connected in the control cavity in a sealing and sliding mode, a valve column with a rectangular cross section is fixedly connected to the center of the top of the valve core, the upper end of the valve column extends into the control cavity and is fixedly connected with the bottom face of the piston plate, and the valve column is connected with the cavity wall between the valve cavity and the control cavity in a sealing and sliding mode.

Furthermore, the valve body is arranged in the cavity wall at the top of the control cavity, an electromagnet is embedded in the cavity wall, hydraulic oil is filled in the control cavity, a plurality of oil flow holes are formed in the piston plate, and the piston plate is made of a magnetic material.

Furthermore, an annular guide groove is coaxially formed in the piston plate, a rotating ring is rotatably connected to the annular guide groove, a threaded rod is fixedly connected to the center of the top cavity wall of the control cavity, a lifting groove is formed in the piston plate and the valve column together, the lower end of the threaded rod is in threaded connection with the rotating ring, two connecting rods which are symmetrically distributed are fixedly connected to the outer annular surface of the rotating ring, a scraper is fixedly connected to one end, far away from the rotating ring, of each connecting rod, and the scraper is in contact with the cavity wall of the control cavity.

Further, the sealed sliding connection in top chamber wall that the liquid cavity is located the liquid outlet has the slide, the slide bar of two vertical and symmetries of fixedly connected with on the slide, the upper end of slide bar runs through case and common fixedly connected with a flat board, dull and stereotyped and valve pillar run through sliding connection, the cover is equipped with a spring that is connected with flat board and valve pocket top chamber wall on the valve pillar, the valve pocket is close to the both sides chamber wall at top and inlays and be equipped with a pair of conducting strip, the top of valve body is provided with the warning light, the warning light passes through the wire and is connected with a pair of conducting strip electricity, a busbar has been buried underground in the flat board.

Furthermore, the cavity wall of the valve cavity below the water inlet is connected with a partition plate in a sealing and sliding manner, and an elastic air bag is glued between the bottom surface of the partition plate and the cavity wall of the bottom of the valve cavity.

Furthermore, the elastic air bag is filled with antifreezing gas, and the antifreezing gas is trimethylamine gas.

The invention has the following advantages:

the hydraulic valve prolongs the opening and closing time of the hydraulic valve, avoids the phenomenon that a valve core blocks water flow instantly so as to reduce the generation of a water hammer effect, simultaneously utilizes an air spring formed by an elastic air bag and a partition plate to weaken the water hammer effect and prolong the service life of the hydraulic valve, detects the water pressure of the water flow in the process of opening and water supply of the hydraulic valve, avoids the hydraulic valve from working under an overpressure water flow state, scrapes impurities or colloid adhered to the wall of a control cavity through the rotation of a scraper blade when the hydraulic valve is opened and closed, ensures the normal use of the hydraulic valve, and also has an outdoor anti-freezing effect.

Drawings

FIG. 1 is a schematic diagram of a long-life hydraulic valve according to the present invention;

FIG. 2 is a schematic diagram of an internal structure of a long-life hydraulic valve according to the present invention;

FIG. 3 is a front cross-sectional view of a long-life hydraulic valve according to the present invention;

FIG. 4 is a schematic diagram of a valve core portion of a long-life hydraulic valve according to the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 3.

In the figure: the device comprises a valve body 1, a mounting seat 2, a valve cavity 3, a water inlet 4, a water outlet 5, a connecting valve block 6, a valve core 7, a baffle 8, a liquid cavity 9, a liquid inlet 10, a liquid outlet 11, an annular water guide groove 12, a communication port 13, a control cavity 14, a valve column 15, a piston plate 16, an oil flow hole 17, an electromagnet 18, a threaded rod 19, an annular guide groove 20, a rotating ring 21, a lifting groove 22, a connecting rod 23, a scraper 24, a sliding plate 25, a sliding rod 26, a flat plate 27, a spring 28, a conducting plate 29, a constant pressure hole 30, a warning light 31, a partition plate 32 and an elastic air bag 33.

Detailed Description

Referring to fig. 1-5, a long service life's hydrovalve, including valve body 1, the lower extreme fixedly connected with mount pad 2 of valve body 1, cylindrical valve chamber 3 has been seted up to the inside of valve body 1, valve body 1 has seted up on the outer wall of one side that is close to the lower extreme water inlet 4 and has been linked together with valve chamber 3, the middle part position of the outer wall of one side of valve body 1 far away from water inlet 4 has seted up delivery port 5 and has been linked together with valve chamber 3, valve body 1 all is fixed with connecting valve piece 6 on being located the outer wall of water inlet 4 and delivery port 5, sealed sliding connection has case 7 in the valve chamber 3, set up constant voltage hole 30 on the outer wall of valve body 1 and have been linked together with the top chamber wall of valve chamber 3.

Lie in water inlet 4 top chamber wall seal fixedly connected with baffle 8 in the valve pocket 3, baffle 8 central point puts the intercommunication mouth 13 of seting up loudspeaker form, the bottom of case 7 sets up to round platform column structure and offsets with the intercommunication mouth 13 of baffle 8, the liquid chamber 9 of cylinder type is seted up to the inside of case 7, a plurality of inlets 10 and liquid chamber 9 intercommunication have been seted up to the bottom of case 7, a plurality of liquid outlets 11 and liquid chamber 9 intercommunication have been seted up to the equidistance on the outer wall that case 7 is located the middle part, valve pocket 3 is located delivery port 5 and has been seted up annular guiding gutter 12, the top of case 7 is higher than annular guiding gutter 12.

Cylindrical control chamber 14 has been seted up at the top of valve body 1, sealed sliding connection has piston plate 16 in the control chamber 14, the top central point of case 7 puts fixedly connected with cross section for the valve post 15 of rectangle, the upper end of valve post 15 extends to in the control chamber 14 and piston plate 16's bottom surface fixed connection, the sealed sliding connection in chamber wall between valve post 15 and valve chamber 3 and the control chamber 14, the electro-magnet 18 has been buried underground in the chamber wall that valve body 1 is located the control chamber 14 top, control chamber 14 intussuseption is filled with hydraulic oil, a plurality of flow oilholes 17 have been seted up on the piston plate 16, piston plate 16 adopts magnetic material to make.

Annular guide slot 20 has been seted up to the coaxial ring-shaped guide slot 20 on the piston plate 16, it has swivel becket 21 to rotate to be connected with on the annular guide slot 20, top chamber wall central point of control chamber 14 puts fixedly connected with threaded rod 19, piston plate 16 has seted up lifting groove 22 with the valve post 15 jointly, the lower extreme of threaded rod 19 passes through threaded connection with swivel becket 21, fixedly connected with two symmetric distribution's connecting rod 23 on the outer anchor ring of swivel becket 21, the one end fixedly connected with scraper blade 24 of swivel becket 21 is kept away from to every connecting rod 23, scraper blade 24 contacts with the chamber wall of control chamber 14, the lead angle of screw thread part is greater than the pressure angle between swivel becket 21 and the threaded rod 19, avoid taking place the auto-lock and can't take place to rotate, the lubricating oil of screw thread department will also be regarded as to the hydraulic oil in the control chamber 14 simultaneously.

Liquid chamber 9 is located the sealed sliding connection of top chamber wall of liquid outlet 11 has slide 25, slide 25 is last fixedly connected with two vertical and symmetrical slide bars 26, slide bar 26's upper end runs through case 7 and common fixedly connected with a flat board 27, flat board 27 runs through sliding connection with valve post 15, the cover is equipped with a spring 28 that is connected with flat board 27 and the top chamber wall of valve chamber 3 on the valve post 15, the both sides chamber wall that the valve chamber 3 is close to the top inlays and is equipped with a pair of conducting strip 29, the top of valve body 1 is provided with warning light 31, warning light 31 is connected with a pair of conducting strip 29 electricity through the wire, a conducting strip has been buried underground in the flat board 27, the battery has in the warning light 31, when flat board 27 slides to conducting strip 29 place region, buried conducting strip both ends will contact with the conducting strip 29 of both sides, make warning light 31 circular telegram send out the police dispatch newspaper.

The cavity wall of the valve cavity 3 below the water inlet 4 is connected with a partition plate 32 in a sealing and sliding manner, an elastic air bag 33 is glued between the bottom surface of the partition plate 32 and the bottom cavity wall of the valve cavity 3 together, the elastic air bag 33 is filled with anti-freezing gas, the anti-freezing gas is trimethylamine gas, the boiling point of the trimethylamine is 3 ℃, and the trimethylamine is liquefied into trimethylamine solution when the temperature is lower than 3 ℃.

When the device is used, the direction of a magnetic field is changed by changing the direction of current of the electromagnet 18, so that different magnetism is controlled to act on the piston plate 16, when the hydraulic valve is required to be opened, the direction of the current is changed, the magnetic repulsion of the electromagnet 18 on the piston plate 16 is changed into magnetic attraction, the piston plate 16 is attracted to slide upwards, the valve core 7 is pulled upwards through the valve post 15 in the process of sliding the piston plate 16 upwards, hydraulic oil above the piston plate 16 flows to the lower part through the oil flow holes 17, the number of the oil flow holes 17 is limited, the flow rate in unit time is constant, and a certain time is required for the piston plate 16 to ascend from the bottom to the top, so that the sliding opening of the valve core 7 is not finished instantly, and the hydraulic valve has the advantages that when the valve is opened and closed, the generation of a water hammer effect can be reduced, the service life of the hydraulic valve is prolonged, when the valve core 7 leaves the baffle plate 8, water flow in the valve cavity 3 enters the liquid cavity 9 of the valve core 7 through the liquid inlet 10, the sliding plate 25 is pushed by water pressure, the spring 28 is extruded through the sliding rod 26 and the flat plate 27, at the moment, water pressure detection is conducted on water flow entering the hydraulic valve, if the water pressure is in a pressure range of the hydraulic valve, the flat plate 27 cannot be in contact with the conducting plate 29, if the water pressure is large, the flat plate 27 is pushed by the compression spring 28 to slide to the area where the conducting plate 29 is located, the conducting bar embedded in the flat plate 27 is in contact with the conducting plate 29, a warning lamp 31 is connected with a circuit to emit light, the hydraulic valve is prevented from working in an overpressure water flow state, replacement or adjustment is needed in time, the hydraulic valve is prevented from being in an overload state for a long time, the annular water guide groove 12 is communicated with the liquid outlet 11 after the valve core 7 continues to slide upwards, and the water flow leaves from the water outlet 5 through the liquid inlet 10, the liquid cavity 9, the liquid outlet 11 and the annular water guide groove 12.

When the hydraulic valve is opened and closed, the piston plate 16 slides up and down under the action of the threaded rod 19, the rotating ring 21 rotates around the threaded rod 19 to drive the two scraping plates 24 to rotate to scrape off impurities or colloid adhered to the cavity wall of the control cavity 14, so that the normal use of the hydraulic valve is avoided, when the hydraulic valve is closed, the blocked water flow in the valve cavity 3 impacts the partition plate 32 (namely, water hammer effect), the elastic air bag 33 and the partition plate 32 jointly form an air spring to release and weaken the impact, so that the damage caused by the water hammer effect is reduced, the service life of the hydraulic valve is further prolonged, when the hydraulic valve is used outdoors and is in winter, when the temperature is reduced and approaches zero DEG C, trimethylamine gas in the elastic air bag 33 is liquefied into liquid to reduce the whole volume, the elastic air bag 33 is changed into a concave-concave state and pulls the partition plate 32 to slide downwards, and the volume is increased to flow out of an expansion space when water in the valve cavity 3 is frozen, the valve body 1 is prevented from being damaged by water freezing, and the anti-freezing protection effect is achieved on the hydraulic valve.

Claims

1. The utility model provides a long service life's hydrovalve, includes valve body (1), its characterized in that, lower extreme fixedly connected with mount pad (2) of valve body (1), valve pocket (3) of cylinder type are seted up to the inside of valve body (1), valve body (1) have been close to and have been seted up water inlet (4) and valve pocket (3) intercommunication on one side outer wall of lower extreme, delivery port (5) and valve pocket (3) intercommunication have been seted up to the middle part position that water inlet (4) one side outer wall was kept away from in valve body (1), valve body (1) all is fixed with on being located the outer wall of water inlet (4) and delivery port (5) and connects valve block (6), valve pocket (3) inner seal sliding connection has case (7), set up the top chamber wall intercommunication of constant voltage hole (30) and valve pocket (3) on the outer wall of valve body (1).

2. The hydraulic valve with long service life according to claim 1, wherein a baffle plate (8) is fixedly connected with the cavity wall of the valve cavity (3) above the water inlet (4) in a sealing way, a horn-shaped communicating opening (13) is arranged at the central position of the baffle (8), the bottom of the valve core (7) is arranged to be a round platform-shaped structure and is abutted against the communicating opening (13) of the baffle (8), a cylindrical liquid cavity (9) is arranged inside the valve core (7), a plurality of liquid inlets (10) are arranged at the bottom of the valve core (7) and communicated with the liquid cavity (9), a plurality of liquid outlets (11) are arranged on the outer wall of the valve core (7) in the middle at equal intervals and communicated with the liquid cavity (9), the valve cavity (3) is provided with an annular water guide groove (12) at the position of the water outlet (5), and the top of the valve core (7) is higher than the annular water guide groove (12).

3. The hydraulic valve with the long service life according to claim 2, characterized in that a cylindrical control cavity (14) is formed in the top of the valve body (1), a piston plate (16) is connected in the control cavity (14) in a sealing and sliding manner, a valve column (15) with a rectangular cross section is fixedly connected to the center of the top of the valve core (7), the upper end of the valve column (15) extends into the control cavity (14) and is fixedly connected with the bottom surface of the piston plate (16), and the valve column (15) is connected with the cavity wall between the valve cavity (3) and the control cavity (14) in a sealing and sliding manner.

4. The hydraulic valve with the long service life according to claim 3, characterized in that an electromagnet (18) is embedded in the cavity wall of the valve body (1) at the top of the control cavity (14), the control cavity (14) is filled with hydraulic oil, the piston plate (16) is provided with a plurality of oil flow holes (17), and the piston plate (16) is made of magnetic materials.

5. The hydraulic valve with the long service life according to claim 4, wherein an annular guide groove (20) is coaxially formed in the piston plate (16), a rotating ring (21) is rotatably connected to the annular guide groove (20), a threaded rod (19) is fixedly connected to the center of the top cavity wall of the control cavity (14), a lifting groove (22) is formed in the piston plate (16) and the valve column (15) together, the lower end of the threaded rod (19) is connected with the rotating ring (21) through threads, two symmetrically-distributed connecting rods (23) are fixedly connected to the outer annular surface of the rotating ring (21), a scraper (24) is fixedly connected to one end, far away from the rotating ring (21), of each connecting rod (23), and the scraper (24) is in contact with the cavity wall of the control cavity (14).

6. A long-life hydraulic valve according to claim 5, characterized in that a sliding plate (25) is connected to the upper chamber wall of the liquid chamber (9) above the liquid outlet (11) in a sealing and sliding manner, two vertical and symmetrical sliding rods (26) are fixedly connected to the sliding plate (25), the upper end of the sliding rod (26) penetrates through the valve core (7) and is fixedly connected with a flat plate (27), the flat plate (27) is connected with the valve column (15) in a penetrating and sliding way, a spring (28) connected with the flat plate (27) and the cavity wall at the top of the valve cavity (3) is sleeved on the valve column (15), a pair of conducting strips (29) are embedded in the cavity walls of the two sides of the valve cavity (3) close to the top, the top of valve body (1) is provided with warning light (31), warning light (31) are connected with a pair of conducting strip (29) electricity through the wire, a conducting strip is buried underground in dull and stereotyped (27).

7. The long-service-life hydraulic valve according to claim 1, characterized in that a partition plate (32) is connected to the wall of the valve chamber (3) below the water inlet (4) in a sealing and sliding manner, and an elastic air bag (33) is glued between the bottom surface of the partition plate (32) and the wall of the bottom chamber of the valve chamber (3).

8. A long-life hydraulic valve according to claim 7, wherein the elastic air bag (33) is filled with an antifreeze gas, and the antifreeze gas is trimethylamine gas.