CN213839715U

CN213839715U - Mechanical safety overflow valve

Info

Publication number: CN213839715U
Application number: CN202022784412.2U
Authority: CN
Inventors: 刘阳
Original assignee: Hunan Frutiger Mechanical Equipment Co ltd
Current assignee: Hunan Frutiger Mechanical Equipment Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-30
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a mechanical type safety overflow valve, including valve body, case and pressure-bearing piece, be equipped with the cavity in the valve body, the case with the pressure-bearing piece is located in the cavity, be equipped with on the valve body with the inlet opening and the overflow hole of cavity intercommunication, inlet opening and pressure-bearing piece arrange relatively in the both ends of case, the overflow hole is arranged between inlet opening and pressure-bearing piece. The utility model discloses a set pressure and the pressure of releasing of valve are set for to the spring that sets up the bearing piece and replace traditional mechanical type safety overflow valve to set for, when hydraulic system's fluid pressure value exceeded the regulation scope, can cut off the bearing piece through the case, and the liquid of releasing protects hydraulic system, can realize under the same function condition, the utility model discloses a mechanical type safety overflow valve has advantages such as simple structure is compact, adaptability is wide, with low costs.

Description

Mechanical safety overflow valve

Technical Field

The utility model relates to a valve field refers in particular to a mechanical type safety overflow valve.

Background

The safety overflow valve is a hydraulic pressure control valve, and mainly plays the roles of constant pressure overflow, pressure stabilization, system unloading and safety protection in hydraulic equipment. The traditional mechanical safety overflow valve sets the setting pressure and the relief pressure of the valve through the resistance of a spring, and is complex in structure and inconvenient to replace.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in: aiming at the defects of the prior art, the mechanical safety overflow valve which is simple in structure and can protect the safety of an overflow system is provided.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the mechanical safety overflow valve comprises a valve body, a valve core and a pressure-bearing sheet, wherein a cavity is arranged in the valve body, the valve core and the pressure-bearing sheet are arranged in the cavity, a water inlet hole and an overflow hole which are communicated with the cavity are formed in the valve body, the water inlet hole and the pressure-bearing sheet are arranged at two ends of the valve core relatively, and the overflow hole is arranged between the water inlet hole and the pressure-bearing sheet.

As a further improvement of the above technical solution:

the valve body is internally provided with a positioning step, the pressure-bearing piece is arranged at the positioning step and is matched with a pressing piece, a gland is arranged in the valve body, one end of the pressing piece is abutted against the pressure-bearing piece, and the other end of the pressing piece is abutted against the gland.

One end of the valve core close to the pressure bearing sheet is provided with a spine part.

The gland is in threaded connection with the valve body.

The compressing piece is a compression ring, and the gland is provided with a vent hole.

The valve body is provided with a cover plate, the water inlet hole is formed in the cover plate, and a sealing ring is arranged between the cover plate and the valve core.

The overflow hole is a threaded hole which can be in threaded connection with the screw rod and the discharge pipe.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a mechanical type safety overflow valve sets for setting pressure and the pressure of releasing of valve through the spring that sets up the bearing piece and replace traditional mechanical type safety overflow valve setting, when hydraulic system's fluid pressure value exceeded the regulation scope, can cut off the bearing piece through the case, and the liquid of releasing protects hydraulic system under can realizing the same functional condition, the utility model discloses a mechanical type safety overflow valve has advantages such as simple structure is compact, adaptability is wide, with low costs.

Drawings

Fig. 1 is a schematic structural diagram of the mechanical safety overflow valve in a use state.

Fig. 2 is a schematic structural diagram of the mechanical safety overflow valve in a transportation state.

The reference numerals in the figures denote: 1. a cover plate; 2. a seal ring; 3. a valve core; 4. a valve body; 5. a pressure bearing sheet; 6. a compression member; 7. a gland; 8. a chamber; 9. a water inlet hole; 10. an overflow aperture; 11. a vent hole; 12. a discharge pipe; 13. a screw;

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

As shown in fig. 1 and 2, the mechanical safety overflow valve of this embodiment includes a valve body 4, a valve core 3 and a pressure-bearing sheet 5, a cavity 8 is provided in the valve body 4, the valve core 3 and the pressure-bearing sheet 5 are provided in the cavity 8, a water inlet 9 and an overflow hole 10 communicated with the cavity 8 are provided on the valve body 4, the water inlet 9 and the pressure-bearing sheet 5 are relatively arranged at two ends of the valve core 3, and the overflow hole 10 is arranged between the water inlet 9 and the pressure-bearing sheet 5.

This mechanical type safety overflow valve sets for the pressure of adjusting and the pressure of releasing of valve through setting up the spring that pressure-bearing piece 5 replaced traditional mechanical type safety overflow valve set up, when hydraulic system's fluid pressure value exceeded the regulation scope, can cut off pressure-bearing piece 5 through case 3, the liquid of releasing, protection hydraulic system, under can realizing the same function condition, this mechanical type safety overflow valve has simple structure compactness, adaptability is wide, advantage such as with low costs.

In this embodiment, be equipped with the location step in the valve body 4, location step department is located and is furnished with to compress tightly piece 6 to pressure-bearing piece 5, is equipped with gland 7 in the valve body 4, compresses tightly 6 one end and 5 butts of pressure-bearing piece, the other end and 7 butts of gland. The pressing piece 6 can apply pressing force to the pressure-bearing sheet 5 when the valve core 3 applies pressure to the pressure-bearing sheet 5, so that the pressure-bearing sheet 5 is not displaced, the valve core 3 can be effectively pushed by liquid pressure to cut the pressure-bearing sheet 5, and the liquid pressure can be released in time.

In this embodiment, one end of the valve core 3 close to the bearing plate 5 has a sharp point, such as a sharp corner. The main purpose is that when the hydraulic pressure is too high, the sharp thorn portion can puncture the pressure-bearing piece 5 more intensively and more rapidly, so that the purpose of pressure relief protection is achieved.

In this embodiment, the gland 7 is screwed to the valve body 4. Adopt threaded connection rather than integral type manufacturing for can make things convenient for quick change operation when the overflow valve breaks down or has the part to damage, improve maintenance efficiency, extension valve body whole life-span.

In this embodiment, the pressing member 6 is a pressing ring, and the pressing cover 7 is provided with a vent hole 11. The vent hole 11 is arranged to keep the pressure of the overflow valve smooth in the working state, when the valve core 3 cuts off the pressure bearing sheet 5 and moves to the right, the gas on the right side of the cavity 8 can be discharged through the inside of the pressure ring and the vent hole 11 in sequence, the moving resistance of the valve core 3 is reduced, the moving speed is increased, liquid can flow out of the overflow hole 10 rapidly, and the safety of a hydraulic system is protected.

In this embodiment, be equipped with apron 1 on the valve body 4, inlet opening 9 is located on apron 1, is equipped with sealing washer 2 between apron 1 and the case 3. The sealing ring 2 is arranged to ensure that liquid cannot flow out of the overflow valve when the liquid pressure is within a normal range, and the stability of a hydraulic system can be maintained.

In this embodiment, the mechanical safety overflow valve further includes a screw 13 and a discharge pipe 12 with external threads, and the overflow hole 10 is a threaded hole capable of being in threaded connection with the screw 13 and the discharge pipe 12. When the overflow valve operates normally, the discharge pipe 12 is connected with the overflow hole 10, liquid does not directly flow out of the threaded hole, the threaded hole can be protected, the threaded hole is prevented from being abraded under the liquid flushing state, the installation relation between the threaded hole and other parts is prevented from being damaged, and replacement is not facilitated. When the overflow valve is in a transportation state, the screw 13 is connected with the overflow valve 10, so that the stability and the safety of the overflow valve in the transportation state can be ensured.

The utility model discloses mechanical type safety overflow valve's working process as follows: install mechanical type safety overflow valve among hydraulic system, when hydraulic system normally worked, the sealing washer 2 between valve body 4 and the case 2 that is close to inlet opening 9 one end guarantees not to let liquid flow out from the overflow valve, when hydraulic system's fluid pressure value exceeded the regulation scope, liquid produced pressure to the terminal surface of case 3 through inlet opening 9, the spine portion of case 3 has the shearing force to bearing piece 5, after bearing piece 5 was cut off, case 3 moved to gland 7 to the right side, liquid flows out from the bleeder 12 with overflow opening 10 threaded connection, pressure is released, hydraulic system has in time been protected. When the overflow valve is in a transportation state, one end of the screw rod 13 is in threaded connection with the overflow hole 10, and the other end of the screw rod is fixedly connected with other components, so that the transportation safety is ensured.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a mechanical type safety overflow valve which characterized in that: the pressure-bearing valve comprises a valve body (4), a valve core (3) and a pressure-bearing sheet (5), wherein a cavity (8) is arranged in the valve body (4), the valve core (3) and the pressure-bearing sheet (5) are arranged in the cavity (8), a water inlet hole (9) and an overflow hole (10) which are communicated with the cavity (8) are formed in the valve body (4), the water inlet hole (9) and the pressure-bearing sheet (5) are arranged at two ends of the valve core (3) relatively, and the overflow hole (10) is arranged between the water inlet hole (9) and the pressure-bearing sheet (5).

2. The mechanical safety relief valve according to claim 1, characterized in that: be equipped with the location step in valve body (4), location step department is located in pressure-bearing piece (5) and is furnished with and compresses tightly piece (6), be equipped with gland (7) in valve body (4), compress tightly piece (6) one end and pressure-bearing piece (5) butt, the other end and gland (7) butt.

3. The mechanical safety relief valve according to claim 1, characterized in that: one end of the valve core (3) close to the pressure bearing sheet (5) is provided with a spike part.

4. The mechanical safety relief valve according to claim 2, characterized in that: the gland (7) is in threaded connection with the valve body (4).

5. The mechanical safety relief valve according to claim 2, characterized in that: the pressing piece (6) is a pressing ring, and a vent hole (11) is formed in the pressing cover (7).

6. The mechanical safety relief valve according to claim 1, characterized in that: the valve is characterized in that a cover plate (1) is arranged on the valve body (4), the water inlet hole (9) is formed in the cover plate (1), and a sealing ring (2) is arranged between the cover plate (1) and the valve core (3).

7. The mechanical safety relief valve according to any one of claims 1 to 6, characterized in that: the overflow device is characterized by further comprising a screw (13) and a discharge pipe (12) with external threads, wherein the overflow hole (10) is a threaded hole which can be in threaded connection with the screw (13) and the discharge pipe (12).