CN210484709U

CN210484709U - Overflow valve

Info

Publication number: CN210484709U
Application number: CN201921347533.1U
Authority: CN
Inventors: 周敏杰
Original assignee: Changzhou Amg Refrigeration Equipment Co ltd
Current assignee: Changzhou Amg Refrigeration Equipment Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-05-08
Anticipated expiration: 2029-08-19

Abstract

The utility model relates to an overflow valve, which comprises a valve seat, the valve gap, the valve rod, valve clack and valve cap, the cavity that link up about the disk seat has, the lower part of cavity is the import portion, the lateral wall of disk seat is equipped with the export portion with cavity vertical and UNICOM, the cavity top is connected with the valve gap, the valve cap bottom is equipped with the storage tank corresponding with the cavity, the valve rod has been penetrated at the valve gap middle part, the valve rod bottom is located the storage tank, cavity inner wall is equipped with the guide pin bushing, the constant head tank has been seted up on the guide pin bushing, be equipped with the location steel ball in the constant head tank, inlay on the lower part inner wall in the guide pin bushing and be. The utility model is provided with the guide sleeve with the positioning groove, and the positioning steel ball is arranged in the positioning groove, thus the installation is convenient; the spring upper end of valve clack is equipped with the spring gland with valve rod bottom matched with, is convenient for adjust spring pressure, can prevent because of the system vibrations that low velocity of flow or low density arouse, can be applied to the occasion that the refrigerating output variation is big.

Description

Overflow valve

Technical Field

The utility model belongs to the technical field of the valve technique and specifically relates to an overflow valve.

Background

The 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. For some non-flammable refrigerants, including ammonia, carbon dioxide, and non-corrosive gaseous or liquid media, the pressure control effect of existing relief valves is reduced by the low temperature.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art, and provides an overflow valve which can be applied to occasions with large refrigerating output variation.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an overflow valve, includes disk seat, valve gap, valve rod, valve clack and valve cap, the disk seat has the cavity that link up from top to bottom, and the lower part of cavity is the import portion, and the lateral wall of disk seat is equipped with the export portion of perpendicular and UNICOM with the cavity, and the top of cavity is connected with the valve gap, and the valve cap bottom is equipped with the storage tank corresponding with the cavity, and the valve rod has been penetrated at the valve gap middle part, and the bottom of valve rod is located the storage tank, the cavity inner wall is equipped with the guide pin bushing, has seted up the constant head tank on the guide pin bushing, is provided with the location steel ball in the constant head tank, inlays on the inner wall of.

In order to ensure the sealing performance of the valve cover, the sealing cover is connected to the top of the valve cover in a threaded mode, and a sealing ring, a packing and a packing gasket are sequentially arranged between the sealing cover and the valve rod from top to bottom.

In order to ensure the sealing property between the valve cover and the valve cap, the outer wall of the upper part of the valve cover is in threaded connection with the valve cap, and a sealing gasket is arranged on the inner wall of the valve cap at the top of the valve cover.

In order to ensure the tightness of the guide sleeve, the outer wall of the upper part of the guide sleeve is further limited, and a sealing ring is embedded in the outer wall of the upper part of the guide sleeve.

In order to ensure the sealing performance between the guide sleeve and the valve seat, an O-shaped sealing ring is arranged between the bottom of the guide sleeve and the inner wall of the valve seat.

In order to ensure the sealing performance between the valve cover and the valve seat, a sealing O-shaped ring is arranged at the joint of the valve cover and the valve seat.

The utility model has the advantages that: the utility model is provided with the guide sleeve with the positioning groove, and the positioning steel ball is arranged in the positioning groove, thus the installation is convenient; the spring upper end of valve clack is equipped with the spring gland with valve rod bottom matched with, and the pressure of the regulation spring of being convenient for can prevent because of the system vibrations that low velocity of flow or low density arouse, can be applied to the occasion that the refrigerating output variation is big.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the valve comprises a valve seat, a valve cover, a valve rod, a valve clack, a valve cap, a guide sleeve, a positioning steel ball, a guide ring, a spring gland, a sealing cover, a sealing ring, a filler, a packing gasket, a sealing ring, a sealing O-shaped ring, a cavity, an inlet part, an outlet part, an accommodating groove and a positioning groove, wherein the valve seat, the valve cover, the valve rod, the valve clack, the valve cap, the valve cover and the guide sleeve are arranged in sequence from 1 to 1, the positioning steel ball is arranged in sequence from 8 to 8, the.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in figure 1, the overflow valve comprises a valve seat 1, a valve cover 2, a valve rod 3, a valve flap 4 and a valve cap 5, wherein the valve seat 1 is provided with a cavity 1-1 which is communicated up and down, the lower part of the cavity 1-1 is an inlet part 1-2, the side wall of the valve seat 1 is provided with an outlet part 1-3 which is vertical to and communicated with the cavity 1-1, the top of the cavity 1-1 is connected with the valve cover 2, the bottom of the valve cover 2 is provided with a containing groove 2-1 corresponding to the cavity 1-1, the valve rod 3 is inserted into the middle part of the valve cover 2, the bottom of the valve rod 3 is positioned in the containing groove 2-1, the inner wall of the cavity 1-1 is provided with a guide sleeve 6, a positioning groove 6-1 is arranged on the guide sleeve 6, a positioning steel ball 7 is arranged in the positioning groove, the upper end of the spring 9 is provided with a spring gland 10 matched with the bottom of the valve rod 3.

In order to ensure high-precision sealing performance, a sealing cover 11 is connected to the top of the bonnet 2 in a threaded manner, and a sealing ring 12, a packing 13 and a packing gasket 14 are arranged between the sealing cover 22 and the valve rod 3 in sequence from top to bottom. The outer wall of the upper part of the valve cover 2 is in threaded connection with the valve cap 5, and the inner wall of the valve cap 5 at the top of the valve cover 2 is provided with a sealing gasket 15. The outer wall of the upper part of the guide sleeve 6 is embedded with a sealing ring 16. An O-shaped sealing ring 17 is arranged between the bottom of the guide sleeve 6 and the inner wall of the valve seat 1. The joint of the valve cover 2 and the valve seat 1 is provided with a sealing O-shaped ring 18.

When the hydraulic pressure in the system reaches a set value, the overflow valve of the embodiment can be automatically opened, and when the hydraulic pressure drops to the set value, the overflow valve is closed under the action of the force of the spring 9. When the liquid in the overflow valve is at low flow rate or low density, the valve rod 3 can be manually rotated clockwise to adjust the pressure of the spring 9, so that the overflow valve is closed.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an overflow valve, includes disk seat (1), valve gap (2), valve rod (3), valve clack (4) and valve cap (5), disk seat (1) has cavity (1-1) that link up from top to bottom, and the lower part of cavity (1-1) is import portion (1-2), and the lateral wall of disk seat (1) is equipped with export portion (1-3) perpendicular and UNICOM with cavity (1-1), and the top of cavity (1-1) is connected with valve gap (2), and valve gap (2) bottom is equipped with storage tank (2-1) corresponding with cavity (1-1), and valve gap (2) middle part has penetrated valve rod (3), and the bottom of valve rod (3) is located storage tank (2-1), its characterized in that: the inner wall of the cavity (1-1) is provided with a guide sleeve (6), a positioning groove (6-1) is formed in the guide sleeve (6), a positioning steel ball (7) is arranged in the positioning groove (6-1), a guide ring (8) is embedded in the inner wall of the middle lower portion of the guide sleeve (6), a valve clack (4) is arranged in the guide sleeve (6), a spring (9) is arranged on the valve clack (4), and a spring gland (10) matched with the bottom of the valve rod (3) is arranged at the upper end of the spring (9).

2. The relief valve according to claim 1, wherein: the top of the valve cover (2) is in threaded connection with a sealing cover (11), and a sealing ring (12), a packing (13) and a packing gasket (14) are sequentially arranged between the sealing cover (11) and the valve rod (3) from top to bottom.

3. The relief valve according to claim 1, wherein: the valve cap (5) is in threaded connection with the outer wall of the upper portion of the valve cap (2), and a sealing gasket (15) is arranged on the inner wall of the valve cap (5) at the top of the valve cap (2).

4. The relief valve according to claim 1, wherein: and a sealing ring (16) is embedded in the outer wall of the upper part of the guide sleeve (6).

5. The relief valve according to claim 1, wherein: an O-shaped sealing ring (17) is arranged between the bottom of the guide sleeve (6) and the inner wall of the valve seat (1).

6. The relief valve according to claim 1, wherein: and a sealing O-shaped ring (18) is arranged at the joint of the valve cover (2) and the valve seat (1).