CN223318531U - A piston type safety valve - Google Patents

Abstract

The utility model discloses a piston-type safety valve, which relates to the technical field of safety valves. The utility model includes a safety valve body, a fixed collar and an external pipe, wherein both sides of the safety valve body are provided with a limit assembly and a clamping assembly, respectively, and the clamping assembly is used to clamp and limit the fixed collar and the safety valve body. The utility model uses the elastic external expansion force of the expansion spring itself to facilitate the clamping block to rebound and reset to engage with the clamping groove after the clamping block corresponds to the inside of the clamping groove, so as to facilitate the clamping of the fixed clamping ring with the external clamping ring, that is, to facilitate the installation between the safety valve body and the external pipe, and to facilitate quick installation and quick disassembly. There is no need to install through a flange and there is no need to screw multiple bolts, which helps to save installation time. The sealing performance of the silicone gasket and the close contact between the silicone gasket and the connection between the fixed clamping ring and the external clamping ring help improve the sealing performance of the local connection between the fixed clamping ring and the external clamping ring.

Description

Piston type safety valve

Technical Field

The utility model belongs to the technical field of safety valves, and particularly relates to a piston type safety valve.

Background

The safety valve is an automatic pressure relief valve, its opening and closing member is in normally closed state under the action of external force, when the pressure of medium in the equipment or pipeline is raised, it is automatically opened, and when the pressure exceeds the defined safety value, it can discharge a rated quantity of fluid to the outside of the system so as to prevent the pipeline or equipment from making safety protection action. When the pressure of the system exceeds a specified value, the safety valve is opened, and part of gas in the system is discharged into the atmosphere, so that the pressure of the system does not exceed an allowable value, and the system is ensured not to be in accident due to the overhigh pressure. The relief valve is also called an overflow valve. When the pressure of the air source is lower than the safety value, the spring drives the piston to move downwards to close the valve port.

Wherein chinese patent CN202122348089.9 discloses a piston type relief valve, including the valve body, the left and right sides of valve body all is provided with the connecting pipe, the top of connecting pipe is provided with fixed cover, the inside threaded connection of fixed cover has the screw rod, the one end of screw rod is provided with turns round the dish, the other end of screw rod extends to the inside of connecting pipe and rotates and be connected with first grip block, and both sides all are provided with limit structure around the first grip block, the bottom of first connecting pipe inner chamber is provided with a plurality of first springs, the other end of first spring is provided with the second grip block, the other end of connecting pipe is provided with the fixed disk, the upper and lower both sides of fixed disk inner chamber all run through and are provided with the straight-bar.

In the existing installation process of the valve and the pipeline, most of the valves are connected through the flange, but the flange and the flange are often connected through rotating connecting pieces, such as bolts and the like, so that more bolts are required to be installed during rotation, if more piston type safety valves are installed during construction operation, time and physical strength are consumed, and the operation efficiency of operators during installation and construction is reduced to a certain extent.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of utility model

The present utility model provides a piston type safety valve to solve the above-mentioned problems of the prior art.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model relates to a piston type safety valve which comprises a safety valve body, a fixed collar and an external connecting pipe, wherein two sides of the safety valve body are respectively provided with a limiting component and a clamping component, the clamping component is used for limiting the clamping between the fixed collar and the safety valve body, the limiting component is used for fixedly mounting the fixed collar after limiting the clamping component and the safety valve body, two sides of the safety valve body are respectively connected with the connecting pipes, the surfaces of the two connecting pipes are respectively connected with the fixed collar, and one ends of the two external connecting pipes are respectively attached to one ends of the two connecting pipes.

Further, the spacing subassembly includes four connecting plates, four fixed plates, four fixture blocks and eight expansion springs, every two the connecting plates set up respectively at every the surface of connecting pipe, every the inboard of connecting plate is equal sliding connection has two slide bars, every the fixed plate surface respectively with every two the one end of slide bar is connected, four the fixture blocks set up respectively four wherein the one end of slide bar, four in addition the one end of slide bar all is connected with the spacing ring, four the surface of spacing ring all is connected with the silica gel pad, every expansion spring overlaps respectively and establishes at every the surface of slide bar.

Further, two ends of each expansion spring are respectively connected with the surface of each fixing plate and the surface of each connecting plate.

Further, the clamping assembly comprises two fixed clamping rings and eight clamping grooves, each fixed clamping ring is connected with one side of each fixed lantern ring, each external clamping ring is clamped with the inner side of each fixed clamping ring, four clamping grooves are symmetrically formed in the upper side and the lower side of the horizontal center line of each fixed clamping ring, the other four clamping grooves are symmetrically formed in the upper side and the lower side of the horizontal center line of each external clamping ring, and each two clamping grooves are communicated.

Further, each clamping block is respectively connected with each clamping groove in a clamping mode.

Further, the inner side of each fixed snap ring is connected with the surface of each connecting pipe, and the inner sides of the two external snap rings are respectively connected with the surfaces of the two external connecting pipes.

The utility model has the following beneficial effects:

1. According to the utility model, the positions of the limiting component and the clamping component are corresponding, the outer connecting pipe and the connecting pipe are spliced correspondingly, the limiting component and the clamping component are clamped, and at the moment, the outer connecting pipe and the connecting pipe are mounted through clamping action force, so that the outer connecting pipe is convenient and quick to mount, and convenient and quick to dismount, the outer connecting pipe is not required to be mounted through a flange, a plurality of bolts are not required to be screwed, and the mounting time is saved.

2. According to the utility model, after the elastic external expansion force of the expansion spring is convenient to correspond to the inside of the clamping block and the clamping groove, the clamping block is driven to rebound and reset again to be clamped with the clamping groove, so that the fixed clamping ring and the external clamping ring are conveniently clamped, the safety valve body and the external pipe are conveniently and quickly installed, and simultaneously, the safety valve body and the external pipe are also conveniently and quickly detached, the safety valve body and the external pipe are not required to be installed through a flange, a plurality of bolts are not required to be screwed, the installation time is saved, the tightness of a silica gel pad is improved, the joint of the silica gel pad, the fixed clamping ring and the external clamping ring is closely attached, and the tightness of local connection between the fixed clamping ring and the external clamping ring is assisted to be improved.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings that are needed for the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the front structure of the present utility model;

FIG. 3 is a schematic view of a partial structure of a cross section of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

Fig. 5 is a schematic view of a partial dispersion structure of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a safety valve body; 2, a limiting component, 21, a connecting plate, 22, a sliding rod, 23, a fixing plate, 24, a clamping block, 25, a limiting ring, 26, a silica gel pad, 27, an expanding spring, 3, a clamping component, 31, a fixing clamping ring, 32, an external clamping ring, 33, a clamping groove, 4, a connecting pipe, 5, a fixing collar and 6, an external connecting pipe.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments in the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "open," "upper," "lower," "top," "middle," "inner," and the like indicate an orientation or positional relationship, merely for convenience of description and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

Referring to fig. 1-5, the present utility model is a piston type safety valve, which comprises a safety valve body 1, a fixed collar 5 and an external connection pipe 6, wherein two sides of the safety valve body 1 are respectively provided with a limiting component 2 and a clamping component 3, the clamping component 3 is used for limiting the clamping between the fixed collar 5 and the safety valve body 1, the limiting component 2 is used for fixedly installing the fixed collar 5 and the safety valve body 1 after limiting the clamping component 3, two sides of the safety valve body 1 are respectively connected with a connecting pipe 4, surfaces of the two connecting pipes 4 are respectively connected with the fixed collar 5, and one ends of the two external connection pipes 6 are respectively attached to one ends of the two connecting pipes 4.

Firstly, the position of the limiting component 2 corresponds to the position of the clamping component 3, then the outer connecting pipe 6 is correspondingly spliced with the connecting pipe 4, then the limiting component 2 is clamped with the clamping component 3, at the moment, the outer connecting pipe 6 and the connecting pipe 4 are installed through clamping action force, and meanwhile, the outer connecting pipe is convenient and quick to install and convenient and quick to detach, the outer connecting pipe is not required to be installed through a flange, a plurality of bolts are not required to be screwed, and the installation time is saved.

Through spacing subassembly 2 and the looks block of block subassembly 3, do benefit to and fix a position between connecting pipe 4 and the outer tube 6 fast, be convenient for install mutually between safety valve body 1 and the outer tube 6 promptly, also conveniently dismantle fast when convenient quick installation need not to install through the flange, need not to twist a plurality of bolts, help saving installation time, spacing subassembly 2 and the looks block of block subassembly 3 simultaneously, supplementary leakproofness of having promoted local connection between outer tube 6 and the connecting pipe 4.

In one embodiment, for the above-mentioned limiting component 2, the limiting component 2 includes four connecting plates 21, four fixing plates 23, four clamping blocks 24 and eight expansion springs 27, each two connecting plates 21 are respectively disposed on the surface of each connecting tube 4, each connecting plate 21 is slidably connected with two sliding rods 22 on the inner side, each fixing plate 23 surface is respectively connected with one end of each two sliding rods 22, four clamping blocks 24 are respectively disposed on one end of each four sliding rods 22, one end of each other four sliding rods 22 is respectively connected with a limiting ring 25, each expansion spring 27 is respectively sleeved on the surface of each sliding rod 22, and each surface of each limiting ring 25 is respectively connected with a silica gel pad 26.

Firstly, the right side installation is taken as an example to describe, the left side installation process is the same, then the safety valve body 1 is placed on the horizontal ground, then the upper connecting plate 21 and the lower connecting plate 21 are pulled outwards, then the clamping blocks 24 of the clamping assembly 3 are correspondingly positioned, namely, the ports of the external connecting pipe 6 are correspondingly attached to the ports of the connecting pipe 4, then the two fixing plates 23 are released, the clamping blocks 24 are driven by the elastic reset action of the expanding springs 27 to be clamped with the clamping assembly 3 again by the two fixing plates 23, at the moment, the clamping assembly 3 and the external connecting pipe 6 are clamped and limited with the connecting pipe 4, and the limiting ring 25 and the silica gel pad 26 are driven to move together while the clamping blocks 24 move, so that after the corresponding installation between the external connecting pipe 6 and the connecting pipe 4 is completed, the corresponding two silica gel pads 26 are clung to the surfaces of the external connecting pipe 6, so that corresponding clamping forces are generated on the surfaces of the external connecting pipe 6, the installation stability of the external connecting pipe 6 is assisted, and the silica gel pad 26 is clung to the connection position of the clamping assembly 3, the connection position of the clamping assembly 3 is assisted, the local connection safety valve body is convenient and the left side installation operation is easy and convenient.

The elastic external expansion force of the expansion spring 27 is convenient to clamp the clamping block 24 with the clamping assembly 3 after the clamping block 24 corresponds to the clamping assembly 3, the clamping block 24 is driven to rebound and reset again to clamp the clamping assembly 3, the safety valve body 1 and the external pipe 6 are conveniently and quickly installed, the safety valve body is convenient and quick to detach while being installed, the safety valve body is not required to be installed through a flange, a plurality of bolts are not required to be screwed, installation time is saved, the silicon rubber pad 26 is closely attached to the joint of the clamping assembly 3, and the sealing performance of local connection between the clamping assembly 3 is assisted.

In addition, in a specific application, the expansion spring 27 is a spring compression spring with a certain strong pushing force, for example, a compression spring, the compression spring is a spiral spring bearing axial pressure, a certain gap exists between the rings, and when the compression spring is subjected to external load, the spring contracts and deforms to store deformation energy, so that stable pushing force can be provided to improve the stability of the clamping installation between the clamping block 24 and the clamping assembly 3, and when the expansion spring 27 is subjected to external pulling force, a reaction force is generated to help to drive the clamping block 24 to rebound and restore to be clamped with the clamping assembly 3 again.

In one embodiment, for the expansion springs 27, two ends of each expansion spring 27 are respectively connected with the surface of each fixing plate 23 and the surface of each connecting plate 21, so that when the clamping block 24 is pulled, a corresponding elastic restoring force is generated, and the clamping block 24 is further facilitated to be clamped with the clamping assembly 3 again.

In one embodiment, for the above-mentioned fastening assembly 3, the fastening assembly 3 includes two fixing rings 31 and eight fastening slots 33, each fixing ring 31 is connected to one side of each fixing ring 5, each external fastening ring 32 is fastened to the inner side of each fixing ring 31, four fastening slots 33 are symmetrically formed on the upper and lower sides of the horizontal center line of two fixing rings 31, and the other four fastening slots 33 are symmetrically formed on the upper and lower sides of the horizontal center line of two external fastening rings 32, and each two fastening slots 33 are communicated, so that one fastening block 24 is conveniently fastened to two corresponding fastening slots 33.

In one embodiment, for the clamping blocks 24, each clamping block 24 is respectively in clamping connection with each clamping groove 33, so that the convenience of installation between the safety valve body 1 and the outer tube 6 is improved, and the time consumed by the installation operation is reduced.

In one embodiment, for the fixed snap rings 31, the inner side of each fixed snap ring 31 is connected to the surface of each connecting tube 4, and the inner sides of the two external snap rings 32 are respectively connected to the surfaces of the two external connecting tubes 6, so as to facilitate connection between the external connecting tubes 6 and the safety valve body 1.

In summary, by means of the above technical solution of the present utility model, the installation on the right side is described firstly, the installation on the left side is not described, the installation mode is the same, the safety valve body 1 is placed on the horizontal ground, then the upper and lower two connecting plates 21 are pulled outwards, then the external connection clamp ring 32 is clamped into the fixed clamp ring 31 in a sliding manner, since the fixed clamp ring 31 and the external connection clamp ring 32 are internally provided with a plurality of racks which are clamped mutually, the external connection clamp ring 32 is clamped with the fixed clamp ring 31 at this time, after the external connection clamp ring 32 is clamped with the fixed clamp ring 31, the position of the clamping groove 33 corresponds to the clamping block 24, then the two fixing plates 23 are released, then the clamping block 24 is clamped with the clamping groove 33 again under the elastic reset action of the expansion spring 27, the fixed clamp ring 31, the external connection clamp ring 32 and the external connection pipe 6 are clamped and limited between the connecting pipe 4, and the limiting ring 25 and the silica gel pad 26 are also driven to move together simultaneously, so that after the external connection pipe 6 and the connecting pipe 4 are clamped with the corresponding two corresponding clamping blocks 26 are installed with the corresponding silica gel pad 6, the surface of the corresponding to the surface of the sealing pipe 1 is lifted, and the surface of the sealing device is clamped with the sealing pad 1 is fixed, and the sealing device is fixed and the sealing device is attached to the surface of the sealing device is mounted on the surface of the sealing pad 1.

Through above-mentioned technical scheme, be convenient for through the elasticity of expansion spring 27 self outside expansion force at fixture block 24 and the inside of draw-in groove 33 after corresponding, drive fixture block 24 rebound reset come with draw-in groove 33 looks block again, be convenient for with fixed snap ring 31 with external snap ring 32 looks block, even if install safety valve body 1 with external pipe 6 between, also convenient quick dismantlement in the time of convenient quick installation need not to install through the flange, need not to twist a plurality of bolts, help saving installation time, through the leakproofness of silica gel pad 26, and silica gel pad 26 is hugged closely mutually with the junction of fixed snap ring 31 and external snap ring 32, the auxiliary leakproofness of having promoted the local connection between fixed snap ring 31 and the external snap ring 32.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above disclosed preferred embodiments of the utility model are merely intended to help illustrate the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (3)

1. The utility model provides a piston type relief valve, includes relief valve body (1), fixed lantern ring (5) and external pipe (6), the both sides of relief valve body (1) are equipped with spacing subassembly (2) and block subassembly (3) respectively, block subassembly (3) are used for spacing the block between fixed lantern ring (5) and the relief valve body (1), fixed mounting between fixed lantern ring (5) and relief valve body (1) after spacing block subassembly (3) are used for, a serial communication port, the both sides of relief valve body (1) all are connected with connecting pipe (4), and the surface of two connecting pipe (4) all is connected with fixed lantern ring (5), and the one end of two external pipe (6) is laminated with the one end of two connecting pipes (4) respectively;

The limiting assembly (2) comprises four connecting plates (21), four fixing plates (23), four clamping blocks (24) and eight expansion springs (27), wherein each two connecting plates (21) are respectively arranged on the surface of each connecting pipe (4), two sliding rods (22) are slidably connected to the inner side of each connecting plate (21), the surface of each fixing plate (23) is respectively connected with one end of each two sliding rods (22), each clamping block (24) is respectively arranged at one end of each four sliding rods (22), one end of each other four sliding rods (22) is respectively connected with a limiting ring (25), the surfaces of each limiting ring (25) are respectively connected with a silica gel pad (26), and each expansion spring (27) is respectively sleeved on the surface of each sliding rod (22);

the clamping assembly (3) comprises two fixed clamping rings (31) and eight clamping grooves (33), each fixed clamping ring (31) is connected with one side of each fixed clamping ring (5) respectively, each external clamping ring (32) is clamped with the inner side of each fixed clamping ring (31) respectively, four clamping grooves (33) are symmetrically formed in the upper side and the lower side of the horizontal center line of each fixed clamping ring (31), and the other four clamping grooves (33) are symmetrically formed in the upper side and the lower side of the horizontal center line of each external clamping ring (32) respectively and are communicated with each other;

Each clamping block (24) is respectively connected with each clamping groove (33) in a clamping mode.

2. A piston type safety valve according to claim 1, wherein both ends of each of the expansion springs (27) are connected to the surface of each of the fixing plates (23) and the surface of each of the connecting plates (21), respectively.

3. A piston safety valve according to claim 2, wherein the inner side of each fixed snap ring (31) is connected to the surface of each connecting tube (4), and the inner sides of two external snap rings (32) are connected to the surfaces of two external connecting tubes (6), respectively.