CN211778951U - Safety interlocking device for quick-opening blind plate - Google Patents

Abstract

The utility model discloses a safety interlock for quick-opening blind plate, including last casing and lower casing, it constitutes the casing with casing down to go up the casing, the locking lever subassembly still has, the locking lever unit mount is between last casing and lower casing, the locking lever subassembly includes the locking lever, the diaphragm splint, diaphragm and gland, the diaphragm clamp is between diaphragm splint and gland, it constitutes the cavity to go up between casing and the lower casing, the diaphragm is located the cavity, the shell body of going up the casing has with the communicating main air duct of cavity, the shell body of casing has with the communicating locking lever chamber of cavity down, the one end of locking lever is located the cavity and is connected with the diaphragm, the other end of locking lever is located the locking lever intracavity, shell body tail end department of casing still opens and has with the communicating operation mouth in locking lever chamber down. The utility model has the advantages of simple and reasonable structure, can realize the safety interlock when simplifying self structure.

Description

Safety interlocking device for quick-opening blind plate

Technical Field

The utility model relates to a pressure vessel's door opener especially relates to a safety interlock.

Background

In the current society, pressure vessels are frequently used in various industrial occasions, and safety accidents need to be avoided when the pressure vessels are used, because when pressure is applied to the interior of the vessels, once a worker opens a blind plate of the vessels, objects and gas in the vessels are sprayed outwards;

therefore, when the pressure container and the pipeline are used, the safety interlocking device is an indispensable important part, but the interlocking device with the traditional structure has a complex structure and a large volume, so that the purpose of locking under pressure can be reliably realized while the interlocking structure is simplified, and the problem in the industry is always difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a safety interlocking device for a quick-opening blind plate.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a quick-opening safety interlock for blind plate, including last casing and lower casing, go up the casing and constitute the casing with lower casing, still have the locking lever subassembly, the locking lever subassembly is installed between last casing and lower casing, the locking lever subassembly includes the locking lever, the diaphragm splint, diaphragm and gland, the diaphragm clamp is between diaphragm splint and gland, go up the casing and constitute the cavity between the casing down, the diaphragm is located the cavity, the casing of going up the casing has the main gas passage that communicates with the cavity, the casing of casing down has the locking lever chamber that communicates with the cavity, the one end of locking lever is located the cavity and is connected with the diaphragm, the other end of locking lever is located the locking lever intracavity, casing tail end department of casing down still opens and has the communicating operation mouth in locking lever chamber.

Preferably, two air inlet channels communicated with the main air channel are further formed at the tail end of the shell body of the upper shell.

Preferably, the rod body of the lock rod is sleeved with a return spring, and two ends of the return spring are respectively abutted against the lock rod and the lower shell.

Preferably, the end part of the locking rod is provided with a nut in a threaded manner, the end part of the locking rod is also provided with an annular stop group at the position of the nut, and the membrane clamping plate, the membrane and the gland are sequentially sleeved on the annular stop group and are tightly pressed through the nut.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses for the interlocking of prior art diminishes, is convenient for install on container and pipeline like this, and is further, and the operation mouth on the casing is the locking mouth down, and the lock body need not to cooperate with external device like this, and the staff directly can operate on the casing, further reduces the device that needs to use, practices thrift the cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the lower case 2 of the present invention;

fig. 3 is a schematic view of the structural relationship among the lock rod 5, the diaphragm clamping plate 6, the diaphragm 7 and the gland 8 of the present invention;

fig. 4 is a schematic structural view of the lock lever 5 of the present invention.

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.

Referring to fig. 1-4, a safety interlocking device for a quick-opening blind plate comprises an upper shell 1 and a lower shell 2, wherein the upper shell 1 and the lower shell 2 form a shell 3, the safety interlocking device further comprises a lock rod assembly 4, the lock rod assembly 4 is installed between the upper shell 1 and the lower shell 2, the lock rod assembly 4 comprises a lock rod 5, a membrane clamping plate 6, a membrane 7 and a gland 8, the membrane 7 is clamped between the membrane clamping plate 6 and the gland 8, a cavity 9 is formed between the upper shell 1 and the lower shell 2, the membrane 7 is located in the cavity 9, a shell body of the upper shell 1 is provided with a main air passage 10 communicated with the cavity 9, a shell body of the lower shell 2 is provided with a lock rod cavity 11 communicated with the cavity 9, one end of the lock rod 5 is located in the cavity 9 and connected with the membrane 7, the other end of the lock rod 5 is located in the lock rod cavity 11, and an operation port 12 communicated with the shell body.

Preferably, two air inlet channels 13 communicated with the main air channel 10 are further formed at the tail end of the shell body of the upper shell 1.

Preferably, the rod body of the lock rod 5 is sleeved with a return spring 14, and two ends of the return spring 14 respectively abut against the lock rod 5 and the lower shell 2.

Preferably, the end of the locking rod 5 is threadedly provided with a nut 15, the end of the locking rod 5, which is located at the nut 15, is further provided with an annular stop group 16, and the diaphragm clamping plate 6, the diaphragm 7 and the gland 8 are sequentially sleeved on the annular stop group 16 and are pressed tightly by the nut 15.

When high pressure in the container or the pipeline, gas enters into cavity 9 through two intake ducts 13 and main air duct 10, gas promotes diaphragm 7 and swells forward, diaphragm 7 drives locking lever 5 and removes in locking lever chamber 11, the tip of locking lever 5 just can move the communicating position in operation mouth 12 and locking lever chamber 11, locking lever 5 blocks up operation mouth 12 promptly, the instrument that the staff opened the blind plate at this moment can't enter into operation mouth 12, consequently both realized the purpose of high pressure warning, the staff also can't open the blind plate when high pressure simultaneously.

It should be noted that the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece can all be customized according to the record of description and attached drawing, and the concrete connected mode of each part all adopts conventional means such as mature bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt among the prior art, conventional model, and the inventor does not detailed herein again.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (4)

1. The utility model provides a safety interlock for quick-opening blind plate, includes casing (1) and casing (2) down, go up casing (1) and casing (2) constitution casing (3) down, still have locking lever subassembly (4), locking lever subassembly (4) are installed at last casing (1) and between casing (2) down, locking lever subassembly (4) are including locking lever (5), diaphragm splint (6), diaphragm (7) and gland (8), diaphragm (7) are pressed from both sides and are pressed from both sides between diaphragm splint (6) and gland (8), its characterized in that: a cavity (9) is formed between the upper shell (1) and the lower shell (2), the diaphragm (7) is located in the cavity (9), a main air passage (10) communicated with the cavity (9) is formed in the shell of the upper shell (1), a lock rod cavity (11) communicated with the cavity (9) is formed in the shell of the lower shell (2), one end of the lock rod (5) is located in the cavity (9) and connected with the diaphragm (7), the other end of the lock rod (5) is located in the lock rod cavity (11), and an operation opening (12) communicated with the lock rod cavity (11) is further formed in the tail end of the shell of the lower shell (2).

2. The safety interlock device for a quick opening blind plate according to claim 1, wherein two air inlet ducts (13) communicating with the main air duct (10) are further opened at the tail end of the body of the upper case (1).

3. The safety interlocking device for the quick-opening blind plate according to claim 1 is characterized in that a return spring (14) is sleeved on a rod body of the lock rod (5), and two ends of the return spring (14) are respectively abutted against the lock rod (5) and the lower shell (2).

4. The safety interlocking device for the quick-opening blind plate is characterized in that a nut (15) is installed at the end of the lock rod (5) in a threaded mode, an annular stop group (16) is further arranged at the position, located at the nut (15), of the end of the lock rod (5), and the diaphragm clamping plate (6), the diaphragm (7) and the gland (8) are sequentially sleeved on the annular stop group (16) and are pressed through the nut (15).

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