RU168860U1 - STOCK PISTON OF FIRE-EXTINGUISHER START-UP AND START-UP DEVICE - Google Patents

Abstract

The utility model relates to the field of general engineering and can be used in shut-off and starting devices for fire extinguishers. A piston rod consists of a cylindrical rod on which there is a head with a recess for an oil seal, an oil seal, and also a locking element consisting of a landing collar, a locking sealing rings, thrust collar and thrust part, and the rod, rod head and locking element are made by a single integral part by injection molding, while at one end of the rod there is a head in the form a cylinder, the upper part of which is convex, and the head has a recess for the stuffing box and an oil seal, and at the other end of the shaft there is a locking element consisting of a landing collar, on which a locking sealing ring is located in a recess made identical to the shape and size of the inner diameter of the ring, which is associated with a thrust collar, the diameter of which exceeds the diameter of the ring, under the thrust collar is the thrust part of the rod, which is the guide and support for the spring. Using the utility model allows to simplify the design by eliminating collapsible elements, to improve the mass-dimensional indicator of the finished product by casting the product, to increase the level of industrial safety, reliability, unification and ease of operation due to the manufacturability of the product.

Description

Technical field

The utility model relates to the field of general engineering and can be used in locking and starting devices for fire extinguishers.

State of the art

The piston compressor piston rod is known from the prior art, which is a rod, at one end of which a fastening section to the crosshead is made, and at the other end, a threaded section is made adjacent to which a seating surface for the piston is made adjacent to which a thrust shoulder is made, characterized the fact that from the side of the threaded section in the rod are made at least two intersecting through radial holes for installation in one of them cotter pin (RU patent No. 139025, application: 2013145188/02, 08.10.2013).

The reasons why it is impossible to achieve a technical result is the low reliability associated with the complexity of the design and the tightness of collapsible threaded joints.

As a prototype, a rod used in a locking and starting device for a fire extinguisher is selected, at one end of which a head with an oil seal is made, and at the other end there is a threaded section for connection through a thrust ring and a rubber seal with a locking element, characterized in that the locking element consists of of the four parts interconnected by the threaded part of the rod (RU patent No. 23237496, application 2006136289/12, 10.16.2006).

The reasons why it is impossible to achieve a technical result are the design complexity, high cost and low manufacturability, due to the use of a specially made rubber seal with a locking element, the use of four different parts to be fastened together, the use of a special-purpose holding sleeve with a mating part to the sealing element.

Common signs are the rod on which the head is located with a recess under the gland, the gland, as well as a locking element, consisting of a landing collar, a locking sealing ring - a rubber ring, an abutment side and an abutment part.

Utility Model Disclosure

The technical problem is aimed at simplifying the design by eliminating collapsible elements, improving the mass-dimensional characteristics of the finished product by performing the product by casting.

The technical result is aimed at increasing the level of industrial safety, reliability, unification and ease of operation due to the manufacturability of the product.

The technical result is achieved in that the piston rod consists of a cylindrical rod on which a head with a recess for an oil seal, an oil seal, as well as a locking element, consisting of a landing collar, a locking sealing ring, a thrust collar and a thrust part, a rod, a rod head are located and the locking element is made by a single integral part by injection molding, while at one end of the rod there is a cylinder head, the head has a recess for the seal and an oil seal, and at the other end of the rod is I am a locking element consisting of a landing collar, on which there is a locking sealing ring in a recess made identical to the shape and size of the inner diameter of the ring, which is associated with a thrust collar, the diameter of which exceeds the diameter of the ring, under the thrust collar is the thrust part of the rod, which is the guide and spring support.

The essence of the utility model is illustrated by figures 1, 2.

The piston rod consists of a rod of cylindrical shape, on which a head with a recess for an oil seal, an oil seal, and a locking element, consisting of a landing collar, a locking sealing ring - a rubber ring, a thrust collar and a thrust part, are located, characterized in that the rod, head of the rod and the locking element are made by a single integral part by injection molding, while at one end of the rod (4) there is a head (1) in the form of a cylinder, on the head there is a recess for the seal (3) and an oil seal (2), and at the other end rod there is a locking element consisting of a landing collar (5), on which a locking sealing ring is located - a rubber ring (6) in a recess of a special profile along the ring cross section, which is associated with a persistent collar (7), the diameter of which exceeds the diameter of the ring, under the persistent collar there is a persistent part of the rod (8), which is the guide and support for the spring (15).

Utility Model Implementation

The piston rod as part of the fire extinguisher’s locking and starting device (ZPU) works as follows: when the storage tank for the fire extinguisher is pressurized, the gas pressure is transmitted through the inlet pipe (9) in the housing (10) of the locking and starting device directly to the thrust part of the rod (8) , which is supported by a locking sealing ring - a rubber ring (6) on the landing seat (11) of the locking and starting device housing, the material of the locking sealing ring - a rubber ring is deformed, fills all the gaps of the saddle and thereby mym blocks the exit paths for boost gas. When the rod (1) is discharged from the storage tank for the extinguishing agent, it moves under the action of a force from the drive handle (12), the handle axis (13) and is released from support by a locking sealing ring - a rubber ring (6) on the seat seat (11) of the housing (10) ) a locking-starting device, while the material of the locking sealing ring - the rubber ring acquires the initial undeformed shape and opens the exit paths for boost gas through the outlet pipe (14).

In the conditions of pilot production, the claimed advantage over existing analogues is confirmed by practical results. The total complexity of the product is reduced by 16 times, the mass of the product is reduced by 2 times, the reliability of the product is close to 95%. Based on the results of experimental work, it was decided to launch the product in mass production.

Claims (1)

A piston rod, consisting of a cylindrical rod, on which a head with a recess for an oil seal, an oil seal, and a locking element, consisting of a landing collar, a locking sealing ring, a thrust collar and a thrust part, characterized in that the rod, the rod head and the locking element is made by a single integral part by injection molding, while at one end of the rod there is a cylinder head, the upper part of which is convex, and the head has a recess for the stuffing box and stuffing box, and and at the other end of the rod there is a locking element, consisting of a landing collar, on which there is a locking sealing ring in a recess, made identical to the shape and size of the inner diameter of the ring, which is associated with a thrust collar, the diameter of which exceeds the diameter of the ring, under the thrust collar is the thrust part of the rod , which is the guide and support for the spring.

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