RU2327846C1 - Rotor-type seal - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention relates to hardware, in particular, to the rotor-type seal incorporating a case with through holes to let in/let out a flexible embracing element with a passive and free ends and a rotor fitted to turn in the case and provided with a mating through hole to receive the flexible embracing element, a handle to turn the rotor and means to form latched one-piece joint between the case and the rotor. The said joint is made in the form of a spring laid in the case groove interacting with the mating groove made in the rotor in closing. Here note, that the case is provided with a circular cylindrical groove equal in depth to, at least, the thickness of the embracing element the passive end of which is rigidly fastened in the case. Note here, that the rotor is provided with the holes to receive the ledges of the handle. The case is made in the form of a flat body with a cylindrical side surface. The seal is provided with the seal closed position indicator made in the form of two flat ledges aligned in closed position of the seal. The case rear has a seat for washer rigidly attached to the rotor and allowing the latter to turn through free in the case.

EFFECT: increased resistance against unauthorised opening.

5 cl, 9 dwg

Description

The technical field to which the invention relates.

The invention relates generally to hardware and, in particular, to devices for locking and sealing various objects, including railway cars, freight containers and vans, tank hatches, helper hoppers, grain storage facilities, small containers, electric, gas and water meters, as well as various special packaging, including bags and collection bags.

More specifically, the invention relates to locking and sealing devices in which a flexible element, for example, a cable segment, is used as a closing (enclosing element).

State of the art

Known rotary seal containing a housing in the form of a glass and placed in it a rotor, which on the side surface have openings for a flexible female element. A ratchet mechanism is used to form a snap-on, one-piece connection between the housing and the rotor after forming a minimum loop. (US Pat. No. 540295B A, EB05B 39/02).

A disadvantage of the known seal is its complex construction and relatively insufficient tamper resistance, since the fixing of the rotor and the housing can be impaired (using simple tools), since the connector line between the rotor and the housing is open, and the snap-in element can be invisibly opened.

This drawback is eliminated in the device according to the patent Ru 2180385, EV 39/02, in which a washer is located rotatably above the upper end of the rotor in the housing, the outer diameter of which is larger than the diameter of this end, and the inner diameter of the washer such that the washer overlaps the end connector line of the end rotor with the housing, while in the housing there is a landing hole for the washer located in the housing so that the washer and rotor are able to contact one another, and the washer is fixed in the housing by rolling.

The disadvantages of the known seals include the fact that they have relatively large dimensions (made in the form of a glass) and some inconvenience during operation associated with the need to refuel the passive end of the enclosing element into the rotor hole and then rotor scroll (one or more times).

The technical result of the invention is the elimination of these disadvantages.

SUMMARY OF THE INVENTION

The specified technical result is achieved in that in a rotary seal containing a housing with through holes for entry and exit of a flexible female element having a passive and free ends, and a rotor mounted with a possibility of rotation in the housing having a through hole for a flexible female element, a handle for the rotation of the rotor, and means for forming a snap-on permanent connection of the casing and the rotor, means for forming a snap-on permanent connection of the casing and the rotor ideally located in the groove of the spring housing, interacting when locking with the counter groove made in the rotor, while the housing is equipped with an annular cylindrical sample with a depth equal to at least the thickness of the flexible female element, the passive end of which is rigidly fixed in the housing, while the rotor is equipped with symmetrically located relative to the axis of the reciprocal through hole, holes for protrusions, which are equipped with a handle.

And also the fact that the body is made in the form of a flat body with a cylindrical side surface, and the groove is made cylindrical and blind and is located closer to the side surface and the opening for the entrance of the enclosing element and perpendicular to its axis.

And also the fact that the seal is equipped with a seal closing indicator, made in the form of two flat protrusions, one of which is located on the housing, and the other is located on the rotor, which are combined in the closed position of the seal.

And also the fact that in the case on the back side there is a seat under the washer, rigidly connected to the rotor and allowing free rotation of the rotor in the case.

And also by the fact that in the position prepared for locking the seal, the spring located in the groove of the housing interacts with a recess made in the rotor.

Below the invention is illustrated by way of example with the accompanying drawings.

A brief description of the drawings.

Figure 1 shows the proposed rotary seal, front view with a pullout;

Figure 2 is a front view of a rotary seal;

Figure 3 is a rear view of a rotary seal;

Figure 4 is a top view of a rotary seal;

Figure 5 - handle for turning the rotor, front view;

Figure 6 is the same, top view;

In Fig.7 - rotary seal in the closed position, front view;

In Fig.8 is a section along aa taken in Fig.1

In Fig.9 is a section bB taken in Fig.7.

Preferred Embodiment

The rotary seal contains a housing 1 with through holes for an input 2 and an output 3 of a flexible female element 4 having a passive 5 and free 6 ends, and a rotor 7 mounted rotatably in the housing, having a corresponding through hole 8 for a flexible female element 4, a handle 9 for rotation of the rotor 7, and means for forming a snap-on one-piece connection of the housing and the rotor. The latter is made in the form of a spring 11 located in a groove 10 of the housing 1, interacting when locking with a return groove 12 made in the rotor 7, while the housing is equipped with a cylindrical annular sample 13 with a depth equal to at least the diameter of the flexible female element, the passive end of which 5 rigidly fixed in the housing 1, while the rotor is equipped with holes 14 symmetrically located relative to the axis of the reciprocal through hole for the protrusions 15, which are equipped with a handle 9. The housing is made in the form of a flat body with a cylindrical a lateral surface, and the groove 10 is cylindrical and blind and is located closer to the lateral surface and the hole for the entrance 2 of the female element 4 and perpendicular to its axis. The rotary seal is equipped with a seal closure indicator made in the form of two flat protrusions 16 and 17, one of which 16 is located on the housing 1, and the other 17 is located on the rotor 7, which are combined in the closed position of the seal. In the housing 1 from the rear side there is a seat 18 under the washer 19, rigidly connected to the rotor and allowing free rotation of the rotor 7 in the housing. Such a connection can be provided either by welding or by rolling. In the position prepared for locking the seal, the spring 11, located in the groove 10 of the housing 1, interacts with the recess 20 made in the rotor 7.

As a flexible enclosing element, a wire or a thin rope (cable) or tape can be used. On one side of the seal, the serial number of the seal, as well as other necessary sealing information, can be applied. The passive end of the female element is fixed in the shank 21, for example, by crimping it on a press.

The rotary seal is assembled in the following sequence.

The passive end 5 of the female element with the shank 21 is mounted in a groove 22 made in the housing 1, and then the free end 6 is passed through the hole 23 in the housing 1.

After that, the rotor 7 is inserted into the hole 24 in the housing 1 and put the washer 19 on the cylindrical protrusion 25 on the rotor 7, while the washer is located in the landing place of the housing. Then, the washer 19 is either welded or fastened by flaring the protrusion 25 so that the washer and the end face of the housing are able to contact each other, which at the same time allows the free rotation of the rotor 7 in the housing 1. The washer 19 can be made of antifriction material.

To prevent displacement of the combined axis of the input2 and output3 openings in the housing 1 with the corresponding through-hole 8 in the rotor 7 during assembly, transportation and preparation for operation, a recess 20 is provided, which includes a spring 11, thus fixing the relative position of the housing and the rotor. For this purpose, for example, a plastic insert passing through said openings can also be used.

The proposed rotary seal is used as follows.

When locking, the free end 6 of the cable segment is threaded through the eyes of the object to be sealed and then passed through the inlet 2 in the housing, the through hole 8 in the rotor 7 and the outlet 3 in the housing (Fig. 1) After forming a minimum loop, insert the handle 9 (key) in the holes 14 in the rotor 1 (the handle can be inserted in advance upon delivery).

When the rotor 7 is rotated clockwise until it stops (which serves as a flexible element), the flexible enclosing element located inside the housing rotates with the rotor and will be located in a cylindrical annular sample 13 in the housing 1 (Fig. 7), which ensures reliable fixation of the enclosing element and excluding the possibility of pulling it out of the case when maliciously acting on a locked device.

In this case, the spring 11 enters the groove 12 in the rotor 7 and fixes it in this position. The proposed design due to the location of the spring 11 at the same time in the groove 10 of the housing and the groove 12 in the rotor 7 does not allow the rotor to rotate in one or the other direction, and thus provides a snap-on permanent connection of the housing 1 with the rotor 7.

After locking by the combined position of the flat protrusions 16 and 17, respectively, on the housing 1 and the rotor 7 (seal closure indicator), you can visually judge the status of the locked position of the seal.

The handle 9 may be affixed with appropriate marking that duplicates the information on the seal.

In contrast to the known seals, the proposed seal is monoblock, since the flexible covering element (cable segment) is fixed in the housing, which, in turn, provides ease of use, since there is no need to manipulate two separate parts when locking (the housing and the flexible covering element - cable segment), as is the case when using known rotary seals.

Moreover, to lock the latter at the beginning, it is necessary to pass through the side holes in the housing and the rotor the passive end of the flexible gripping element, then rotate the rotor several times to secure it. It takes time and certain skills.

The proposed seal is easy to operate and has increased resistance to tampering.

Claims (5)

1. A rotary seal containing a housing with through holes for entering and leaving a flexible female element having passive and free ends, and a rotor mounted rotatably in the housing having a through hole for a flexible female element, a handle for rotating the rotor, and means for forming snap-on permanent connection of the casing and the rotor, characterized in that the means for forming a snap-on permanent connection of the casing and the rotor is made in the form located in the groove of the housing the spring, interacting when locking with a counter groove made in the rotor, while the housing is equipped with an annular cylindrical sample with a depth equal to at least the thickness of the flexible enclosing element, the passive end of which is rigidly fixed in the housing, while the rotor is provided symmetrically arranged relative to the axis of the reciprocal through holes with holes for the protrusions that the handle is equipped with. 2. The rotary seal according to claim 1, characterized in that the housing is made in the form of a flat body with a cylindrical side surface, and the groove is cylindrical and blind and is located closer to the side surface and the opening for the entrance of the enclosing element and perpendicular to its axis. 3. The rotary seal according to claim 1, characterized in that the seal is equipped with a seal closure indicator made in the form of two flat protrusions, one of which is located on the housing, and the other is located on the rotor, which are combined in the closed position of the seal. 4. The rotor seal according to claim 1, characterized in that in the housing on the rear side there is a seat for the washer, rigidly connected to the rotor and allowing free rotation of the rotor in the housing. 5. The rotary seal according to claim 1, characterized in that in the position prepared for locking the seal, the spring located in the groove of the housing interacts with a recess made in the rotor.

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