JPS604407B2 - waltmann type water meter - Google Patents

Description

[Detailed description of the invention] The present invention relates to a Wortmann type water meter.

Water meters of this type are known in various embodiments. According to a known arrangement, the totalizing meter has an indicating mechanism with a sealing plate separating the non-liquid part from the liquid part, and further includes:
The housing of the indicating mechanism that houses the measuring mechanism is provided with a transparent cover for the scale plate of the measuring mechanism. The cover is removably coupled to the housing of the indicator mechanism via a headed screw, the body of the headed screw passing through a hole in the housing of the indicator mechanism, and the threaded portion of the headed screw being in the sealing plate. Can be restrained. Furthermore, an adjustment screw is provided which is combined with the adjustment vane in the liquid part and can be operated directly by hand from the non-liquid side, and this adjustment screw penetrates the sealing plate and projects into the notch in the housing of the indicator mechanism. ing. Furthermore, another faceted screw is provided, the head of which engages in a recess in the housing of the indicating mechanism, the Tsukioka passes through the sealing plate, and the threaded part is capable of being restrained in the measuring insert. In order to prevent unauthorized persons from touching the indicating mechanism or measuring insert, or from operating the adjustment screws by unauthorized persons, a suitable number of Safety devices, especially seal safety devices, must be provided.

This not only increases the manufacturing costs of this type of equipment, but also requires a large number of work steps, e.g. when repairing or reconditioning, when working on parts that are properly secured during use. I need. This is where the idea of the present invention begins.

The object of the present invention is to improve this type of water meter so that during use, only a small amount of operation is required to remove the safety devices on the parts that are properly protected, and these safety devices can be removed. The goal is to minimize manufacturing costs. The task is to configure each one of the headed screws that can be restrained to the sealing plate and the measuring insert as a sealing screw, and to make it possible to operate the adjustment screw by hand only in the loosened position of the sealing screw that can be restrained to the sealing plate. A safety device is provided, which is solved by the sealing line of the sealing safety device passing through the heads of both sealing screws. In a further development of the invention, the safety device consists of a sliding piece that can be moved into two end positions, which sliding piece is arranged in the actuating position of the sealing screw (first
In the second end position), a notch in the housing of the indicator mechanism on the operating side of the adjusting screw is covered, and in the loosened position of the sealing screw (second end position) this notch is opened.

It is preferable that a sliding piece is provided in a notch made in the end face of the housing of the indicating mechanism closer to the cover of the scale plate.

The slide has a projection which rests in each case on an associated stop in both end positions. Advantageously, in the area of the hole in the housing of the sealing screw and of the indicating mechanism in which it is accommodated, a recess is provided for accommodating the seal of the sealing safety device.

According to another feature of the invention, the housing of the indicating mechanism includes:
A passage is provided for housing the seal wire of the seal safety device, and this passage serves as a notch for housing the seal of the seal safety device and a recess for housing the screw head of the seal screw. A housing of the indicating mechanism is provided with a lid that shields the seal of the sealing safety device from the outside.

By means of the measures according to the invention, the size of the safety device can be reduced to a minimum, so that during repairs or readjustments, each part of the device that is fitted with the safety device can be reassembled with only a few working steps. can be removed or replaced. Embodiments of the Wortmann type water meter according to the present invention will be described in detail below with reference to the drawings.

Figure 1 of the drawings is an exploded view of the indicating mechanism of the Wortmann type water meter, that is, the so-called "non-liquid side". Not shown.

The liquid side consists of the housing of the water meter as is known;
An indicating mechanism is inserted within the housing. An impeller is provided in the housing of the water meter, to which a liquid, for example water, is led via a path in the housing and this quantity is measured. A worm is provided on the impeller shaft, and this worm engages a worm gear supported on the shaft. This shaft is connected via a gearing to a driven shaft, which acts on the integrating mechanism. With code 1,
The transparent cover of the dial of the indicating mechanism is shown, and at 2 the housing housing the measuring mechanism is designated. This housing has a substantially truncated conical shape, and a scale plate is attached to the upper end surface 2a, but this is not shown in the drawings for the sake of clarity. A sealing plate 3 is provided below the housing 2 of the indicating mechanism, which sealing plate separates the non-liquid side of the device from the liquid side.

The transparent cover 1 can be removably connected to the housing 2 of the indicating mechanism via headed screws 4, 5, and the barrels 4a, 5a of the headed screws are connected to the holes 6, 5 in the housing 2 of the indicating mechanism.
7, and the threaded portions 4b, 5b of this headed screw are screwed into corresponding threaded holes 8 in the sealing plate 3.

Reference numeral 9 designates an adjusting screw, which is connected to an adjusting vane in the liquid part.

Since the liquid part is not shown in the drawings as it is known, the adjusting blades are also not shown. The adjustment screw 9 passes through the sealing plate 3, and has a slit 9a at its non-liquid end into which a screwdriver or the like can be inserted.
have. The adjustment screw 9 is connected to the housing 2 of the indicating mechanism.
protrudes into a notch 10 in the transparent cover 1, which notch is aligned with a corresponding notch in the transparent cover 1. Reference numerals 12, 13 indicate further headed screws, the heads 12a, 13a of which engage in recesses 14 in the housing 2 of the indicating mechanism and Tsukioka 12b, 13b pass through the hole 15 of the sealing plate 3, and the threaded portions 12c, 13c of these faceted screws can be restrained in a measuring insert (not shown).

As the drawings clearly show, both headed screws 5 and 13 are configured as sealing screws, and the sealing line 16 of the sealing safety device including the seal 17 covers the heads 5c and 13a of both headed screws 5 and 13. Penetrating.

For this purpose, corresponding holes are provided in both heads 5c and 13a. Reference numeral 18 designates a safety device which allows direct manual manipulation of the adjusting screw 9 only in the loosened position of the faceted screw 5, which is designed as a sealing screw.

This safety device 18 consists of a sliding piece which can be moved into two end positions, which in the operating position shown in FIG. 1 (first end position) of the headed screw 5 configured as a sealing screw. A notch 10 in the housing 2 of the indicating mechanism on the operating side of the adjusting screw 9 is covered, and this notch is opened in the loosened position (second end position) of the headed screw 5. A safety device in the form of a slide is provided in a recess 19, which is made in the end face of the housing 2 of the indicator mechanism closer to the cover of the scale plate.

The sliding piece has a projection 18a, which rests in each case on a stop 20 or 21 of one accessory 0 in the two end positions. Faceted screw 5 configured as a sealing screw
The hole 7 in the housing 2 of the indicating mechanism houses the body 5a of the
Notch 2 for housing the seal 17 of the seal safety device in the range of
2 is provided.

In the housing 2 of the indicating mechanism, there is a seal line 1 of the seal safety device.
6, which connects the cutout 22, which houses the seal 17 of the sealing safety device, with the recess 14, which houses the screw head 13a of the faceted screw 13, which serves as a sealing screw. .

As shown in FIG. 4 of the drawings, the housing 2 of the indicating mechanism is provided with a lid 24 for shielding the seal 17 of the seal safety device from the outside.

For this purpose, this lid 24 has the shape of a truncated cone, and in the closed position of the lid 24 the outer cylindrical surface of this lid rests tightly against the outer cylindrical surface of the housing 2 of the indicating mechanism. As can be seen in FIG. 1 of the drawings, the housing 2 of the indicating mechanism has an approximately truncated conical shape.

A window-shaped notch 26 is provided on the outer cylindrical surface of this truncated cone to accommodate a rectangular type display plate 26 (FIG. 3). One vertical shaft 26a of this type display plate 26 engages with a notch 27 (Fig. 3) on the outer cylindrical surface of the truncated cone-shaped housing 2 of the indicating mechanism, and the model number is In order to prevent the display panel 26 from being removed unnecessarily, a groove 28 (FIG. 2) is formed to accommodate the vertical edge 26b. If the cover 1 of the scale plate is connected to the housing 2 of the indicating mechanism, the type plate 26 can only be removed if it is destroyed. In order to explain how the safety devices work for parts of this type of equipment that should be properly protected,
An exploded view according to FIG. 1 of the drawings is used.

First, the cover 1 of the scale plate is engaged with the housing 2 of the indicating mechanism, which is further connected to the sealing plate 3. This connection is carried out using headed screws 4 and 5, which pass through the notches la in the cover of the scale plate and the holes 6, 7 in the housing 2 of the indicator mechanism, and threaded into the threaded part 4b or 5b engages with a screw hole 8 in the sealing plate 3. The safety device 18 is in the position shown in FIG. 1, in which it opens the hole 7 but only closes the recess 10 in the housing 2 of the indicating mechanism from above by using the headed screw 5. cannot be introduced into hole 7. As a result, the adjusting screw 9 that is engaged with this notch cannot be directly operated by hand. These three parts 1
, 2 and 3 are connected to each other, the "model display plate 26"
will never come off. After joining the above three parts 1 and 3, the headed screws 12 and 13 are inserted into the holes 15 in the sealing plate 3, and the threaded parts of these headed screws 12 and 13 are connected to the measuring insert. It is restrained by the corresponding threaded part in the. At that time, the heads 12a of the screws with faces 12, 13,
13a partially engages in the recess 14. Installation of the seal line 16 can then begin. For this purpose, a wire 16 is guided through the hole 5d in the head 5a of the face screw 5 and through the two holes lb in the transparent cover l. The sealing wire 16 is led through the two holes 13d in the heads 13a of these screws 13, the channels 23 serving to accommodate the sealing wire 16. Both ends of the seal line 16 are provided with seals IT which fit into the notches 22. Finally, lid 2
4 is swung to the closed position, so that the seal line 16 is shielded from the outside. What is important for the Waltmann type water meter according to the present invention is that only a very small number of elements and work processes are required in each part of the water meter, which should be properly protected by safety devices to prevent unauthorized persons from touching it. This means that safety devices can be applied. What must not be ignored in this case is that the head screws 5 and 13 used as sealing screws are simply notches 5d and 13d.
It differs from a normal headed screw only in that
This means that regular headed screws are also required in conventional devices. If a sealed safety device is not used, the parts that should be properly secured can basically be secured only by a safety device configured as a simple sliding piece, which is extremely simple to manufacture and assemble. The removal of parts 1 to 3 is carried out accordingly, but in reverse order.

[Brief explanation of the drawing]

Fig. 1 is an exploded view of the indicating mechanism of the Wortmann type water meter according to the present invention, Fig. 2 is a cross-sectional view taken along the low day line in Fig. 1, and Fig. 3 is a cross-sectional view taken along the m-plate line in Fig. 1. , FIG. 4 is an isometric view of an indicator mechanism with a lid attached to the indicator mechanism of a Wortmann water meter according to the present invention. 1...・Cover, 2...Housing, 3
...Sealing plate, 5, 13...Sealing screw, 7...
...hole, 9...adjustment screw, 10...notch, 13...
Seal screw, 14... recess, 16... seal line, 17... seal, 18... safety device,
20, 21...stopper, 23...passage,
24... Lid " 27... Notch, 28...
··groove. Row 9b row? ．． 2 Usuka evening. Mu

Claims (1)

[Claims] 1. Consists of a sealing plate that separates the non-liquid part from the liquid part, a housing for the indicating mechanism that houses the measuring mechanism, and a transparent cover for the scale plate of the measuring mechanism, and this cover is used to attach the headed screw. The body of the headed screw passes through a hole in the housing of the indicating mechanism, and the threaded portion of the headed screw can be restrained by a sealing plate, and the body of the headed screw can be removably coupled to the housing of the indicating mechanism through the housing. An adjustment screw is provided which is connected to one adjustment vane and which can be operated directly by hand from the non-liquid side, this adjustment screw passing through the sealing plate and protruding into a cutout in the housing of the indicator mechanism, and another headed screw is provided. provided, the head of the headed screw engages a recess in the housing of the indicating mechanism, the body of the headed screw passes through the sealing plate, and the threaded portion of the headed screw is restrained to the measuring insert. Possibly, each one of the headed screws that can be fastened to the sealing plate 3 and the measuring insert is configured as a sealing screw (5 or 13);
A safety device 18 is provided that allows the adjustment screw 9 to be operated directly by hand only in the loosened position of the sealing screw 5 that can be restrained by the sealing plate 3, and the sealing line 16 of the sealing safety device is connected to both sealing screws (5 or 13). head (5c or 13a
) is a Waltmann type water meter that is characterized by penetrating it. 2. The safety device 18 consists of a sliding piece which can be moved into two end positions, which in the actuating position of the sealing screw 5 (first end position), which can be restrained in the sealing plate 3, on the actuating side of the adjusting screw 9; Notch 1 in the housing 2 of the indicator mechanism of
2. The water meter according to claim 1, wherein the notch 10 is opened in the loosened position (second end position) of the sealing screw 5. 3. Claim 2, characterized in that a sliding piece is provided in a cutout 19, which cutout is made on the end face of the housing 2 of the indicator mechanism closer to the cover 1 of the scale plate. Water meter as described in . 4. The sliding piece has a projection 18a, which in both end positions in each case engages one associated stop (20
or 21), the water meter according to claim 2 or 3. 5. A notch 22 for housing the seal 17 of the seal safety device is provided in the range of the hole 7 in the housing 2 of the indicating mechanism for housing the barrel 5a of the seal screw 5,
A water meter according to any one of claims 1 to 3. 6 Sealing wire 1 of the safety device sealed to the housing 2 of the indicating mechanism
A passage 23 for housing the seal 17 of the seal safety device is provided, and this passage connects the seal screw 13 with a notch 22 housing the seal 17 of the seal safety device.
The water meter according to any one of claims 1 to 3 and 5, characterized in that the water meter is connected to a recess 14 that accommodates a screw head 13a of the water meter. 7 Seal 1 of the seal safety device is attached to housing 2 of the indicating mechanism.
Claims 1 to 3, characterized in that a lid 24 is provided to shield 7 from the outside.
The water meter according to one of clauses 5 and 6.