KR910008557Y1 - Valve - Google Patents

Abstract

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Description

Opening and closing indicator of valve for fire truck

1 is an exploded perspective view of the present invention.

2 is an exemplary view showing an operating state of the present invention, Figure 2a is a side view showing the open state of the valve, Figure 2b is a side view showing the closed state of the valve.

* Explanation of symbols for main parts of the drawings

1: Ball body 2: Valve

3: axis 3a: axis end

5, 5 ': casing 6: worm

7: Worm Gear 8: Handle

9, 9 ': Stopper 11: Limit switch

12: indicator

The present invention forms a worm gear engaged with a worm on the support shaft of a disk valve installed in the valve body, and operates the worm with a handle to open and close the valve in a 90 degree range. The limit switch is installed inside the casing in which the worm gear is installed. When the disc valve is completely closed, the worm gear's contact piece touches the limit switch to form an indicator at the support shaft end of the disc valve to allow the fire truck driver's seat to detect the closed state of the valve. It relates to a switchgear indicating device of the valve for fire trucks that can be detected.

Conventionally, the disc valve is adhered to the inside of the valve body, and the axis of the valve is rotated by the worm and the worm gear to open and close the disc valve.However, when the valve valve is used as a fire fighting valve for a fire truck, how does the disc valve open and close by only operating the handle? If the water does not come out even when the disc valve is opened by operating the handle in an emergency situation and there is no water, it is difficult to determine the cause quickly and there is a problem that the time is delayed and the disc valve is completely closed even after use. There is a closed end that does not know the leak from the hose because it is not, and especially the valve of the fire truck has a high water pressure, there is a problem of high leakage rate if the disc valve is not completely closed.

The present invention is to fix the problems of the disc valve of the fire trucks that require the urgency and safety when the disc valve is attached to the valve body by the shaft and the worm and the worm gear are installed inside the casing to operate the handle formed on the shaft of the worm from side to side. In the well-known method of opening and closing the valve in a left and right 90 degree range by a gear, a limit switch is installed inside one side of the casing, and the contact piece of the worm gear connects the limit switch under the condition that the disc valve is completely closed, thereby limiting it in the driver's seat of the fire truck. It is possible to detect the opening and closing state of the disc valve by turning on and off the indicator light connected to the switch.In addition, the indicator port is formed on the supporting shaft end of the disc valve through the casing shaft hole. So that the opening and closing of the valve can be easily grasped from the outside Compared with the conventional one, the valve can be safely closed to prevent water leakage after simultaneous use that can be extinguished more quickly. Thus, the present invention will be described in detail with reference to the accompanying drawings.

The worm 6 and the worm gear 7 are provided inside the casing 5 and 5 ', which adhere the disc valve 2 to the support shaft 3 inside the valve body 1 and adhere to the mounting plate 4 on one side of the body. ), The worm gear 7 is pivotally inserted into the support shaft 3 of the valve, and the handle 8 formed on the support shaft 6 'of the worm 6 is operated to move the worm gear 7 to the left and right stopper inside the casing. 9), in the well-known method of opening and closing the valve 2 by rotating it in a 90 degree range in contact with (9 '), by installing a limit switch 10 inside one side of the casing 5 in which the worm gear 7 is installed, In the condition where the valve 2 is completely closed, the contact surface 7 'of the worm gear 7 connects the limit switch 10 so that the indicator light 11 installed in the driver's seat of the fire truck can be turned on, and thus the casing 5'. (12) coincides with the indication of the closing indication of the square) and is inserted into the indicator hole (12) having the fastening pin (12a) into the shaft hole (5 ") of one side casing (5 '). Pinched in 3b The fastening pin 12a is inserted into and fixed in the insertion recess 12b of the worm gear 7 so that it rotates in the same manner as the rotation of the worm gear 7. Since it tightly fits into the square shaft hole 3b, the disk valve 2 in the valve body 1 is opened and closed while rotating together with the rotation of the worm gear 7 so that the fastening pin 12a of the indicator 12 is Since it is fixed to the insertion recess 12b formed in the square shaft hole 3b, that is, it is fastened to the square shaft hole 3b, which is the same shaft hole, so that the operation state of the valve 2 can be understood as the indicator 12.

Reference numeral 11 'is a conductive wire.

The present invention, as described above, rotates the handle 8 to one side as shown in FIG. 2a to open the disc valve 2 to one side with a small force by the worm 6 and the worm gear 7, thereby removing water from the water tank of the fire truck. When sprayed by the hose and rotated to the other side as shown in FIG. 2b, the high pressure is achieved by the worm 6 and the worm gear 7 and the disc valve 2 is closed to allow the water to flow. Bar At this time, when the disk valve 2 is rotated to the other side and opened by the operation of the handle 8 while the disk valve 2 is closed, the worm gear 7 rotates to the other side with the disk valve 2 to limit the limit. Indicator 10 moving at the same angle as the simultaneous disc valve that the switch 10 and the contact piece 7 'are separated and the indicator light 11 installed in the driver's seat is turned off by the opening of the limit switch 10, indicating that the disc valve is being opened. Open phase of disc valve by 12 Can be determined from the outside, and when the disc valve 2 is completely closed by operating the handle 8 in the opposite direction, the worm gear 7 is also caught by the one stopper 9 'and stopped. The contact valve 7 'connects the limit switch 10 to turn on the indicator 11 to detect the closed state of the disc valve by the simultaneous indicator 12 which can sense the closed state of the disc valve. The limit switch is installed inside the casing of the worm gear that operates the disc valve, and the indication port is formed at the end of the valve shaft.This is different from the conventional valve mechanism. The opening and closing degree can be immediately identified by the indicator and limit switch, so the valve can be safely prevented from leaking water after simultaneous use. There is an effect that it is possible to use more safe and convenient, such as it can be both closed.

Claims (1)

The worm 6 and the worm gear 7 are provided in the casing 5 and 5 ', which adhere the disc valve 2 to the support shaft 3 in the valve body 1, and adhere to the body 4 side fitting pipe 4. And the worm gear 7 is inserted into the valve support shaft 3 to form the handle 8 on the support shaft 6 'of the worm 6, and inside the casing 5 where the worm gear is installed. A limit switch 10 for indicating a closed state of the valve is provided so that it can be connected to the contact piece 7 'of the worm gear 7, and the indicator port directed through the shaft hole 5 "of the one side casing 5' ( The fastening pin 12a of 12 is fixed to the insertion recess 12b formed in the square shaft hole 3b of the worm gear, and the indicator valve 12 is inserted into and connected to the disc valve 2 support shaft terminal 3a in the square hole 3b. ) Opening / closing indication device of fire engine valve mounted so that) can be operated at the same angle as disc valve.