JP2002153777A - Seal structure of washing liquid jetting part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the seal structure of a washing liquid jetting part capable of easily and certainly preventing the leak of washing liquid. SOLUTION: A connection part 11 capable of receiving a seal block 2 is provided to the upper surface of a header 1. The seal block 2 is reduced in diameter at one end part 21 corresponding to the shape of the connection part 11 and a washing liquid passage 23 is allowed to pierce through the seal block 2 from one end part 21 to the other end part 22 of the seal block and a nozzle part 24 is formed to the other end part 22. A space 25 for holding a rotary nozzle shaft 3 in the seal block 2 in a rotatable manner is provided on the way of the passage 23. A cavity part 31 is formed to the rotary nozzle shaft 3 in the axial direction thereof and radial opening parts 32 are formed thereto in the diameter direction thereof. The opening parts 32 are provided axially at a plurality of places to respectively communicate with the cavity part 31. An O-ring is arranged to the gap between the header 1 and the rotary nozzle shaft 1 in the connection part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure for a cleaning liquid jetting section such as a rotary jet nozzle of a bottle washing machine.

[0002]

2. Description of the Related Art FIG. 3 shows a cleaning liquid injection section of a conventional bottle washing machine, and FIG. 4 is a sectional view of a rotary jet nozzle seal section in FIG. The cleaning liquid spraying section of the bottle washing machine includes a header 51 through which the cleaning liquid flows, and a header 5.
1, a fixed seal block 52 fixed to the fixed seal block 52 by welding, a fixed seal block 54 fixed to the fixed seal block 52 with bolts 53, and a movable movable vertically in response to the urging force of a spring 55 (see FIG. 4) and the water pressure of the cleaning liquid. It comprises a seal block 56 and a rotary nozzle 57 whose height is fixed by a bearing. The cleaning liquid flows from the header 51 into the movable seal block 56, and is jetted into the bin when the rotary nozzle 57 is in the illustrated state, and is stopped when the rotary nozzle 57 is rotated 45 degrees from the illustrated state. As a countermeasure for preventing the cleaning liquid from leaking, the movable seal block 56 is pressed against the rotary nozzle 57 by the urging force of the spring 55 and the water pressure of the cleaning liquid between the movable seal block 56 and the rotary nozzle 57 to increase the adhesiveness. Prevention. Also,
A Y-packing 58 is provided in a gap between the movable seal block 56 and the fixed seal block 54, and an O-ring 59 is provided in a gap between the fixed seal block 52 and the fixed seal block 54 to prevent liquid leakage.

[0003]

However, in the conventional rotary jet nozzle seal portion of the conventional bottle washing machine, there are many places that require measures to prevent liquid leakage, and between the movable seal block 56 and the rotary nozzle 57, liquid leakage is prevented. Therefore, the surface roughness accuracy of the contact surfaces of both parts is strictly required. Further, between the movable seal block 56 and the rotary nozzle 57,
As shown in FIG. 5, the V portion of the movable seal block 56 is deformed by the friction torque, so that the adhesiveness is reduced, and there is a possibility that liquid leakage may occur. Further, the seal portion has a complicated structure and a large number of parts. The present invention has been made in view of such a situation, and an object of the present invention is to provide a seal structure of a cleaning liquid ejecting unit that can easily and reliably prevent leakage of a cleaning liquid.

[0004]

SUMMARY OF THE INVENTION A sealing structure for a cleaning liquid ejecting section according to the present invention has been made in order to solve the above-mentioned problem. A rotary valve body having an opening in a radial direction at a predetermined position, and a member connected at the predetermined position in a relationship between the valve body, a hole, and an axis, and one of the valve bodies from one radial direction. While being supported by an elastic member that also serves as a seal,
And a cylinder member having a passage opening across the radial opening, and the opening on the elastic support side of each cylinder member is used as a liquid supply port.

[0005] With this configuration, the cylinder member is unilaterally elastically supported and engaged in the relationship between the valve body, the hole and the shaft, and along the radial liquid supply direction. Is sealed with an appropriate pressing force, and the cylinder and the support are sealed with an elastic support member. The radial passage of the valve element intermittently communicates with the passage of the cylinder member straddling the valve element, intermittently ejects the cleaning liquid, and cleans the container located at the injection port. Further, even if the cylinders are arranged in a plurality of rows, each cylinder exerts the above-described action. Therefore, the cleaning liquid can be intermittently sprayed intermittently to the other rows of containers that are continuously supplied to perform cleaning.

Preferably, the portion for elastically supporting the cylinder member is an O-ring provided at a connecting portion between the cylinder member and the support member for supporting the cylinder member. Since the O-ring is an elastic portion also serving as a seal, the cylinder can be pressed against the rotary valve body with an appropriate elastic force.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a seal structure for a cleaning liquid injection section according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a rotary jet nozzle portion of a bottle washing machine to which a seal structure of a cleaning liquid jetting portion according to an embodiment of the present invention is applied, and FIG. 2 is a cross-sectional view of the rotary jet nozzle portion in FIG. In the seal structure of the cleaning liquid ejecting unit according to the present embodiment, description of a part common to the related art is omitted.

As shown in FIGS. 1 and 2, in this embodiment, a header 1, a seal block (cylinder member) 2, a rotary nozzle shaft (valve element) 3, and an O-ring (seal member) 4
And The header 1 is a longitudinal member, in which a cleaning liquid is flowing, and has a connection portion 11 on an upper surface capable of receiving the seal block 2. The plurality of connection portions 11 are provided at predetermined positions in the longitudinal direction. The connection portion 11 has a concave shape, a reduced diameter portion 12 is formed on the back side, and a hole 13 for supplying the cleaning liquid of the header 1 to the seal block 2 is formed on the back side.

[0009] The seal block 2 includes a connection portion 1 of the header 1.
One end 21 is reduced in diameter corresponding to the shape of FIG. A cleaning liquid passage 23 is provided penetrating from one end 21 to the other end 22, thereby forming a cleaning liquid nozzle 24 at the other end 23. In the middle of the passage 23, a space 25 in which the rotary nozzle shaft 3 can be provided is provided.

The interior of the rotary nozzle shaft 3 has a hollow portion 31 extending in the axial direction, and an opening radially extending from the hollow portion 31 to the peripheral surface at a predetermined position in the axial direction at intervals of 90 degrees in the radial direction. 32 are provided. The O-ring 4 is an elastic member also serving as a seal, and is sandwiched between the header 1 and the seal block 2 in the connection portion 11 of the header 1.

[0011] These components are assembled as follows. As shown in FIG. 1 and FIG.
And a rotary nozzle shaft 3 whose height is fixed by a bearing (not shown) is passed through the seal block 2,
An O-ring 4 is provided in a gap between the header 1 and the seal block 2. The rotary nozzle shaft 3 is connected to a rotation driving means (not shown) and is assembled so as to be rotatable around the axis at a predetermined speed.

Next, the operation of this embodiment will be described with reference to FIGS. The cleaning liquid flows into the seal block 2 from the header 1 and is injected into the bottle when the rotary nozzle shaft 3 is in the state shown in FIG. 2 (see FIG. 3).
Injection stops when rotated 45 degrees from the state shown in FIG.
An O-ring 4 is provided in a gap between the header 1 and the seal block 2, and the O-ring 4 is pressed by the seal block 2. The height of the seal block 2 is also fixed because it passes through the rotary nozzle shaft 3 whose height is fixed to the seal block 2. Thus, the cleaning liquid is prevented from leaking.

Therefore, the present embodiment has the following effects. 1. The only place to prevent liquid leakage is the gap between the header and the seal block, and the countermeasure is a simple method of installing an O-ring. 2. Since the structure is simpler than that of the rotary jet nozzle seal part of the current washing bottle machine, the manufacturing process and the number of parts can be reduced.

[0014]

According to the present invention, there is provided a seal structure for a cleaning liquid jetting section, comprising a header to which a cleaning liquid is supplied from the outside, and a nozzle supported by the header via an elastic sealing member for jetting the cleaning liquid from the header. A cylinder member having a portion, and a cavity portion rotatably held in the cleaning liquid passage inside the cylinder member and extending in the axial direction, and radially extending radially from the cavity portion at a predetermined position in the axial direction. A valve body having an opening that is present, wherein the cleaning liquid is intermittently supplied from the header to the nozzle part through the opening by rotation of the valve body, so that a seal is required. By using only one location, it is easy to prevent the cleaning liquid from leaking, and the structure is simplified, so that the number of manufacturing steps and the number of parts can be reduced.

When the sealing member is formed of an O-ring,
Since the cylinder member can be pressed against the valve body with an appropriate elastic force, and general components can be used, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rotary jet nozzle portion of a bottle washer to which a seal structure of a cleaning liquid injection unit according to an embodiment of the present invention is applied.

FIG. 2 is a sectional view of a rotary jet nozzle in FIG.

FIG. 3 is a perspective view of a conventional bottle washing machine having a sealing structure for a washing liquid injection unit.

FIG. 4 is a sectional view of the rotary jet nozzle of FIG. 3;

FIG. 5 is an enlarged view of a portion V in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Header 11 Connection part 12 Reduced diameter part 13 Hole 2 Seal block 21 One end 22 Other end 23 Passage 24 Nozzle part 3 Rotary nozzle shaft 31 Cavity part 32 Opening part 4 O-ring

Claims (2)

[Claims] 1. A header to which a cleaning liquid is supplied from the outside,
A cylinder member supported by the header via an elastic seal member and having a nozzle portion for spraying the cleaning liquid from the header; and a cylinder member rotatably held in the cleaning liquid passageway inside the cylinder member and extending in the axial direction. A valve body having an existing hollow portion and having an opening radially extending from the hollow portion at a predetermined position in the axial direction, and rotating the valve body from the header through the opening. A seal structure for a cleaning liquid ejecting section, wherein the supply of the cleaning liquid to the nozzle section is performed intermittently. 2. The sealing structure for a cleaning liquid ejecting unit according to claim 1, wherein the sealing member is an O-ring.