JP2009047241A - Flow passage opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flow passage opening/closing device with improved shield performance. <P>SOLUTION: The flow passage opening/closing device 90 comprises an opening/closing cock 40 having a cock flow passage 47 which passes through a columnar body in the radial direction, and an upper case half body 10 which is provided a flow-in passage 20 therein and has a columnar opening/closing cock opening 30 across the flow-in passage. By inserting the opening/closing cock in the opening/closing cock opening and turning the opening/closing cock in the opening/closing cock opening, the flow-in passage is matched with the cock flow passage and closing the flow-in passage by an outer circumferential part of the body to open/close the flow-in passage. The opening/closing cock has a swollen part raised in the radial direction on the outer circumferential part of the body. When the fluid flow passage is closed by the outer circumferential part of the body by turning the opening/closing valve member in an insertion part, the swollen part is abutted on the fluid flow passage to close the fluid flow passage. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a channel opening / closing device that opens and closes a fluid channel.

  Conventionally, an opening / closing cock is attached to a channel member having a fluid channel through which liquid or gas (hereinafter simply referred to as fluid) passes so as to intersect the fluid channel, and the opening / closing cock is rotated. A channel opening / closing device that opens and closes a fluid channel is known (see, for example, FIG. 2 in Patent Document 1). Here, as an example of the above-described flow path opening / closing device, there is one as shown in FIG. Here, in a part of the fluid transport line 300, a flow path opening / closing device 320 is attached so as to intersect the pipe 301 having the fluid flow path 302 therein. The flow path opening / closing device 320 includes a flow path member 303 and an open / close cock 310, and the flow path member 303 has the same shape as the cock cylindrical part 311 of the open / close cock 310, and an insertion part opened in a bottomed cylindrical shape. 304 is formed. And the cock cylindrical part 311 is inserted in the insertion part 304, and it can mutually rotate freely.

  At this time, as shown in FIG. 15 (b), the cock channel 312, which is a through hole formed in the cock cylindrical portion 311, communicates with the fluid channel 302 vertically by turning the tip of the knob 313 downward. Thus, the fluid can pass through the fluid flow path 302. On the other hand, the fluid flow path 302 is shielded by the outer peripheral surface of the cock cylindrical portion 311 by rotating the tip of the knob 313 90 degrees to the left and moving it to the position indicated by the two-dot broken line 314, so that the fluid flow path 302 Is in a closed state.

JP-A-8-165955

  By the way, in the above-described flow path opening and closing device 310, the insertion portion 304 and the cock column portion 311 are close to each other in a rotatable manner and have a slight gap. Therefore, when the fluid flow path 302 is shielded by the outer peripheral surface of the cock cylindrical portion 311, there is a gap between the insertion portion 304 and the cock cylindrical portion 311, and fluid can easily leak from the gap to ensure shielding performance. There was a problem that it was difficult.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a flow path opening / closing device with improved shielding performance when a fluid flow path is closed.

  In order to solve the above-described problems, a flow path opening / closing device according to the present invention includes an open / close valve member in which a flow path hole penetrating in a radial direction is formed in a cylindrical body, and a fluid flow path provided therein, and It is comprised from the flow-path member formed by the cylindrical insertion part which cross | intersects a fluid flow path opening. Then, by inserting the opening / closing valve member into the insertion portion and rotating the opening / closing valve member within the insertion portion, the fluid flow path is aligned with the flow path hole or blocked by the outer peripheral portion of the body. The fluid passage is opened and closed. Here, the opening / closing valve member has a bulging portion bulging in the radial direction on the outer peripheral portion of the body, and the opening / closing valve member is rotated in the insertion portion to cause the fluid flow path to pass through the body. When the outer peripheral part closes, the bulging part contacts the fluid channel and closes the fluid channel.

  In the channel opening and closing device having the above-described configuration, the bulging portion is preferably formed using an elastically deformable material. Further, in the flow path opening and closing device having the above configuration, the insertion portion has a configuration in which a portion facing the bulging portion is widened outward in the radial direction when the fluid flow channel and the flow channel hole are aligned. Is preferred.

  According to the flow path opening / closing apparatus according to the present invention, the open / close valve member has a bulging portion that swells in the radial direction at the outer peripheral portion of the body, and the bulging portion contacts the fluid flow path to Is configured to close. With this configuration, the opening / closing valve member is inserted into the insertion portion to be rotatable, and the bulging portion is in contact with the fluid flow path so as to be in close contact with each other. It is possible to improve the shielding performance when closed.

  Further, since the bulging portion is formed using an elastically deformable material, the bulging portion is elastically deformed and brought into close contact with the fluid flow path, and the bulging portion is formed of a shield member (packing). The structure which plays a role is attained, Therefore It becomes possible to improve a shield performance further. Further, since the bulging portion can be elastically deformed, the shield performance can be stably maintained over a long period of time without damaging the fluid flow path in the portion in contact with the bulging portion.

  Furthermore, when the fluid flow path and the flow path hole are aligned, the portion of the insertion portion that faces the bulging portion is configured to curve outward in the radial direction. That is, when the fluid flow path and the flow path hole are aligned to open the fluid flow path, the bulging portion is not in contact with the insertion portion, and no external force acts on the bulging portion. By doing so, damage can be caused to the bulging portion, or deterioration over time of the bulging portion can be reduced, so that the shield performance can be stably maintained over a long period of time.

  In the following, a preferred embodiment of the present invention will be described with reference to FIGS. Here, for convenience of explanation, the arrow directions shown in FIG. 1 are defined as front and rear, left and right, and up and down. The flow path opening / closing device 90 according to the present invention is used as a part of the filter 1 shown in FIG. 1, for example. More specifically, the flow path opening / closing device 90 includes an upper case half 10 and an opening / closing cock 40 described later.

  The filter 1 using the flow path opening / closing device 90 according to the present invention is attached to a vehicle equipped with an engine using gasoline, light oil or the like as fuel. For example, as shown in FIG. 1, when the supply pump 210 that operates by obtaining driving force from the engine is operated, the fuel in the fuel tank 200 is conveyed to the supply pump 210 via the filter 1 by the generated negative pressure. And is configured to be supplied to the injection system 220. First, the configuration of the filter 1 will be described.

  As shown in FIG. 2, the filter 1 mainly includes a filter case 2 and a filter element 3, and the filter case 2 further includes an upper case half 10 and a lower case half 80. The upper case half 10 is formed in a bottomed cylindrical shape opened downward using, for example, a metal material, and has a female screw 10a, an inflow path 20, an open / close cock opening 30, an open / close cock 40, an outflow path 50, and a bypass path 60. And a priming pump 70. As shown in FIG. 2, the female screw 10a is formed on the inner peripheral surface of the lower end of the upper case half 10 and is formed so as to be screwable with a male screw 80a of the lower case half 80 described later. As shown in FIGS. 1 and 2, the inflow passage 20 is a circular oil passage provided in the upper case half body 10 in a cross-sectional view. The inflow passage 20 opens at the upper end and extends downward, and at the lower end, the inflow space 4a. Communicated with.

  As shown in FIG. 5, the opening / closing cock opening 30 is a bottomed opening provided in the upper case half 10 and extends from the front to the rear. In the opening, a rear perfect circle part 31, an ellipse part 32, and a front perfect circle part 33 having different opening diameters are formed in order from the rear side. In the ellipse part 32, the inflow path 20 communicates in the vertical direction. is doing. As shown in FIG. 6, the rear perfect circle part 31 is opened in a circular shape in cross section, and the front perfect circle part 33 is opened in a circular shape in cross section as shown in FIG. On the other hand, as shown in FIG. 7, the elliptical portion 32 is opened in a substantially circular shape in cross section, and a relief portion 32 c formed on the lower left side is further opened toward the lower left side. Here, the elliptical portion 32 is formed. Are set to 32a and 32b.

  As shown in FIG. 9, the open / close cock 40 is formed in a substantially cylindrical shape that extends in the front-rear direction using, for example, a metal material, and in order from the rear side, the rear part 41, the intermediate part 42, the front part 43, and the switching knob 49. It is composed mainly of. As shown in FIG. 6, the rear portion 41 has a circular shape in cross section, and the diameter thereof is substantially the same as that of the rear perfect circle portion 31. Further, a ring groove is formed along the outer peripheral portion, and an elastic O-ring 41c that is elastically deformed so as to be embedded in the ring groove is attached. Here, the center lines of the rear part 41 are set to 41a and 41b.

  As shown in FIGS. 7 and 9, the intermediate portion 42 is formed in a substantially circular shape in cross section, and its outer peripheral portion is covered with a gasket 45 formed using, for example, an elastically deformable resin material. Yes. Further, the intermediate portion 42 is formed with a cock passage 47 penetrating circularly in the vertical direction. Here, the rear portion 41 and the intermediate portion 42 communicate with the cock passage 47 and extend rearward to open. A circular rear channel 44 is formed. Further, a bulging portion 46 is formed on the outer peripheral portion of the gasket 45, and the bulging portion 46 is formed on the left side with respect to the cock channel 47 penetrating in the vertical direction. Here, the bulging portion 46 is formed of the same material as the gasket 45 and has a larger area than the portion of the inflow path 20 opened above the elliptical portion 32. In addition, as shown in FIG. 7, the center line of the intermediate part 42 is set to 42a and 42b.

  As shown in FIG. 8, the front portion 43 is circular in cross section and has a diameter substantially the same as the front perfect circle portion 33. A ring groove is formed along the outer peripheral portion of the rear portion of the front portion 43, and an O-ring 43c made of resin that can be elastically deformed is embedded around the ring groove. Further, the front outer periphery of the front portion 43 has a holding groove 48 formed at a predetermined depth in an angle range of 90 degrees (range from the left to the top), for example. In addition, a ring portion 43 d protruding in a ring shape is formed at the front end portion of the front portion 43. The switching knob 49 is formed to extend in a plate shape on the left side at the front end of the opening / closing cock 40.

  Here, if the positional relationship of each part of the opening / closing cock 40 is put together, as shown in FIG. 9, the bulging part 46 and the switching knob 49 are formed in the left side of the opening / closing cock 40, and the cock flow path 47 is made up and down. Has penetrated. Further, the central axes in the front-rear direction of the rear portion 41, the intermediate portion 42, and the front portion 43 are the same, that is, the intersection of the center lines 41a and 41b, the intersection of the center lines 42a and 42b, and the intersection of the center lines 43a and 43b. Is the same coordinate on the left, right, top and bottom planes. A retaining groove 48 is formed in a range of 90 degrees from the left to the upper side.

  As shown in FIG. 3, the outflow passage 50 is a circular oil passage provided in the upper case half 10 in a sectional view, and opens at the upper end portion thereof and extends downward, and communicates with the outflow space 4 b at the lower end portion. ing. As shown in FIG. 3, on the front side of the outflow passage 50, the upper and lower air vent holes 14 that communicate with the inflow space 4a and open upward, and further communicate with the upper and lower air vent holes 14 and extend in the front-rear direction. The left and right air vent holes 15 opened on the front side are formed, and the upper and lower air vent holes 14 are fastened with sealing screws 16 from above.

  As shown in FIG. 2, the bypass path 60 mainly includes a left and right channel 61, an intermediate chamber 62, an upper and lower channel 63, and check valves 61 a and 63 a. The left and right passages 61 are oil passages that communicate with the inflow passage 20 and extend to the right above the opening / closing cock opening 30 and communicate with the intermediate chamber 62, and are the left and right passages 61 that communicate with the intermediate chamber 62. A check valve 61a that restricts the flow only in one direction (the direction from the left and right flow passages 61 to the intermediate chamber 62) is installed at the right end of each. The intermediate chamber 62 communicates with a pump chamber 71a of a priming pump 70 described later in front thereof. The vertical flow path 63 is an oil passage that extends downward from the intermediate chamber 62 and communicates with the inflow space 4a. At the lower end of the vertical flow path 63, which is a communication portion with the inflow space 4a, the chuck valve 61a and A check valve 63a that has the same function and restricts the flow only from the vertical flow path 63 to the inflow space 4a is provided.

  As shown in FIG. 14, the priming pump 70 is a reciprocating pump and mainly includes a cylinder 71, a pump chamber 71 a, a handle 72, a plunger 73, a piston portion 74, a rod portion 75, and a seal member 76. A pump chamber 71 a communicating with the intermediate chamber 62 of the bypass path 60 is formed at the rear end of the cylinder 71, and a plunger 73 is inserted into the cylinder 71 from the front to the rear. Can reciprocate back and forth in the cylinder 71. Furthermore, the plunger 73 includes a piston portion 74 that reciprocates in the cylinder 71, a rod portion 75 that connects the piston portion 74 and a handle 72 that is manually operated, and a sliding portion that is provided in the piston portion 74 and the cylinder 71. It is comprised from the sealing member 76 hold | maintained liquid-tight.

  The lower case half 80 is formed in a bottomed cylindrical shape opened upward using, for example, a transparent resin material, and has a male screw 80a and a rib 80b. The male screw 80a is formed on the outer peripheral surface of the upper end of the lower case half 80, and can be screwed with the female screw 10a of the upper case half 10 described above. A plurality of ribs 80b are formed at the cylindrical bottom portion of the lower case half 80, and they are radially arranged around the vertical direction and are formed to extend vertically. In addition, the upper end surfaces of the plurality of ribs 80b are horizontal to form an element placement portion 80c.

  In this embodiment, the flow path opening / closing device 90 according to the invention is configured with the above-mentioned upper case half 10 and the opening / closing cock 40 as constituent members, but more specifically, is formed so as to surround the opening / closing cock 40. A part of the upper case half 10 and the opening / closing cock 40 are formed. Here, the open / close valve member in the claims corresponds to the open / close cock 40 in the present embodiment. Similarly, the flow passage member is the upper case half 10 and the fluid flow passage is the inflow passage 20. The portions correspond to the opening / closing cock openings 30 respectively.

  The filter element 3 is formed in a thin cylindrical shape extending vertically, and a filter medium 3b bent in a bellows shape is wound around an inner cylinder 3a formed in a lattice shape. Further, an upper plate 3 c formed in a disc shape and having an opening in the center is fixed to the upper end portion of the filter element 3, and a disc-shaped lower plate 3 d is fixed to the lower end portion of the filter element 3. .

  The configuration of the filter 1 has been described so far, but the assembly procedure of the filter 1 will be described below.

  First, the filter element 3 is placed in the lower case half 80 so that the lower surface of the lower plate 3 d of the filter element 3 is in contact with the element placement portion 80 c of the lower case half 80. At this time, the filter element 3 is held by a holding member 81 provided in the lower case half 80. Next, the lower case half 80 holding the filter element 3 is inserted into the upper case while the outflow passage 50 of the upper case half 10 is inserted into the opening of the upper plate 3 c provided at the upper end of the filter element 3. Push up toward the half 10 from below.

  Next, the lower case half 80 is screwed into the upper case half 10 so that the male screw 80a of the lower case half 80 and the female screw 10a of the upper case half 10 are screwed together. When the screwing of the lower case half 80 into the upper case half 10 is completed, the filter element 3 is accommodated and held in the element arrangement space 4 while being sandwiched between the upper and lower case halves 10 and 80. The At this time, the space between the upper case half 10 and the filter element 3 is tightly sealed by the ring-shaped sealing member 82 and is in a liquid-tight state.

  Next, the opening / closing cock 40 is attached to the opening / closing cock opening 30 of the upper case half 10. Here, the opening / closing cock 40 is inserted into the opening / closing cock opening 30 from the front side to the rear side, so that the ring portion 43d is inserted to a position where it abuts against the facing surface 13 of the upper case half 10. Further, by inserting the switching knob 49 so as to be positioned on the left side, the inflow passage 20 and the cock passage 47 communicate with each other in the vertical direction (see FIG. 5). At this time, the rear portion 41 of the opening / closing cock 40 and the rear perfect circle portion 31 of the opening / closing cock opening 30 are rotatable in proximity to each other, and similarly, the front portion 43 is also adjacent to the front perfect circle portion 33. It is free to rotate.

  Further, at this time, as shown in FIG. 7, the escape portion 32c of the oval portion 32 and the bulging portion 46 of the intermediate portion 42 are separated from each other with a predetermined interval, while the oval portion 32c is a portion other than the escape portion 32c. The part 32 and the intermediate part 42 are close to each other and freely rotatable. Further, in this inserted state, the O ring 41c contacts the rear perfect circle portion 31 and deforms to be sealed to be in a liquid-tight state. Similarly, the O ring 43c contacts the front perfect circle portion 33 and deforms. In this way, the liquid is sealed. Therefore, the opening / closing cock opening 30 is sealed in the front-rear direction in a region sandwiched between the O-ring 41c and the O-ring 43c and is in a liquid-tight state.

  Then, at the position facing the holding groove 48 of the opening / closing cock 40, the set screw 12 is inserted and fastened into the set screw hole 11 opened to the upper case half 10 in the vertical direction. It becomes possible to regulate movement. At this time, as shown in FIG. 7, the center lines 32 a and 32 b of the ellipse portion 32 are located on the lower left side with respect to the center lines 42 a and 42 b of the intermediate portion 42. The center line 42a and the center line of the inflow path 20 in the left-right direction coincide with each other.

  The assembly procedure of the filter 1 has been described so far. Hereinafter, the flow of fuel in the filter 1 assembled as described above will be described. First, the flow of fuel at the normal time (when the priming pump 70 is not operated) will be described.

  The fuel that has flowed into the inflow path 20 from the outside (the fuel tank 200) proceeds in the direction indicated by the solid line 20a in FIG. 4 and passes through the cock flow path 47 of the open / close cock 40, thereby flowing in without passing through the bypass path 60. It flows into the space 4a. The fuel that has flowed into the inflow space 4a passes through the filter element 3 and proceeds to the outflow space 4b. Further, the fuel passes through the outflow space 50 from the outflow space 4b and is conveyed to the outside (supply pump 210). Yes. At this time, a part of the fuel that has flowed into the inflow path 20 travels in the direction indicated by the chain line 20b in FIG. 4 to enter the inflow space 4a via the left and right channels 61, the intermediate chamber 62, and the upper and lower channels 63. Inflow.

  Next, the flow of fuel when the priming pump 70 is manually operated in the air venting operation in the element arrangement space 4 or when the engine is started for the first time will be described with reference to FIGS.

  First, as a step before operating the priming pump 70, in the normal state described above, the set screw 12 is loosened so that the open / close cock 40 is rotatable up and down, left and right, and then rotated 90 degrees upward. As shown in FIG. 13, the cock channel 47 is directed in the left-right direction. At this time, the opening / closing cock 40 rotates around the central axes of the columnar rear portion 41 and the front portion 43 as the rotation center. The bulging part 46 can completely seal the inflow path 20 by contacting and deforming the bulging part 46 at a portion communicating with the inflow path 20 above the elliptical part 32. ing. Here, the bulging portion 46 is deformed by contacting with the height (radial length) from the outer peripheral surface of the gasket 45.

  In this state, the handle 72 of the priming pump 70 shown in FIG. 14 is reciprocated in the front-rear direction. First, by pulling the handle 72 forward, the fuel flows from the left and right flow passages 61 through the check valve 61a and flows into the intermediate chamber 62. At this time, the check valve 63a is closed. Next, by pushing the handle 72 rearward, the fuel in the intermediate chamber 62 passes through the upper and lower flow paths 63 and the check valve 63a and flows into the inflow space 4a. At this time, the check valve 61a is closed. Therefore, it is possible to cause the fuel to flow into the inflow space 4a without causing the fuel to flow backward in the bypass passage 60 by manual operation.

  Thus, by reciprocating the handle 72, all the fuel that has flowed into the inflow path 20 from the outside in the direction indicated by the solid line 20c in FIG. 11 flows into the inflow space 4a via the bypass path 60. At this time, the sealing screw 16 is loosened to allow the upper and lower air vent holes 14 and the left and right air vent holes 15 to communicate with each other. It can be discharged. The fuel in the inflow space 4a passes through the filter element 3 and proceeds to the outflow space 4b, and is further conveyed from the outflow space 4b to the supply pump 210 through the outflow path 50.

  Here, the effects of the flow path opening / closing device 90 according to the present invention will be briefly summarized. First, in a state where the inflow path 20 is closed, the bulging portion 46 contacts and deforms on the upper side of the elliptical portion 32. Thus, since the inflow path 20 is shielded in a liquid-tight state, fuel does not leak from the shield portion. Further, at this time, since the bulging portion 46 is formed by using an elastically deformable resin material, the upper side of the elliptical portion 32 is not damaged, and thus the shielding performance is stably maintained over a long period of time. It becomes possible.

  Secondly, in the state where the inflow path 20 which is a normal use state is opened, the inflow path 20 is located away from the oval part 32 (the escape part 32c). Thereby, in the state where the inflow passage 20 is opened, no extra external force acts on the outer peripheral portion of the opening / closing cock 40, and the bulging portion 46 is reduced in deterioration of the resin and suppressed in the shielding performance. Therefore, it is possible to stably maintain the shielding performance of the open / close cock 40 over a long period of time.

  In the above-described embodiment, the bulging portion 46 is configured to close the inflow passage 20 by contacting the upper side of the elliptical portion 32 and deforming, so that the material of the bulging portion 46 is, for example, elastic deformation It is preferably formed of a resin that is oil resistant.

  In the above-described embodiment, the filter element 3 has a shape and material wound around the filter medium folded in a bellows shape (around the inner cylinder formed in a lattice shape) as described above. You may use what was formed cylindrically with the glass fiber, the nonwoven fabric, etc. which have predetermined | prescribed thickness. Furthermore, a combination of these materials or a sintered product formed in a cylindrical shape may be used, and an optimal material and shape can be selected according to the liquid to be filtered or the solid matter to be removed. Is possible.

It is the perspective view which showed the filter comprised using the flow-path opening / closing apparatus which concerns on this invention. It is sectional drawing which shows the II-II part in FIG. It is sectional drawing which shows the III-III part in FIG. It is the expanded sectional view which expanded the inflow path part of FIG. It is sectional drawing which shows the VV part in FIG. It is sectional drawing which shows the VI-VI part in FIG. It is sectional drawing which shows the VII-VII part in FIG. It is sectional drawing which shows the VIII-VIII part in FIG. It is the perspective view which showed the opening / closing cock. (A) is a plan view of the open / close cock as viewed from above, (b) is a rear side view of (a), (c) is a front side view of (a), and (d) is a left side of (a). It is a side view. It is an expanded sectional view which shows the inflow path part when an opening-and-closing cock is closed. It is sectional drawing which shows the VV part in FIG. 1 when an opening-and-closing cock is closed. It is sectional drawing which shows the XIII-XIII part in FIG. It is sectional drawing which shows the XIV-XIV part in FIG. (A) is the top view which showed the conventional flow-path opening / closing apparatus, (b) is sectional drawing which showed the XV (b) -XV (b) part of (a).

Explanation of symbols

10 Upper case half (channel member)
20 Inflow channel (fluid channel)
30 Opening and closing cock opening (insertion part)
40 Open / close cock (open / close valve member)
46 Swelling part 47 Cock channel (channel hole)
90 Channel opening / closing device

Claims (3)

An open / close valve member in which a flow path hole penetrating in a radial direction is formed in a cylindrical body;
A fluid flow path is provided inside and a flow path member formed by opening a cylindrical insertion portion that intersects the fluid flow path,
By inserting the opening / closing valve member into the insertion portion and rotating the opening / closing valve member within the insertion portion, the fluid flow path is aligned with the flow path hole or closed by the outer peripheral portion of the body. In the channel opening and closing device that opens and closes the fluid channel,
The on-off valve member has a bulging portion that swells in the radial direction at the outer peripheral portion of the body,
When the opening / closing valve member is rotated in the insertion portion and the fluid passage is closed by the outer peripheral portion of the body, the bulging portion contacts the fluid passage and closes the fluid passage. A flow path opening and closing device.   The flow path opening / closing device according to claim 1, wherein the bulging portion is formed using an elastically deformable material.   The portion of the insertion portion that faces the bulging portion when the fluid channel and the channel hole are aligned is widened outward in the radial direction. Channel opening and closing device.

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