JPH02501136A - Screw connector for attachment to container opening - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] A screw connector for attaching to a container opening The present invention is for attaching to a container opening. A screw connector having the features of the preamble of claim 1 for The present invention relates to a screw connector that connects a pipe fitting connected to the screw connector.

When using already known screw connectors of this kind.

After the container is filled with liquid or gaseous fluid, it is connected using a screw connector. When replacing or replacing damaged pipe fittings.

In the case of gaseous media, where special measures have to be taken, the volume should be kept until the pressure equilibrates. Containers must be emptied, and containers filled with liquid must be filled with at least the internal liquid level. The liquid must be drained until the screw is lower than the opening formed by the screw connector. Especially for fittings connected to liquid containers or tanks that are exposed to harsh environments. In some cases, it is often necessary to replace a pipe fitting due to damage to the pipe fitting in question. 0 For example, this may be installed in the tank of a vehicle used at a construction site and This applies to liquid level gauges that allow you to check the liquid level in tanks or hydraulic oil tanks. circle. In the case of level gauges and/or temperature control devices connected to screw connectors: The hole in which the screw connector is installed shall be located near the bottom of the container or tank. Ru. Therefore, in the event of damage, the container or requires the tank to be emptied virtually completely.

It is an object of the invention to make the replacement of connected pipe fittings particularly easy and convenient. We hope to eliminate this inconvenience by providing a screw connector that allows It's there.

This object is achieved by means of a screw connector according to the invention having the characteristics of claim 1. is achieved.

In solving the problem according to this invention, the hollow neck simply secures the fluid connection with the fitting. Not only as a standing connection member, but also at the same time.

Only when the hollow thread is fixed to the container, there is a It also functions as a mechanical actuation member for a check valve that releases the fluid connection. Remove the hollow screw Once the mechanical actuation of the hollow screw is no longer effective, the check valve The fluid connection between the inside and outside of the device is interrupted and the fitting must be replaced or During replacement, the container must be removed, which is unavoidable when using conventional screw connectors. need to be emptied or, in the case of gaseous media, at least under no pressure There is no need to do it.

The invention will now be described in detail with reference to the illustrated embodiments.

Figure 0 is a longitudinal cross-sectional view of one embodiment of a screw connector for connecting a level gauge. The embodiment of the screw connector shown in is also suitable for connecting a level gauge to a hydraulic oil tank. 1, only a portion of the container wall 1 of the hydraulic oil tank is shown. Level gauge display Regarding the tube 3, the lower end portion is shown. An indicator tube extending along the outside of the container wall 1 3 is a connecting part 5 provided on the shank of the hollow screw 9, and an inner hole 7 of the hollow screw 9. oh and communicates with the interior of the container via an internal through hole 11 in the threaded sleeve 13. screw The sleeve 13 extends through a matching opening 15 in the container wall 1 and extends into the interior of the container. External thread 17.extending to end 19 of certain threaded sleeve 13. and threaded three It has a flange-like extension 18 at the opposite outer end of the tube 13.

A hexagonal nut attached to the male thread 17 and fixed in contact with the inside of the container wall 1 The bolt 22 pulls the extension 18 on the outside of the threaded sleeve 13 to tighten the container wall 1. Since the extension part 18 is pressed against the outside of the container wall 1, the seal provided between the extension part 18 and the container wall 1 is By applying that amount of tension to the ring 28, the threaded sleeve 13 The outer surface of the opening 15 is sealed against the green of the opening 15.

The internal through-bore 11 of the threaded sleeve 13 is connected to the outer part of the hole leading to the outside of the container. It has an internal thread 14. Hole inner part of through hole 11 facing female thread 14 also has an internal thread 16, the diameter of which is smaller than the diameter of the thread 14, an N thread A threaded disc 31 screwed into the end of the container 16 connects the interior of the container with the threaded sleeve. An opening forming a through channel between the hole inner part 20 of the through hole 11 of the tube 13 It has a section 26.

The threaded disc 31 supports a valve spring 25 designed as a compression coil spring. , the sealing cone 24 of the check valve provided in the bore portion 20 is located within the area of the check valve. It presses against the valve seat formed by the annular shoulder 33 narrowing the through hole 11. reverse When the stop valve is in the closed position, the valve is located between the bore inner portion 20 and the annular shoulder 330 on the opposite side. The fluid passes between the hole outer part of the through hole 11 of the threaded sleeve 13 located at prevent

The outer part of the last-mentioned through hole 11 is provided with the above-mentioned female thread 14 along its entire length. No, the internal thread ends away from the annular shoulder 33. Adjacent to the annular shoulder 33 9 through holes 11 in the unthreaded part.

It is narrower than the female thread 14. The narrowed unthreaded hole portion is axially is displaceable and provided for mechanically controlling the sealing cone 24 of the check valve. It functions as a guide for the thrust piece. The thrust piece passes through the fluid A disk 35. having an opening 23 that can be and seal cone 24 It consists of a protrusion 37 extending towards the side and passing through an opening in the valve seat of the check valve.

The thrust piece consisting of the disk 35 and the protrusion 37 is 1. Freedom of hollow screw 9 installed in cooperation with the end. As mentioned earlier, the inner bore 7 is particularly suitable for connecting 9 through a laterally extending branch hole 39 in line with the central opening 41 of the part 5. Establish a fluid connection with the display tube 3. Hollow screw 9 is female thread 1 of threaded sleeve 13 4, the sealing ring 4 is located between the connecting part and the threaded sleeve. 7, the connecting part 5 is sealed against the threaded sleeve 13 and furthermore the hollow Sealed against the hollow screw 9 by an O-ring 48 working with the head of the screw 9. Ru. Further, the opening 41 of the connecting part 5 is formed by the lateral extension of the connecting part 5 having the opening 41. A seal ring 43 seals the inner wall of the display tube 3 installed on the long part. Ru.

The length of the hollow screw 9 is the length of the slug formed by the disc 35 with the protrusion 37. A screw that contacts the stop piece so that it fits into the narrowed hole that is guided inside. In the blank end portion, the hollow screw 9 is screwed into the sealing rings 28 and 47 and Once the O-ring 48 is securely sealed, the hollow screw 9 is inserted into the threaded sleeve 13. Dimensions are such that the intrusion moves the thrust piece in the direction of the seal cone 24. . When the hollow screw 9 is tightened, the protrusion 37 of the thrust piece forms a valve seat. Lift the valve cone 24 from the annular shoulder 33 that is located inside the through hole 11. Side end, inner hole 7 of hollow screw 9. and a continuous fluid connection of the opening 41 of the connecting part 5 Establish up to display tube 3. Turn the hollow screw 9 and remove it, and then remove the thrust piece. Upon mechanical release of the disc 35) with an exit 37.

The actuation of the valve spring 25 and/or the pretension inside the container causes the seal cone 24 to close to the valve seat. The check valve automatically switches to the closed position. can be replaced.

The length of the hollow screw 9 and the thickness of the seal ring 47 are determined from the outer sealing surface of the extension 18. to correspond to the length of the threaded sleeve 13 up to the annular shoulder 33 which functions as a valve seat. When the hollow screw 9 is screwed in, the hollow screw is inserted into the thrust piece (protruding Once the sealing is performed by mechanical action via a disc 35) having a section 37, When compressive force begins to accumulate in the seal ring 47 and O ring 48, the seal cone 2 4 should be lifted from the valve seat. Then, by screwing in the hollow screw 9, a seal ring is attached to complete the seal. When the ring 47 and the O-ring 48 are slightly compressed, the seal cone 24 opens. The corresponding lift length will only result in bone.

All features mentioned in the above description and features that are only apparent in the accompanying figures, even if Even if they are not particularly emphasized or listed in the claims, the nine patents 1 and 2 are illustrative of various aspects within the scope of the present invention.

Copy of Amendment 4' (translation) submission date (Patent Act Article G184-7, Paragraph 1) April 1999 26th of the month Yoshi, Commissioner of the Patent Office 1) Takeshi Moon Co0 invention name Screw connector J for attachment to container openings, patent applicant Name Flutic Fluid Technician Gerethe Giselshaft 21 Deputy Man 9th floor, Trade Building, 123 Higashimachi, Chuo-ku, Kobe @Juru Telephone: Kobe (Q78) 521- 8822g, catalog of attached nails Copy and translation of auxiliary equipment) 1 copy The scope of the claims (Auxiliary equipment submitted to the International Bureau on January 26, 1989) 1. A threaded connector that attaches to the inside of a container, especially a pipe fitting that is connected to a threaded connector. This is used to connect to the pipe fitting of the device that monitors the contents of the container, and has one hollow screw. The inner hole of the hollow thread passes through the aforementioned opening between the aforementioned interior and the aforementioned pipe fitting. forming at least a portion of the fluid connection passage extending to the It serves to secure the aforementioned hollow screw to the container wall, and also serves to connect the aforementioned fluid connection path. It has a threaded sleeve that is continuous with the interior of the aforementioned threaded sleeve, and has an interior penetration of the aforementioned threaded sleeve. The through hole has a female thread into which the aforementioned hollow screw can be screwed, and the aforementioned threaded The fluid path through the aforementioned through hole in the sleeve can be blocked by a check valve. .

The movable sealing body of the check valve is accessible from the outside of the container and is connected to the aforementioned screw. The rock of the actuating member is arranged to move along the aforementioned internal through hole of the attached sleeve. It can be moved to the open position by wave motion, and is similar to the above-mentioned hollow neck9). teeth.

The hollow screw is provided as an operating member of the check valve, and the hollow screw is provided as an operating member of the check valve. By mechanically acting on the sealing body of the hollow screw, the aforementioned threaded sleeve ( 13) When screwed in, the sealing body is opened by vertical movement of the hollow screw. Something that is characterized by being able to move from place to place.

2. The screw connector according to claim 1, wherein the aforementioned threaded sleeve (13) A sealing cone (24) axially displaceable within the aforementioned through-hole (11) of the aforementioned A patent characterized in that it is provided as a sealing body for a check valve. international search report international search report

Claims (4)

[Claims] 1. A screw connector that attaches to the opening of a container, making connections between the inside of the container and the screw connector. pipe fittings that are connected to the pipes, especially those that connect to pipe fittings of equipment that monitors the contents of containers. It has one hollow screw, and the inner hole of the hollow screw passes through the above-mentioned opening and connects with the above-mentioned inside. forming at least a portion of a fluid connection extending between said fittings; The male thread of the hollow screw plays the role of fixing the hollow screw mentioned above to the container wall. characterized in that it comprises a threaded sleeve (13) inserted into the aforementioned opening (15). However, the aforementioned threaded sleeve is attached to the aforementioned container wall (1) using its male thread (17). can be screwed in, thereby creating a seal on the edge of the aforementioned opening (15). Further, the aforementioned threaded sleeve (13) has an internal through hole (11) and a front The outer hole part on the outside of the aforementioned container can be screwed with the aforementioned hollow screw (9). It has an internal thread (14) that allows for 20) can be closed by a check valve seated in this hole. The movable sealing body of the above-mentioned check valve is attached to the above-mentioned threaded sleeve (13) with the above-mentioned hollow screw ( 9) can be moved to the open position by the mechanical action created by screwing the What can be done. 2. The threaded connector according to claim 1, wherein the threaded sleeve (13) is A sealing cone (24) that is axially displaceable within the aforementioned through hole (11) Provided as a sealing body for the check valve, the aforementioned sealing cone is provided in the area of the check valve. The valve seat and bullet formed by the current shoulder (33) that narrows the aforementioned through hole (11) so that it moves in the opposite direction of the screwing action of the hollow screw (9) mentioned above so as to make contact with each other. be pre-tensioned by the valve spring (25), and working together with the end of the aforementioned hollow screw (9) and protruding into the opening of the aforementioned valve seat. A movable thrust piece is provided to advance the screwing movement of the hollow screw (9) mentioned above. said seal cone (24) and said seal cone from said valve seat. Something that is characterized by lifting. 3. In the screw connector according to claim 2, the above-mentioned hollow screw (9) is It has an unthreaded area at the end opposite the thrust piece, and this unthreaded area is It tapers to the area with the external thread, and furthermore, during the screwing movement, the aforementioned extending inside the unthreaded hole portion of the aforementioned through hole (11) of the threaded sleeve (13); The aforementioned unthreaded hole portion is adjacent to and connected to the annular shoulder (33) forming the aforementioned valve seat. The above-mentioned thrust piece is installed inside the screwless hole so that it can be moved vertically. Something that is characterized by functioning as a guide. 4. In the threaded connector according to claim 3, the thrust piece is adapted to carry fluid. of a disc (35) with at least one opening (23) allowing passage; The aforementioned disc has an axially protruding protrusion (37); This protrusion extends into the opening of the aforementioned valve seat and is opposed to the aforementioned seal coat. characterized in that it cooperates with the surface of the horn (24).