KR20080001883U - Check valve for lubrication inlet hole of underground pipe - Google Patents

Abstract

An improved technique is provided for a check valve for underground buried pipe chemical inlet that is detachably mounted to a chemical inlet of a pipe embedded in the ground and functions as a check valve when injecting lubricant or backfill material.

The present invention is a check valve mounted on the chemical inlet of the underground buried pipe used in the propulsion pipe method, etc., the valve plate is provided with a plurality of valve wings foldable; A ring-shaped member having an inner diameter corresponding to the diameter of the valve plate so that the valve plate can be inserted into and connected to the upper surface of the valve plate, wherein a plurality of fastening holes are provided on the upper surface of the valve plate. It is formed so that a separate handle for fastening can be inserted and rotated inside said tightening hole, and there is a characteristic in its basic configuration.

According to the present invention, it is possible to insert and turn a separate tightening handle inside the tightening hole formed on the upper surface of the valve plate, so that the installation of the check valve by inserting it into the chemical inlet can be easily installed with little force. , In the installation of the check valve deep inside the narrow diameter injection hole can be expected to be able to perform the operation conveniently.

Description

Check valve for underground buried pipe for easy tightening installation {CHECK VALVE FOR LUBRICATION INLET HOLE OF UNDERGROUND PIPE}

1 is a view showing a conventional excavation check valve.

Figure 2 is an exploded perspective view showing the configuration of the check valve according to the present invention.

Figure 3 is a perspective view showing a state of assembling the check valve according to the present invention.

Figure 4 is a perspective view showing a state fitted with a tightening handle to the check valve according to the present invention.

 Explanation of symbols on the main parts of the drawings

10: valve plate 12: valve wing

13: folding groove 14: assemblyman

20: assembly fixture 22: support

24: assembly protrusion 30: tightening hole

100: tightening handle 110: valve holding part

111: horizontal arm 112: locking projection

120: handle portion 122: vertical rod

125: handle

The present invention relates to a check valve for underground buried pipe chemical inlet that is detachably mounted to the chemical inlet of a pipe buried in the ground and functions as a check valve when injecting lubricant or backfill material, and more specifically, the upper surface of the valve plate. A fastening hole is formed in the hole, and a separate fastening handle can be inserted and rotated inside the fastening hole so that the check valve can be easily installed with a small force in the installation by turning the check valve into the chemical inlet. The present invention relates to an improved underground buried pipe chemical inlet check valve for performing a convenient operation in installing a check valve deep inside.

In the case of laying underground infrastructure such as water / sewerage, electricity, communication lines, gas pipelines, etc., it was generally constructed by an open-type construction method in which pipes are installed on the ground. However, in the case of this open-type construction method, not only there are problems such as noise and dust, but there is also concern about ground subsidence in areas with high groundwater level or soft ground, and furthermore, when construction is performed in urban areas where traffic is complicated, It was a factor that greatly inconvenienced life.

Recently, in order to improve such a problem, a shield method for constructing an underground tunnel by an excavator without a ground excavation work has been developed and widely adopted. Among these shield methods, the propulsion pipe method (SEMI-Shield) is mainly adopted as a method for embedding small pipelines. The propulsion pipe method is to insert a steel cylindrical excavator called SEMI-Shield Machine into the vertical work area, and then While excavating the ground while rotating the excavation cutter head mounted on the ground, the propulsion pipe is pushed and pushed into the back of the SEMI-Shield machine using a hydraulic jack while preventing the collapse of the membrane surface by various auxiliary methods. It is a method of excavating a tunnel and embedding a pipe by repeating the installation of a propulsion pipe.

In this propulsion pipe method, when pushing a pipe (mainly a fume pipe) into a space excavated in the ground, considerable propulsion is required due to the frictional resistance between the pipe and the ground, and in order to reduce the propulsion force required for the hydraulic jack, At the side surface, the chemical inlet is provided to penetrate the tube, and the chemical inlet discharges various lubricants to the outside of the tube so that the lubricant enters between the tube and the ground so that the fume tube smoothly passes through the excavation surface. In addition, after the excavation work is completed, the backfill material made of cement mortar and waterproofing agent should be filled in the space between the outside of the tube and the ground to fill the external voids. Is done.

On the other hand, in the construction of the injection of the drug, such as using the drug inlet of the pipe as described above, after the drug is injected, the injected medicine is refluxed by earth pressure or groundwater pressure, or soil or groundwater is infiltrated into the pipe through the drug inlet. In order to prevent the pipeline from being blocked or contaminated due to such a backflow phenomenon, the chemical inlet is equipped with a check valve functioning as a check valve for preventing the flow of backflow.

Figure 1 shows an excavation check valve disclosed in the Republic of Korea Utility Model Registration No. 104639 as an example for the conventional check valve for underground propulsion pipe drug inlet used in the above-described drug inlet.

As shown in Fig. 1, the conventional excavation check valve includes a disc shaped check valve plate 8 having two semicircular valve blades 9 as a whole; The check valve plate 8 is fitted with a fixing fixture which is fixed to the assembly, the check valve plate 8 and the assembly fixing fixture 4 in the assembling assembly of the inner reinforcing piece (6) of the assembly fixture (4) Assembled projection (7) protruding in the) into the assembling hole (0) of the check valve plate and then the end of the assembly projection (7) to be fixed by thermal compression.

Here, when the conventional method for installing the excavation check valve to the socket (2) of the chemical inlet, as shown above, first assembled by connecting the check valve plate to the assembly fixing fixture (4), the operator The inner reinforcing piece 6 of the assembly fixture was held by hand and rotated against the inlet of the socket 2 so that the fitting installation could be made by screwing.

By the way, according to the conventional check valve, the thread of the socket 2 and the thread of the assembling fixture 4 do not coincide correctly or are rusted on the thread of the socket 2 in the insertion of the inside of the chemical inlet socket as described above. Or there may be a foreign matter such as soil, etc. In this case, when the assembly fixture is turned by hand, it does not turn well inside the socket, so it has to be forced to rotate with a lot of force, thereby reducing workability.

In addition, in the case of the drug inlet socket (2) is usually formed about 6cm in diameter, when the check valve is inserted into the inside of the socket by hand, the inner diameter of the socket is relatively very small than the size of the hand to deep into the socket When inserting the check valve, the operator's hand was caught in the socket inlet, and the work was very inconvenient, and there was a problem that the hand was swept off the corner of the socket.

Due to this inconvenience, in the actual work site, instead of turning the check valve into the socket and screwing it into the socket as described above, the installation is performed by putting the check valve on the socket inlet and squeezing it with a rubber mallet or the like for easy construction. There are many situations. However, in the case of installing the check valve with a hammer as described above, the check valve is frequently damaged by hitting, and the check valve is inserted into the socket in a crooked state even when the check valve is fitted inside the socket. There was a problem that the drug flows back into the gap between the assembly fixture or the soil is penetrated into the interior.

Therefore, the present invention is devised to solve the problems shown in the conventional check valve as described above, specifically, the present invention is formed with a tightening hole in the upper surface of the valve plate and inserts a separate tightening handle inside the tightening hole It is designed to be rotated so that the check valve can be easily installed with little force in the installation by turning the check valve into the chemical inlet. Also, it can be conveniently performed when installing the check valve deep inside the narrow diameter chemical inlet. The technical problem to be solved is to provide a check valve for buried pipe chemical inlet.

In order to achieve the above technical problem, the check valve for underground buried pipe chemical inlet for easy installation, which is provided by the present invention, has a large number of check valves installed at the chemical inlet for underground buried pipe used in the propulsion pipe method. A valve plate provided with two valve wings foldable; A ring-shaped member having an inner diameter corresponding to the diameter of the valve plate so that the valve plate can be inserted into and connected to the upper part of the valve plate, and including a plurality of fastening holes formed on the upper surface of the valve plate. There is a feature in the basic configuration that the additional tightening handle can be inserted and rotated inside the tightening hole.

At this time, the present invention as described above, the valve blade of the valve plate is formed by splitting one disc in the cross-section in the center and the cross-shaped support to support the valve blade when the valve plate is inserted inside the assembly fixture It can be preferably applied to the check valve of the type which is provided integrally.

In addition, in the present invention as described above, the outer side of the assembly fixture is formed integrally with the assembly protrusion protruding upward, the assembly protrusion may be configured to be thermally compressed after fitting into the assembly hole formed in the valve plate. .

On the other hand, the present invention is a tool used for tightening and fixing the check valve for underground buried pipe drug inlet as described above, the locking projection formed in the form of being inserted into the tightening hole of the check valve for underground buried pipe drug inlet of the present invention. A valve gripping portion having; The handle portion is integrally connected to one side of the valve gripping portion, the handle portion including a handle that can be turned and held by the operator; providing a check valve tightening handle for underground buried pipe drug injection inlet as another aspect of the present invention do.

According to the present invention, as described above, the tightening hole is formed on the upper surface of the check valve valve plate to install the check valve into the socket of the chemical inlet. Since the operator can grab and turn the tightening handle on the back, even if the check valve does not rotate well in the socket, the operator can effectively deliver the tightening force to the check valve, making it easy to install the check valve with little force. . In addition, according to the check valve provided in the present invention, since the tightening handle is mounted on the check valve, the inconvenience and hand-washing that may occur when turning by hand in installing the check valve deep inside the narrow diameter injection hole are provided. It is also possible to expect the effect of performing the check valve installation operation very conveniently without fear of injury.

Hereinafter, with reference to the accompanying drawings will be described an embodiment in which the technical concept of the present invention is preferably implemented, and through this will be described in more detail the configuration and operation of the present invention.

Figure 2 is an exploded perspective view showing the configuration of the check valve for underground buried pipe drug injection in accordance with the present invention, the check valve provided in the present invention as shown in Figure 2 as a whole, a ring-shaped assembly fixture formed with a thread on the outer peripheral surface 20 and a plurality of collapsible valve blades 12 are provided and are composed of a disk-shaped valve plate 10 inserted into the upper part of the assembly fixture 20, and particularly provided by the present invention. It can be seen that the check valve is formed by forming a plurality of tightening holes 30 on the upper surface of the valve plate (10).

In other words, the check valve provided in the present invention is provided with a valve wing 12 that can be folded as a whole, the valve plate 10 to enable the function of the check valve in the chemical inlet and the valve plate 10 is fixed In order to be able to be coupled to the drug inlet socket 100, the underground valve is composed of two parts (2-piece) of the assembly fixture 20, the check valve for the underground injection pipe drug injection inlet as the basic configuration, the valve plate 10 Since a plurality of tightening holes 30 are formed on the upper surface thereof, a separate tightening handle can be inserted and rotated inside the tightening hole 30, which is one of the main technical features distinguished from conventional check valves. have.

In the configuration of the present invention, the valve plate 10 as shown in the overall shape is made of a relatively thin disc shape and is of a size and shape that can be assembled on the upper part of the assembly fixture 20 to be described later. . The valve plate 10 is provided with a plurality of valve blades 12, the valve blade 12 is folded groove 13 so that it can be easily opened by the discharge pressure when injecting the medicine into the chemical inlet from the inside of the tube (13) It is comprised so that folding is possible on the axis.

In addition, according to the illustrated embodiment, in forming the valve blade 12 is divided into a cross (+) shape in the center of the valve plate 10 is configured to have four triangular valve blades (12) In addition, at the end of the cutting line of the valve blades 12, that is, at the periphery of the valve plate 10, a folding groove 13 is formed so that the valve blades 12 are folded and opened or closed around the folding groove 13. It is configured to be.

At this time, the configuration of the valve blades in the form as described above, if the pressure is configured to each of the four or more wing blades, but considering the size of the entire valve plate 10 can be practically difficult to manufacture In addition, as will be described later, the number of supports 22 of the assembly fixture 20 manufactured in a form corresponding to the shape of the valve wing is increased to comprehensively prevent the smooth discharge of the drug.

The shape of the valve blade 12 as described above is compared with that of the conventional general excavation check valves having two semi-circular valve blades folded about the center of the check valve plate 8 as shown in FIG. In the case of the present invention, four valve blades 12 are folded around the valve plate 10 by the shaft to open the center of the valve, which has a more efficient structure in opening and closing at the time of drug injection, and at the same time, the pressure received per valve wing. This reduction has the advantage that it can be easily opened by the drug discharge pressure and can be surely closed by external earth pressure or water pressure.

Next, the assembly fixture 20 is a ring-shaped member having an inner diameter corresponding to the diameter of the valve plate 10 so that the valve plate 10 can be fitted into the upper portion as shown in Figures 2 and 3 As the outer circumferential surface, a screw thread is formed to be screwed into the socket (not shown) of the chemical inlet, and the support 22 is provided across the inner side.

The support plate 22 of the assembly fixture 20 is formed in the cross shape of the same shape as the cutting line of the above-described valve plate 10 when the valve plate 10 is coupled to the top of the assembly fixture 20, the valve plate Assembly line (10) is assembled so that it can be located above the support (22). Therefore, when the valve blades 12 opened during injection of chemicals are restored to the original state by being pushed by an external pressure such as earth pressure from the outside of the pipe, the valve blades 12 are brought into close contact with the support 22 by the external pressure and thus the valve blades ( The gap between the 12) is sealed by the support 22 to prevent the groundwater or soil from the outside to enter the pipe through the drug inlet.

On the other hand, in the present invention, there may be a variety of ways in fitting the valve plate 10 to the assembly fixture 20 described above, the assembly protrusion 24 in the assembly fixture 20 in the illustrated embodiment Forming and using it to suggest a way to couple the valve plate 10 by thermocompression. That is, as shown in Figure 3, the outer side of the assembly fixture 20, the assembly protrusion 24 is formed to protrude upward, the valve plate 10 to form an assembly hole 14 in the corresponding position Inserting the assembling protrusions 24 of the assembling fixtures 20 into the assembling holes 14 of the valve plate 10, and then fixing the front ends of the assembling protrusions 24 protruding from the assembling holes 14. It was made possible.

Therefore, according to this embodiment, in the conventional check valve shown in Fig. 1, when the assembling hole (0) is located at the center of the valve, breakage such as cracking around the assembling hole (0) is caused when a hammer or the like is used for easy construction. Unlike the frequent occurrence, in the present invention, even if the assembling hole 14 is located at the valve periphery and hits with a hammer or the like, the direct hit is supported by the cross support 22 at the center of the assembling fixture 20 and the assembling worker 14 There is an advantage that can be effectively reduced the risk of breakage bar is not applied.

On the other hand, in the illustrated embodiment, in the coupling of the valve plate 10 and the assembly fixture 20 illustrates a method of thermocompression bonding the assembly protrusion 24, but is not necessarily limited to other methods, such as bolts It may also be applied without any particular limitation.

The check valve for the underground propulsion pipe drug injection hole of the present invention having the configuration as described above is mainly used to be mounted to the drug injection hole of the tube in the propulsion pipe method of the non-removable method, the check valve of the present invention The method of coupling to the socket also has the main features of the present invention, with reference to the accompanying Figure 4 will be described in more detail.

Figure 4 is a perspective view showing a method of installing a check valve for underground buried pipe drug inlet easy installation provided in the present invention, as can be seen from Figure 4, the check valve of the present invention In the case of installing the chemical inlet, a separate tightening handle 100 is inserted into the tightening hole 30 of the valve plate 10 and then the tightening handle 100 is rotated to the left or the right (not shown). It can be inserted into or removed from.

To this end, the valve plate 10 has a tightening hole 30 as described above, and in the illustrated embodiment, two tightening holes 30 are formed so as to face each other at an outer portion of the valve plate 10. An example of arrangement is given (in this case, the number of the tightening holes may be changed to three or more as necessary).

In addition, the tightening handle 100 is a tool used to tighten the check valve by mounting in the tightening hole 30 of the valve plate 10, the configuration is as shown in Figure 4, The valve gripping portion 110 having two locking protrusions 112 and one side of the valve gripping portion 110 may be integrally connected to be inserted into the tightening hole 30 of the check valve according to the present invention. It is configured to include a handle portion 120 including a handle 125 that can be.

In more detail, the valve gripping portion 110 has a predetermined length, that is, a locking protrusion of a shape inserted into the tightening hole at both ends of the horizontal arm 111 having a length corresponding to the distance between the tightening holes 30 ( 112 is formed to have an approximately 'c' shape, the horizontal arm 111 is a vertical rod 122 is connected to the central portion is configured, the end of the vertical rod 122 so that it can be held and turned by hand Handle 125 is made of a connected configuration.

Therefore, in installing the check valve of the present invention using the tightening handle 100 configured as described above, first, in a state in which the valve plate 10 is coupled to the assembly fixture, as shown in FIG. Insert the locking protrusion 112 of the tightening handle 100 into the tightening hole 30 of the valve plate 10, and then hold the handle 125 of the handle part 120 by hand to hold the assembly fixing tool 20. When rotated against the drug inlet socket (not shown), the check valve is firmly mounted inside the socket by a screw coupling between the assembly fixture 20 and the socket. On the other hand, the material of the tightening handle 100 as described above may be made of a metal, such as aluminum or stainless steel, or a material such as synthetic resin.

As such, according to the present invention, it is easy to apply a tightening force to the valve at the time of installation because it is possible to use a separate tightening handle instead of holding it by hand, as in the conventional check valve. In addition, even when the diameter of the drug inlet socket is small and deep, a fastening handle having a predetermined length is used, so that the hand may be injured by hand squeezing due to the hand being caught by the socket inlet corner during rotational tightening. It can effectively solve the problem of inconvenient work.

Although the present invention has been described in detail with reference to the described embodiments, those skilled in the art to which the present invention belongs will be capable of various substitutions, additions and modifications without departing from the technical spirit described above. As a matter of course, it should be understood that such modified embodiments also fall within the protection scope of the present invention defined by the utility model registration scope attached below.

According to the present invention described in detail above, a tightening hole is formed on the upper surface of the valve plate, and a separate tightening handle can be inserted and rotated inside the tightening hole, thereby reducing the installation of the check valve by turning it into the chemical inlet. Not only can be easily installed by force, but also can be conveniently performed in the installation of the check valve deep inside the narrow diameter injection hole, the present invention is to solve the problems in the conventional excavation check valve It is a very useful design that can be effectively solved.

Claims (4)

In the check valve attached to the chemical inlet of the underground buried pipe, A valve plate on which a plurality of valve blades are foldable; An assembly fixture having a thread formed on an outer circumferential surface thereof as a ring-shaped member having an inner diameter corresponding to the diameter of the valve plate so that the valve plate can be connected to the upper portion; Including; A fastening installation check valve for underground buried pipes, characterized in that the plurality of tightening holes are formed on the upper surface of the valve plate so that a separate tightening handle can be inserted and rotated inside the tightening hole. The valve blade of claim 1, wherein the valve blade of the valve plate is formed by dividing one disc into a cross shape at the center thereof, and a cross-shaped support is provided inside the assembly fixture so as to support the valve blade when the valve plate is inserted. Check valve for underground buried pipe drug injection inlet is easy to install, characterized in that provided integrally. The outer periphery of the assembly fixture is formed integrally with the assembling protrusions protruding upward, the assembling projections are characterized in that the assembly is configured to be thermally compressed after being fitted into the assembly hole formed in the valve plate. Easy-to-install underground buried check valve for chemical inlet. A tool used for tightening and fixing a check valve for underground buried pipe chemical inlet according to any one of claims 1 to 3, A valve gripping portion having a locking projection formed in the form of being inserted into a tightening hole of the check valve for underground buried pipe medicine inlet according to any one of claims 1 to 3; And a handle portion integrally connected to one side of the valve gripping portion, the handle portion including a handle which can be turned by a worker by hand.

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