Socket type sealing joint for inserting drill rod

Abstract

The utility model discloses a socket type sealing joint for inserting a drill rod. The socket type sealing joint consists of a sealing joint and a rubber ring, the sealing joint is provided with an inserting end, a screwing end, a hexagonal head and a drainage surface; threads are arranged on the surface of the screwing end; the plugging end is provided with three arc-shaped grooves. And the rubber ring can be sleeved in the three arc-shaped grooves at the plugging end of the sealing joint. After the screwing end and the inserting end of the sealing connector are inserted into the drill rod male head and the drill rod female head respectively, the sealing connector limits shrinkage of a center hole of the sealing gasket, and the circulation amount of the drill rod at the connector is protected; meanwhile, the drill rod male head and the drill rod female head are in deep connection through the sealing joint, and the sealing performance of the drill rod joint is further improved through the plugging effect of the rubber rings located in the three arc-shaped grooves in the inserting end; and meanwhile, the inclined annular drainage surface positioned at the end part of the screwing end of the sealing joint can play a role in guiding flow, so that high-pressure fluid cannot be blocked by the section of the end part of the sealing joint when flowing through the sealing joint.

Description

Technical Field

[0001] The utility model relates to the technical field of a drill rod connection structure applied to a high-pressure rotary jet pile driver, in particular to a spigot-and-socket sealing joint for plugging a drill rod. Background Art

[0002] At present, high-pressure jet grouting piles are widely used in the field of engineering construction. The drill rods of the high-pressure jet grouting pile machine are generally connected through the male and female drill rods. The male drill rod is inserted into the female drill rod, and a ring-shaped sealing gasket with a flow hole in the center is inserted into the joint between the male and female drill rods for sealing. The high-pressure slurry flows from the male drill rod to the female drill rod through the flow hole. However, when the drill rod works vertically, it generally has a large pressure, which will cause the sealing gasket to be compressed, and then the flow hole in the center is compressed, the flow area is reduced, and the normal operation of the high-pressure jet grouting pile machine is affected. At the same time, in actual construction, although the joint between the male and female heads has a sealing gasket, it is still a weak point that is prone to high-pressure slurry seepage. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provide a spigot-and-socket sealing joint for plugging drill pipes.

[0004] The utility model provides a spigot-and-socket sealing joint for inserting a drill pipe, comprising a sealing joint and a rubber ring. The utility model is characterized in that the sealing joint is provided with a plug-in end, a screw-on end, a hexagonal head and a drainage surface.

[0005] On the basis of the above, the surface of the screw-on end is provided with threads, and a hexagonal socket wrench can be used to screw the sealing joint into the male head of the drill pipe through the hexagonal head.

[0006] On the basis of the above, the surface of the plug-in end is provided with three arc-shaped grooves, and the rubber ring matches the three arc-shaped grooves on the surface of the plug-in end and can be inserted into the grooves.

[0007] On the basis of the above, the drainage surface is an inclined ring and is arranged at the end of the screwing end of the sealing joint.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] The utility model provides a spigot-and-socket sealing joint for plugging in drill pipes. Through the threads and hexagonal heads provided on the surface of the screwing end, the sealing joint can be screwed into the male head of the drill pipe using a hexagonal socket wrench, which has the characteristics of easy installation; by inserting the two ends of the spigot-and-socket sealing joint into the male head of the drill pipe and the female head of the drill pipe respectively, the compression of the central hole of the sealing gasket at the joint between the male head of the drill pipe and the female head of the drill pipe can be limited, thereby protecting the slurry flow at the connection of the drill pipe; at the same time, under the sealing effect of the rubber ring installed in the arc-shaped groove at the plug-in end of the sealing joint, the sealing performance of the connection of the drill pipe is further improved; at the same time, the inclined annular drainage surface at the end of the screwing end of the sealing joint can play a diversion role, so that the high-pressure fluid will not be blocked by the cross section of the end of the sealing joint when flowing through the sealing joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0011] Figure 1 , Figure 2 This is a schematic structural diagram of a spigot-and-socket sealing joint for inserting a drill pipe according to the utility model;

[0012] Figure 3 This is a schematic diagram of the installation of a spigot-and-socket sealing joint for inserting a drill pipe according to the utility model;

[0013] Description of Figure Numbers:

[0014] Sealing joint 1, rubber ring 2, drainage surface 101, screwing end 102, hexagonal head 103, plug-in end 104, drill pipe male head 3, drill pipe female head 4, annular sealing ring 5.

[0015] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] Reference Figure 1 , Figure 2 , Figure 3 The utility model comprises a sealing joint 1 and a rubber ring 2. The sealing joint is provided with a drainage surface 101, a screw connection end 102, a hexagonal head 103, and a plug connection end 104.

[0019] Reference Figure 1 , Figure 2 The structure of the first embodiment of the present invention is as follows:

[0020] It consists of a sealing joint 1 and a rubber ring 2. The sealing joint 1 is provided with a drainage surface 101, a screw connection end 102, a hexagonal head 103, and a plug connection end 104; the drainage surface 101 is an inclined ring; the screw connection end 102 is provided with threads; the plug connection end 104 is provided with three arc-shaped grooves; the rubber ring 2 is annular and matches the three arc-shaped grooves.

[0021] Reference Figure 1 , Figure 2 , Figure 3 The installation method of the first embodiment of the utility model is as follows:

[0022] Insert the three rubber rings 2 into the three arc-shaped grooves of the plug-in end 104 of the sealing joint;

[0023] Use a hexagonal socket wrench to screw the screw-on end 102 of the sealing joint into the drill pipe male head 3;

[0024] Insert the annular sealing gasket 5 into the drill pipe female head 4;

[0025] Insert the drill pipe male head 3 into the drill pipe female head 4, and the plug end 104 of the sealing joint passes through the central flow hole of the annular sealing gasket 5 and is inserted into the flow pipe of the drill pipe female head 4 located at the rear of the sealing gasket.

[0026] At this time, the sealing joint limits the reduction of the center hole of the sealing gasket, protects the flow rate of the drill pipe at the joint, and at the same time, the deep connection between the drill pipe male head and the drill pipe female head through the sealing joint, as well as the sealing effect of the rubber ring in the three arc-shaped grooves at the plug-in end, further improves the sealing performance at the drill pipe joint; at the same time, the inclined annular drainage surface at the screwing end of the sealing joint can play a diversion role, so that the high-pressure fluid will not be blocked by the cross-section of the end of the sealing joint when flowing through the sealing joint.

Claims

1. A socket-type sealing joint for inserting a drill pipe, characterized in that: It comprises a sealing joint and a rubber ring; the sealing joint is provided with a plug-in end, a screw-on end, a hexagonal head and a drainage surface; the screw-on end surface is provided with a thread, and a hexagonal socket wrench can be used to screw the sealing joint into the male head of the drill pipe through the hexagonal head; the plug-in end surface is provided with three arc-shaped grooves, and the rubber ring matches the three arc-shaped grooves on the plug-in end surface and can be inserted into the grooves.

2. A spigot-and-socket sealing joint for inserting a drill pipe as claimed in claim 1, characterized in that: The drainage surface is an inclined ring and is arranged at the end of the screw connection end of the sealing joint.

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