One-way valve for deep hole and assembling and disassembling tool

Abstract

The one-way valve structurally comprises a supporting frame, a valve rod and a valve seat, the supporting frame is cylindrical, one end of the supporting frame is provided with an inner threaded hole, the other end of the supporting frame is provided with the valve seat, and the side face, close to the valve seat, of the supporting frame is provided with a flow channel window. The outer diameter of the part, in the valve seat, of the end of the valve rod is smaller than that of the part, in the guide groove, of the end of the valve rod. The assembling and disassembling tool comprises a push-pull rod and a threaded connector which are connected with each other, and external threads of the threaded connector are matched with internal threads of the internal threaded hole in shape. The one-way valve has the advantages that the structural design is reasonable, the one-way valve in the long and thin deep hole can be quickly assembled and disassembled, the one-way valve is reasonable in structure, the one-way valve can be effectively connected with the deep hole, and smooth on-off of fluid is guaranteed.

Description

Technical Field

[0001] The utility model relates to a one-way valve and a loading and unloading tool, in particular to a detachable one-way valve and a loading and unloading tool for an elongated deep hole. Background Art

[0002] In the prior art, for deep holes with smaller apertures (such as 0.5m deep), on the one hand, the installation is cumbersome, and on the other hand, the one-way valve is generally not removable after installation. Once damaged, the entire structure can only be replaced and disassembled, which results in high maintenance costs. Utility Model Content

[0003] The utility model provides a one-way valve for a deep hole and a loading and unloading tool, the purpose of which is to overcome the above-mentioned shortcomings of the prior art and facilitate the installation, disassembly and replacement of the one-way valve in the deep hole.

[0004] The technical solution of the utility model is: a one-way valve for deep holes, which includes a support frame, a valve stem and a valve seat, wherein the support frame is cylindrical, one end of the support frame is an internal threaded hole, and the other end is equipped with a valve seat, a flow channel window is opened on the side of the support frame near the valve seat, the outer diameter of the part of the valve stem end in the valve seat is smaller than the part in the guide groove, and a reset spring is installed on the valve stem. Under the action of pressure, the valve stem moves, the one-way valve opens, and the fluid flows through the support frame flow channel window and flows downstream. When the pressure is removed, the valve stem moves under the action of the reset spring, and the one-way valve closes. The internal threaded hole is used to connect with the loading and unloading tools.

[0005] Preferably, an axial guide hole is formed inside the support frame at one end of the flow channel window near the internal threaded hole, an axial guide groove is formed inside the support frame at one end of the flow channel window near the valve seat, one end of the valve stem is slidably connected in the guide hole, and the other end is slidably connected in the guide groove, and a return spring is installed on the valve stem between the guide hole and the guide groove. The double guide structure used in the movement of the valve stem can prevent the valve stem from deflecting or getting stuck during movement.

[0006] Preferably, a first sealing ring is provided on the outer side of the valve seat, and a second sealing ring is provided between the outer side of the other end of the valve stem and the valve seat. The first sealing ring seals the valve seat and the side wall of the slender deep hole to ensure fluid sealing. Under the action of the return spring, the valve stem of the one-way valve moves, and the one-way valve can be in a closed state under the sealing of the second sealing ring.

[0007] A one-way valve assembly and disassembly tool for deep holes, the structure of which includes a push-pull rod and a threaded joint connected to each other, the external thread of the threaded joint matches the internal thread of the internal threaded hole. The one-way valve is installed at the bottom of the elongated deep hole using the one-way valve assembly and disassembly tool for deep holes, specifically, the one-way valve is first threadedly connected to the internal threaded hole through the threaded joint, and then the one-way valve is pushed into the bottom of the elongated deep hole through the push-pull rod, and then the threaded joint and the internal threaded hole are unscrewed, and the assembly and disassembly tool is removed to complete the installation of the one-way valve. When the one-way valve is removed from the bottom of the elongated deep hole, the opposite operation can be performed.

[0008] The utility model has the advantages that the structure is reasonably designed, and the one-way valve in the slender deep hole can be quickly installed and removed. The one-way valve has a reasonable structure and can be effectively connected with the deep hole, and the smooth flow and interruption of the fluid can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of a one-way valve for deep holes of the utility model.

[0010] Figure 2 The utility model is a structural schematic diagram of a one-way valve loading and unloading tool for deep holes.

[0011] Figure 3 The utility model is a schematic diagram of the working state of the one-way valve for deep holes and the loading and unloading tool.

[0012] In the figure, 1 is a support frame, 11 is a guide groove, 12 is a guide hole, 13 is a flow channel window, 14 is an internal threaded hole, 2 is a valve stem, 3 is a valve seat, 31 is a first sealing ring, 32 is a second sealing ring, 4 is an elongated deep hole, 51 is a push-pull rod, and 52 is a threaded joint. DETAILED DESCRIPTION

[0013] The utility model is further described in detail below in conjunction with embodiments and specific implementation methods.

[0014] like Figure 1 As shown, a one-way valve for deep holes comprises a support frame 1, a valve stem 2 and a valve seat 3, wherein the support frame 1 is cylindrical, one end of the support frame 1 is an internal threaded hole 14, and the other end is provided with a valve seat 3, a first sealing ring 31 is provided on the outer side of the valve seat 3, a flow channel window 13 is opened on the side of the support frame 1 near the valve seat 3, an axial guide hole 12 is formed on the inner side of the support frame 1 at one end of the flow channel window 13 near the internal threaded hole 14, an axial guide groove 11 is formed on the inner side of the support frame 1 at one end of the flow channel window 13 near the valve seat 3, one end of the valve stem 2 is slidably connected in the guide hole 12, and the other end is slidably connected in the guide groove 11, a second sealing ring 32 is provided between the outer side of the other end of the valve stem 2 and the valve seat 3, the outer diameter of the part of the other end of the valve stem 2 in the valve seat 3 is smaller than the part in the guide groove 11, and a return spring (not shown) is provided on the valve stem 2 between the guide hole 12 and the guide groove 11.

[0015] During operation, the valve seat 3 is sealed with the side wall of the elongated deep hole 4 by the first sealing ring 31 to ensure fluid sealing. When the one-way valve is under pressure, the valve stem 2 moves, the one-way valve opens, and the fluid flows through the flow channel window 13 of the support frame 1 and flows downstream. When the pressure is removed, the one-way valve moves the valve stem 2 under the action of the return spring, and the one-way valve is in a closed state under the sealing of the second sealing ring 32. The valve stem 2 adopts a double guide structure (guide groove 11, guide hole 12) during the movement process, which can prevent the valve stem 2 from deflecting and getting stuck during the movement process.

[0016] like Figure 2 As shown, a one-way valve loading and unloading tool for deep holes includes a push-pull rod 51 and a threaded joint 52 connected to each other, and the external thread of the threaded joint 52 matches the internal thread shape of the internal thread hole 14.

[0017] like Figure 3 As shown, the one-way valve is installed at the bottom of the elongated deep hole 4 using a one-way valve loading and unloading tool for deep holes. Specifically, the one-way valve is first threadedly connected to the internal threaded hole 14 through the threaded connector 52, and then the one-way valve is pushed into the bottom of the elongated deep hole 4 through the push-pull rod 51. Then, the threaded connector 52 and the internal threaded hole 14 are unscrewed, and the loading and unloading tool is removed to complete the installation of the one-way valve. When the one-way valve is taken out from the bottom of the elongated deep hole 4, the opposite operation can be performed. This is conducive to the installation and disassembly of the one-way valve during production and after-sales. The above-mentioned components are all prior art, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A one-way valve for deep holes, characterized in that: The valve comprises a support frame (1), a valve stem (2) and a valve seat (3), wherein the support frame (1) is cylindrical, one end of the support frame (1) is an internal threaded hole (14), and the other end is provided with the valve seat (3), a flow channel window (13) is provided on the side of the support frame (1) near the valve seat (3), the outer diameter of the portion of the end of the valve stem (2) inside the valve seat (3) is smaller than the outer diameter of the portion inside the guide groove (11), and a return spring is provided on the valve stem (2).

2. A one-way valve for deep holes as claimed in claim 1, characterized in that: An axial guide hole (12) is formed on the inner side of the support frame (1) at one end of the flow channel window (13) close to the internal threaded hole (14), and an axial guide groove (11) is formed on the inner side of the support frame (1) at one end of the flow channel window (13) close to the valve seat (3). One end of the valve stem (2) is slidably connected in the guide hole (12) and the other end is slidably connected in the guide groove (11), and a return spring is installed on the valve stem (2) between the guide hole (12) and the guide groove (11).

3. A one-way valve for deep holes as claimed in claim 1, characterized in that: A first sealing ring (31) is provided on the outer side of the valve seat (3), and a second sealing ring (32) is provided between the outer side of the other end of the valve stem (2) and the valve seat (3).

4. A one-way valve loading and unloading tool for deep holes, characterized in that: It comprises a push-pull rod (51) and a threaded joint (52) connected to each other, wherein the external thread of the threaded joint (52) matches the internal thread shape of the internal thread hole (14) of the one-way valve for deep holes as claimed in any one of claims 1 to 3.

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