Water inlet and outlet valve of metering pump for oil field

Abstract

The utility model discloses a metering pump water inlet and drain valve for an oil field, which comprises a shell, a one-way control mechanism for controlling the flow direction of liquid is arranged in the shell, the one-way control mechanism comprises a sealing ring, a sealing ball, a through groove and a limiting ring, the sealing ring is fixedly arranged on one side in the shell, and the sealing ball is fixedly arranged on the other side in the shell. A sealing ball is movably arranged at the position, on one side of the sealing ring, in the shell in a clamped mode, through grooves are formed in the positions, on the periphery of the sealing ball, of the side wall of the inner side of the shell, and a limiting ring is fixedly arranged at the position, on one side of the sealing ball, in the shell. The ball valve is good in using effect, the sealing balls are convenient to disassemble, and therefore after the sealing balls of the whole valve body are damaged, the whole valve body does not need to be replaced or troublesome disassembly is not needed, and the using effect of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water inlet and outlet valves, in particular to a water inlet and outlet valve for a metering pump used in an oil field. Background Art

[0002] When a metering pump is in use, an inlet and outlet valve will be installed. The essence of the inlet and outlet valve is a one-way valve to ensure the reliability of the metering pump when in use. The principle is that a movable ball is set inside to control the flow direction of the fluid.

[0003] However, the design of the internal ball and flow channel of this type of inlet and outlet valve in the prior art makes it difficult to replace the ball. The oil field is used in a complex environment, and the metering pump may be used to transport various liquids. Once the internal ball is damaged, the entire valve body needs to be replaced or it is troublesome to replace the internal ball. Therefore, to address this problem, an improved inlet and outlet valve for a metering pump for an oil field is needed. Utility Model Content

[0004] The utility model aims to provide an oilfield metering pump inlet and outlet valve to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metering pump inlet and outlet valve for oil fields, comprising a shell, a one-way control mechanism for controlling the flow direction of the liquid is arranged inside the shell, the one-way control mechanism comprises a sealing ring, a sealing ball, a through groove, and a limit ring, a sealing ring is fixedly arranged on one side of the shell, a sealing ball is movably arranged on one side of the sealing ring inside the shell, through grooves are opened around the sealing ball on the inner side wall of the shell, and a limit ring is fixedly arranged on one side of the sealing ball inside the shell.

[0006] Preferably, a connecting ring is fixedly provided on one side of the shell surface, and a connecting pipe is provided inside the connecting ring. The connecting ring can be used to conveniently connect the shell to the outside of the connecting pipe or other pipelines.

[0007] Preferably, the inner side wall of the connecting ring is provided with threads, and the connecting pipe is connected to the connecting ring by screwing the threads together, and the connecting pipe and the connecting ring can be conveniently fixed together by the threads.

[0008] Preferably, an extrusion ring is provided between the connecting tube and the shell, and a plurality of connecting rods are evenly and fixedly provided on the outer surface of the extrusion ring. The end of the connecting rod away from the extrusion ring is fixedly connected to the limiting ring. After the connecting tube is fixedly connected to the connecting ring through a thread, the extrusion ring can be squeezed, thereby playing a role in fixing the extrusion ring. The extrusion ring is fixedly connected to the limiting ring through the connecting rod, thereby playing a role in fixing the limiting ring. When the sealing ball needs to be removed, the connecting tube is removed through the thread, and then the extrusion ring embedded in the shell and the connecting ring is clamped out together with the limiting ring by a magnet or a clip, and the sealing ball can be taken out. The whole process is convenient and quick, and the sealing ball can be easily replaced.

[0009] Preferably, a connecting flange is fixedly provided at one end of the shell away from the connecting pipe, and the shell can be conveniently connected to the inlet and outlet of the metering pump through the connecting flange.

[0010] Preferably, the outer surface of the shell is provided with a mark, through which the flow direction of the liquid can be indicated.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When the ball needs to be replaced, the utility model only needs to remove the connecting pipe through the thread, and then use the magnet or the clamp to clamp out the extrusion ring embedded in the shell and the connecting ring together with the limit ring, and the sealing ball can be taken out. The whole process is quick and convenient, and the sealing ball can be easily replaced.

[0013] When installing a new sealing ball, the utility model only requires the new sealing ball to be placed in, and then the extrusion ring part is placed in and finally connected with the connecting ring to complete the assembly. The assembly of the device is also convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an oilfield metering pump inlet and outlet valve of the utility model;

[0015] Figure 2 This is a cross-sectional view of an oilfield metering pump inlet and outlet valve of the utility model;

[0016] Figure 3 The utility model is an exploded view of an oil field metering pump inlet and outlet valve.

[0017] In the figure: 1. Shell; 2. Sealing ring; 3. Sealing ball; 4. Through groove; 5. Limiting ring; 6. Connecting ring; 7. Connecting pipe; 8. Thread; 9. Extrusion ring; 10. Connecting rod; 11. Connecting flange; 12. Mark. DETAILED DESCRIPTION

[0018] 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 in 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.

[0019] See also Figure 1-3 The utility model provides a technical solution: a metering pump inlet and outlet valve for oil fields, comprising a shell 1, a one-way control mechanism for controlling the flow direction of liquid is arranged inside the shell 1, the one-way control mechanism comprises a sealing ring 2, a sealing ball 3, a through groove 4, and a limit ring 5, a sealing ring 2 is fixedly arranged on one side of the shell 1, a sealing ball 3 is movably engaged with one side of the sealing ring 2 inside the shell 1, through grooves 4 are opened around the sealing ball 3 on the inner side wall of the shell 1, and a limit ring 5 is fixedly arranged on one side of the sealing ball 3 inside the shell 1.

[0020] A connecting ring 6 is fixedly provided on one side of the surface of the shell 1, and a connecting pipe 7 is provided inside the connecting ring 6. The connecting ring 6 can be used to conveniently connect the shell 1 to other pipes such as the pipe 7 outside the shell 1; a thread 8 is provided on the inner side wall of the connecting ring 6, and the connecting pipe 7 is connected to the connecting ring 6 by screwing the thread 8, and the connecting pipe 7 and the connecting ring 6 can be conveniently fixed together by the thread 8; an extrusion ring 9 is provided between the connecting pipe 7 and the shell 1, and a plurality of connecting rods 10 are evenly fixedly provided on the outer surface of the extrusion ring 9, and the end of the connecting rod 10 away from the extrusion ring 9 is fixedly connected to the limit ring 5, and after the connecting pipe 7 is fixedly connected to the connecting ring 6 by the thread 8, the extrusion ring 9 can be squeezed, thereby playing a fixing role. The extrusion ring 9 plays the role of fixing the limiting ring 5 through the connecting rod 10. When the sealing ball 3 needs to be removed, the connecting pipe 7 is removed through the thread 8, and then the extrusion ring 9 embedded in the shell 1 and the connecting ring 6 is clamped out together with the limiting ring 5 by a magnet or a clip, and the sealing ball 3 can be taken out. The whole process is convenient and fast, and the sealing ball 3 is convenient to replace; the shell 1 is fixedly provided with a connecting flange 11 at one end away from the connecting pipe 7, and the shell 1 can be conveniently connected to the inlet and outlet of the metering pump through the connecting flange 11; the outer surface of the shell 1 is provided with a mark 12, and the flow direction of the liquid can be indicated by the mark 12.

[0021] Working principle: when using the device, water can be introduced through the end of the shell 1 away from the connecting pipe 7, so that the liquid can push the sealing ball 3, so that the sealing ball 3 is staggered with the sealing ring 2 and contacts with the limit ring 5, and then the liquid can flow to the connecting pipe 7 through the through groove 4. On the contrary, when the liquid wants to flow in the opposite direction, it can push the ball, so that the ball can be tightly fitted on the outer surface of the sealing ring 2 to seal, thereby playing a role in the direction of liquid flow; and when the ball needs to be replaced with the use of the device, it is only necessary to disassemble the connecting pipe 7 through the thread 8, and then use a magnet or a clip to clamp the extrusion ring 9 embedded in the shell 1 and the connecting ring 6 together with the limit ring 5, and the sealing ball 3 can be taken out. The whole process is convenient and fast, and it is convenient to replace the sealing ball 3. When installing a new sealing ball 3, put the new sealing ball 3 in, then put in the extrusion ring 9 part and finally connect the connecting ring 6 to complete the assembly. The assembly of such a device is also convenient and fast. This is the working principle of a metering pump water inlet and outlet valve for oil fields of the utility model.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oilfield metering pump inlet and outlet valve, comprising a housing (1), characterized in that: A one-way control mechanism for controlling the flow direction of liquid is arranged inside the shell (1), and the one-way control mechanism comprises a sealing ring (2), a sealing ball (3), a through groove (4), and a limit ring (5). The sealing ring (2) is fixedly arranged on one side of the shell (1), and a sealing ball (3) is movably arranged on one side of the sealing ring (2) inside the shell (1). The inner side wall of the shell (1) is provided with through grooves (4) around the sealing ball (3), and the limit ring (5) is fixedly arranged on one side of the sealing ball (3) inside the shell (1). A connecting ring (6) is fixedly provided on one side of the surface of the shell (1), a connecting pipe (7) is provided inside the connecting ring (6), a thread (8) is provided on the inner side wall of the connecting ring (6), the connecting pipe (7) is connected to the connecting ring (6) by screwing the thread (8), an extrusion ring (9) is provided between the connecting pipe (7) and the shell (1), a plurality of connecting rods (10) are evenly fixedly provided on the outer surface of the extrusion ring (9), and one end of the connecting rod (10) away from the extrusion ring (9) is fixedly connected to the limiting ring (5).

2. The inlet and outlet valve of a metering pump for oil fields according to claim 1, characterized in that: A connecting flange (11) is fixedly provided at one end of the housing (1) away from the connecting pipe (7).

3. The inlet and outlet valve of a metering pump for oil field according to claim 1, characterized in that: The outer surface of the shell (1) is provided with a mark (12).

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