Buffer device of emulsion pump station

Abstract

The utility model relates to the technical field of emulsion pump unloading, in particular to a buffering device of an emulsion pump station, which comprises a shell connected with a liquid return steel pipe, a blocking piece is arranged in the shell in a sliding mode, a clamping groove corresponding to the blocking piece is arranged on the inner wall of the shell, the blocking piece is arranged on one side of a one-way valve, the blocking piece is of a conical structure, and the blocking piece is arranged on the other side of the one-way valve. A ball body is fixedly installed in the center of the blocking piece, and a buffering piece is arranged on the other side of the shell. When the unloading valve unloads returned liquid, local low pressure or vacuum phenomenon may occur temporarily in the liquid return steel pipe, at the moment, the one-way valve is opened to balance pressure, the liquid return steel pipe is connected with the shell, and when the oil returns, the buffer piece conducts buffering and drives the blocking piece to move towards the one-way valve in the moving process until the ball body of the blocking piece makes contact with the one-way valve. The problem that due to the fact that liquid return impact is too large, the one-way valve is clamped or the spring loses efficacy is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsion pump unloading, in particular to a buffer device of an emulsion pump station. Background Art

[0002] The emulsion pump is an important equipment in underground coal mine production. When the emulsion pump is working, it draws liquid from the liquid tank through the suction pipe, and after being pressurized by the emulsion pump, it is input into the hydraulic support as a power source. When the hydraulic support is not moving, the emulsion pump unloads through the unloading pipeline and is connected to the return liquid steel pipe. The unloading pipeline is also equipped with an unloading return liquid buffer, which is a key component for controlling pressure shock and oil reflux when the actuator stops or reverses.

[0003] In the prior art, the patent with announcement number CN201902389U discloses a hydraulic oil return buffer, which includes a cylinder body, a piston and a spring arranged in the cylinder body. An oil inlet is provided at one end of the cylinder body, and the piston is located between the oil inlet and the spring. A guide rod is fixed on the piston, and one end of the spring is sleeved on the guide rod. In order to reduce the vibration when the guide rod contacts the cylinder body, a shock-absorbing pad is provided on the end of the guide rod away from the piston.

[0004] The above structure can effectively reduce the instantaneous oil return impact, but during the oil return process, the return impact is too large, causing the one-way valve to become stuck or the spring to fail. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a buffer device for an emulsion pump station to solve the problem that during the oil return process, the return liquid impact is too large, resulting in the one-way valve being stuck or the spring failing.

[0006] Based on the above purpose, the utility model provides a buffer device for an emulsion pump station, comprising a housing connected to a liquid return steel pipe, a large nut being threadedly connected to one end of the housing, an air filter being fixedly mounted on one side of the large nut, a filter connector being fixedly connected to the output end of the air filter, the filter connector passing through the center of the large nut, and an extended end of the filter connector being inserted into the interior of the housing, and a one-way valve being provided at the end of the filter connector;

[0007] A baffle is slidably installed inside the shell, and a slot corresponding to the baffle is opened on the inner wall of the shell. The baffle is located on one side of the one-way valve, the baffle is a conical structure, and a sphere is fixedly installed at the center of the baffle. A buffer is provided on the other side of the shell.

[0008] Preferably, the baffle is an elastic structural component, and the diameter of the baffle is larger than the diameter of the inner wall of the shell.

[0009] Preferably, the buffer member includes a moving block slidably mounted on the inner wall of the shell, a buffer pad is provided on one side of the moving block, and the other side of the moving block is movably connected to the ball, and a spring is fixedly connected between the buffer pad and the moving block, one end of the spring is connected to one side of the buffer pad, and the other end of the spring is connected to one side of the moving block.

[0010] Preferably, a concave hole for accommodating the ball is opened on one side of the one-way valve.

[0011] Preferably, a first sealing ring and a second sealing ring corresponding to the filter joint and the housing are respectively installed on both sides of the large nut, and a second sealing ring is installed at the end of the housing.

[0012] Preferably, the diameter of the moving block matches the diameter of the inner wall of the housing, and the moving block and the blocking piece are arranged parallel to each other.

[0013] Beneficial effects of the utility model:

[0014] When the unloading valve unloads the return liquid, a local low pressure or vacuum may appear briefly in the return liquid steel pipe. At this time, the one-way valve opens to balance the pressure, and the return liquid steel pipe is connected to the housing. When the oil returns, the buffer performs buffering. At the same time, the buffer moves and drives the baffle toward the one-way valve until the ball of the baffle contacts the one-way valve, and the outer tail of the baffle is stuck in the card slot to block it, solving the problem of excessive return liquid impact causing the one-way valve to get stuck or the spring to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model as a whole;

[0018] Figure 3 This is a schematic diagram of the motion state structure of the baffle of the utility model.

[0019] The parts marked in the figure are: 1. Air filter; 2. Filter connector; 3. First sealing ring; 4. Large nut; 5. Second sealing ring; 6. One-way valve; 7. Housing; 8. Baffle; 9. Concave hole; 10. Ball; 11. Moving block; 12. Spring; 13. Buffer pad; 14. Slot. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, a buffer device for an emulsion pump station includes a housing 7 connected to a liquid return steel pipe, a large nut 4 being threadedly connected to one end of the housing 7, an air filter 1 being fixedly mounted on one side of the large nut 4, a filter connector 2 being fixedly connected to the output end of the air filter 1, the filter connector 2 passing through the center of the large nut 4, and the extended end of the filter connector 2 being inserted into the interior of the housing 7, and a one-way valve 6 being provided at the end of the filter connector 2;

[0022] A baffle 8 is slidably installed inside the shell 7, and a slot 14 corresponding to the baffle 8 is opened on the inner wall of the shell 7. The baffle 8 is located on one side of the one-way valve 6. The baffle 8 is a conical structure, and a ball 10 is fixedly installed at the center of the baffle 8. A buffer is provided on the other side of the shell 7.

[0023] In this embodiment, one end of the shell 7 is installed on the unloading return liquid steel pipe. When the unloading valve unloads and returns the liquid, the return liquid steel pipe is connected to the shell 7. When the oil returns, the buffer part performs buffering. At the same time, the buffer part drives the baffle 8 toward the one-way valve 6 during movement until the ball 10 of the baffle 8 contacts the one-way valve 6, and the outer tail of the baffle 8 is stuck in the card groove 14 to block it, thereby solving the problem that the one-way valve 6 is stuck or the spring 12 fails due to excessive impact of the return liquid.

[0024] As an implementation method, Figure 1 、 Figure 2 As shown, the baffle 8 is an elastic structural component, and the diameter of the baffle 8 is larger than the inner wall diameter of the housing 7 .

[0025] In this embodiment, the elastic material of the baffle 8 is utilized to be ductile in the housing 7 and to be combined with the clamping groove 14 to protect the one-way valve 6 and prevent the one-way valve 6 from being stuck due to the impact of the backflow liquid.

[0026] As an implementation method, Figure 2 and Figure 3 As shown, the buffer member includes a moving block 11 slidably mounted on the inner wall of the shell 7, a buffer pad 13 is provided on one side of the moving block 11, and the other side of the moving block 11 is movably connected to the sphere 10, and a spring 12 is fixedly connected between the buffer pad 13 and the moving block 11, one end of the spring 12 is connected to one side of the buffer pad 13, and the other end of the spring 12 is connected to one side of the moving block 11.

[0027] In this embodiment, when the unloading valve unloads and returns the liquid, the return liquid steel pipe is connected to the shell 7. When the oil returns, the oil impact pushes the buffer pad 13 to compress the spring 12. Under the action of pressure, after the buffer pad 13 completes compression, it stores the hydraulic energy and spring energy, and then drives the moving block 11 to move inside the shell 7 until it contacts the one-way valve 6.

[0028] As an implementation method, Figure 2 As shown, a concave hole 9 for accommodating a ball 10 is provided on one side of the one-way valve 6 .

[0029] In this embodiment, when the oil returns, the moving block 11 continues to move, and during the movement, it drives the baffle 8 to move toward the one-way valve 6 until the ball 10 of the baffle 8 contacts the concave hole 9 of the one-way valve 6, and the outer tail of the baffle 8 is inserted into the card slot 14 to block it, thereby improving the blocking stability.

[0030] As an implementation method, Figure 2 and Figure 3 As shown, a first sealing ring 3 and a second sealing ring 5 corresponding to the filter connector 2 and the housing 7 are respectively installed on both sides of the large nut 4, and a second sealing ring 5 is installed at the end of the housing 7.

[0031] In this embodiment, the second sealing ring 5 strengthens the sealing between the shell 7 and the unloading return liquid steel pipe, and the large nut 4 and the shell 7, while the first sealing ring 3 improves the sealing between the filter joint 2 and the large nut 4, and the overall airtightness is strong.

[0032] As an implementation method, Figure 2 and Figure 3 As shown, the diameter of the moving block 11 matches the diameter of the inner wall of the housing 7 , and the moving block 11 and the blocking piece 8 are arranged parallel to each other.

[0033] In this embodiment, the moving block 11 is movable in the shell 7. When the unloading valve unloads and returns the liquid, the oil impact pushes the buffer pad 13 to compress the spring 12. Under the action of pressure, after the buffer pad 13 completes compression, the hydraulic energy and spring energy are stored, thereby driving the moving block 11 to continue to move. The moving block 11 is combined with the baffle 8 to block the one-way valve 6.

[0034] Working principle: When in use, one end of the housing 7 is installed on the unloading liquid return steel pipe. When the unloading valve unloads and returns the liquid, the liquid return steel pipe is connected to the housing 7. When the oil returns, the oil impact pushes the buffer pad 13 to compress the spring 12. Under the action of pressure, after the buffer pad 13 is compressed, it stores the hydraulic energy and spring energy, thereby driving the moving block 11 to move continuously. During the movement, the baffle 8 is driven to move toward the one-way valve 6 until the ball 10 of the baffle 8 contacts the concave hole 9 of the one-way valve 6, and the outer tail of the baffle 8 is stuck in the card slot 14 to block it, thereby solving the problem of excessive liquid return impact causing the one-way valve 6 to be stuck or the spring 12 to fail.

[0035] At the same time, after the unloading valve unloads the return liquid, a local low pressure or vacuum phenomenon may briefly appear in the return liquid steel pipe. The air filter 1 is used to connect to the outside air. At this time, the one-way valve 6 opens to balance the pressure. The air is connected through the filter connector 2 and the one-way valve 6. The external pressure pushes the baffle 8 toward the moving block 11 until the baffle 8 disengages from the slot 14, causing the baffle 8 to bend into a V shape, waiting for the next unloading valve to unload the return liquid.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0037] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A buffer device for an emulsion pump station, comprising a housing (7) connected to a liquid return steel pipe, characterized in that: One end of the housing (7) is threadedly connected to a large nut (4), one side of the large nut (4) is fixedly mounted with an air filter (1), the output end of the air filter (1) is fixedly connected to a filter connector (2), the filter connector (2) passes through the center of the large nut (4), and the extended end of the filter connector (2) is inserted into the interior of the housing (7), and the end of the filter connector (2) is provided with a one-way valve (6); A baffle (8) is slidably mounted inside the housing (7), and a slot (14) corresponding to the baffle (8) is provided on the inner wall of the housing (7). The baffle (8) is located on one side of the one-way valve (6). The baffle (8) is a conical structure, and a sphere (10) is fixedly mounted at the center of the baffle (8). A buffer is provided on the other side of the housing (7).

2. The buffer device of the emulsion pump station according to claim 1, characterized in that: The baffle (8) is an elastic structural component, and the diameter of the baffle (8) is larger than the inner wall diameter of the housing (7).

3. The buffer device of the emulsion pump station according to claim 1, characterized in that: The buffer member comprises a moving block (11) slidably mounted on the inner wall of the housing (7), a buffer pad (13) is provided on one side of the moving block (11), the other side of the moving block (11) is movably connected to the sphere (10), a spring (12) is fixedly connected between the buffer pad (13) and the moving block (11), one end of the spring (12) is connected to one side of the buffer pad (13), and the other end of the spring (12) is connected to one side of the moving block (11).

4. The buffer device of the emulsion pump station according to claim 3, characterized in that: A concave hole (9) for accommodating a ball (10) is provided on one side of the one-way valve (6).

5. The buffer device of the emulsion pump station according to claim 1, characterized in that: A first sealing ring (3) and a second sealing ring (5) corresponding to the filter connector (2) and the housing (7) are respectively installed on both sides of the large nut (4), and the second sealing ring (5) is installed at the end of the housing (7).

6. The buffer device of the emulsion pump station according to claim 3, characterized in that: The diameter of the moving block (11) matches the inner wall diameter of the housing (7), and the moving block (11) and the baffle (8) are arranged parallel to each other.

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