Waste liquid collecting device

Abstract

The utility model relates to the technical field of rock core displacement experiments, in particular to a waste liquid collecting device. The waste liquid collecting device comprises a liquid accumulation tank, a liquid inlet pipe is fixedly mounted on the liquid accumulation tank, a threaded quick-connection branch pipe is fixedly mounted on the liquid inlet pipe, a mounting cylinder in threaded connection is mounted at the top of the liquid inlet pipe, a sealing column is mounted at the bottom of the mounting cylinder, and an activated carbon column is mounted in the mounting cylinder; and a self-locking valve group is mounted in the liquid inlet pipe. According to the waste liquid collecting device, sealing of waste liquid is achieved, the self-locking valve set achieves automatic sealing and opening of the spherical opening through matching of the steel ball and the spring, it is ensured that gas emission in the waste liquid collecting process is effectively controlled, the sealing performance of the device is greatly improved through the double-sealing structure, and the sealing performance of the device is improved. And at the beginning of waste liquid discharge of the threaded quick-connection branch pipe, the concentration of VOCS or H2S overflowing at the moment of liquid discharge of the liquid accumulation tank is reduced by the arranged activated carbon column.

Description

Technical Field

[0001] The utility model relates to the technical field of core displacement experiments, in particular to a waste liquid collection device. Background Art

[0002] During core flooding experiments, waste liquids containing volatile organic compounds (VOCS) or hydrogen sulfide (H2S) are often generated, necessitating collection. However, traditional waste liquid collection tanks have numerous shortcomings in terms of sealing and flexibility. Specifically, traditional collection tanks often employ a single sealing structure with a simple liquid inlet seal, which allows for the leakage of harmful gases during waste liquid storage, threatening the safety of experimenters. Because the diameter of the lid of traditional collection tanks is the same as the tank body, after a certain period of storage, the high concentration of VOCS / H2S accumulated in the tank can cause the lid to bulge. Due to the lack of a purification function, the high concentration of VOCS / H2S accumulated in the tank is instantly released when the lid is opened to discharge the waste liquid, thereby exceeding environmental safety standards.

[0003] Therefore, it is necessary to provide a new waste liquid collection device to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a waste liquid collection device.

[0005] The waste liquid collection device provided by the utility model includes a liquid accumulation tank, a liquid inlet pipe is fixedly installed on the liquid accumulation tank, and the pipe mouth of the liquid inlet pipe is a threaded mouth structure, a threaded quick-connect branch pipe is fixedly installed on the liquid inlet pipe below the threaded mouth, and the connection between the threaded quick-connect branch pipe and the liquid inlet pipe is a convection port, a threaded mounting cylinder is installed on the top of the liquid inlet pipe, and a sealing column for sealing the convection port is installed on the bottom of the mounting cylinder;

[0006] The bottom of the installation cylinder is connected to the spherical opening in the sealing column and is fixedly installed with a stainless steel screen, and an activated carbon column is installed in the installation cylinder;

[0007] A self-locking valve group for sealing the spherical port is installed in the liquid inlet pipe.

[0008] Preferably, the sealing column below the spherical opening is provided with an expansion cavity.

[0009] Preferably, the self-locking valve group includes a mounting ring frame, which is fixedly installed in the liquid inlet pipe below the convection port, and a sliding rod with a sliding connection is inserted into the mounting ring frame, a steel ball for sealing the spherical port is fixedly installed on the top of the sliding rod, and a spring is sleeved on the sliding rod.

[0010] Preferably, one end of the spring is fixedly connected to the lower spherical surface of the steel ball, and the other end of the spring is fixedly connected to the upper surface of the mounting ring.

[0011] Preferably, the bottom of the mounting tube is provided with an external thread section, and the mounting tube is threadedly fixedly connected to the threaded opening through the external thread section, and the top of the mounting tube is fixed with a tube cover for sealing the top tube opening of the mounting tube by screws.

[0012] Preferably, the mounting tube is provided with a rotating ring for rotational connection, and the lower ring surface of the rotating ring is fixedly provided with a plurality of annularly distributed connecting frames, the bottom fixed frame of the connecting frame is provided with a sliding ring coaxially arranged with the rotating ring, and the sliding ring is sleeved on the liquid inlet pipe.

[0013] Preferably, a limiting ring for limiting the sliding ring from slipping is fixedly installed on the upper pipe opening of the liquid inlet pipe.

[0014] Compared with the related art, the waste liquid collection device provided by the utility model has the following beneficial effects:

[0015] The utility model realizes the sealing of waste liquid through the cooperation of the sealing column and the self-locking valve group. The sealing column is installed at the bottom of the installation cylinder to seal the convection port to prevent the waste liquid from overflowing, and the self-locking valve group realizes the automatic sealing and opening of the spherical port through the cooperation of the steel ball and the spring, thereby ensuring that the gas emission in the waste liquid collection process is effectively controlled. The double sealing structure greatly improves the sealing performance of the device. When the threaded quick-connect branch pipe initially discharges the waste liquid, part of the VOCS or H2S accumulated in the liquid storage tank can overflow into the installation cylinder and be processed by the activated carbon column, thereby reducing the concentration of VOCS or H2S overflowing when the liquid storage tank is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of the waste liquid collection device provided by the present utility model;

[0017] Figure 2 for Figure 1 The cross-sectional structural diagram shown;

[0018] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A shown.

[0019] Numbers in the figure: 1. Liquid storage tank; 2. Liquid inlet pipe; 21. Threaded quick-connect branch pipe; 22. Threaded mouth; 3. Mounting cylinder; 31. External thread section; 32. Cylinder cover; 4. Sealing column; 4a. Expansion cavity; 4b. Spherical mouth; 5. Stainless steel spacer; 6. Activated carbon column; 7. Self-locking valve group; 71. Mounting ring bracket; 72. Sliding rod; 73. Steel ball; 74. Spring; 8. Rotating ring; 81. Connecting bracket; 9. Sliding ring. 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 with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0022] See also Figures 1 to 3 An embodiment of the present invention provides a waste liquid collection device, which includes a liquid collection tank 1, a liquid inlet pipe 2, a mounting cylinder 3, a sealing column 4, an activated carbon column 6 and a self-locking valve group 7.

[0023] In the embodiments of the present invention, please refer to Figures 1 to 3 , a liquid inlet pipe 2 is fixedly installed on the liquid accumulation tank 1, and the pipe mouth of the liquid inlet pipe 2 is a threaded mouth 22 structure, a threaded quick-connect branch pipe 21 is fixedly installed on the liquid inlet pipe 2 below the threaded mouth 22, and the connection between the threaded quick-connect branch pipe 21 and the liquid inlet pipe 2 is a convection port, a threaded mounting cylinder 3 is installed on the top of the liquid inlet pipe 2, and a sealing column 4 for sealing the convection port is installed at the bottom of the mounting cylinder 3, the bottom of the mounting cylinder 3 and the spherical port 4b provided in the sealing column 4 are communicated with each other and a stainless steel partition 5 is fixedly installed, and an activated carbon column 6 is installed in the mounting cylinder 3, and the sealing column 4 below the spherical port 4b is provided with an expansion cavity 4a;

[0024] A self-locking valve group 7 for sealing the spherical port 4b is installed in the liquid inlet pipe 2. The self-locking valve group 7 includes a mounting ring frame 71. The mounting ring frame 71 is fixedly installed in the liquid inlet pipe 2 below the convection port, and a sliding rod 72 with a sliding connection is inserted on the mounting ring frame 71. A steel ball 73 for blocking the spherical port 4b is fixedly installed on the top of the sliding rod 72, and a spring 74 is sleeved on the sliding rod 72. One end of the spring 74 is fixedly connected to the lower spherical surface of the steel ball 73, and the other end of the spring 74 is fixedly connected to the upper surface of the mounting ring frame 71.

[0025] It should be noted that when collecting waste liquid containing VOCS or H2S in a core flooding experiment, the liquid guide tube is threadedly connected to the threaded quick-connect branch pipe 21, and then the installation cylinder 3 is screwed upward so that the installation cylinder 3 drives the sealing column 4 to slide upward along the liquid inlet pipe 2, so that the sealing column 4 no longer blocks the convection port. During this process, due to the upward sliding of the sealing column 4, the steel ball 73 no longer blocks the spherical port 4b;

[0026] The waste liquid is then discharged into the liquid storage tank 1 for collection. At this time, the volatilized VOCS or H2S passes through the expansion cavity 4a → spherical mouth 4b → installation cylinder 3, and is then purified by the activated carbon column 6. After the liquid is accumulated, the installation cylinder 3 is screwed down to drive the sealing column 4 to slide down along the liquid inlet pipe 2 and seal the convection port. At the same time, the steel ball 73 seals the spherical mouth 4b again, so that the liquid storage tank 1 can seal and store the waste liquid.

[0027] In this embodiment, when the waste liquid collected in the liquid storage tank 1 needs to be discharged, the mounting cylinder 3 is screwed upward so that the mounting cylinder 3 drives the sealing column 4 to slide up along the liquid inlet pipe 2, so that the sealing column 4 no longer blocks the convection port. At the same time, the steel ball 73 no longer blocks the spherical port 4b. Therefore, when the threaded quick-connect branch pipe 21 is initially used to discharge the waste liquid, part of the VOCS or H2S accumulated in the liquid storage tank 1 can overflow into the mounting cylinder 3 and be processed by the activated carbon column, thereby reducing the instantaneous concentration of VOCS or H2S overflowing when the liquid is discharged from the liquid storage tank 1.

[0028] It is worth noting that the diameter of the threaded quick-connect branch pipe 21 in this application is smaller than the diameter of the traditional tank drain port, which further reduces the instantaneous concentration of VOCS or H2S when it overflows from the threaded quick-connect branch pipe 21.

[0029] In addition, when the liquid storage tank 1 is tilted so that the waste liquid is discharged from the threaded quick-connect branch pipe 21, since the activated carbon column 6 is located above the threaded quick-connect branch pipe 21, the highest point of the waste liquid discharge is basically lower than the activated carbon column 6. If part of the waste liquid seeps into the installation tube 3, a new activated carbon column 6 can be replaced and the inside of the installation tube 3 can be cleaned.

[0030] The present application realizes the sealing of waste liquid through the cooperation of the sealing column 4 and the self-locking valve group 7. The sealing column 4 is installed at the bottom of the mounting cylinder 3 to seal the convection port to prevent the waste liquid from overflowing. At the same time, the self-locking valve group 7 realizes the automatic sealing and opening of the spherical port 4b through the cooperation of the steel ball 73 and the spring 74, ensuring that the gas emission during the waste liquid collection process is effectively controlled. This double sealing structure greatly improves the sealing performance of the device.

[0031] In addition, when storing waste liquid, the present application realizes the sealing of the threaded quick-connect branch pipe 21 and the convection port through the cooperation of the sealing column 4 and the self-locking valve group 7, so that the activated carbon column 6 does not purify or adsorb the gas when the waste liquid is stored, avoiding the activated carbon column 6 losing its purification and adsorption function in the later stage due to continuous adsorption of gas, resulting in VOCS or H2S overflowing from the waste liquid and accumulating at the top of the liquid storage tank 1, and the hidden danger of the instantaneous concentration of VOCS or H2S discharged from the liquid storage tank 1 being still high during the subsequent discharge of waste liquid.

[0032] Furthermore, an external thread section 31 is provided at the bottom of the mounting cylinder 3, and the mounting cylinder 3 is threadedly fixedly connected to the threaded opening 22 through the external thread section 31. A cylinder cover 32 for sealing the top cylinder opening of the mounting cylinder 3 is fixedly installed on the top of the mounting cylinder 3 by screws. The activated carbon column 6 can be replaced regularly by removing the cylinder cover 32.

[0033] Furthermore, a rotating ring 8 with a rotatable connection is sleeved on the mounting tube 3, and a plurality of annularly distributed connecting frames 81 are fixedly installed on the lower ring surface of the rotating ring 8, and a sliding ring 9 is fixed on the bottom of the connecting frame 81 and is coaxially arranged with the rotating ring 8. The sliding ring 9 is sleeved on the liquid inlet pipe 2, and a limiting ring for limiting the slipping of the sliding ring 9 is fixedly installed on the upper pipe mouth of the liquid inlet pipe 2. The rotating ring 8, sliding ring 9 and limiting ring can prevent the mounting tube 3 from slipping from the top of the liquid inlet pipe 2.

[0034] Among them, the steel ball 73 in the self-locking valve group 7 is made of Hastelloy C276, and the spring 74 is made of high-nickel-chromium alloy, thereby improving the rust and corrosion resistance of the steel ball 73 and the spring 74. At the same time, a polytetrafluoroethylene (PTFE) retaining ring (not shown in the figure) can be installed above the mounting ring frame 71 of the self-locking valve group 7 to prevent waste liquid from directly splashing onto the spring 74 and avoid long-term contact between the steel ball 73 and the corrosive medium.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A waste liquid collection device, characterized in that: The invention comprises a liquid storage tank (1), wherein a liquid inlet pipe (2) is fixedly mounted on the liquid storage tank (1), and the pipe mouth of the liquid inlet pipe (2) is a threaded mouth (22) structure, a threaded quick-connect branch pipe (21) is fixedly mounted on the liquid inlet pipe (2) below the threaded mouth (22), and the connection between the threaded quick-connect branch pipe (21) and the liquid inlet pipe (2) is a convection port, a threaded mounting cylinder (3) is mounted on the top of the liquid inlet pipe (2), and a sealing column (4) for sealing the convection port is mounted on the bottom of the mounting cylinder (3); The bottom of the installation cylinder (3) is in communication with the spherical opening (4b) provided in the sealing column (4) and is fixedly provided with a stainless steel screen (5), and an activated carbon column (6) is installed in the installation cylinder (3); A self-locking valve assembly (7) for sealing the spherical opening (4b) is installed in the liquid inlet pipe (2).

2. The waste liquid collection device according to claim 1, characterized in that: The sealing column (4) below the spherical opening (4b) is provided with an expansion cavity (4a).

3. The waste liquid collection device according to claim 2, characterized in that: The self-locking valve assembly (7) comprises a mounting ring frame (71), the mounting ring frame (71) being fixedly mounted in the liquid inlet pipe (2) below the convection port, and a sliding rod (72) being inserted into the mounting ring frame (71) for sliding connection, a steel ball (73) for sealing the spherical port (4b) being fixedly mounted on the top of the sliding rod (72), and a spring (74) being sleeved on the sliding rod (72).

4. The waste liquid collection device according to claim 3, characterized in that: One end of the spring (74) is fixedly connected to the lower spherical surface of the steel ball (73), and the other end of the spring (74) is fixedly connected to the upper surface of the mounting ring frame (71).

5. The waste liquid collection device according to claim 1, characterized in that: The bottom of the installation cylinder (3) is provided with an external thread section (31), and the installation cylinder (3) is threadedly fixedly connected to the threaded opening (22) via the external thread section (31). The top of the installation cylinder (3) is fixedly mounted with a cylinder cover (32) for sealing the top opening of the installation cylinder (3) via screws.

6. The waste liquid collection device according to claim 1, characterized in that: A rotating ring (8) is sleeved on the mounting cylinder (3) and is rotatably connected. A plurality of annularly distributed connecting frames (81) are fixedly mounted on the lower ring surface of the rotating ring (8). A sliding ring (9) is coaxially arranged with the rotating ring (8) on the bottom fixed frame of the connecting frame (81), and the sliding ring (9) is sleeved on the liquid inlet pipe (2).

7. The waste liquid collection device according to claim 6, characterized in that: A limiting ring for limiting the sliding ring (9) from slipping is fixedly mounted on the upper pipe opening of the liquid inlet pipe (2).

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