Oil and gas field wastewater suspended particulate matter removal device

Abstract

This utility model provides a device for removing suspended particulate matter from oil and gas field wastewater, belonging to the field of solid waste treatment technology. It solves the problems of blind spots and easy water leakage from the slag outlet in existing oil and gas field wastewater suspended particulate matter removal devices. It includes an inlet pipe and a filter cylinder rotatably sleeved outside the inlet pipe. The inlet pipe has an outlet hole communicating with the inner cavity of the filter cylinder. The filter cylinder has a coaxially arranged cylindrical section and a conical section, with the conical section transitionally connected to the cylindrical section and the smaller end of the conical section away from the cylindrical section. A first spiral guide plate located inside the cylindrical section and a second spiral guide plate located inside the conical section are fixedly connected to the inlet pipe. A waste collection chamber and a water collection chamber are provided below the filter cylinder, with the smaller end of the conical section located above the waste collection chamber. A first filter hole on the filter cylinder is located above the water collection chamber. The conical section buffers and blocks the water, preventing water from flowing from the smaller end of the conical section into the waste collection chamber.

Description

Technical Field

[0001] This utility model belongs to the field of solid waste treatment technology and relates to a device for removing suspended particulate matter from oil and gas field wastewater. Background Technology

[0002] During production and processing in oil and gas fields, a large amount of wastewater is discharged, which contains a large number of suspended solid particles that float on the water surface and are difficult to remove.

[0003] To this end, a Chinese patent discloses a suspended solids particle removal device for oil and gas field wastewater treatment [authorization announcement number CN218794377U], which includes a treatment box with the opening facing upwards. One end of the treatment box is connected to a water inlet pipe, and several through holes are connected to the water inlet pipe. A filter cylinder with one end open is rotatably connected to the outside of the water inlet pipe. Support frames are respectively connected to both ends of the filter cylinder. A micro-filter is connected between the support frames. A spiral guide plate is connected to the inner side of the micro-filter. A partition is connected to the bottom wall of the treatment box. The other end of the partition abuts against the support frame near the opening of the filter cylinder. A waste collection area is formed between the partition and the side wall of the treatment box near the opening of the filter cylinder. A waste discharge pipe is connected to the bottom of the waste collection area. A water chamber is formed between the partition and the side wall of the treatment box away from the opening of the filter cylinder.

[0004] The above-mentioned suspended solids removal device has the following problems: 1. Due to the gap between the end of the spiral guide plate and the end of the filter cylinder, the suspended solids in the gap cannot be removed by the spiral guide plate when the filter cylinder rotates, resulting in a working blind zone; 2. Because the through hole on the water inlet pipe is too close to the outlet end of the filter cylinder and no water-blocking structure is provided, the water entering the inside of the micro-filter from the water inlet pipe may enter the waste collection area under the action of the spiral guide plate, affecting the subsequent treatment of suspended solids. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a device for removing suspended particulate matter from oil and gas field wastewater that can prevent water from entering the waste collection chamber.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A device for removing suspended particulate matter from oil and gas field wastewater includes a horizontally extending inlet pipe with one end sealed, a support for the inlet pipe, and a filter cylinder rotatably sleeved outside the inlet pipe. The inlet pipe has an outlet hole communicating with the inner cavity of the filter cylinder. The filter cylinder is driven by a motor mounted on the support. The filter cylinder has a cylindrical section and a conical section arranged coaxially. The conical section is transitionally connected to the cylindrical section, and the small end of the conical section is away from the cylindrical section. The end of the cylindrical section away from the conical section is sealed. A first spiral guide plate located inside the cylindrical section and a second spiral guide plate located inside the conical section are fixedly connected to the inlet pipe. The outer ring surface of the first spiral guide plate contacts the inner surface of the cylindrical section, and the outer ring surface of the second spiral guide plate contacts the inner surface of the conical section. A waste collection chamber and a water collection chamber are provided below the filter cylinder. The small end of the conical section is located above the waste collection chamber, and a first filter hole on the filter cylinder is located above the water collection chamber.

[0008] The outer ring surface of the first spiral guide plate is cylindrical, and the outer ring surface of the second spiral guide plate is conical. During operation, the motor drives the filter cylinder to rotate around the inlet pipe. Oil and gas field wastewater enters through the inlet pipe and then flows into the inner cavity of the filter cylinder through the outlet. The conical section acts as a buffer and barrier, ensuring that water flows completely from the first filter hole to the collection chamber. Suspended particles are fed into the small end of the conical section by the action of the first and second spiral guide plates. A flow gap exists between the small end of the conical section and the inlet pipe, facilitating the entry of suspended particles into the waste collection chamber through this gap. The conical section buffers and blocks the water, preventing it from flowing from the small end of the conical section into the waste collection chamber.

[0009] In the above-mentioned oil and gas field wastewater suspended particulate matter removal device, the second spiral guide plate is provided with a second filter hole.

[0010] In the aforementioned oil and gas field wastewater suspended particulate matter removal device, the first spiral guide plate is provided with a third filter hole. When the filter cylinder rotates, the water conveyed forward can pass through the second filter hole and flow back to the cylindrical section. At the same time, the water conveyed forward passes through the third filter hole and flows back, reducing the forward conveying of water and preventing water from flowing out from the small end of the conical section.

[0011] In the above-mentioned oil and gas field wastewater suspended particulate matter removal device, the first filter hole on the filter cylinder is set on the cylindrical section.

[0012] In the aforementioned oil and gas field wastewater suspended particulate matter removal device, the portion of the inlet pipe located at the small end of the conical section is conical. This reduces the outer diameter of the inlet pipe, increasing the flow gap between the outer surface of the inlet pipe and the small end of the conical section, thus facilitating the discharge of suspended particulate matter.

[0013] In the above-mentioned oil and gas field wastewater suspended particulate matter removal device, the first spiral guide plate is connected to the second spiral guide plate, and the connection between the first spiral guide plate and the second spiral guide plate is located at the transition connection between the cylindrical section and the conical section.

[0014] In the aforementioned oil and gas field wastewater suspended particulate matter removal device, a circular baffle is fixed to the inlet pipe inside the filter cylinder. The outer circumference of the circular baffle contacts the inner surface of the cylindrical section, and the end of the first spiral guide plate away from the second spiral guide plate is fixedly connected to the circular baffle. The circular baffle can block oil and gas field wastewater and suspended particulate matter, ensuring that all suspended particulate matter entering the inner cavity of the filter cylinder can be scraped away by the first spiral guide plate, without any blind spots.

[0015] In the above-mentioned oil and gas field wastewater suspended particulate matter removal device, a driven gear is coaxially fixed to the filter cylinder, the driven gear meshes with a driving gear, and the driving gear is driven by the above-mentioned motor.

[0016] In the above-mentioned oil and gas field wastewater suspended particulate matter removal device, at least two sets of support rollers are provided below the filter cylinder. Each set of support rollers includes two support rollers whose axes are parallel to the axis of the water inlet pipe. The two support rollers in the same set of support rollers are symmetrically arranged along the axis of the filter cylinder and are in rolling contact with the filter cylinder.

[0017] Support the filter cartridge to improve its stability during operation.

[0018] A support is installed inside the water collection cavity, and the rollers are mounted on the support to support their rotation.

[0019] Compared with existing technologies, this oil and gas field wastewater suspended particulate matter removal device has the following advantages: the conical section buffers and blocks the water, preventing water from flowing from the small end of the conical section to the waste collection chamber; the second and third filter holes reduce the forward transport of water, further preventing water from flowing into the waste collection chamber; the circular baffle ensures that all suspended particulate matter entering the inner cavity of the filter cylinder can be scraped away by the first spiral guide plate, without any blind spots. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the wastewater particulate matter removal device in this oil and gas field.

[0021] Figure 2 This is a schematic diagram of the structure of the water inlet pipe provided by this utility model.

[0022] Figure 3 This is a schematic diagram showing the cooperation between the support roller and the filter cylinder provided by this utility model.

[0023] In the diagram, 1. Water inlet pipe; 2. Support; 3. Filter cylinder; 4. Water outlet; 5. Motor; 6. Cylindrical section; 7. Conical section; 8. First spiral guide plate; 9. Second spiral guide plate; 10. Waste collection chamber; 11. Water collection chamber; 12. First filter hole; 13. Second filter hole; 14. Third filter hole; 15. Circular baffle; 16. Driven gear; 17. Driven gear; 18. Support wheel assembly; 19. Support roller; 20. Support. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1 The oil and gas field wastewater suspended particulate matter removal device shown includes an inlet pipe 1 that is sealed at the left end and extends horizontally, a bracket 2 for supporting the inlet pipe 1, and a filter cylinder 3 that is rotatably sleeved outside the inlet pipe 1. The inlet pipe 1 has an outlet hole 4 that communicates with the inner cavity of the filter cylinder 3. The filter cylinder 3 is driven by a motor 5 mounted on the bracket 2. Specifically, a driven gear 16 is coaxially fixed to the filter cylinder 3, and the driven gear 16 meshes with a driving gear 17, which is driven by the motor 5. When the motor 5 is working, it can drive the driving gear 17 to rotate, which in turn drives the driven gear 16 to rotate, ultimately causing the filter cylinder 3 to rotate around the inlet pipe 1.

[0026] To prevent water from flowing out of the slag outlet of filter cartridge 3, such as Figure 1 As shown, the filter cartridge 3 has a cylindrical section 6 and a conical section 7 arranged coaxially. The conical section 7 is transitionally connected to the cylindrical section 6, and the small end of the conical section 7 is away from the cylindrical section 6. The end of the cylindrical section 6 away from the conical section 7 (the right end) is blocked.

[0027] like Figure 1 and Figure 2 As shown, a first spiral guide plate 8 located in the cylindrical section 6 and a second spiral guide plate 9 located in the conical section 7 are fixedly connected to the periphery of the water inlet pipe 1. The outer ring surface of the first spiral guide plate 8 is a cylindrical surface, and the outer ring surface of the second spiral guide plate 9 is a conical surface. The outer ring surface of the first spiral guide plate 8 is in contact with the inner surface of the cylindrical section 6, and the outer ring surface of the second spiral guide plate 9 is in contact with the inner surface of the conical section 7.

[0028] In this embodiment, the first spiral guide plate 8 is connected to the second spiral guide plate 9, and the connection between the first spiral guide plate 8 and the second spiral guide plate 9 is located at the transition connection between the cylindrical section 6 and the conical section 7.

[0029] like Figure 1 and Figure 2As shown, the second spiral guide plate 9 is provided with a second filter hole 13, and the first spiral guide plate 8 is provided with a third filter hole 14. When the filter cylinder 3 rotates, the water conveyed forward can flow back to the cylindrical section 6 through the second filter hole 13, and at the same time, the water conveyed forward can flow back through the third filter hole 14, reducing the forward conveying of water and preventing water from flowing out from the small end of the conical section 7.

[0030] like Figure 1 As shown, the filter cylinder 3 is provided with a waste collection chamber 10 and a water collection chamber 11 below it. The small end (left end) of the conical section 7 is located above the waste collection chamber 10. The first filter hole 12 on the filter cylinder 3 is located above the water collection chamber 11, and several first filter holes 12 are provided on the cylindrical section 6.

[0031] like Figure 1 and Figure 2 As shown, the portion of the inlet pipe 1 located at the small end of the conical section 7 is conical. This reduces the outer diameter of the inlet pipe 1, increasing the flow gap between the outer surface of the inlet pipe 1 and the small end of the conical section 7, thus facilitating the discharge of suspended particulate matter.

[0032] like Figure 1 and Figure 2 As shown, a circular baffle 15 is fixed on the inlet pipe 1 and located inside the filter cylinder 3. The outer ring surface of the circular baffle 15 contacts the inner surface of the cylindrical section 6. The end of the first spiral guide plate 8 away from the second spiral guide plate 9 is fixedly connected to the circular baffle 15. The circular baffle 15 can block oil and gas field wastewater and suspended particulate matter, ensuring that all suspended particulate matter entering the inner cavity of the filter cylinder 3 can be scraped away by the first spiral guide plate 8, without any blind spots.

[0033] like Figure 1 As shown, at least two sets of support wheels 18 are provided below the filter cartridge 3, such as... Figure 3 As shown, each set of support rollers 18 includes two support rollers 19 whose axes are parallel to the axis of the water inlet pipe 1. The two support rollers 19 in the same set of support rollers 18 are symmetrically arranged along the axis of the filter cylinder 3 and both are in rolling contact with the filter cylinder 3. Figure 3 As shown, a support 20 is provided in the water collection cavity 11, and the supporting roller 19 is rotatably mounted on the support 20.

[0034] During operation, motor 5 drives filter cylinder 3 to rotate around inlet pipe 1. Oil and gas field wastewater enters through inlet pipe 1 and then flows into the inner cavity of filter cylinder 3 through outlet hole 4. Under the blocking and buffering effect of conical section 7 and the backflow effect of second-stage third filter hole 14, water can be ensured to flow completely from first filter hole 12 to collection chamber 11. Suspended particles are sent into the small end of conical section 7 by the action of first spiral guide plate 8 and second spiral guide plate 9. There is a flow gap between the small end of conical section 7 and inlet pipe 1, which facilitates the entry of suspended particles into waste collection chamber 10 through the flow gap. At the same time, due to the setting of circular baffle 15, oil and gas field wastewater and suspended particles can be blocked, ensuring that all suspended particles entering the inner cavity of filter cylinder 3 can be scraped away by first spiral guide plate 8, without blind spots.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A device for removing suspended particulate matter from oil and gas field wastewater, characterized in that, The system includes a water inlet pipe (1) that is sealed at one end and extends horizontally, a bracket (2) for supporting the water inlet pipe (1), and a filter cylinder (3) that is rotatably sleeved outside the water inlet pipe (1). The water inlet pipe (1) is provided with a water outlet hole (4) that communicates with the inner cavity of the filter cylinder (3). The filter cylinder (3) is driven by a motor (5) mounted on the bracket (2). The filter cylinder (3) has a cylindrical section (6) and a conical section (7) arranged coaxially. The conical section (7) is transitionally connected to the cylindrical section (6), and the small end of the conical section (7) is away from the cylindrical section (6). The end of the cylindrical section (6) away from the conical section (7) is sealed. The water inlet pipe (1) is fixedly connected to a first spiral guide plate (8) located in the cylindrical section (6) and a second spiral guide plate (9) located in the conical section (7). The outer ring surface of the first spiral guide plate (8) is in contact with the inner surface of the cylindrical section (6), and the outer ring surface of the second spiral guide plate (9) is in contact with the inner surface of the conical section (7). The filter cylinder (3) is provided with a waste collection chamber (10) and a water collection chamber (11) below it. The small end of the conical section (7) is located above the waste collection chamber (10), and the first filter hole (12) on the filter cylinder (3) is located above the water collection chamber (11).

2. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, The second spiral guide plate (9) is provided with a second filter hole (13).

3. The oil and gas field wastewater suspended particulate matter removal device according to claim 1 or 2, characterized in that, The first spiral guide plate (8) is provided with a third filter hole (14).

4. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, The first filter hole (12) on the filter cylinder (3) is set on the cylindrical section (6).

5. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, The portion of the inlet pipe (1) located at the small end of the conical section (7) is conical.

6. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, The first spiral guide plate (8) is connected to the second spiral guide plate (9), and the connection between the first spiral guide plate (8) and the second spiral guide plate (9) is located at the transition connection between the cylindrical section (6) and the conical section (7).

7. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, A circular baffle (15) is fixed on the water inlet pipe (1) and located inside the filter cylinder (3). The outer ring surface of the circular baffle (15) is in contact with the inner surface of the cylindrical section (6). The end of the first spiral guide plate (8) away from the second spiral guide plate (9) is fixedly connected to the circular baffle (15).

8. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, A driven gear (16) is coaxially fixed to the filter cylinder (3). The driven gear (16) meshes with a driving gear (17), which is driven by the motor (5) mentioned above.

9. The oil and gas field wastewater suspended particulate matter removal device according to claim 1, characterized in that, At least two sets of support rollers (18) are provided below the filter cylinder (3). Each set of support rollers (18) includes two support rollers (19) whose axes are parallel to the axis of the water inlet pipe (1). The two support rollers (19) in the same set of support rollers (18) are symmetrically arranged along the axis of the filter cylinder (3) and both are in rolling contact with the filter cylinder (3).

Images