Underground drainage filter head

Abstract

The utility model discloses an underground drainage filter head, which relates to the technical field of drainage filter heads, and comprises a cylindrical shell, a balancing weight and a buoyancy piece, a joint is arranged at the center of the top of the shell, a plurality of water inlets are uniformly arranged on the side surface of the shell, the balancing weight is arranged at the center of the upper surface of the bottom of the shell, and the buoyancy piece is arranged at the bottom of the shell. The buoyancy piece is arranged on the upper surface of the top of the shell, and the buoyancy of the buoyancy piece, the shell and the balancing weight is smaller than the gravity of the buoyancy piece, the shell and the balancing weight; the buoyancy of the buoyancy piece, the shell and the balancing weight is smaller than the gravity of the buoyancy piece, the shell and the balancing weight, the shell falls to the water bottom after being placed in water, and due to the fact that the top is light and provided with the buoyancy piece, and the bottom is heavy and provided with the balancing weight, the water drainage device can vertically stand in the water and cannot topple over, the water drainage working effect is better, and the cavitation erosion phenomenon can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of drainage filter head technology, specifically a well drainage filter head. Background Technology

[0002] The function of a downhole drainage filter head is to filter out some impurities and dirt in the water to ensure the normal operation of the pump. Most drainage filter heads have their inlet located on the side surface.

[0003] However, during downhole drainage operations, the drainage filter head needs to be placed in the water and positioned at the bottom. The filter head is very likely to tip over. This is especially true when the bottom surface has accumulated silt or is uneven. If the water quality is good and there is no silt or impurities, the impact is minimal. However, if there are many impurities or silt at the bottom, it can lead to the following technical problems:

[0004] Because the inlet at the bottom of the filter head comes into direct contact with silt and impurities after being tilted, blocking part of the inlet, the direct contact area between the filter head inlet and the water body is reduced, which reduces the effective water absorption cross section and increases the filtration load. In severe cases, it can create a local area with excessively high flow velocity, which may induce cavitation. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a downhole drainage filter head. A counterweight is installed at the bottom of the shell, and a buoyancy component is installed at the top. The buoyancy of the buoyancy component, shell, and counterweight is less than the weight of the buoyancy component, shell, and counterweight. When the shell is placed in water, it sinks to the bottom. Because the top is light and has a buoyancy component, and the bottom is heavy and has a counterweight, it will stand upright in the water and will not tip over, ensuring an effective water absorption cross section, improving drainage performance, and preventing cavitation.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a downhole drainage filter head, comprising a cylindrical shell, a counterweight, and a buoyancy component. A connector is provided at the center of the top of the shell, and multiple water inlets are evenly arranged on the side surface of the shell. The counterweight is located at the center of the upper surface of the bottom of the shell, and the buoyancy component is located on the upper surface of the top of the shell. The buoyancy of the buoyancy component, the shell, and the counterweight is less than the weight of the buoyancy component, the shell, and the counterweight.

[0007] Preferably, the bottom of the housing has a stepped opening, and a matching fixing plate is provided in the stepped opening. The fixing plate is screwed to the housing by a first screw. The counterweight is located at the center of the upper surface of the fixing plate and is screwed to the fixing plate by a second screw.

[0008] Preferably, the buoyancy component is designed in a ring shape and is coaxial with the shell. The buoyancy component is bound by straps and fixed to the shell by a third screw.

[0009] Preferably, the fixing plate has a hidden groove at the position corresponding to the head of the first screw and the head of the second screw, and the head of the first screw and the head of the second screw are disposed in the hidden groove.

[0010] Preferably, the counterweight is made of cast iron.

[0011] Preferably, the counterweight is designed in a hemispherical shape.

[0012] Preferably, the buoyancy component adopts a hollow structure made of polyethylene material.

[0013] Preferably, the water inlet is arranged in a ring.

[0014] This utility model provides a downhole drainage filter head, which has the following beneficial effects:

[0015] 1. This utility model has a counterweight at the bottom of the shell and a buoyancy component at the top. The buoyancy of the buoyancy component, the shell, and the counterweight is less than the weight of the buoyancy component, the shell, and the counterweight. When the shell is placed in water, it sinks to the bottom. Because the top is light and has a buoyancy component, and the bottom is heavy and has a counterweight, it will stand upright in the water and will not tip over, ensuring an effective water absorption section, better drainage performance, and preventing cavitation.

[0016] 2. The bottom of the shell of this utility model has a stepped opening. The shape of the fixing plate matches the stepped opening and is screwed to the shell by the first screw. The fixing plate is detachable, which allows for cleaning of the inside of the shell. The counterweight is set on the upper surface of the fixing plate and is screwed to it by the second screw. The counterweight can be disassembled and replaced to improve applicability. In addition, the buoyancy component can be made into a ring shape to make the top of the shell evenly stressed. Of course, the buoyancy component is fixed by the third screw and the strap and can also be disassembled. With the counterweight, it is suitable for different water qualities and improves applicability. Attached Figure Description

[0017] Figure 1 This is a front cross-sectional view of a well drainage filter head according to the present invention.

[0018] In the diagram: 1. First screw; 2. Fixing plate; 3. Second screw; 4. Hidden groove; 5. Stepped opening; 6. Counterweight; 7. Water inlet; 8. Shell; 9. Connector; 10. Strap; 11. Third screw; 12. Buoyancy component. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 As shown, a downhole drainage filter head includes a cylindrical shell 8, a counterweight 6, and a buoyancy component 12. A connector 9 is located at the center of the top of the shell 8, and multiple water inlets 7 are evenly distributed on the side surface of the shell 8. The counterweight 6 is located at the center of the upper bottom surface of the shell 8, and the buoyancy component 12 is located on the upper top surface of the shell 8. The buoyancy of the buoyancy component 12, the shell 8, and the counterweight 6 is less than the weight of the buoyancy component 12, the shell 8, and the counterweight 6. A stepped opening 5 is provided at the bottom of the shell 8, and a matching fixing plate 2 is provided within the stepped opening 5. The fixing plate 2 is screwed and fixed to the shell 8 by a first screw 1. The counterweight 6 is located at the center of the upper surface of the fixed plate 2, and is fixed to the fixed plate 2 by screwing on the second screw 3; the buoyancy component 12 is designed in a ring shape and is coaxial with the shell 8. The buoyancy component 12 is bound by the strap 10 and fixed to the shell 8 by the third screw 11; the fixed plate 2 has a hidden groove 4 at the position corresponding to the head of the first screw 1 and the second screw 3, and the heads of the first screw 1 and the second screw 3 are set in the hidden groove 4; the counterweight 6 is made of cast iron; the counterweight 6 is designed in a hemispherical shape; the buoyancy component 12 is a hollow structure made of polyethylene; the water inlet 7 is arranged in a ring.

[0021] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows:

[0022] According to the instruction manual Figure 1 As can be seen, when using this utility model, personnel connect to the external pump body water pipe through connector 9. The water pipe is long enough, and the shell 8 is placed in the mine water. Since the weight of the shell 8, counterweight 6, and buoyancy component 12 is greater than the buoyancy of the three, the shell 8 will sink. Since the counterweight 6 is set at the bottom of the shell 8 and the buoyancy component 12 is set at the top of the shell 8, the overall center of gravity is close to or on the counterweight 6. During the sinking process, the bottom of the shell 8 is lower and the top is higher. After landing on the bottom of the water, the overall center of gravity is close to or on the counterweight 6. The design of the buoyancy component 12 can still make the top of the shell 8 tend to stand up. Here, in the design, it is necessary to consider that the buoyancy of the buoyancy component 12 is sufficient to make the top of the shell 8 stand up and not tilt, to ensure an effective water absorption section, better drainage effect, and to avoid cavitation.

[0023] In practical use, standing upright is the ideal and optimal state. However, if the buoyancy component 12 can make the top of the shell 8 tilted rather than tipped over, then the water inlet 7 will also be at a certain distance from the bottom of the water. Compared with the prior art, it can also achieve the technical effect of this application, but it does not reach the optimal state.

[0024] The shell 8 has a stepped opening 5 at its bottom, within which a matching fixing plate 2 is installed. The fixing plate 2 is screwed to the shell 8 by a first screw 1. A counterweight 6 is positioned at the center of the upper surface of the fixing plate 2 and is screwed to the fixing plate 2 by a second screw 3. The fixing plate 2 is removable, allowing for cleaning of the interior of the shell 8. The counterweight 6 can be removed and replaced, and adjusted in conjunction with the buoyancy component 12 to improve applicability. The buoyancy component 12 is secured to the shell 8 by straps 10 and a third screw 11, and can also be removed for adjustment. Furthermore, different water qualities and densities result in different buoyancy levels, requiring adjustments based on actual conditions to enhance applicability. However, once configured, adjustment is usually unnecessary.

[0025] The buoyancy component 12 is designed as a ring and is coaxial with the shell 8, so that the top of the shell 8 is subjected to uniform force and the resultant force of buoyancy is located on the axis of the shell 8, making it more stable when standing upright.

[0026] The fixing plate 2 has a hidden groove 4 at the position corresponding to the head of the first screw 1 and the second screw 3. The heads of the first screw 1 and the second screw 3 are set in the hidden groove 4 to ensure the flatness of the bottom of the housing 8.

[0027] The counterweight 6 is made of cast iron, which is not afraid of sand and gravel erosion and has good wear resistance. The counterweight 6 is designed in a hemispherical shape, which can lower the center of gravity.

[0028] Among them, the buoyancy component 12 adopts a hollow structure made of polyethylene material, which has high buoyancy and is wear-resistant.

[0029] The water inlet 7 is arranged in a ring. When the shell 8 is erected, the water flows in evenly during pumping, which prevents the shell 8 from tipping over and improves the stability during operation.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A downhole drain filter head, characterized by, It includes a cylindrical shell (8), a counterweight (6) and a buoyancy component (12). A connector (9) is provided at the center of the top of the shell (8). Multiple water inlets (7) are evenly provided on the side surface of the shell (8). The counterweight (6) is located at the center of the bottom upper surface of the shell (8). The buoyancy component (12) is located on the top upper surface of the shell (8). The buoyancy of the buoyancy component (12), the shell (8) and the counterweight (6) is less than the weight of the buoyancy component (12), the shell (8) and the counterweight (6).

2. A downhole water discharge filter head according to claim 1, characterised in that The bottom of the housing (8) is provided with a stepped opening (5), and a matching fixing plate (2) is provided in the stepped opening (5). The fixing plate (2) is screwed to the housing (8) by a first screw (1). The counterweight (6) is located at the center of the upper surface of the fixing plate (2), and the counterweight (6) is screwed to the fixing plate (2) by a second screw (3).

3. A downhole water discharge filter head according to claim 1, characterized in that The buoyancy component (12) is designed in a ring shape and is coaxial with the shell (8). The buoyancy component (12) is bound by a strap (10) and fixed to the shell (8) by a third screw (11).

4. A downhole water discharge filter head according to claim 2, characterised in that The fixing plate (2) has a hidden groove (4) at the position corresponding to the head of the first screw (1) and the second screw (3), and the heads of the first screw (1) and the second screw (3) are set in the hidden groove (4).

5. A downhole water discharge filter head according to claim 2, wherein, The counterweight (6) is made of cast iron.

6. A downhole water discharge filter head according to claim 2, wherein, The counterweight (6) is designed in a hemispherical shape.

7. A downhole drainage filter head according to claim 3, characterized in that, The buoyancy component (12) adopts a hollow structure made of polyethylene material.

8. A downhole water discharge filter head according to claim 1, characterized in that The water inlet (7) is arranged in a ring.

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