Recharge wellhead filtering device easy to disassemble

Abstract

The invention discloses a recharge wellhead filtering device easy to disassemble, and relates to the technical field of underground water engineering, the recharge wellhead filtering device easy to disassemble comprises a filtering tank, a positioning ring, a filtering mechanism and a driving mechanism used for driving the filtering mechanism to move and extend out of a tank opening of the filtering tank are arranged in the filtering tank, and the positioning ring is fixedly arranged on the inner wall of the filtering tank; the driving mechanism is fixedly installed on the positioning ring, the filtering mechanism is installed on the driving mechanism, two positioning rods are fixedly arranged at the top of the positioning ring, and the filtering mechanism comprises four lantern rings, three pairs of arc-shaped abutting blocks, a physical filtering layer, a biological filtering layer and a chemical filtering layer. Through cooperation of the driving mechanism and the filtering mechanism, a physical filtering layer, a biological filtering layer and a chemical filtering layer can be conveniently cleaned and replaced in time, and a mode of moving to a tank opening of the filtering tank for replacement is more convenient for a worker to judge whether a filter element needs to be replaced or not, and is more convenient for the worker to operate; and the risk of blockage of the recharge well is reduced while the recharge water quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of groundwater engineering, and in particular to an easily disassembled reinjection wellhead filtering device. Background Art

[0002] The large-scale exploitation of groundwater resources has caused a serious loss of groundwater resources. More and more countries in the world use recharge wells to recharge groundwater resources. When recharging groundwater, in order to prevent groundwater pollution and reduce the problem of recharge well blockage, tap water with good water quality is often used as the recharge water source. However, when tap water is transported to the wellhead through pipelines, it is often mixed with many impurities. If these impurities are not treated, it is likely to cause groundwater pollution and increase the possibility of recharge well blockage.

[0003] However, in current projects, the delivered tap water is usually only used directly for reinjection, and it is not processed at the wellhead of the reinjection well, or the existing filtering device is used to simply intercept impurities. The intercepted impurities will remain in the filtering device, and people are required to manually clean the intercepted impurities regularly, which increases labor intensity and is time-consuming and laborious. In addition, the filter net will become clogged after long-term use, causing many inconveniences to the use.

[0004] In view of the above problems, an easily disassembled reinjection wellhead filtering device is proposed. Summary of the invention

[0005] The object of the present invention is to provide an easily disassembled reinjection wellhead filtering device to solve the above-mentioned problem.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A recharging wellhead filter device that is easy to disassemble comprises a filter tank, wherein a positioning ring, a filtering mechanism and a driving mechanism for driving the filtering mechanism to move and extend out of the filter tank mouth are arranged inside the filter tank, the positioning ring is fixedly arranged on the inner wall of the filter tank, the driving mechanism is fixedly arranged on the positioning ring, the filtering mechanism is installed on the driving mechanism, two positioning rods are fixedly arranged on the top of the positioning ring, the filtering mechanism comprises four collars, three pairs of arc-shaped resistance blocks, a physical filter layer, a biological filter layer and a chemical filter layer, the four collars are sequentially sleeved on the positioning rods, the collar located at the bottom is fixedly connected to the two positioning rods, and the remaining collars are axially sealed and slidably connected to the two positioning rods, all the arc-shaped resistance blocks are respectively sleeved on the two positioning rods, and the three pairs of arc-shaped resistance blocks are respectively located between two adjacent collars, each pair of the arc-shaped resistance blocks are symmetrically arranged, a slot is formed between two adjacent collars, and the physical filter layer, the biological filter layer and the chemical filter layer are sequentially inserted into the corresponding slots from top to bottom.

[0007] As a preferred embodiment of the present invention, the driving mechanism includes two air bag bags, an air pipe and an air pump. The two air bag bags are symmetrically arranged on both sides of the top of the positioning ring, and the upper and lower ends of the two air bag bags are respectively fixedly connected to the bottom ring and the positioning pipe. A cavity is opened inside the positioning ring, and a plurality of connecting ports respectively connected to the two air bag bags are opened on the positioning ring. The air pump is installed outside the filter tank, one end of the air pipe is connected to the output end of the air pump, and the other end of the air pipe passes through the filter tank and the positioning ring in sequence and then connects to the cavity.

[0008] As a preferred solution of the present invention, all the outer walls of the sleeve rings are fixedly connected with sealing rubber rings, and all the sealing rubber rings are in conflict with the inner wall of the filter tank.

[0009] As a preferred solution of the present invention, sliding grooves are provided inside the two positioning rods, and sliding rods are axially sealed and slidably connected in all the sliding grooves. The bottoms of all the sliding rods are fixedly connected to the top of the positioning ring. A top cover is provided on the top of the filter tank, and the top cover is sleeved on the two positioning rods. External threads are provided on the outer walls of the top ends of the two positioning rods and are threadedly connected with nuts, and all the nuts are located above the top cover.

[0010] As a preferred solution of the present invention, the outer walls at the top ends of the two positioning rods are threadedly connected with limiting rings for limiting the top cover, the top ends of the limiting rings are flush with the mouth of the filter tank, and the top cover is located at the top ends of the limiting rings.

[0011] As a preferred solution of the present invention, two magnetic plates are provided at the upper and lower ends of all the arc-shaped abutment blocks, and all the collars are magnetically adsorbed to adjacent magnetic plates.

[0012] As a preferred solution of the present invention, a protective cover is connected between two adjacent airbag bags, and the two positioning rods are respectively located inside the two protective covers.

[0013] As a preferred solution of the present invention, a water inlet connected to an external water pipe is provided on one side of the filter tank, and a water outlet connected to a recharging well is provided at the bottom of the filter tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can filter the recharge water source physically, biologically and chemically through the setting of the filtering mechanism, realize triple filtration of the recharge water source, and achieve the purpose of filtering the recharge water source at the wellhead, thereby ensuring to the greatest extent that the recharge water source has good water quality, and can effectively improve the quality of the recharge water and improve the recharge effect. Through this technology, it can be ensured that the water quality of the recharge water source is well improved, thereby achieving the purpose of protecting precious groundwater resources and significantly slowing down the occurrence of recharge well blockage.

[0015] 2. The present invention can facilitate timely cleaning and replacement of the physical filter layer, biological filter layer and chemical filter layer through the cooperation of the driving mechanism and the filtering mechanism, and the method of moving to the filter tank mouth for replacement makes it easier for staff to judge whether the filter element needs to be replaced, and is also more convenient for staff to operate. By replacing the filter element, the problem of blockage caused by excessive accumulation of impurities is effectively avoided, ensuring the long-term high-flow operation of the recharge well, improving the recharge water quality while also reducing the risk of blockage in the recharge well.

[0016] 3. The present invention can adsorb and fix two adjacent rings by setting a magnetic plate, so as to clamp and fix the filter element between the two, so as to avoid the problem that the filter element increases in weight when it is impacted by water or too many impurities adsorbed inside, thereby preventing it from falling out of the slot. It can be seen that the thickness of the filter element should be greater than the height of the arc-shaped resistance block; further, the ring can be moved up along the positioning rod and then opened, which makes it easier to remove and replace the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 The present invention provides an overall structural schematic diagram of an easily disassembled reinjection wellhead filtering device; Figure 2 The cross-sectional structure diagram of the filter tank provided by the present invention Figure 1 ; Figure 3 The present invention provides Figure 2 A magnified view of the structure at A; Figure 4 The cross-sectional structure diagram of the filter tank provided by the present invention Figure 2 ; Figure 5 The present invention provides Figure 3 A magnified view of the structure at B; Figure 6 The present invention provides Figure 3 A magnified view of the structure at C; Figure 7 A schematic diagram of the connection structure between the top cover and the positioning rod is provided for the present invention; Figure 8 A schematic diagram of the connection structure between the driving mechanism and the filtering mechanism is provided for the present invention; Fig. 9A top cross-sectional view of a driving mechanism is provided for the present invention; Fig.10 A partial structural schematic diagram of a driving mechanism is provided for the present invention.

[0019] The numbers in the figure represent the following: 1. Filter tank; 2. Positioning ring; 3. Filter mechanism; 4. Driving mechanism; 5. Positioning rod; 6. Top cover; 7. Nut; 8. Water inlet; 9. Water outlet; 31. Ring; 32. Arc-shaped resistance block; 33. Physical filter layer; 34. Biological filter layer; 35. Chemical filter layer; 36. Sealing rubber ring; 37. Magnetic plate; 41. Air bag; 42. Air pipe; 43. Air pump; 44. Cavity; 45. Connecting port; 46. Protective cover; 51. Slide groove; 52. Slide rod; 53. Limiting ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 - Fig.10 As shown, the present invention provides an easily disassembled reinjection wellhead filtering device, comprising a filtering tank 1, wherein a positioning ring 2, a filtering mechanism 3 and a driving mechanism 4 for driving the filtering mechanism 3 to move out of the tank mouth of the filtering tank 1 are arranged inside the filtering tank 1, the positioning ring 2 is fixedly arranged on the inner wall of the filtering tank 1, the driving mechanism 4 is fixedly installed on the positioning ring 2, the filtering mechanism 3 is installed on the driving mechanism 4, two positioning rods 5 are fixedly arranged on the top of the positioning ring 2, the filtering mechanism 3 comprises four sleeve rings 31, three pairs of arc-shaped abutment blocks 32, a physical filtering layer 33, a biological filtering layer 34 and a chemical filtering layer 35, the four sleeve rings 31 are sequentially sleeved on the positioning rods 5, The ring 31 at the bottom is fixedly connected to the two positioning rods 5, and the remaining rings 31 are axially sealed and slidably connected to the two positioning rods 5. All arc-shaped resistance blocks 32 are respectively sleeved on the two positioning rods 5, and three pairs of arc-shaped resistance blocks 32 are respectively located between two adjacent rings 31. Each pair of arc-shaped resistance blocks 32 are symmetrically arranged, and a slot is formed between two adjacent rings 31. The physical filter layer 33, the biological filter layer 34 and the chemical filter layer 35 are inserted into the corresponding slots from top to bottom.

[0022] One side of the filter tank 1 is provided with a water inlet 8 connected to an external water pipe, and the bottom of the filter tank 1 is provided with a water outlet 9 connected to a recharging well. Before recharging groundwater, the water inlet 8 of the filter tank 1 is connected to the external water pipe, and the water outlet 9 is connected to the recharging well, so that the external tap water enters the recharging well and is first filtered by the filtering mechanism 3. Since the main factors affecting the groundwater quality and the blockage of the recharging well are physical, biological and chemical factors, the physical filtration target, the biological filtration target and the chemical filtration target are first determined, and then the corresponding filter materials are used to respectively make the physical filtration layer 33, the biological filtration layer 34 and the chemical filtration layer 35, so as to filter the recharging water source physically, biologically and chemically, realize the triple filtration of the recharging water source, realize the purpose of filtering the recharging water source at the wellhead, maximize the guarantee that the recharging water source has good water quality, can effectively improve the quality of the recharging water, and improve the recharging effect. Through this technology, it can be ensured that the water quality of the recharging water source is well improved, so as to achieve the purpose of protecting the precious groundwater resources and significantly slowing down the occurrence of recharging well blockage.

[0023] Furthermore, in order to facilitate the disassembly and replacement of the physical filter layer 33, the biological filter layer 34 and the chemical filter layer 35, a driving mechanism 4 is provided, and the driving mechanism 4 cooperates with the filter mechanism 3 to achieve the rapid removal and replacement of the above-mentioned filter element, the biological filter layer 34 and the chemical filter layer 35 (hereinafter collectively referred to as the filter element). The driving mechanism 4 includes two air bag bags 41, an air supply pipe 42 and an air pump 43. The two air bag bags 41 are symmetrically arranged on both sides of the top of the positioning ring 2, and the upper and lower ends of the two air bag bags 41 are respectively fixedly connected to the bottom ring 31 and the positioning pipe. A cavity 44 is provided inside the positioning ring 2, and a plurality of connecting ports 45 are provided on the positioning ring 2, which are respectively connected to the two air bag bags 41. The air pump 43 is installed on the outside of the filter tank 1, and one end of the air supply pipe 42 is connected to the output end of the air pump 43, and the other end of the air supply pipe 42 passes through the filter tank 1 and the positioning ring 2 in sequence and then connects to the cavity 44.

[0024] The outer walls of all the sleeve rings 31 are fixedly connected with sealing rubber rings 36, and all the sealing rubber rings 36 are in conflict with the inner wall of the filter tank 1. The sealing performance is improved to prevent the water entering the filter tank 1 from being discharged without being purified by the filter mechanism 3.

[0025] A slide groove 51 is provided inside the two positioning rods 5, and a slide rod 52 is axially sealed and slidably connected in all the slide grooves 51. The bottoms of all the slide rods 52 are fixedly connected to the top of the positioning ring 2. A top cover 6 is provided on the top of the filter tank 1, and the top cover 6 is sleeved on the two positioning rods 5. The outer walls of the top ends of the two positioning rods 5 are provided with external threads and are threadedly connected with nuts 7. All nuts 7 are located above the top cover 6.

[0026] The outer walls at the top ends of the two positioning rods 5 are both threadedly connected with limiting rings 53 for limiting the top cover 6 . The top ends of the limiting rings 53 are flush with the mouth of the filter tank 1 , and the top cover 6 is located at the top ends of the limiting rings 53 .

[0027] The air pump 43 is started, and the air pump 43 delivers external gas to the cavity 44 inside the positioning ring 2 through the air delivery pipe 42. Then the gas is diverted to the inside of the two air bags 41 through a plurality of connecting ports 45, so that the two air bags 41 are filled with gas and expand. When the air bags 41 expand, they can push the ring 31 fixedly connected to the air bags 41 to move and rise along the inner wall of the filter tank 1. When the ring 31 at the bottom moves and rises, it can drive other rings 31 located above it, as well as the physical body placed between two adjacent rings 31. The filter layer 33, the biological filter layer 34 and the chemical filter layer 35 move upward. Since the collar 31 at the bottom is fixedly connected to the two positioning rods 5, when the collar 31 moves upward, it can drive the positioning rods 5 fixed thereto to move upward together. When the positioning rods 5 move upward, they can slide along the axial sealing of the sliding outer wall. When the two positioning rods 5 move upward, they first drive the top cover 6 fixed at the top thereof to move upward to detach from the mouth of the filter tank 1, thereby opening the filter tank 1. At this time, the filtering situation of the filter mechanism 3 can be observed through the pipe mouth of the filter tank 1. If it is necessary to replace or remove it, the air bag 41 continues to push the collar 31, that is, the positioning rod 5, upward until the collar 31 moves and is exposed to the mouth of the filter tank 1. At this time, the staff can extract the physical filter layer 33, the biological filter layer 34 and the chemical filter layer 35 from the slots according to the usage, or take them out separately, and insert the new physical filter layer 33, the biological filter layer 34 and the chemical filter layer 35 into the slots, so as to ensure that the long-term filtration can still achieve a good filtration effect by replacing the filter element. The cooperation between the driving mechanism 4 and the filtering mechanism 3 can facilitate the timely cleaning and replacement of the physical filter layer 33, the biological filter layer 34 and the chemical filter layer 35, and the method of moving to the mouth of the filter tank 1 for replacement is more convenient for the staff to judge whether the filter element needs to be replaced, and it is also more convenient for the staff to operate. By replacing the filter element, the problem of blockage caused by excessive accumulation of impurities is effectively avoided, ensuring the long-term high-flow operation of the reinjection well, improving the reinjection water quality and reducing the risk of blockage of the reinjection well.

[0028] The nut 7 and the limiting ring 53 are provided to limit and fix the position of the top cover 6 , and the opening or adjustment of the top cover 6 is also convenient.

[0029] Two magnetic plates 37 are disposed at the upper and lower ends of all arc-shaped abutting blocks 32 , and all collars 31 are magnetically attracted to adjacent magnetic plates 37 .

[0030] By setting the magnetic plate 37, the two adjacent rings 31 can be adsorbed and fixed, so that the filter element between the two can be clamped and fixed, to prevent the filter element from increasing in weight when it is impacted by water or too many impurities adsorbed inside it, thereby preventing the filter element from falling out of the slot. It can be seen that the thickness of the filter element should be greater than the height of the arc-shaped resistance block 32; further, the ring 31 can be moved up along the positioning rod 5 and then opened, which makes it easier to remove and replace the filter element.

[0031] A protective cover 46 is connected between two adjacent airbag bags 41 , and the two positioning rods 5 are respectively located inside the two protective covers 46 , so as to protect the connection between the two positioning rods 5 and the two sliding rods 52 .

[0032] The protection scope of the application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the application within the essence and protection scope of the application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the application.

Claims

1. An easily disassembled reinjection wellhead filtration device, comprising a filter tank (1), characterized in that: The filter tank (1) is provided with a positioning ring (2), a filtering mechanism (3) and a driving mechanism (4) for driving the filtering mechanism (3) to move and extend out of the tank mouth of the filter tank (1); the positioning ring (2) is fixedly arranged on the inner wall of the filter tank (1); the driving mechanism (4) is fixedly mounted on the positioning ring (2); the filtering mechanism (3) is mounted on the driving mechanism (4); two positioning rods (5) are fixedly arranged on the top of the positioning ring (2); the filtering mechanism (3) comprises four sleeve rings (31), three pairs of arc-shaped abutment blocks (32), a physical filtering layer (33), a biological filtering layer (34) and a chemical filtering layer (35); the four sleeve rings (31) are sleeved on the positioning rods (5) in sequence; The collar (31) at the bottom is fixedly connected to the two positioning rods (5), and the remaining collars (31) are all axially sealed and slidably connected to the two positioning rods (5). All the arc-shaped abutment blocks (32) are respectively sleeved on the two positioning rods (5), and three pairs of arc-shaped abutment blocks (32) are respectively located between two adjacent collars (31). Each pair of the arc-shaped abutment blocks (32) are symmetrically arranged, and a slot is formed between two adjacent collars (31). The physical filter layer (33), the biological filter layer (34) and the chemical filter layer (35) are sequentially inserted into the corresponding slots from top to bottom.

2. The easily disassembled reinjection wellhead filtering device according to claim 1 is characterized in that: The driving mechanism (4) comprises two airbag bags (41), an air delivery pipe (42) and an air pump (43). The two airbag bags (41) are symmetrically arranged on both sides of the top of the positioning ring (2), and the upper and lower ends of the two airbag bags (41) are respectively fixedly connected to the bottom ring (31) and the positioning pipe. A cavity (44) is provided inside the positioning ring (2). The positioning ring (2) is provided with a plurality of communication ports (45) respectively connected to the two airbag bags (41). The air pump (43) is installed outside the filter tank (1). One end of the air delivery pipe (42) is connected to the output end of the air pump (43), and the other end of the air delivery pipe (42) passes through the filter tank (1) and the positioning ring (2) in sequence and then connects to the cavity (44).

3. The easily disassembled reinjection wellhead filtering device according to claim 1 is characterized in that: The outer walls of all the sleeve rings (31) are fixedly connected with sealing rubber rings (36), and all the sealing rubber rings (36) are in contact with the inner wall of the filter tank (1).

4. The easily disassembled reinjection wellhead filtering device according to claim 1 is characterized in that: The two positioning rods (5) are provided with a slide groove (51) inside, and the slide grooves (51) are all axially sealed and slidably connected with a slide rod (52), and the bottoms of all the slide rods (52) are fixedly connected to the top of the positioning ring (2). The top of the filter tank (1) is provided with a top cover (6), and the top cover (6) is sleeved on the two positioning rods (5). The top outer walls of the two positioning rods (5) are provided with external threads and are threadedly connected with nuts (7), and all the nuts (7) are located above the top cover (6).

5. The easily disassembled reinjection wellhead filtering device according to claim 1 is characterized in that: A limiting ring (53) for limiting the position of the top cover (6) is threadedly connected to the outer wall at the top end of the two positioning rods (5); the top end of the limiting ring (53) is flush with the tank opening of the filter tank (1), and the top cover (6) is located at the top end of the limiting ring (53).

6. The easily disassembled reinjection wellhead filtering device according to claim 1 is characterized in that: Two magnetic plates (37) are provided at the upper and lower ends of all the arc-shaped abutment blocks (32), and all the collars (31) are magnetically adsorbed to adjacent magnetic plates (37).

7. The easily disassembled reinjection wellhead filtering device according to claim 2 is characterized in that: A protective cover (46) is connected between two adjacent airbag bags (41), and the two positioning rods (5) are respectively located inside the two protective covers (46).

8. The easily disassembled reinjection wellhead filtering device according to claim 2 is characterized in that: A water inlet (8) connected to an external water pipe is provided on one side of the filter tank (1), and a water outlet (9) connected to a recharging well is provided at the bottom of the filter tank (1).

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