Aquarium breeding filter vat

Abstract

The utility model discloses a filter vat for aquarium breeding, and belongs to the field of aquarium breeding. A blow-off pipe is arranged at the bottom of a barrel body, a circulation matching part is arranged at the bottom of an inner cavity of the barrel body, the circulation matching part is provided with an inner cavity used for containing the blow-off pipe, and a through hole extending inwards to the inner cavity is formed in the outer wall of the circulation matching part; the blow-off pipe is movably mounted in an inner cavity of the circulation matching part in a matched manner, and a blow-off communicating hole matched with the through hole is formed in the blow-off pipe; when the movable blow-off pipe enables the blow-off communicating hole to correspond to the through hole in position, the inner cavity of the blow-off pipe is communicated with the inner cavity of the barrel body and is in a blow-off state; when the blowdown communicating hole and the through hole are staggered, the inner cavity of the blowdown pipe is not communicated with the inner cavity of the barrel body and is in a non-blowdown state. According to the utility model, dirt at the bottom can be directly washed without taking out the filter material, so that trouble and labor are saved, the use safety of the blow-off pipe is improved, and the water leakage condition can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aquarium breeding, and more specifically, to an aquarium breeding filter barrel. Background Art

[0002] In the process of aquarium breeding, the control of water quality is particularly important. There are mainly two ways to treat the breeding water: one is to change the water regularly, directly discharge the breeding water containing pollutants through the drain pipe, and add purified water for supplement. This method consumes a large amount of water resources; the other is to filter and recycle the water, and use the filtering equipment to purify the breeding water and then inject it into the breeding pond again. With long-term filtration, a large amount of dirt will accumulate at the bottom of the filter barrel, and it is necessary to regularly clean the dirt deposited in the filter barrel.

[0003] At present, manual cleaning or automatic flushing can generally be used to clean the filter barrel in the industry. For example, the external filter barrel for aquarium disclosed in the patent with the publication number CN211048195U only has an inlet and an outlet for filtration function on the barrel body. When cleaning, the filter media needs to be taken out first and then the barrel body is rinsed, which is time-consuming and laborious, and the user experience is not good. For example, the patent with the publication number CN208726944U discloses a circulating flushing type filtering device for water quality filtration, and the patent with the publication number CN219399158U discloses a backwashing direct-through type grading filter and dirt remover. The above designs set a sewage discharge pipe and a sewage discharge electric valve at the bottom of the filter, which can automatically flush the internal dirt and control the sewage discharge by the on-off of the valve. This design is more time-saving and labor-saving, but it is generally aimed at large-scale sewage treatment environments and is not suitable for directly used in the home aquarium breeding environment, and there is still room for further optimization in the sewage discharge safety. Once the sewage discharge electric valve accidentally opens or fails, such as forgetting to close the valve after sewage discharge, it is easy to cause sewage leakage. Especially for the home environment, once there is a water leak, it will bring great trouble to the daily life of consumers, and improving the drainage safety cannot be ignored. Summary of the Utility Model

[0004] 1. Technical Problems to be Solved by the Utility Model

[0005] In view of the inconvenience of cleaning the dirt at the bottom of the filter barrel in the prior art, the utility model intends to provide an aquarium breeding filter barrel. The filter barrel of this solution is provided with a sewage discharge pipe at the bottom for internal flushing and sewage discharge, which can directly flush the dirt at the bottom without taking out the filter media, saving time and effort, and the use safety of the sewage discharge pipe is improved, which can effectively avoid water leakage.

[0006] 2. Technical Solutions

[0007] To achieve the above object, the technical solution provided by the utility model is as follows:

[0008] The utility model discloses an aquaculture filter barrel, comprising a barrel body, a sewage pipe is arranged at the bottom of the barrel body, the inner end of the sewage pipe extends into the inner cavity of the barrel body, the outer end of the sewage pipe extends to the outside of the barrel body, and the inner end port of the sewage pipe is closed; wherein the inner cavity bottom of the barrel body has a flow matching part, the flow matching part has an inner cavity for accommodating the sewage pipe, and the outer wall of the flow matching part is provided with a through hole extending inwardly to the inner cavity; the sewage pipe is movably installed in the inner cavity of the flow matching part, and the sewage pipe is provided with a sewage connecting hole for matching with the through hole; when the movable sewage pipe makes the sewage connecting hole correspond to the position of the through hole, the inner cavity of the sewage pipe is connected with the inner cavity of the barrel body; when the sewage connecting hole and the through hole are staggered, the inner cavity of the sewage pipe is not connected with the inner cavity of the barrel body.

[0009] This solution controls the connection and disconnection between the inner cavity of the sewage pipe and the inner cavity of the barrel body by setting a flow matching part and utilizing the corresponding or staggered matching of the positions of the two groups of holes. When the two groups of holes are aligned, the sewage connecting hole and the through hole form a through channel connecting the inner cavity of the sewage pipe and the inner cavity of the barrel body, and the flushing water directly flushes the dirt at the bottom of the barrel body and is discharged through the sewage pipe; when the positions of the sewage connecting hole and the through hole are staggered, the inner cavity of the sewage pipe and the inner cavity of the barrel body are in a non-connected state. At this time, the sewage pipe will not discharge water to the outside, and the barrel body is in a normal filtering state. In practice, as one of the designs of the filter barrel, the filter barrel also has a barrel cover that is detachably matched with the barrel body, and the barrel cover is provided with a water inlet pipe and a water outlet pipe. When in use, a filter assembly is placed in the barrel body, and a water inlet channel for water flow is provided in the filter assembly. The water inlet channel extends downward to the lower part of the barrel body, and the water inlet pipe on the barrel cover can be connected with the water inlet channel in the filter assembly, and the water outlet pipe on the barrel cover is connected with the upper part of the inner cavity of the barrel body; under the filtering function, water enters the water inlet pipe and flows directly to the bottom of the inner cavity of the barrel body through the water inlet channel and gradually rises, and is filtered layer by layer from bottom to top through the filter assembly, and then the filtered clean water is discharged through the water outlet pipe. The filter barrel of this scheme can realize the flushing and sewage discharge of the barrel body by adding a sewage pipe. Under the sewage discharge function, the flushing water still directly enters the bottom of the inner cavity of the barrel body through the water inlet pipe and the water inlet channel to flush the dirt accumulated at the bottom. The user takes active action to control it, so that the sewage discharge connecting hole and the through hole are connected to each other before the water can be discharged. After the misalignment, water overflow can be avoided. The operation is convenient, and the switch on and off state is controlled by the user's active action, which is highly safe. Moreover, the sewage pipe is arranged in the circulation matching part, which also alleviates the scouring damage to the sewage pipe caused by water flow during long-term use.

[0010] It should be noted that the design of the sewage pipe in this application can also be applied to non-sewage scenarios, and it is only necessary to be suitable for the drainage function. For example, the filter barrel can adopt the form of top-inlet and bottom-outlet. At this time, a water inlet pipe can be set on the barrel cover and no water outlet pipe is set. An inlet channel may not be provided in the filter assembly either. After the water inlet pipe intakes water, it directly passes through the upper surface of the filter assembly and is filtered layer by layer downward, and the filtered clean water is discharged through the sewage pipe. Similarly, the design of the sewage pipe can also be applied to other drainage scenarios of the aquarium filter barrel, and it is only necessary to be able to control the position of the sewage pipe in the flow cooperation part through activities to realize the change of the on-off state of the sewage pipe.

[0011] As one of the preferred ways of the movable cooperation of the sewage pipe, the sewage pipe is rotationally and movably installed in the inner cavity of the flow cooperation part, and the sewage pipe can be axially pulled and moved in the flow cooperation part. Only after the double actions of pulling and rotation of the sewage pipe can the sewage communication hole correspond to the through hole in position. After the reverse pulling and rotation actions, the sewage communication hole and the through hole are staggered again in position. Such a setting can further improve the drainage safety. Among them, the rotation and pulling actions can be in any order. For example, in the normal filtration state, the sewage communication hole on the sewage pipe and the through hole on the flow cooperation part have a displacement distance in the axial direction and also a displacement angle in the circumferential direction. In practice, the axial pulling can be carried out first to make their axial positions reach the same, and then the circumferential rotation can be carried out to make the sewage communication hole and the through hole completely correspond; or the circumferential rotation can be carried out first to make them only have a front-back distance in the axial direction, and then the pulling action can be carried out to make the sewage communication hole and the through hole completely correspond. Only after such double actions can the sewage passage be realized, further improving the sewage discharge safety and avoiding accidental water leakage.

[0012] To prevent accidental water leakage, further, for the part of the sewage pipe extending into the inner cavity of the barrel, a sealing ring is provided on the outer wall along the circumference. The sealing ring is used to seal the gap between the through hole and the outer wall of the sewage pipe during the pulling and rotation processes of the sewage pipe.

[0013] In practice, it is preferable that at least two sealing portions are provided at intervals along the axial direction on the outer wall of the sewage discharge pipe. Sealing portions are respectively provided at both ends of the sewage discharge communication hole. When the sewage discharge communication hole corresponds to the through hole in position, the position of the through hole is located between the sealing portions at both ends, thereby sealing the gap between the through hole and the outer wall of the sewage discharge pipe. A better design is that at least three sealing portions are provided at intervals along the axial direction on the outer wall of the sewage discharge pipe. Two of the sealing portions are located at both ends of the sewage discharge communication hole. When the sewage discharge pipe is pulled forward / backward in the flow cooperation portion, the position of the through hole is always located between two adjacent sealing portions. In this way, it is ensured that when in the sewage discharge state, that is, when the sewage discharge communication hole and the through hole are completely corresponding, the sealing performance is also maintained between the sewage discharge pipe and the inner wall of the flow cooperation portion, and the water flow can only enter the inside of the sewage discharge pipe and be discharged concentratedly, and will not enter the gap between the sewage discharge pipe and the flow cooperation portion in large amounts; when in the non-sewage discharge state, that is, when the sewage discharge communication hole and the through hole are staggered from each other, the sealing performance is still maintained between the sewage discharge pipe and the inner wall of the flow cooperation portion at this time, preventing a large amount of water from flowing through the through hole and entering the gap between the sewage discharge pipe and the flow cooperation portion.

[0014] To ensure the stable pulling of the sewage discharge pipe, furthermore, a front limiting plate and a rear limiting plate are provided at intervals along the axis on the sewage discharge pipe. The front limiting plate is located outside the barrel body, and the rear limiting plate is located in the inner cavity of the barrel body. The front limiting plate and the rear limiting plate are used to limit the axial pulling displacement of the sewage discharge pipe in the flow cooperation portion, prevent excessive pulling, and ensure that the pulling distance can maintain the corresponding or misaligned state of the sewage discharge communication hole and the through hole.

[0015] In practice, alternatively, for example: the sewage discharge pipe is rotationally and fittingly installed in the inner cavity of the flow cooperation portion. Rotating the sewage discharge pipe can make the sewage discharge communication hole and the through hole correspond or be staggered in position. At this time, the on-off state of the sewage discharge pipe can be controlled only by a rotating action; or, for example: the sewage discharge pipe is slidably and fittingly installed in the inner cavity of the flow cooperation portion. Pulling the sewage discharge pipe can make the sewage discharge communication hole and the through hole correspond or be staggered in position. At this time, the on-off state of the sewage discharge pipe can be controlled only by a pulling action.

[0016] To further streamline the shape design of the barrel body, furthermore, an installation cavity for accommodating the sewage discharge pipe is provided by inward depression at the bottom of the barrel body. When the sewage discharge pipe is in the non-sewage discharge state, it can at least be partially hidden in the installation cavity, thereby effectively streamlining the volume and being more beautiful.

[0017] As a specific design of the sewage pipe, further, the sewage pipe includes a pipe body that is movably engaged with the flow-through mating portion. The outer end of the pipe body also has an outer pipe portion that is connected and communicated. The axial direction of the outer pipe portion intersects with the axial direction of the pipe body. When the sewage pipe is in the sewage discharge state, the outer pipe portion extends outward beyond the installation cavity area. In practice, it is preferable that the outer pipe portion and the pipe body are vertically distributed. And in the normal filtering state, the pipe body is horizontally distributed, and the outer pipe portion is vertically distributed with the port facing upward. This further avoids water overflow. And it can be set that when the outer pipe portion rotates to the horizontal state, the barrel is in the sewage discharge state, which is not only convenient for drainage, but also can directly observe the functional state of the barrel according to the position of the outer pipe portion, which is convenient for users to directly observe and is less likely to forget to close. In practice, an interface can be provided at the end of the outer pipe portion for connecting to an external pipe for drainage.

[0018] Further, the inner end port of the sewage pipe can be closed by a sealing plug, and the sealing plug has an embedded portion that is embedded inward into the inner cavity of the sewage pipe. This is not only convenient for processing and installation, but also can ensure the sealing between the sealing plug and the sewage pipe, preventing water from entering the sewage pipe from the port position and further reducing the erosion damage of the water flow to the sewage pipe.

[0019] To improve the operation convenience, further, a handle is provided at the outer end of the sewage pipe, which is convenient for users to perform the pulling operation. Optionally, one or more through holes can be provided on the flow-through mating portion, and one or more sewage connection holes can be provided on the corresponding sewage pipe. For example, two through holes are symmetrically provided along the circumference on the flow-through mating portion, specifically at both ends in the radial direction, and two sewage connection holes are symmetrically provided along the circumference on the corresponding sewage pipe, specifically at both ends in the radial direction. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the filter barrel in the non-use state in the embodiment;

[0021] Figure 2 For Figure 1 The schematic internal structure diagram in the state;

[0022] Figure 3 It is a schematic structural diagram of the filter barrel in the state where the bottom sewage pipe is pulled outwards in the embodiment;

[0023] Figure 4 For Figure 3 The schematic internal structure diagram in the state;

[0024] Figure 5 It is a schematic structural diagram of the filter barrel in the sewage discharge state in the embodiment;

[0025] Figure 6 For Figure 5 The schematic internal structure diagram in the state;

[0026] Figure 7 Schematic structural diagram of the sewage discharge pipe in the embodiment;

[0027] Figure 8 Front view schematic diagram of the sewage discharge pipe in the embodiment;

[0028] Figure 9 Cross-sectional structural schematic diagram of the sewage discharge pipe in the embodiment.

[0029] Explanation of the reference numerals in the schematic diagram:

[0030] 100, barrel body; 101, installation cavity; 102, filter basket frame; 103, flow-through mating part; 104, through hole;

[0031] 200, barrel cover; 201, water inlet pipe; 202, water outlet pipe;

[0032] 300, sewage discharge pipe; 310, pipe body main body; 311, outer pipe part; 312, handle; 313, sealing ring; 314, sewage connection hole; 315, front limit plate; 316, rear limit plate; 320, closing plug. Specific implementation manner

[0033] To further understand the content of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] The present utility model will be further described below with reference to the embodiments.

[0036] Embodiment

[0037] Combined with Figures 1 - 9, an aquarium filtration bucket according to this embodiment includes a bucket body 100. A sewage discharge pipe 300 is provided at the bottom of the bucket body 100. The inner end of the sewage discharge pipe 300 extends into the inner cavity of the bucket body 100, and the outer end of the sewage discharge pipe 300 extends to the outside of the bucket body 100. The inner end port of the sewage discharge pipe 300 is closed, so that the inner end port of the sewage discharge pipe 300 is not directly communicated with the inner cavity of the bucket body 100; in practice, the bottom position of the bucket body 100 includes the position near the lower region of the bucket body 100. The sewage discharge pipe 300 can be arranged on the bottom wall of the bucket body 100, or the sewage discharge pipe 300 can be arranged at the side wall position near the lower part of the bucket body 100. Combining Figure 2 , Figure 4 and Figure 6 shows that the bottom of the inner cavity of the bucket body 100 has a circulation fitting part 103. For example, the circulation fitting part 103 can be specifically arranged to horizontally extend and distribute on the bottom wall of the bucket body 100. The inner cavity of the circulation fitting part 103 is used to accommodate the sewage discharge pipe 300, and a through hole 104 extending inward to the inner cavity is provided on the outer wall of the circulation fitting part 103; the sewage discharge pipe 300 is movably and fittingly installed in the inner cavity of the circulation fitting part 103, and a sewage discharge communication hole 314 for cooperating with the through hole 104 is provided on the sewage discharge pipe 300; when the movable sewage discharge pipe 300 makes the sewage discharge communication hole 314 correspond to the through hole 104 in position, the inner cavity of the sewage discharge pipe 300 is communicated with the bucket body 100 and is in the sewage discharge state; when the sewage discharge communication hole 314 is staggered from the through hole 104 in position, the inner cavity of the sewage discharge pipe 300 is not communicated with the bucket body 100 and is in the non-sewage discharge state.

[0038] In practice, a bucket cover 200 is detachably and fittingly provided at the upper end of the bucket body 100. A water inlet pipe 201 and a water outlet pipe 202 are provided on the bucket cover 200. A filtration component is placed in the bucket body 100. Specifically, for example, a filtration basket rack 102 is used to fix multiple groups of filtration elements, etc. An inlet channel extending downward to the lower end of the bucket body 100 is provided in the filtration basket rack 102; as Figure 2 and Figure 4 show, the arrow directions in both figures are the flow directions of water flow in the filtration state. After water enters through the water inlet pipe 201, it directly enters the bottom of the bucket body 100 through the inlet channel, and then passes upward through the filtration component and is discharged through the water outlet pipe 202. As Figure 6 shows, the arrow direction is the flow direction of water flow in the sewage discharge state. After water enters through the water inlet pipe 201, it directly enters the bottom of the bucket body 100 through the inlet channel, and then enters the sewage discharge pipe 300 through the through hole 104 and the sewage discharge communication hole 314, and then is discharged through the sewage discharge pipe 300.

[0039] In order to further improve the drainage safety and enhance the user's operating experience, it is preferred that the sewage pipe 300 is rotatably installed in the inner cavity of the circulation fitting part 103, and the sewage pipe 300 can be pulled and moved axially in the circulation fitting part 103. After the sewage pipe 300 is pulled, pulled and rotated, the sewage connecting hole 314 can correspond to the position of the through hole 104. After the reverse pulling, pulling and rotating, the sewage connecting hole 314 and the through hole 104 are offset again.

[0040] In order to adapt to the movable design of the sewage pipe 300 and streamline the volume of the barrel body 100, it is preferred that the bottom of the barrel body 100 is provided with an inwardly recessed installation cavity 101 for accommodating the sewage pipe 300. When the sewage pipe 300 is in a non-sewage discharge state, it can be at least partially hidden in the installation cavity 101, and preferably can be completely hidden in the installation cavity 101. In this way, under normal filtering conditions, the structure of the barrel body 100 is more beautiful and compact.

[0041] Furthermore, in this embodiment, the sewage pipe 300 includes a pipe body 310 that is movably matched with the flow matching part 103, and the outer end of the pipe body 310 also has a connected outer pipe part 311, and the axial direction of the outer pipe part 311 intersects with the axial direction of the pipe body 310. When the sewage pipe 300 is in the sewage discharge state, the outer pipe part 311 extends outward beyond the installation cavity 101 area, and in the non-sewage discharge state, the outer pipe part 311 is preferably completely hidden in the installation cavity 101. In order to facilitate the pulling operation, a handle 312 can be provided at the bottom end of the outer pipe part 311. The end of the outer pipe part 311 can also be provided with a connection port for connecting to an external pipeline for drainage.

[0042] Combination Figure 3 , preferably, the outer tube 311 and the tube body 310 are vertically distributed, the tube body 310 extends horizontally and cooperates with the barrel body 100, and the outer tube 311 is preferably in an upward vertical distribution state in the filtering state. Based on this, when the sewage pipe 300 in this embodiment realizes the sewage discharge function, it is preferred to adopt an activity trajectory of first pulling and then rotating, such as combining Figure 1 , Figure 3 and Figure 5 As shown, in the filtering state, the outer tube portion 311 and the tube body 310 are Figure 1 The middle state is hidden. When it is necessary to discharge sewage, the outer tube part 311 is first pulled out of the installation cavity 101. Figure 3 Then the outer tube portion 311 is rotated to a horizontal state as shown; Figure 5 As shown, at this time, the sewage discharge connecting hole 314 can be connected with the through hole 104, the inner cavity of the sewage discharge pipe 300 is connected with the barrel body 100 in the sewage discharge state, and the outer tube part 311 is first pulled out and then rotated, which not only reduces the size of the installation cavity 101, but also avoids the obstruction of the barrel body 100 during the rotation process. Based on this, combined with Figure 7 and Figure 8As shown in the middle orientation, in this embodiment, the sewage connection hole 314 can be provided at the upper end surface position of the pipe body 310, and the through hole 104 on the flow-through fitting portion 103 is provided on the side wall surface. In the filtering state, the sewage connection hole 314 is located in front of the through hole 104 in the axial direction, and the two are completely staggered in the circumferential direction. First, pull the pipe body 310 outwards so that the sewage connection hole 314 moves outwards to the axial position where the through hole 104 is located, and then rotate the outer pipe portion 311 to the horizontal state. At this time, the sewage connection hole 314 deflects to completely correspond to the through hole 104 to achieve sewage discharge. In practice, the distribution position and the number of settings of the sewage connection hole 314 and the through hole 104 can be adjusted according to the product structure or requirements, which will not be elaborated here. For example, two through holes 104 can be symmetrically arranged along the circumferential direction on the flow-through fitting portion 103, and two sewage connection holes 314 can be symmetrically arranged along the circumferential direction on the sewage pipe 300, etc. As long as the two sets of hole positions can be completely corresponding and completely staggered through the movable sewage pipe 300. For example, it is also possible to set that the sewage pipe 300 is rotated until the outer pipe portion 311 faces downwards to achieve sewage discharge, etc.

[0043] To improve the sealing performance between the sewage pipe 300 and the flow-through fitting portion 103 and reduce the water flow into the gap between the two pipe cavities, further, for the part of the sewage pipe 300 extending into the inner cavity of the barrel 100, a sealing ring 313 is provided along the circumferential direction on its outer wall. The sealing ring 313 is used to seal the gap between the through hole 104 and the outer wall of the sewage pipe 300 during the pulling and rotation processes of the sewage pipe 300. In practice, it is preferably that at least two sealing portions are provided at intervals along the axial direction on the outer wall of the sewage pipe 300. Among them, sealing portions are respectively provided around the two ends of the sewage connection hole 314 along the circumferential direction. When the sewage connection hole 314 corresponds to the through hole 104 in position, the through hole 104 is located between the two sealing portions 313 at both ends. A better design is, for example, as specifically shown in Figure 7 As shown, at least three sealing portions are provided at intervals along the axial direction on the outer wall of the sewage pipe 300. Among them, two sealing portions are provided around the two ends of the sewage connection hole 314 along the circumferential direction, and another sealing portion is provided around the outer wall of the sewage pipe 300 along the circumferential direction. When the sewage pipe 300 is pulled in place in the flow-through fitting portion 103 either forward or backward, the through hole 104 is located between two adjacent sealing portions. In practice, each sealing portion can adopt an independent sealing ring, or a single sealing ring can have multiple sealing portions, such as a special-shaped sealing ring structure, etc. And it is more preferably that sealing portions are provided around the periphery of the sewage connection hole 314 to Figure 7 In terms of the left-right axial direction in the figure, from left to right, it can successively include a first sealing portion formed by a first sealing ring, a second sealing portion, and a third sealing portion. The sewage connection hole 314 is located between the second and third sealing portions. Among them, the second sealing portion and the third sealing portion are the two end portions of the same sealing ring, and this sealing ring is a special-shaped sealing ring. In addition to having sealing portions at both ends, in the width direction of the sewage connection hole 314 ( Figure 8There are also sealing parts on both sides (in the inner and outer directions perpendicular to the paper surface) to achieve sealing on all sides of the sewage discharge connecting hole 314. In the filtering state, the position of the through hole 104 corresponds to between the first and second sealing parts. When discharging sewage, the sewage pipe 300 is pulled outward, and at this time, the position of the through hole 104 corresponds to between the second and third sealing parts.

[0044] Furthermore, in order to ensure the stability and accuracy of the front and rear pulling, the sewage pipe 300 is provided with a front limit plate 315 and a rear limit plate 316 at intervals along the axial direction, which can be specifically arranged at both ends of the axial direction of the tube body 310, the front limit plate 315 is located outside the barrel body 100, and the rear limit plate 316 is located in the inner cavity of the barrel body 100, and can be selectively located outside the flow matching portion 103, such as Figure 2 As shown, the pipe body 310 can be selected to extend through the entire inner cavity of the circulation fitting portion 103. In the filtering state, before the sewage pipe 300 is pulled outward, the inner end of the pipe body 310 extends beyond the circulation fitting portion 103. At this time, the rear limit plate 316 can be located outside the port on the inner side of the circulation fitting portion 103. The front limit plate 315 and the rear limit plate 316 are used to limit the axial pulling displacement of the sewage pipe 300 in the circulation fitting portion 103. When the sewage pipe 300 is pulled outward until the rear limit plate 316 abuts against the end on the inner side of the circulation fitting portion 103, the sewage communication hole 314 and the through hole 104 only have a circumferential angle position deviation, and the axial length position is basically the same; when the sewage pipe 300 is pushed inward in the opposite direction until the front limit plate 315 abuts against the outer wall of the barrel body 100, the sewage communication hole 314 and the through hole 104 can be completely staggered in the axial length position. Similarly, it is also possible that the tube body 310 does not penetrate the entire inner cavity of the circulation fitting part 103, but always moves in the inner cavity of the circulation fitting part 103. At this time, the rear limit plate 316 is also located in the inner cavity of the circulation fitting part 103, and a limit part that cooperates with the rear limit plate 316 may be correspondingly provided in the inner cavity of the circulation fitting part 103. When the tube body 310 moves to the point where the rear limit plate 316 abuts against the limit part, the axial pulling of the tube body 310 is in place.

[0045] Furthermore, the inner end of the sewage pipe 300 can be sealed by a sealing plug 320. The sealing plug 320 has an embedded part embedded in the inner cavity of the sewage pipe 300. The embedded part and the inner wall of the sewage pipe 300 are sealed. The embedded part can be made of rubber material, etc., directly in sealing contact with the inner wall of the sewage pipe 300, or a sealing ring can be provided between the embedded part and the inner wall of the sewage pipe 300. Figure 9 As shown, this facilitates the processing and installation of the sewage pipe 300 and can also ensure the sealing of the inner end port of the sewage pipe 300 to prevent water from entering the sewage pipe 300 from there.

[0046] Based on the above design concept, the following implementation schemes can also be selected in practice. For example, the sewage discharge pipe 300 is rotatably and fittingly installed in the inner cavity of the flow-through fitting part 103. Rotating the sewage discharge pipe 300 can make the sewage discharge communication hole 314 correspond to or stagger from the through hole 104. At this time, the corresponding change in the position between the sewage discharge communication hole 314 and the through hole 104 can be controlled by rotation, so as to control the on-off state between the sewage discharge pipe 300 and the inner cavity of the barrel body 100. For the rest of the design, refer to the above scheme. Another example: The sewage discharge pipe 300 is slidably and fittingly installed in the inner cavity of the flow-through fitting part 103. Pulling the sewage discharge pipe 300 can make the sewage discharge communication hole 314 correspond to or stagger from the through hole 104. At this time, the corresponding change in the position between the sewage discharge communication hole 314 and the through hole 104 can be controlled by the pulling action, so as to control the on-off state between the sewage discharge pipe 300 and the inner cavity of the barrel body 100. For the rest of the design, refer to the above scheme.

[0047] In this embodiment, adding the sewage discharge pipe 300 can directly flush the dirt at the bottom with the water inlet pipe 201 without removing the internal filter assembly, and the drainage process requires the user to actively operate to control the on-off of the switch, which improves the safety and avoids accidental water leakage. Moreover, by observing the position and angular distribution pattern of the sewage discharge pipe 300 outside the barrel body 100, such as whether it extends beyond the installation cavity 101 of the barrel body 100, and whether the outer pipe part 311 is in a vertical or horizontal state, etc., it can be known whether it is in the filtering or sewage discharge state, and it is less likely to occur situations such as user misoperation or forgetting to return to the original position, further improving the safety.

[0048] The above schematically describes the present invention and its implementation manners. This description is not restrictive, but only one of the implementation manners of the present invention, and the actual situation is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An aquaculture filter barrel, comprising a barrel body (100), characterized in that: A sewage pipe (300) is provided at the bottom of the barrel body (100), the inner end of the sewage pipe (300) extends into the inner cavity of the barrel body (100), and the outer end of the sewage pipe (300) extends to the outside of the barrel body (100), and the inner end of the sewage pipe (300) is closed; The inner cavity bottom of the barrel body (100) has a flow-through fitting portion (103), the flow-through fitting portion (103) has an inner cavity for accommodating a sewage discharge pipe (300), and a through hole (104) extending inwardly to the inner cavity is provided on the outer wall of the flow-through fitting portion (103); the sewage discharge pipe (300) is movably mounted in the inner cavity of the flow-through fitting portion (103), and a sewage discharge communication hole (314) for cooperating with the through hole (104) is provided on the sewage discharge pipe (300); When the movable sewage pipe (300) makes the sewage discharge communication hole (314) correspond to the through hole (104), the inner cavity of the sewage pipe (300) is connected to the inner cavity of the barrel body (100); when the sewage discharge communication hole (314) and the through hole (104) are misaligned, the inner cavity of the sewage pipe (300) is not connected to the inner cavity of the barrel body (100).

2. The aquaculture filter barrel according to claim 1, characterized in that: The sewage pipe (300) is rotatably mounted in the inner cavity of the circulation fitting portion (103), and the sewage pipe (300) can be pulled and moved in the circulation fitting portion (103) along the axial direction. After the sewage pipe (300) is pulled and rotated, the sewage connecting hole (314) can correspond to the position of the through hole (104). After the sewage pipe (300) is pulled and rotated in the opposite direction, the sewage connecting hole (314) and the through hole (104) are offset again.

3. The aquaculture filter barrel according to claim 2, characterized in that: The portion of the sewage pipe (300) extending into the inner cavity of the barrel body (100) has a sealing ring (313) provided on its outer wall along the circumferential direction. The sealing ring (313) is used to seal the gap between the through hole (104) and the outer wall of the sewage pipe (300) during the process of pulling and rotating the sewage pipe (300).

4. The aquaculture filter barrel according to claim 2, characterized in that: At least two sealing portions are provided at intervals along the axial direction on the outer wall of the sewage discharge pipe (300), wherein sealing portions are provided at both ends of the sewage discharge communication hole (314), and when the sewage discharge communication hole (314) corresponds to the position of the through hole (104), the through hole (104) is located between the sealing portions at both ends; or: At least three sealing portions are provided on the outer wall of the sewage discharge pipe (300) at intervals in the axial direction, wherein two sealing portions are located at both ends of the sewage discharge connecting hole (314), and when the sewage discharge pipe (300) is pulled into place in the forward / reverse direction in the flow matching portion (103), the through hole (104) is located between two adjacent sealing portions.

5. The aquaculture filter barrel according to claim 2, characterized in that: A front limit plate (315) and a rear limit plate (316) are provided on the sewage pipe (300) at intervals along the axial direction. The front limit plate (315) is located outside the barrel body (100), and the rear limit plate (316) is located in the inner cavity of the barrel body (100). The front limit plate (315) and the rear limit plate (316) are used to limit the axial pulling displacement of the sewage pipe (300) in the flow fitting part (103).

6. The aquaculture filter barrel according to claim 1, characterized in that: The sewage pipe (300) is installed in the inner cavity of the circulation fitting part (103) by rotation, and the sewage pipe (300) can be rotated to make the sewage connection hole (314) correspond to or stagger the position of the through hole (104); or, the sewage pipe (300) is installed in the inner cavity of the circulation fitting part (103) by pulling and pulling, and the sewage pipe (300) can be pulled and pulled to make the sewage connection hole (314) correspond to or stagger the position of the through hole (104).

7. An aquaculture filter barrel according to any one of claims 1 to 6, characterized in that: The bottom of the barrel body (100) is provided with an inwardly recessed installation cavity (101) for accommodating a sewage discharge pipe (300); when the sewage discharge pipe (300) is in a non-sewage discharge state, it can be at least partially hidden in the installation cavity (101).

8. The aquaculture filter barrel according to claim 7, characterized in that: The sewage discharge pipe (300) comprises a pipe body (310) movably matched with the flow matching part (103); the outer end of the pipe body (310) also has a connected outer pipe part (311); the axial direction of the outer pipe part (311) intersects with the axial direction of the pipe body (310); when the sewage discharge pipe (300) is in a sewage discharge state, the outer pipe part (311) extends outward beyond the installation cavity (101) area.

9. An aquaculture filter barrel according to any one of claims 1 to 6, characterized in that: The inner end port of the sewage pipe (300) is closed by a closing plug (320), and the closing plug (320) has an embedded portion embedded inwardly into the inner cavity of the sewage pipe (300).

10. An aquaculture filter barrel according to any one of claims 1 to 6, characterized in that: The outer end of the sewage pipe (300) is provided with a handle (312); or / and, the outer end of the sewage pipe (300) is also provided with a connection port for connecting to an external pipeline; or / and, two through holes (104) are symmetrically provided on the flow matching part (103) along the circumferential direction, and two sewage connection holes (314) are correspondingly symmetrically provided on the sewage pipe (300) along the circumferential direction.

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