A filter water purifying device for an ornamental fish tank

Abstract

The application discloses a filter and purifier for an ornamental fish tank and belongs to the technical field of filter and purifier. The filter and purifier for the ornamental fish tank comprises a fish tank, a shell is fixedly connected to the outside of the fish tank, a cavity one and a cavity two are sequentially arranged on the inside of the shell from bottom to top, a rotating shaft is rotationally connected to the inside of the shell and the inside of the cavity one, and an extension rod is slidably connected to the upper portion of the rotating shaft and the inside of the cavity one. When the water in the fish tank needs to be cleaned, the water pump extracts the water in the fish tank through the flexible hose, the extension rod moves left and right in the fish tank to improve the water suction range of the flexible hose, the extrusion rod moves along the serpentine slide on the upper portion of the guide plate to make the extension rod swing forward and backward while moving forward and backward in the fish tank, and the water suction range of the flexible hose is further improved. When the sewage falls above the inclined blocks, the solid impurities in the sewage fall into the multiple groups of openings due to gravity, so that the filter sheet is prevented from being blocked.

Description

Technical Field

[0001] This invention belongs to the field of water filtration and purification technology, specifically relating to a water filtration and purification device for an ornamental fish tank. Background Technology

[0002] As people's living standards improve, ornamental fish have become popular pets in many homes. However, for many owners, maintaining water quality remains a challenging problem. The key to keeping ornamental fish is "keeping the fish means keeping the water." The aquarium is a closed ecosystem. Fish excrement, uneaten food, and other organic waste continuously produce toxic substances such as ammonia and nitrite after decomposition. Traditional water changes are not only time-consuming and laborious, but frequent water changes can also cause drastic fluctuations in water quality, leading to stress and even affecting the fish's survival.

[0003] Chinese Patent CN219297304U, published on July 4, 2023, discloses a filtration and purification device for ornamental fish tanks, including a base plate, a tank body, and a tank cover. The tank body is located in the middle of the top of the base plate, and the top of the tank body is covered by the tank cover. An inner cylinder is located near the bottom of the tank body, and a water purification box is inserted into the inner cylinder. The water purification box has three storage chambers, each containing a drawer. The three drawers have through holes for a purification layer, an adsorption layer, and an oil-discharging layer, respectively. Water flow holes are provided on the inner wall of the water purification box, and a drain hole is provided in the middle of the lower inner wall of the inner cylinder. The inner cylinder is connected to the tank cover by two connecting rods, and two handles are connected to the side of the tank cover. When the above device is in operation, the cleaning area inside the fish tank is relatively small, leaving a large amount of sediment at the bottom of the fish tank that cannot be effectively cleaned. Furthermore, solid impurities can clog the filter screen when passing through it, thus affecting the filtration effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a water filtration and purification device for ornamental fish tanks, solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides a filtration and water purification device for an ornamental fish tank, including a fish tank, a shell fixedly connected to the outside of the fish tank, and a cavity one and a cavity two sequentially formed from bottom to top on the inner side of the shell. A rotating shaft is rotatably connected to the inner side of the housing and inside cavity one. An extension rod is slidably connected above the rotating shaft and inside cavity one. A water intake port is provided on the outer side of the extension rod and inside the aquarium. A water pump is mounted on top of the housing, and the water outlet of the water pump communicates with cavity two. A telescopic hose is mounted on the pump's suction end, and the telescopic hose is fixedly connected above the extension rod and communicates with the water intake port. A guide plate is fixedly connected to the inner side of the housing and at the bottom of cavity one. A guide plate is fixedly connected below the extension rod and inside the guide plate. The device includes a compression rod, a motor mounted on the outer side of the housing, a reciprocating screw mounted on the output end of the motor, the reciprocating screw passing through the interior of cavity one, push plates threadedly connected to the outer side of the reciprocating screw and on both sides of the compression rod, an inclined block fixedly connected to the inner side of the housing and the inner side of cavity one, multiple openings above the inclined block, a filter assembly mounted between the inclined block and the housing, a drainer mounted on the inner side of the housing and the lower inner side of cavity two, a drain outlet opened between the housing and the fish tank, and the outlet of the drainer connected to the drain outlet.

[0006] Furthermore, the filter assembly includes a mounting plate, which is fixedly connected between the inclined block and the housing. Multiple sets of filter sheets are slidably connected above the mounting plate, and an extraction plate is fixedly connected to the outside of the filter sheets and the outside of the housing.

[0007] Furthermore, a serpentine slide is provided above the guide plate, the extrusion rod is slidably connected to the inside of the serpentine slide, and the push plate is in contact with the extrusion rod.

[0008] Furthermore, a protrusion is fixedly connected to the right side of the inclined block, and multiple sets of vent holes are opened at the right end of the inclined block and above the protrusion. A strip plate is fixedly connected to the left side of the inclined block, and the filter assembly is assembled between the housing and the strip plate on the left side of the inclined block.

[0009] Furthermore, a sliding groove is provided on the upper part of the housing. A movable plate is slidably connected to the upper part of the housing and inside the sliding groove. A shaped connecting frame is fixedly connected to the lower part of the movable plate and inside the second cavity. A shovel block is fixedly connected to the lower part of the shaped connecting frame and inside the multiple sets of openings. A reciprocating screw is rotatably connected to the inner side of the movable plate. A rectangular plate is fixedly connected to the upper part of the housing. The reciprocating screw is rotatably connected to the outer side of the rectangular plate. A bevel gear is fixedly connected to the outer side of the reciprocating screw and to the outer side of the housing. A rotatably connected... A rotating rod is fixedly connected to a bevel gear two on its outer side. A transmission belt is sleeved between the rotating rod and the reciprocating lead screw two. A push rod is fixedly connected to the outer side of the moving plate and above the housing. A stop gate is slidably connected to the outer side of the housing. A collection box is fixedly connected to the outer side of the housing and outside the stop gate. A transmission rod is fixedly connected to the outer side of the stop gate. The transmission rod passes through the collection box. A pressing plate is fixedly connected to the outer side of the transmission rod and outside the collection box. A fixing plate is fixedly connected above the collection box. A spring is fixedly connected between the fixing plate and the pressing plate.

[0010] Furthermore, the lower ends of the multiple sets of shovel blocks are set in a trapezoidal shape, the shovel blocks are in contact with the inner wall of the opening, and the first bevel gear and the second bevel gear mesh with each other.

[0011] Furthermore, on the moving path of the push rod, the height of the fixed plate is the same as the vertical distance between the top of the collection box and the top of the housing, and the height of the extrusion plate is greater than the height of the fixed plate.

[0012] Furthermore, a sewage discharge channel is provided on the inner side of the inclined block, and the sewage discharge channel is connected to multiple sets of openings. A baffle is slidably connected to the inner side of the inclined block and between the sewage discharge channel and the openings. A dirt removal block is slidably connected to the inner side of the inclined block and inside the openings. A round rod is fixedly connected to the outer side of the dirt removal block and near the baffle. The round rod is fixedly connected to the outer side of the baffle. A spring is fixedly connected between the dirt removal block and the inclined block. A push block is fixedly connected above the dirt removal block and above the inclined block. Multiple sets of pressure rods are fixedly connected to the outer side of the irregular connecting frame. A cleaning plate is slidably connected to the bottom of the sewage discharge channel. A connecting rod is fixedly connected to the outer side of the cleaning plate. A sludge storage tank is fixedly connected to the outer side of the housing. The sludge storage tank is connected to the sewage discharge channel. The connecting rod passes through the sludge storage tank. An extension plate is fixedly connected to the outer side of the connecting rod and the outer side of the sludge storage tank. A spring is fixedly connected between the extension plate and the housing. A short rod is fixedly connected to the outer side of the moving plate and near the extension plate.

[0013] Furthermore, the outer side of the push block and the side near the pressure rod is set as an inclined surface, and the outer side of the pressure rod and the side near the push block is set as an arc-shaped structure. A groove is provided on the inner side of the inclined block and behind the sewage channel. The length, width and height of the groove are the same as the length, width and height of the connecting rod, and the connecting rod is inside the groove.

[0014] The advantages of this application are: (1) In this application, when the water in the fish tank needs to be cleaned, the water pump draws water from the fish tank through the telescopic hose, while the extension rod moves left and right in the fish tank to increase the water absorption range of the telescopic hose. The squeezing rod moves along the serpentine slide above the guide plate, so that the extension rod moves back and forth in the fish tank and swings back and forth, further increasing the water absorption range of the telescopic hose. When the sewage falls above the inclined block, the solid impurities of the sewage fall into multiple sets of openings due to their own weight, so as to avoid clogging of the filter.

[0015] (2) In this application, when sewage falls above the inclined block, the moving plate moves back and forth along the reciprocating screw two, so that the irregular connecting frame drives the shovel block to move, so that the shovel block can shovel up the solid impurities on the inner wall of the opening, so as to avoid the solid impurities sticking to the inner wall of the opening. When the shovel block moves to the corresponding position of the baffle, the baffle opens, so that the shovel block can push the shoveled solid impurities into the collection box to clean the solid impurities in the opening. When the shovel block moves away from the baffle, the baffle returns to its original position.

[0016] (3) In this application, when the shovel block gradually approaches the push block and the pressure rod contacts the push block, the pressure rod squeezes the push block, so that the cleaning block can push the dirt in the dead corner of the opening into the sewage channel, and the cleaning plate can push the dirt that has fallen to the bottom of the sewage channel into the sewage storage tank, so as to achieve the purpose of cleaning the dirt in the dead corner of the opening and avoid the dirt from overflowing the opening and affecting the filter. When the shovel block moves away from the push block, the cleaning block is reset by the second spring. Attached Figure Description

[0017] Figure 1 This is a front view of the overall appearance of the present invention; Figure 2 This is a structural diagram of the shell and the inner side of the fish tank of the present invention; Figure 3 This is a structural diagram of the cavity and the bottom of the fish tank according to the present invention; Figure 4 This is an overall external structural diagram of the internal structure of the housing of the present invention; Figure 5 This is a diagram of the irregularly shaped connecting frame and its surrounding structure according to the present invention; Figure 6 This is a side view of the overall appearance and structure of the present invention; Figure 7 This is a rear structural view of the overall appearance of the present invention; Figure 8This is a structural diagram of the inside and outside of the collection box of the present invention; Figure 9 This is a structural diagram of the inner side of the cavity of the present invention; Figure 10 This is the invention Figure 9 Enlarged view of point a in the middle; Figure 11 This is a structural diagram of the connecting rod and extension plate of the present invention; Figure 12 This is a structural diagram of the sludge storage tank and its surrounding structure according to the present invention; Figure 13 This is the invention Figure 1 Enlarged view of point b in the middle.

[0018] Explanation of key figure labels: 100. Fish tank; 200. Shell; 300. Cavity 1; 400. Cavity 2; 101. Rotating shaft; 102. Extension rod; 103. Inlet; 105. Pump; 106. Telescopic hose; 107. Guide plate; 108. Extrusion rod; 109. Motor; 110. Reciprocating screw 1; 111. Push plate; 113. Inclined block; 114. Filter assembly; 115. Drainage machine; 116. Drain outlet; 117. Opening; 201. Moving plate; 202. Irregular connecting frame; 203. Shovel block; 204. Reciprocating screw 2; 205. Rectangular plate; 206. Push rod; 207. Gate 208. Collection box; 211. Transmission rod; 212. Extrusion plate; 213. Fixing plate; 214. Spring 1; 215. Bevel gear 1; 216. Bevel gear 2; 217. Rotating rod; 218. Transmission belt; 219. Slide groove; 301. Sewage discharge channel; 302. Baffle plate; 303. Stain removal block; 304. Round rod; 305. Spring 2; 306. Push block; 307. Pressure rod; 308. Cleaning plate; 309. Connecting rod; 310. Sewage storage box; 312. Extension plate; 313. Spring 3; 314. Short rod; 401. Mounting plate; 402. Filter plate; 403. Extraction plate. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0020] Example 1, as Figures 1-5As shown, a water filtration device for an ornamental fish tank includes a fish tank 100, a housing 200 fixedly connected to the outside of the fish tank 100, and a cavity 300 and a cavity 400 sequentially formed from bottom to top on the inside of the housing 200. A rotating shaft 101 is rotatably connected to the inner side of the housing 200 and the inner side of the cavity 300. An extension rod 102 is slidably connected above the rotating shaft 101 and inside the cavity 300. A water intake port 103 is provided on the outer side of the extension rod 102 and inside the fish tank 100. A water pump 105 is mounted on the top of the housing 200. The water outlet of the water pump 105 is connected to the cavity 400. A telescopic hose 106 is mounted on the water pump 105. The telescopic hose 106 is fixedly connected above the extension rod 102 and is connected to the water intake port 103. A guide plate 107 is fixedly connected to the inner side of the housing 200 and the bottom of the cavity 300. Below the extension rod 102 and on the guide plate 107, a guide plate 107 is fixedly connected to the bottom of the cavity 300. A pressing rod 108 is fixedly connected to the inner side of plate 107. A guide plate 107 guides the movement of the pressing rod 108, causing the extension rod 102 to swing left and right. A motor 109 is mounted on the outer side of housing 200. A reciprocating screw 110 is mounted at the output end of motor 109. The reciprocating screw 110 passes through the cavity 300. Push plates 111 are threadedly connected to the outer side of the reciprocating screw 110 and on both sides of the pressing rod 108. The push plates 111 push the pressing rod 108 to move. A serpentine slide is provided above the guide plate 107. The pressing rod 108 is slidably connected to the inner side of the serpentine slide. Both sets of push plates 111 are in contact with the pressing rod 108. An inclined block 113 is fixedly connected to the inside of cavity 300. Multiple openings 117 are formed above the inclined block 113. These openings allow wastewater to flow to the left along the inclined block 113 while solid impurities in the wastewater fall into the openings 117. A filter assembly 114 is installed between the inclined block 113 and the housing 200. A protrusion is fixedly connected to the right side of the inclined block 113. Multiple vent holes are formed above the protrusion on the right end of the inclined block 113. These vent holes allow air below the inclined block 113 to pass through to the top of the inclined block 113, increasing airflow within cavity 400. The left side of the inclined block 113 is fixedly connected to the protrusion. A strip plate is fixedly connected to the housing 200. The filter assembly 114 is assembled between the housing 200 and the strip plate on the left side of the inclined block 113. The filter assembly 114 includes a mounting plate 401, which is fixedly connected between the inclined block 113 and the housing 200. Multiple sets of filter discs 402 are slidably connected above the mounting plate 401. By setting the filter discs 402, floating objects and grease in sewage are filtered. An extraction plate 403 is fixedly connected to the outer side of the filter discs 402 and the outer side of the housing 200. A drainer 115 is assembled on the inner side of the housing 200 and the inner side of the lower end of the cavity 400. A drain outlet 116 is opened between the housing 200 and the fish tank 100. The outlet of the drainer 115 is connected to the drain outlet 116.

[0021] In practical use, the output end of the above-mentioned equipment drives the reciprocating screw 110 to rotate, causing the reciprocating screw 110 to drive the push plate 111 to move back and forth along the reciprocating screw 110. This allows the push plate 111 to push the extrusion rod 108 to move back and forth. Simultaneously with the extrusion rod 108's left-right movement, the extrusion rod 108 moves back and forth while simultaneously being squeezed by the inner side of the guide plate 107. This allows the extrusion rod 108 to drive the extension rod 102 to swing back and forth while moving left and right, and the extension rod 102 to drive the telescopic hose 106 to move back and forth inside the fish tank 100. The cleaning range within the fish tank 100 is increased to improve the efficiency of wastewater cleaning. When the water pump 105 pumps water into the cavity 400 through the telescopic hose 106 and falls above the inclined block 113, the wastewater flows along the inclined block 113 toward the filter plate 402. While the wastewater flows above the inclined block 113, solid impurities in the wastewater fall into the opening 117 to prevent the filter plate 402 from becoming less efficient due to the solid impurities in the wastewater. The filtered water flows below the inclined block 113 and is finally discharged back into the fish tank 100 by the drain pump 115.

[0022] Example 2, as Figures 4-7As shown, based on Embodiment 1, a sliding groove 219 is provided on the upper part of the housing 200. A movable plate 201 is slidably connected to the upper part of the housing 200 and inside the sliding groove 219. A shaped connecting frame 202 is fixedly connected to the lower part of the movable plate 201 and inside the cavity 400. A scraper block 203 is fixedly connected to the lower part of the shaped connecting frame 202 and inside the multiple sets of openings 117. By setting the scraper block 203, dirt on the inner wall of the opening 117 is scraped off, preventing dirt from sticking to the inner wall of the opening 117. The inner side of the movable plate 201 is threaded and rotatably connected. A reciprocating lead screw 204 is provided. A rectangular plate 205 is fixedly connected to the upper part of the housing 200. The reciprocating lead screw 204 is rotatably connected to the outside of the rectangular plate 205. A bevel gear 215 is fixedly connected to the outside of the reciprocating lead screw 110 and the outside of the housing 200. A rotating rod 217 is rotatably connected to the outside of the housing 200. A bevel gear 216 is fixedly connected to the outside of the rotating rod 217. The lower ends of multiple sets of shovel blocks 203 are set in a trapezoidal shape. The shovel blocks 203 fit against the inner wall of the opening 117. The bevel gear 215 and the bevel gear 216... A transmission belt 218 is sleeved between the rotating rod 217 and the reciprocating lead screw 204. A push rod 206 is fixedly connected to the outside of the moving plate 201 and above the housing 200. A baffle 207 is slidably connected to the outside of the housing 200 to prevent water from flowing out of the cavity 400. A collection box 208 is fixedly connected to the outside of the housing 200 and outside the baffle 207. A transmission rod 211 is fixedly connected to the outside of the baffle 207, passing through the collection box 208. A pressing plate 212 is fixedly connected to the outside of the collection box 208. By setting the pressing plate 212, the gate 207 can be opened through the transmission rod 211 when the pressing plate 212 is pressed. A fixing plate 213 is fixedly connected to the top of the collection box 208. The pressing plate 212 is on the moving path of the push rod 206. The height of the fixing plate 213 is the same as the vertical distance between the top of the collection box 208 and the top of the shell 200. The height of the pressing plate 212 is greater than the height of the fixing plate 213. A spring 214 is fixedly connected between the fixing plate 213 and the pressing plate 212.

[0023] In practical use, when the reciprocating screw 110 rotates, it drives the bevel gear 215 to rotate, which in turn drives the bevel gear 216 to rotate. The bevel gear 216 then drives the rotating rod 217 to rotate, which in turn drives the transmission belt 218 to rotate. The transmission belt 218 then drives the reciprocating screw 204 to rotate, causing the moving plate 201 to reciprocate along the reciprocating screw 204. The moving plate 201 then drives the irregular connecting frame 202 to reciprocate, which in turn drives multiple sets of shovel blocks 203 to reciprocate. The shovel blocks 203 can scoop up the dirt from the inner wall of the opening 117 to prevent the dirt from sticking to the inner wall of the opening 117. When the moving plate 201 moves to the corresponding position in the collection box 208, it drives the push rod 206 to push the extrusion plate. 212, the squeezing plate 212 drives the transmission rod 211 to move, thereby causing the transmission rod 211 to drive the baffle 207 to move, separating the baffle 207 from the housing 200, leaving a gap between the baffle 207 and the housing 200. At the same time, the irregular connecting frame 202 drives multiple sets of shovels 203 to push the dirt accumulated on the inner wall of the opening 117 through the gap between the baffle 207 and the housing 200 into the collection box 208 to clean the dirt in the opening 117 and prevent the dirt from overflowing from the opening 117. When the moving plate 201 moves away from the collection box 208, the push rod 206 stops blocking the squeezing plate 212, allowing the squeezing plate 212 to return to its original position by the force of the spring 214. The squeezing plate 212 drives the transmission rod 211 to return to its original position, and the transmission rod 211 drives the baffle 207 to return to its original position, thus preventing the sewage in the cavity 400 from entering the collection box 208.

[0024] Example 3, as Figure 1 , Figures 8-13As shown, based on Embodiment 1 or Embodiment 2, a sewage discharge channel 301 is provided on the inner side of the inclined block 113. The sewage discharge channel 301 communicates with multiple sets of openings 117. A baffle 302 is slidably connected on the inner side of the inclined block 113 and between the sewage discharge channel 301 and the openings 117. A dirt removal block 303 is slidably connected on the inner side of the inclined block 113 and the inner side of the openings 117. By setting the dirt removal block 303, dirt in the dead corners of the openings 117 is pushed into the sewage discharge channel 301. The outer side of the dirt removal block 303 and A round rod 304 is fixedly connected to one side near the cover plate 302. By setting the round rod 304, the cover plate 302 is pushed open by the round rod 304 before the dirt-removing block 303 pushes the dirt into the sewage channel 301. The round rod 304 is fixedly connected to the outside of the cover plate 302. A spring 305 is fixedly connected between the dirt-removing block 303 and the inclined block 113. A push block 306 is fixedly connected above the dirt-removing block 303 and above the inclined block 113. Multiple sets of pressure rods 3 are fixedly connected to the outside of the irregularly shaped connecting frame 202. 07. The outer side of the push block 306 and the side near the pressure rod 307 is set as an inclined surface, and the outer side of the pressure rod 307 and the side near the push block 306 is set as an arc structure. A groove is opened on the inner side of the inclined block 113 and behind the sewage channel 301. The length, width and height of the groove are the same as the length, width and height of the connecting rod 309. The connecting rod 309 is inside the groove. A cleaning plate 308 is slidably connected to the bottom of the sewage channel 301. The connecting rod 309 is fixedly connected to the outer side of the cleaning plate 308. The outer side of the housing 200 A sludge storage tank 310 is fixedly connected. A cleaning plate 308 is provided to push the sludge at the bottom of the sewage discharge channel 301 into the sludge storage tank 310. The sludge storage tank 310 is connected to the sewage discharge channel 301. A connecting rod 309 passes through the sludge storage tank 310. An extension plate 312 is fixedly connected to the outside of the connecting rod 309 and the outside of the sludge storage tank 310. A spring 313 is fixedly connected between the extension plate 312 and the housing 200. A short rod 314 is fixedly connected to the outside of the moving plate 201 and the side close to the extension plate 312.

[0025] In practical use, when the irregularly shaped connecting frame 202 moves towards the push block 306, the irregularly shaped connecting frame 202 drives the pressure rod 307, which in turn presses the push block 306, causing it to move to the right. This causes the push block 306 to move the cleaning block 303 to the right, which in turn causes the round rod 304 to move to the right. This causes the round rod 304 to move the baffle 302, allowing the cleaning block 303 to push the dirt in the dead corner of the opening 117 into the drainage channel 301. When the irregularly shaped connecting frame 202 moves away from the push block 306, the pressure rod 307 stops blocking the push block 306, allowing the cleaning block 303 to return to its original position under the elastic force of the spring 305. This causes the baffle 302 to return to its original position, preventing water in the cavity 400 from flowing into the drainage channel 301. When the movable plate 201 moves to the corresponding position towards the extension plate 312, the movable plate 201 drives the short rod 314, causing the short rod 314 to press the extension plate 312, causing the extension plate 312 to drive the connecting rod 309 to move towards the sludge storage tank 310, causing the connecting rod 309 to drive the cleaning plate 308 to move towards the sludge storage tank 310, so that the cleaning plate 308 can push the sludge that falls into the bottom of the sewage channel 301 into the sludge storage tank 310. When the movable plate 201 moves away from the extension plate 312, the short rod 314 ends its pressing on the extension plate 312, so that the extension plate 312 can return to its original position by the elastic force of the spring 313, thereby causing the cleaning plate 308 to return to its original position. At the same time as the cleaning plate 308 enters the groove, the sludge that just fell above the cleaning plate 308 is pushed to the bottom of the sewage channel 301 by the edge of the groove.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A water filtration and purification device for an ornamental fish tank, comprising a fish tank (100), characterized in that, The fish tank (100) is fixedly connected to a shell (200) on the outside. The inner side of the shell (200) is provided with a cavity one (300) and a cavity two (400) from bottom to top. A rotating shaft (101) is rotatably connected to the inner side of the housing (200) and the inner side of cavity one (300). An extension rod (102) is slidably connected above the rotating shaft (101) and inside the cavity one (300). A water inlet (103) is provided on the outer side of the extension rod (102) and inside the fish tank (100). A water pump (105) is mounted on the top of the housing (200). The water outlet of the water pump (105) is connected to the cavity two (300). 400) is connected, the pumping end of the pump (105) is equipped with a telescopic hose (106), the telescopic hose (106) is fixedly connected above the extension rod (102), the telescopic hose (106) is connected to the suction port (103), a guide plate (107) is fixedly connected to the inside of the housing (200) and at the bottom of the cavity (300), and a squeezing rod is fixedly connected below the extension rod (102) and inside the guide plate (107). 108), a motor (109) is mounted on the outside of the housing (200), and a reciprocating screw (110) is mounted on the output end of the motor (109). The reciprocating screw (110) passes through the cavity (300). A push plate (111) is threadedly connected to the outside of the reciprocating screw (110) and on both sides of the extrusion rod (108). An inclined block (111) is fixedly connected to the inside of the housing (200) and the inside of the cavity (300). 13) Multiple openings (117) are provided above the inclined block (113). A filter assembly (114) is installed between the inclined block (113) and the housing (200). A drain machine (115) is installed on the inner side of the housing (200) and on the inner side of the lower end of the cavity (400). A drain outlet (116) is provided between the housing (200) and the fish tank (100). The outlet of the drain machine (115) is connected to the drain outlet (116).

2. The water filtration and purification device for an ornamental fish tank according to claim 1, characterized in that, The filter assembly (114) includes a mounting plate (401) which is fixedly connected between the inclined block (113) and the housing (200). Multiple sets of filter sheets (402) are slidably connected above the mounting plate (401). An extraction plate (403) is fixedly connected to the outside of the filter sheets (402) and the outside of the housing (200).

3. The water filtration and purification device for an ornamental fish tank according to claim 2, characterized in that, A serpentine slide is provided above the guide plate (107), the extrusion rod (108) is slidably connected to the inside of the serpentine slide, and the push plate (111) is in contact with the extrusion rod (108).

4. The water filtration and purification device for an ornamental fish tank according to claim 3, characterized in that, A protrusion is fixedly connected to the right side of the inclined block (113). Multiple sets of air vents are opened at the right end of the inclined block (113) and above the protrusion. A strip plate is fixedly connected to the left side of the inclined block (113). The filter assembly (114) is assembled between the housing (200) and the strip plate on the left side of the inclined block (113).

5. The water filtration and purification device for an ornamental fish tank according to claim 4, characterized in that, A sliding groove (219) is provided above the housing (200). A movable plate (201) is slidably connected above the housing (200) and inside the sliding groove (219). A shaped connecting frame (202) is fixedly connected below the movable plate (201) and inside the cavity (400). A shovel block (203) is fixedly connected below the shaped connecting frame (202) and inside multiple openings (117). A reciprocating screw (204) is threadedly connected to the inner side of the movable plate (201). A rectangular plate (205) is fixedly connected above the housing (200). The reciprocating screw (204) is rotatably connected to the outer side of the rectangular plate (205). A bevel gear (215) is fixedly connected to the outer side of the reciprocating screw (110) and the outer side of the housing (200). A rotating rod (217) is rotatably connected to the outer side of the housing (200). A bevel gear (216) is fixedly connected to the outside of the rotating rod (217). A transmission belt (218) is sleeved between the rotating rod (217) and the reciprocating screw (204). A push rod (206) is fixedly connected to the outside of the moving plate (201) and above the housing (200). A stop gate (207) is slidably connected to the outside of the housing (200). A collection box (208) is fixedly connected to the outside of the housing (200) and outside the stop gate (207). A transmission rod (211) is fixedly connected to the outside of the stop gate (207). The transmission rod (211) passes through the collection box (208). A pressing plate (212) is fixedly connected to the outside of the transmission rod (211) and outside the collection box (208). A fixing plate (213) is fixedly connected above the collection box (208). A spring (214) is fixedly connected between the fixing plate (213) and the pressing plate (212).

6. The water filtration and purification device for an ornamental fish tank according to claim 5, characterized in that, The lower ends of the multiple sets of shovel blocks (203) are set in a trapezoidal shape, the shovel blocks (203) are in contact with the inner wall of the opening (117), and the first bevel gear (215) and the second bevel gear (216) mesh with each other.

7. The water filtration and purification device for an ornamental fish tank according to claim 6, characterized in that, The extrusion plate (212) is on the moving path of the push rod (206), the height of the fixing plate (213) is the same as the vertical distance between the top of the collection box (208) and the top of the shell (200), and the height of the extrusion plate (212) is greater than the height of the fixing plate (213).

8. The water filtration and purification device for an ornamental fish tank according to claim 7, characterized in that, A sewage discharge channel (301) is provided on the inner side of the inclined block (113), and the sewage discharge channel (301) is connected to multiple sets of openings (117). A baffle plate (302) is slidably connected on the inner side of the inclined block (113) and between the sewage discharge channel (301) and the opening (117). A dirt removal block (303) is slidably connected on the inner side of the inclined block (113) and the inner side of the opening (117). A round rod (304) is fixedly connected on the outer side of the dirt removal block (303) and the side close to the baffle plate (302). The round rod (304) is fixedly connected on the outer side of the baffle plate (302). A spring (305) is fixedly connected between the dirt removal block (303) and the inclined block (113). A pusher block (305) is fixedly connected above the dirt removal block (303) and above the inclined block (113). 6) Multiple sets of pressure rods (307) are fixedly connected to the outer side of the irregular connecting frame (202). A cleaning plate (308) is slidably connected to the bottom of the sewage channel (301). A connecting rod (309) is fixedly connected to the outer side of the cleaning plate (308). A sludge storage tank (310) is fixedly connected to the outer side of the housing (200). The sludge storage tank (310) is connected to the sewage channel (301). The connecting rod (309) passes through the sludge storage tank (310). An extension plate (312) is fixedly connected to the outer side of the connecting rod (309) and the outer side of the sludge storage tank (310). A spring (313) is fixedly connected between the extension plate (312) and the housing (200). A short rod (314) is fixedly connected to the outer side of the moving plate (201) and the side close to the extension plate (312).

9. A water filtration and purification device for an ornamental fish tank according to claim 8, characterized in that, The outer side of the push block (306) and the side near the pressure rod (307) is set as an inclined surface, and the outer side of the pressure rod (307) and the side near the push block (306) is set as an arc structure. The inner side of the inclined block (113) and the rear of the sewage channel (301) are provided with a groove. The length, width and height of the groove are the same as the length, width and height of the connecting rod (309). The connecting rod (309) is inside the groove.

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