Refrigerator filter with sealed large-opening end face

Abstract

The utility model relates to a refrigerator filter with a sealed large opening end face, which comprises a body, a filter element, a filter element end cover and the like, the filter element is arranged in the body, a water outlet hole is horizontally arranged on the inner wall of the filter element, the outer wall of one end of the filter element is sleeved with a filter element bottom cover, and the outer wall of the other end of the filter element is sleeved with a filter element end cover. The filter element is adhered to a filter element bottom cover and a filter element end cover through glue, the end cover is arranged at the upper end of the body, the body is connected with the end cover through a threaded structure, threads are arranged on the outer wall of one end, close to the end cover, of the body, threads are arranged on the inner wall of one side of the end cover, and an end cover sealing ring is fixed on the end cover; the top of the outer wall of the upper layer of the filter element end cover is attached to the vertical surface of the water inlet driving table to limit the up-down movement of the filter element end cover, so that the position of the filter element end cover is fixed to limit the position movement of the filter element, and the phenomenon that the filter element is damaged due to shaking of the filter and infirm fixation of the filter element is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, in particular to a refrigerator filter with a large opening end surface seal. Background Art

[0002] In daily life, we often use refrigerators with large openings and sealed ends to store fruits, vegetables, and cooked food. This type of refrigerator is popular among the public because of its large storage area, complete functions, and multiple storage modules. During the storage process, the requirements for food storage environment hygiene are very strict. The refrigerator mainly uses filters to remove impurities entering the refrigerator. The filter filters the refrigerant before it enters the capillary tube to remove moisture and fixed impurities in the refrigerant to keep the environment inside the refrigerator clean and hygienic. Therefore, the filter in the refrigerator with large openings and sealed ends is an important maintenance object, and the inspection of the filter and the replacement of the internal filter element have become particularly important.

[0003] For example, a refrigerator filter element that is easy to replace is disclosed as CN209060678U, wherein a filter element is arranged inside a shell, and the outer walls at both ends of the filter element are respectively sleeved with a base and a filter element end cover, a horizontally arranged water outlet hole is opened on the inner wall of the filter element, a connecting hole is opened in the middle of the end cover, a water outlet pipe is movably connected inside the connecting hole, a sealing ring is circumferentially arranged on the inner wall of the water outlet hole, the inner wall of the sealing ring is in contact with the outer wall of the water outlet pipe, limiting blocks are bonded to the outer walls on both sides of the water outlet pipe, positioning holes are opened on both sides of the connecting hole, and the limiting blocks cooperate with the positioning holes. When the filter element needs to be replaced after a long period of work, the end cover is rotated. When the limiting block coincides with the positioning hole, the end cover is pulled. At this time, the end cover can be separated from the shell, the filter element is replaced, the limiting block and the positioning hole are calibrated to coincide, and the end cover is continued to be rotated. When the limiting block and the positioning hole no longer coincide, the rotation is stopped. At this time, the filter element is fixed inside the shell, and continues to filter impurities in the refrigerator.

[0004] However, when replacing the filter element of the prior art, the filter element and the connector are sealed by a sealing ring, and the sealing ring generates a large friction force, which makes it difficult to remove the filter element. In addition, the filter element is not fixed stably, because the filter element is directly fixed to the main body through the base and the filter element end cover sleeved on the outer walls at both ends, and there is a lack of further stable auxiliary components. When the filter shakes, the filter element is easily damaged. Utility Model Content

[0005] According to the above technical problems, the utility model provides a refrigerator filter with a large opening end face seal, characterized in that it comprises a body, a filter element, a filter element end cover, a filter element bottom cover, an end cover, and an end cover sealing ring, wherein a filter element is placed in the body, and a horizontally arranged water outlet hole is opened on the inner wall of the filter element, a filter element bottom cover is sleeved on the outer wall of one end of the filter element, and a filter element end cover is sleeved on the outer wall of the other end of the filter element, the filter element bottom cover and the filter element end cover are bonded to each other by glue, an end cover is placed on the upper end of the body, the body and the end cover are connected by a threaded structure, a thread is provided on the outer wall of the body close to one end of the end cover, a thread is provided on the inner wall of one side of the end cover, and an end cover sealing ring is fixed on the end cover;

[0006] The filter element end cover is a double-layer structure consisting of an upper layer and a lower layer. The lower layer of the filter element end cover is a cylindrical a structure, the bottom of the cylinder a is hollowed out, and the upper layer of the filter element end cover is a cylindrical b structure, and a plurality of triangular pieces are protruded from the outer side of the cylinder b.

[0007] The end cover is a double-layer structure of an upper layer and a lower layer composed of a hollow cylinder c and a cylinder d, respectively. The cylinder d is slightly larger than the cylinder c. The lower layer of the end cover is close to the side of the main body. A plurality of triangular baffles extend from the inner wall of the lower layer of the end cover. A plurality of water inlet drive platforms are raised around the edge of the inner wall on the side of the lower layer of the end cover close to the upper layer of the end cover. The water inlet drive platform is composed of a four-sided pyramid structure and a tetrahedron structure connected together. A groove is provided on the top of the tetrahedron structure. The lower layer of the end cover is connected to and fixed to the four-sided pyramid structure. The four-sided pyramid structure is fixedly connected to the tetrahedron structure. The upper layer of the filter element end cover is placed Into the lower layer of the end cover, the outer protruding triangular piece of the upper layer of the filter element end cover fits with the triangular baffle extending from the inner wall of the lower layer of the end cover, the top of the outer wall of the upper layer of the filter element end cover fits with the vertical plane of the water inlet drive platform, the inner wall of the upper layer of the end cover is a water inlet sealing cavity, an end cover sealing ring is fixed to the bottom of the inner wall of the upper layer of the end cover, and a plurality of connection assist buckles are fixed to the top of the outer wall of the upper layer of the end cover, the connection assist buckle is an arc structure, the thickness of the connection assist buckle gradually increases as it approaches the end cover connection, and the connection assist buckle is respectively marked with a connector installation guide and a buckle removal guide;

[0008] The end cover is connected to the matching component, the base of the matching component is a cylindrical e structure, and there are two regular tetrahedral structure protrusions on the outside of the cylinder e. Connecting buckles are fixed to the edges of both sides of the base, and the connecting buckles are two symmetrically raised arc structures. A water inlet sealing component is fixed at the center of the base, and the water inlet sealing component is a cylindrical f structure. A raised ring structure is provided in the middle of the cylinder f. A water inlet ejector is fixed to one side of the water inlet sealing component. The water inlet sealing component is located at the end cover sealing The water inlet sealing assembly is above the ring, the end face of the water inlet sealing assembly passes through the water inlet sealing cavity on the end cover and cooperates with the end cover sealing ring for sealing, the water inlet ejector pin and the four-sided pyramid structure of the water inlet driving platform are squeezed against each other, and a water outlet sealing assembly is fixed on the water inlet sealing assembly on the matching component, the water outlet sealing assembly is a cylindrical g structure, and there are two raised circular ring structures on the cylinder g, a water outlet is provided on the top of the water outlet sealing assembly, and the water outlet sealing assembly passes through the end cover of the filter element and enters the water outlet hole of the filter element.

[0009] The beneficial effects of the utility model are:

[0010] The position of the filter element is fixed by cooperating with the upper structure of the filter element end cover and the lower structure of the end cover, wherein the upper layer of the filter element end cover is a cylindrical b structure, and multiple triangular pieces are protruded from the outer side of the cylinder b. The lower layer of the end cover is a hollow cylindrical d structure. Multiple triangular baffles extend from the inner wall of the lower layer of the end cover. Multiple water inlet drive platforms are protruded around the edge of the inner wall on one side of the lower layer of the end cover close to the upper layer of the end cover. The water inlet drive platform is composed of a four-sided pyramid structure and a tetrahedron structure. The lower layer of the end cover is fixedly connected to the four-sided pyramid structure. The four-sided pyramid structure It is fixedly connected with the tetrahedron structure. After the upper layer of the filter element end cover is placed into the lower layer of the end cover, the outer protruding triangular piece of the upper layer of the filter element end cover fits with the triangular baffle extending from the inner wall of the lower layer of the end cover to limit the left and right rotation of the filter element end cover. The top of the outer wall of the upper layer of the filter element end cover fits with the vertical surface of the water inlet drive platform to limit the up and down movement of the filter element end cover. Therefore, the filter element end cover is fixed in position to limit the position movement of the filter element, thereby avoiding the filter from being shaken and the filter element being damaged due to the filter element not being firmly fixed.

[0011] The end cover is connected with the matching parts to allow liquid to enter the filter element of the filter. A water inlet sealing component is fixed at the center of the base. The water inlet sealing component is a cylindrical f structure. A raised ring structure is provided in the middle of the cylinder f. A water inlet ejector is fixed on one side of the water inlet sealing component. The water inlet sealing component is located above the sealing ring of the end cover. The end face of the water inlet sealing component passes through the water inlet sealing cavity on the end cover and cooperates with the sealing ring of the end cover to seal. The water inlet ejector and the water inlet driving platform squeeze each other. When the four-sided platform structure of the water inlet driving platform lifts up the water inlet ejector, liquid flows in from the water inlet ejector, and passes through the groove above the tetrahedral structure of the water inlet driving platform to make the liquid pass through the gap left by the bottom cover of the filter element and the water inlet driving platform and flow into the filter element, so that the liquid enters the filter element to filter impurities.

[0012] The water outlet sealing component is fixed on the water inlet sealing component on the matching component. The water outlet sealing component is a cylindrical g structure with two raised ring structures on the cylindrical g. A water outlet is arranged on the top of the water outlet sealing component. The water outlet sealing component passes through the filter element end cover and enters the water outlet hole of the filter element. Through the water outlet, the filtered liquid flows out of the filter.

[0013] The center of the base is fixed with a water inlet sealing assembly, the inner wall of the upper layer of the end cover is the water inlet sealing cavity, the bottom of the inner wall of the upper layer of the end cover is fixed with an end cover sealing ring, the end face of the water inlet sealing assembly passes through the water inlet sealing cavity on the end cover and seals with the end cover sealing ring, the end cover sealing ring and the water inlet sealing assembly are used to seal the water inlet waterway, which avoids the filter element being replaced, because the filter element and the connector are directly sealed through the sealing ring, the friction force generated by the sealing ring is large, and the difficulty of removing the filter element is increased;

[0014] The connection assist buckle on the filter and the connection buckle of the matching component form a match in the end face and the axial direction to achieve the installation and removal of the filter. The base of the matching component is a cylindrical e structure, and there are two regular tetrahedral structural protrusions on the outside of the cylinder e. Connecting buckles are fixed on the two side edges of the base. The connecting buckles are two symmetrically raised arc structures. A plurality of connecting assist buckles are fixed on the top of the outer wall of the upper layer of the end cover. The connecting assist buckle is an arc structure. The thickness of the connecting assist buckle gradually increases as it approaches the connection of the end cover. The connecting assist buckle is respectively marked with a connector installation guide and a buckle disassembly guide. When installing the filter, the matching component drives the connecting buckle to rotate clockwise along the connector installation guide and enters the connecting assist buckle of the end cover. As the connecting buckle rotates, the thickness of the connecting assist buckle of the end cover gradually increases, and the installation force gradually increases until the end cover is clamped with the matching component, thereby realizing the installation of the filter. When disassembling, the matching component drives the connecting buckle to rotate counterclockwise along the buckle disassembly guide and leaves the connecting assist buckle of the end cover. As the connecting buckle rotates, the thickness of the connecting assist buckle of the end cover gradually decreases, and the disassembly force gradually decreases until the end cover is completely separated from the matching component, thereby realizing the disassembly of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a refrigerator filter with a large opening end face seal according to the utility model;

[0016] Figure 2 This is a structural diagram of an end cover sealing ring of a refrigerator filter with a large opening end face seal according to the utility model;

[0017] Figure 3 This is a structural diagram of a filter element bottom cover of a refrigerator filter with a large opening end face seal according to the utility model;

[0018] Figure 4 This is a main body structure diagram of a refrigerator filter with a large opening end face seal according to the utility model;

[0019] Figure 5 This is a structural diagram of a filter element of a refrigerator filter with a large opening end face seal according to the utility model;

[0020] Figure 6 This is a structural diagram of an end cover of a refrigerator filter with a large opening end face seal according to the utility model;

[0021] Figure 7 This is a side view of a filter element end cover of a refrigerator filter with a large opening end face seal according to the utility model;

[0022] Figure 8 This is a structural diagram of a filter element end cover of a refrigerator filter with a large opening end face seal according to the utility model;

[0023] Fig. 9The utility model is a structural diagram of the matching parts of a refrigerator filter with a large opening end surface seal.

[0024] As shown in the figure, 1. Main body; 2. Filter element bottom cover; 3. Filter element; 4. Filter element end cover; 5. End cover; 6. End cover sealing ring; 7. Water inlet drive platform; 8. Connection assist buckle; 9. Buckle removal guide; 10. Connector installation guide; 11. Water inlet sealing assembly; 12. Connection buckle; 13. Water inlet ejector pin; 14. Installation guide; 15. Water outlet; 16. Water outlet sealing assembly; 17. Base; 18. Water inlet sealing cavity. DETAILED DESCRIPTION

[0025] Example 1

[0026] The utility model provides a refrigerator filter with a large opening end face seal, which is characterized by comprising a body 1, a filter element 3, a filter element end cover 4, a filter element bottom cover 2, an end cover 5, and an end cover sealing ring 6. The filter element 3 is placed in the body 1, and the inner wall of the filter element 3 is provided with a horizontally arranged water outlet hole. The outer wall of one end of the filter element 3 is sleeved with the filter element bottom cover 2, and the outer wall of the other end of the filter element 3 is sleeved with the filter element end cover 4. The filter element 3 is bonded to the filter element bottom cover 2 and the filter element end cover 4 by glue. The end cover 5 is placed on the upper end of the body 1, and the body 1 and the end cover 5 are connected by a threaded structure. The outer wall of the body 1 close to one end of the end cover 5 is provided with a thread, and the inner wall of one side of the end cover 5 is provided with a thread, and the end cover sealing ring 6 is fixed on the end cover 5;

[0027] The filter element end cover 4 is a double-layer structure consisting of an upper layer and a lower layer. The lower layer of the filter element end cover 4 is a cylindrical a structure, the bottom of the cylinder a is hollowed out, and the upper layer of the filter element end cover 4 is a cylindrical b structure, and multiple triangular pieces are protruded from the outer side of the cylinder b.

[0028] The end cap 5 is a double-layer structure of an upper layer and a lower layer composed of a hollow cylinder c and a cylinder d, respectively. The cylinder d is slightly larger than the cylinder c. The lower layer of the end cap 5 is close to the main body. The inner wall of the lower layer of the end cap 5 extends with multiple triangular baffles. The lower layer of the end cap 5 is close to the upper layer of the end cap 5. A plurality of water inlet drive platforms 7 are raised around the edge of the inner wall. The water inlet drive platform 7 is composed of a four-sided pyramid structure and a tetrahedron structure. A groove is provided on the top of the tetrahedron structure. The lower layer of the end cap 5 is connected and fixed to the four-sided pyramid structure. The four-sided pyramid structure is fixedly connected to the tetrahedron structure. The upper layer of the filter element end cap 4 is placed in the lower layer of the end cap 5. The outer raised triangular piece of the upper layer of the filter element end cover 4 fits with the triangular baffle extending from the inner wall of the lower layer of the end cover 5, the top of the outer wall of the upper layer of the filter element end cover 4 fits with the vertical plane of the water inlet drive platform 7, the inner wall of the upper layer of the end cover 5 is the water inlet sealing cavity 18, the bottom of the inner wall of the upper layer of the end cover 5 is fixed with an end cover sealing ring 6, and the top of the outer wall of the upper layer of the end cover 5 is fixed with a plurality of connection assist buckles 8, the connection assist buckle 8 is an arc structure, and the thickness of the connection assist buckle 8 gradually increases as it approaches the connection of the end cover 5, and the connection assist buckle 8 is respectively marked with a connector installation guide 10 and a buckle removal guide 9;

[0029] The end cover 5 is connected to the matching component. The base 17 of the matching component is a cylindrical e structure. There are two regular tetrahedral structure protrusions on the outside of the cylinder e. The two side edges of the base 17 are fixed with connecting buckles 12. The connecting buckles 14 are two symmetrically raised arc structures. The center of the base 17 is fixed with a water inlet sealing component 11. The water inlet sealing component 11 is a cylindrical f structure. A raised ring structure is provided in the middle of the cylinder f. A water inlet ejector pin 13 is fixed on one side of the water inlet sealing component 11. The water inlet sealing component 11 is located on the end cover sealing ring 6. Above the water inlet sealing component 11, the end face of the water inlet sealing component 11 passes through the water inlet sealing cavity 18 on the end cover 5 and cooperates with the end cover sealing ring 6 for sealing. The water inlet ejector pin 13 and the four-sided pyramid structure of the water inlet driving platform 7 are squeezed against each other. The water outlet sealing component 16 is fixed on the water inlet sealing component 11 on the matching component. The water outlet sealing component 16 is a cylindrical g structure with two raised circular ring structures on the cylinder g. A water outlet is provided on the top of the water outlet sealing component 16. The water outlet sealing component 16 passes through the filter element end cover 4 and enters the water outlet hole of the filter element 3.

[0030] Example 2

[0031] When the utility model is used, the position of the filter element 3 is fixed by cooperating with the upper structure of the filter element end cover 4 and the lower structure of the end cover 5, wherein the upper layer of the filter element end cover 4 is a cylindrical b structure, and a plurality of triangular pieces are protruded from the outer side of the cylinder b, and the lower layer of the end cover 5 is an internally hollow cylindrical d structure, and a plurality of triangular baffles are extended from the inner wall of the lower layer of the end cover 5, and a plurality of water inlet drive platforms are protruded around the edge of the inner wall on one side of the lower layer of the end cover 5 close to the upper layer of the end cover, and the water inlet drive platform 7 is composed of a four-sided pyramid structure and a tetrahedron structure connected, and the lower layer of the end cover 5 is fixedly connected to the four-sided pyramid structure, and the four The prism structure is fixedly connected to the tetrahedron structure. After the upper layer of the filter element end cover 4 is placed in the lower layer of the end cover, the outer protruding triangular piece of the upper layer of the filter element end cover 4 is fitted with the triangular blocking piece extending from the inner wall of the lower layer of the end cover 5 to limit the left and right rotation of the filter element end cover 4. The top of the outer wall of the upper layer of the filter element end cover 4 is fitted with the vertical surface of the water inlet driving platform 7 to limit the up and down movement of the filter element end cover 4. Therefore, the filter element end cover 4 is fixed in position to limit the position movement of the filter element 3, thereby avoiding the filter from shaking and causing damage to the filter element 3 due to loose fixation.

[0032] Example 3

[0033] When the utility model is used, the end cover 5 is connected with the matching parts to allow liquid to enter the filter element 3 of the filter. A water inlet sealing component 11 is fixed at the center of the base 17. The water inlet sealing component 11 is a cylindrical f structure, and a raised ring structure is provided in the middle of the cylinder f. A water inlet ejector pin 13 is fixed on one side of the water inlet sealing component 11. The water inlet sealing component 11 is located above the end cover sealing ring 6. The end face of the water inlet sealing component 11 passes through the water inlet sealing cavity 18 on the end cover 5 and cooperates with the end cover sealing ring 6 for sealing. The water inlet ejector pin 13 and the water inlet driving platform 7 squeeze each other. When the four-sided platform structure of the water inlet driving platform 7 lifts up the water inlet ejector pin 13, liquid flows in from the water inlet ejector pin 13, and through the groove above the tetrahedral structure of the water inlet driving platform 7, the liquid passes through the gap left by the filter element bottom cover 2 and the water inlet driving platform 7 and flows into the filter element 3, so that the liquid enters the filter element 3 for impurity filtration.

[0034] A water outlet sealing component 16 is fixed to the water inlet sealing component 11 on the mating component. The water outlet sealing component 16 is a cylindrical g structure with two raised circular ring structures on the cylinder g. A water outlet 15 is provided on the top of the water outlet sealing component 16. The water outlet sealing component 16 passes through the filter element end cover 4 and enters the water outlet hole of the filter element 3. Through the water outlet 15, the filtered liquid flows out of the filter.

[0035] Example 4

[0036] When the utility model is used, a water inlet sealing assembly 11 is fixed at the center of the base 17, the inner wall of the upper layer of the end cover 5 is a water inlet sealing cavity 18, and an end cover sealing ring 6 is fixed to the bottom of the inner wall of the upper layer of the end cover 5. The end face of the water inlet sealing assembly 11 passes through the water inlet sealing cavity 18 on the end cover 5 and cooperates with the end cover sealing ring 6 for sealing. The water inlet waterway is sealed by the end cover sealing ring 6 and the water inlet sealing assembly 11, which avoids the problem that when the filter element 3 is replaced, the filter element 3 and the connector are directly sealed through the sealing ring, and the friction force generated by the sealing ring is large, which increases the difficulty of disassembling the filter element 3.

[0037] Example 5

[0038] When the utility model is used, the connection-assisting buckle 8 on the filter and the connection buckle 12 of the matching component form a match in the end face and the axial direction, so as to realize the installation and removal of the filter. The base 17 of the matching component is a cylindrical e structure, and there are two regular tetrahedral structure protrusions on the outside of the cylinder e. The two side edges of the base 17 are fixed with connection buckles 12, and the connection buckles 12 are two symmetrically protruding arc structures. A plurality of connection-assisting buckles 8 are fixed on the top of the outer wall of the upper layer of the end cover 5. The connection-assisting buckle 8 is an arc structure, and the thickness of the connection-assisting buckle 8 gradually increases as it approaches the connection of the end cover 5. The connection-assisting buckle 8 is respectively marked with a connector installation guide 10 and a buckle removal guide 9. When the filter is installed, the matching component drives the connection buckle 12 along the connector installation guide. Rotate clockwise toward 10 to enter the connection assist buckle 8 of the end cover 5. As the connection buckle 12 rotates, the thickness of the connection assist buckle 12 of the end cover 5 gradually increases, and the installation force gradually increases until the end cover 5 is clamped with the matching component, thereby realizing the installation of the filter. During disassembly, the matching component drives the connection buckle 12 to rotate counterclockwise along the buckle disassembly guide 9 and leave the connection assist buckle 8 of the end cover 5. As the connection buckle 12 rotates, the thickness of the connection assist buckle 8 of the end cover 5 gradually decreases, and the disassembly force gradually decreases, until the end cover 5 is completely separated from the matching component, thereby realizing the disassembly of the filter.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A refrigerator filter with a large opening end face seal, characterized in that It includes a body, a filter element, a filter element end cover, a filter element bottom cover, an end cover, and an end cover sealing ring. The filter element is placed in the body, and the inner wall of the filter element is provided with a horizontally arranged water outlet hole. The outer wall of one end of the filter element is sleeved with the filter element bottom cover, and the outer wall of the other end of the filter element is sleeved with the filter element end cover. The upper end of the body is provided with an end cover, and the body and the end cover are connected by a threaded structure. The outer wall of the body close to one end of the end cover is provided with a thread, and the inner wall of one side of the end cover is provided with a thread, and an end cover sealing ring is fixed on the end cover.

2. A refrigerator filter with a large opening and sealed end surface according to claim 1, characterized in that The filter element end cover is composed of an upper structure and a lower structure. The lower structure of the filter element end cover is a cylinder a structure, and the bottom of cylinder a is hollow. The upper structure of the filter element end cover is a cylinder b structure. The outer side of cylinder b is provided with multiple protrusions, and the protrusions are triangular pieces.

3. A refrigerator filter with a large opening and sealed end surface according to claim 1, characterized in that The end caps are respectively composed of a hollow cylinder c and a cylinder d, and the end caps are double-layer structures. The diameter of the cylinder d is slightly larger than that of the cylinder c. The lower layer of the end cap is close to the side of the main body, and a plurality of triangular baffles extend from the inner wall of the lower layer of the end cap. The lower layer of the end cap is close to the side of the upper layer of the end cap, and a plurality of water inlet drive platforms are raised around the edge of the inner wall. The water inlet drive platform is composed of a four-sided pyramid structure and a tetrahedron structure. A groove is provided above the tetrahedron structure. The lower layer of the end cap is connected to a fixed four-sided pyramid structure, and the four-sided pyramid structure is fixedly connected to the tetrahedron structure. The upper layer of the filter element end cap is placed under the end cap. In the layer, the outer raised triangular piece of the upper layer of the filter element end cover is fitted with the triangular baffle extending from the inner wall of the lower layer of the end cover, the top of the outer wall of the upper layer of the filter element end cover is fitted with the vertical plane of the water inlet driving platform, the inner wall of the upper layer of the end cover is a water inlet sealing cavity, an end cover sealing ring is fixed to the bottom of the inner wall of the upper layer of the end cover, and a plurality of connecting assist buckles are fixed to the top of the outer wall of the upper layer of the end cover, the connecting assist buckle is an arc structure, and the thickness of the connecting assist buckle gradually increases as it approaches the end cover connection, and the connecting assist buckle is respectively marked with a connector installation guide and a buckle disassembly guide.

4. A refrigerator filter with a large opening and sealed end surface according to claim 1, characterized in that The end cover is connected to the matching component, the base of the matching component is a cylindrical e structure, and there are two regular tetrahedral structure protrusions on the outside of the cylinder e. Connecting buckles are fixed to the edges of both sides of the base, and the connecting buckles are two symmetrically raised arc structures. A water inlet sealing component is fixed at the center of the base, and the water inlet sealing component is a cylindrical f structure. A raised ring structure is provided in the middle of the cylinder f. A water inlet ejector is fixed to one side of the water inlet sealing component. The water inlet sealing component is located at the end cover sealing The water inlet sealing assembly is above the ring, the end face of the water inlet sealing assembly passes through the water inlet sealing cavity on the end cover and cooperates with the end cover sealing ring for sealing, the water inlet ejector pin and the four-sided pyramid structure of the water inlet driving platform are squeezed against each other, and a water outlet sealing assembly is fixed on the water inlet sealing assembly on the matching component, the water outlet sealing assembly is a cylindrical g structure, and there are two raised circular ring structures on the cylinder g, a water outlet is provided on the top of the water outlet sealing assembly, and the water outlet sealing assembly passes through the end cover of the filter element and enters the water outlet hole of the filter element.

5. A refrigerator filter with a large opening and sealed end surface according to claim 1, characterized in that The filter element is bonded to the filter element bottom cover and the filter element end cover by glue.

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