Multi-cone separation pre-filter

Abstract

The utility model discloses a multi-cone separation pre-filter which comprises a filter bottle, the upper end of the filter bottle is connected with a valve head, one side of the valve head is provided with a water inlet, the other side of the valve head is provided with a water outlet, the lower end of the filter bottle is provided with a drain outlet, a ball valve is installed in the drain outlet, and a water segregator, a framework, a filter screen and a separation mechanism are installed in the filter bottle. The separation mechanism comprises an inner pipe part and an outer pipe part, an inner water cavity is formed between the inner pipe part and the outer pipe part, a plurality of conical funnels are arranged between the inner pipe part and the outer pipe part, and conical separation cavities are formed in the conical funnels. According to the multi-cone separation pre-filter disclosed by the utility model, the filter screen is combined with the multi-cone separator, double filter systems are perfectly fused, the filter effect is good, the flux is increased, the pollution discharge is clean and thorough, and the multi-cone separation pre-filter can adapt to different environmental water qualities.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and particularly relates to a multi-cone separation pre-filter. Background Art

[0002] Traditional pre-filters simply use a filter screen as a medium for filtration. The filtration method has poor sewage discharge effect, is easy to block, and is also difficult to adapt to water quality in different environments, affecting the service life and user experience.

[0003] With the continuous improvement of living standards and the rapid development of technology, many household water equipment have emerged. People have higher and higher requirements for water quality, and pre-purification equipment is installed in household pipelines such as water wells or under the kitchen to ensure the water purification needs of backend intelligent water equipment.

[0004] The existing pre-filter with a double filtration system designs two filter screens on the inner and outer sides of a filter bottle installed on a skeleton. When discharging sewage, the surface of the outer filter screen is flushed to achieve the effect of cleaning and sewage discharge.

[0005] Due to the limited design of the gap between the filter screens in the existing pre-filter with a double filtration system, the impurities accumulated between the two filter screens increase with the increase of water use time, and it is not easy to drain them completely, resulting in blockage, reduced flux, and reduced water output at the backend, affecting household water use, and thus reducing the service life of the whole machine. Summary of the Utility Model

[0006] To solve the above technical problems, the technical solution adopted by the utility model is: a multi-cone separation pre-filter, including a filter bottle. The upper end of the filter bottle is threadedly connected with a valve head. One side of the valve head is provided with a water inlet, and the other side is provided with a water outlet. The lower end of the filter bottle is provided with a sewage outlet, and a ball valve is installed in the sewage outlet. A water distributor, a skeleton, a filter screen, and a separation mechanism are installed inside the filter bottle. The filter screen surrounds the skeleton. An inlet cavity is formed between the filter screen and the inner wall of the filter bottle. The separation mechanism is located inside the skeleton. A number of water passing holes are provided around the skeleton. A lower fixing ring is installed at the lower end of the skeleton. An outlet pipe is provided at the upper end of the skeleton. The water distributor is sleeved on the outlet pipe, and the outlet pipe is buckled with the water distributor. An annular support platform for supporting the water distributor is provided on the inner wall of the filter bottle. A number of communication ports are provided on the water distributor. The water inlet is communicated with the inlet cavity through the communication ports. The outlet pipe is communicated with the water outlet. An inner layer inlet cavity is formed between the separation mechanism and the skeleton. The separation mechanism includes an inner pipe part and an outer pipe part. An inner water cavity is formed between the inner pipe part and the outer pipe part. The outlet pipe is communicated with the inside of the outer pipe part. A number of conical funnels are provided between the inner pipe part and the outer pipe part. A conical separation cavity is formed inside the conical funnel. A water outlet port communicating with the inside of the inner pipe part is provided at the upper end of the conical funnel. A water inlet hole is provided on one side of the conical funnel. A water outlet hole is provided at the lower end of the conical funnel. The water outlet hole is communicated with the inner water cavity. The conical separation cavity is communicated with the inner layer inlet cavity through the water inlet hole.

[0007] As a preference of the above technical solution, the separation mechanism is constituted by sequentially arranging a plurality of separators. A connector is connected to the upper end of each separator. The separator includes an inner pipe section and an outer pipe section. An inner water cavity unit is formed between the inner pipe section and the outer pipe section. All the inner water cavity units are sequentially connected to form an inner water cavity. A plurality of conical funnels are provided between the inner pipe section and the outer pipe section. All the inner pipe sections are connected to form an inner pipe part. A plurality of funnel covers are provided on the connector. The funnel covers correspond to the conical funnels one by one. The funnel covers cover the corresponding conical funnels. The water outlet ports are respectively located on the conical funnels. A plurality of buckles are respectively provided at the upper and lower ends of the outer pipe section. Adjacent separators are connected by a plurality of buckle plates. Buckle slots for the buckles to be inserted into are respectively provided at the upper and lower ends of the buckle plate. The topmost connector is connected with a butt joint pipe through a buckle plate. The butt joint pipe is connected to the water outlet pipe.

[0008] As a preference of the above technical solution, gaskets are respectively provided between the separator and the connector, between the connector and the butt joint pipe, and between the separator and the lower fixing ring.

[0009] As a preference of the above technical solution, the conical funnels on two adjacent separators are arranged staggeredly.

[0010] As a preference of the above technical solution, a central column is fixedly connected to the middle of the lower fixing ring. A spring is sleeved on the central column. A baffle is threadedly connected to the upper end of the central column. An inner boss is fixedly connected to the lower end of the inner pipe section of the lowermost separator. The central column passes through the inner boss and extends into the inner pipe part. The spring is clamped between the baffle and the inner boss.

[0011] As a preference of the above technical solution, a plurality of spiral vanes are fixedly connected to the water distributor. Communication ports are formed between adjacent spiral vanes.

[0012] As a preference of the above technical solution, a pressure gauge is installed on the valve head. The pressure gauge is used to detect the water pressure at the water outlet.

[0013] As a preference of the above technical solution, a seal is provided at the sewage outlet. The upper end of the seal is located inside the filter bottle and has a diameter larger than that of the sewage outlet. The lower end of the seal extends out of the filter bottle from the sewage outlet and is threadedly connected to a ball valve. A fixing piece is threadedly connected to the lower end of the seal.

[0014] As a preference of the above technical solution, a lead isolation layer is provided on the inner wall of the valve head.

[0015] As a preference of the above technical solution, an upper fixing ring is buckled to the upper end of the framework. A lower locking ring is threadedly connected to the lower end of the framework. The upper end of the filter screen is clamped between the upper fixing ring and the framework. The upper end of the filter screen is clamped between the lower locking ring and the framework. A support ring is connected to the inner side of the lower locking ring. The lower end of the separation mechanism is placed on the support ring. The periphery of the lower fixing ring forms a sealed connection with the inner wall of the filter bottle through a sealing ring.

[0016] The beneficial effects of the present utility model are as follows: The multi-cone separation pre-filter of the present utility model is designed by breaking the conventional pure filter screen filtration principle. The filter screen is combined with the multi-cone separator, and the dual filtration systems are perfectly integrated. Raw water enters from the water inlet, first passes through the filter screen in the filter bottle cavity for the first layer of filtration, and the filtered water then flows into the interior of the multi-cone separator for the second separation filtration and purification of water. Finally, the water flows into the water outlet from the middle of the filter element. The two filtration systems cooperate with each other, with good filtration effect, increased flux, thorough sewage discharge, and can adapt to different environmental water qualities. When discharging sewage, the lower fixed ring for sewage discharge is opened, and the separated impurities are discharged from the sewage discharge channel, and finally all are discharged from the sewage discharge port at the bottom of the filter bottle. The valve head adopts lead isolation technology to avoid the precipitation of heavy metals inside. Description of the Drawings

[0017] Figure 1 is the structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the framework;

[0019] Figure 3 is the structural schematic diagram of the separation mechanism;

[0020] Figure 4 is the structural schematic diagram of the separator;

[0021] Figure 5 is the cross-sectional structural schematic diagram of the separator;

[0022] Figure 6 is the structural schematic diagram of the adapter;

[0023] Figure 7 is the structural schematic diagram of the lower fixed ring;

[0024] Figure 8 is the structural schematic diagram of the water distributor;

[0025] Figure 9 is the schematic diagram of the water flow of the filter of the present utility model in the filtration state;

[0026] Figure 10 The schematic diagram of the water flow of the filter of the present utility model in the backwashing sewage discharge state. Detailed Embodiment

[0027] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0028] 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 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. Therefore, it 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.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Such as Figures 1-10As shown in the figure, a multi-cone separation pre-filter includes a filter bottle 14. The upper end of the filter bottle 14 is threadedly connected with a valve head 1. One side of the valve head 1 is provided with a water inlet 101, and the other side is provided with a water outlet 102. The lower end of the filter bottle 14 is provided with a sewage outlet 1401, and a ball valve 10 is installed in the sewage outlet 1401. A water distributor 13, a skeleton 4, a filter screen 3 and a separation mechanism are installed inside the filter bottle 14. The filter screen 3 surrounds the skeleton 4. An inlet water cavity 1420 is formed between the filter screen 3 and the inner wall of the filter bottle 14. The separation mechanism is located inside the skeleton 4. A number of water passing holes 403 are provided around the skeleton 4. A lower fixing ring 11 is installed at the lower end of the skeleton 4. An outlet pipe 410 is provided at the upper end of the skeleton 4. The water distributor 13 is sleeved on the outlet pipe 410, and the outlet pipe 410 is buckled with the water distributor 13. An annular support platform 1410 for supporting the water distributor 13 is provided on the inner wall of the filter bottle 14. A number of communication ports 1310 are provided on the water distributor 13. The water inlet 101 communicates with the inlet water cavity 1420 through the communication ports 1310. The outlet pipe 410 communicates with the water outlet 102. An inner layer inlet water cavity 1430 is formed between the separation mechanism and the skeleton 4. The separation mechanism includes an inner pipe part 1440 and an outer pipe part. An inner water cavity 1431 is formed between the inner pipe part 1440 and the outer pipe part. The outlet pipe 410 communicates with the inside of the outer pipe part. A number of conical funnels 510 are provided between the inner pipe part 1440 and the outer pipe part. A conical separation cavity 504 is formed in the conical funnel 510. A water outlet port 511 communicating with the inside of the inner pipe part 1440 is provided at the upper end of the conical funnel 510. A water inlet hole 512 is provided on one side of the conical funnel 510. A water outlet hole 513 is provided at the lower end of the conical funnel 510. The water outlet hole 513 communicates with the inner water cavity 1431. The conical separation cavity 504 communicates with the inner layer inlet water cavity 1430 through the water inlet hole 512. Water enters the inlet water cavity 1420 from the water inlet 101, and then passes through the filter screen 3 to form the first filtration. The water filtered for the first time enters the inner layer inlet water cavity 1430, and then enters the conical separation cavity 504 from the water inlet hole 512. Spiral separation is carried out in the conical separation cavity 504. The impurities are separated to the bottom of the conical separation cavity 504 and are discharged into the inner water cavity 1431 from the water outlet hole 513. The purified water flows out from the water outlet port 511 and enters the inside of the inner pipe part 1440, and flows out from the water outlet 102.

[0031] Further, the separation mechanism is constituted by a number of separators 5 arranged in sequence. A connector 6 is connected to the upper end of each separator 5. The separator 5 includes an inner pipe section 520 and an outer pipe section 521. An inner water cavity unit is formed between the inner pipe section 520 and the outer pipe section 521. All the inner water cavity units are connected in sequence to form an inner water cavity 1431. A number of conical funnels 510 are provided between the inner pipe section 520 and the outer pipe section 521. All the inner pipe sections 520 are connected to form an inner pipe portion 1440. A number of funnel covers 522 are provided on the connector 6. The funnel covers 522 correspond to the conical funnels 510 one by one. The funnel covers 522 cover the corresponding conical funnels 510. The water outlet ports 511 are respectively located on the conical funnels 510. A number of fasteners 523 are respectively provided at the upper and lower ends of the outer pipe section 521. Adjacent separators 5 are connected by a number of fastener plates 524. The upper and lower ends of the fastener plate 524 are respectively provided with slots 525 for the fasteners 523 to be inserted into. The uppermost connector 6 is connected with a connection pipe 526 through a fastener plate 524. The connection pipe 526 is connected to the water outlet pipe 410. The separation mechanism can adjust the number of separators 5 according to needs to ensure the flow rate. The conical funnels 510, the inner pipe sections 520 and the outer pipe sections 521 are integrally formed by machining. The connector 6 and the funnel covers 522 are integrally formed by machining. The separation mechanism is composed of multiple separators 5 detachably connected. In this way, the separation mechanism can be taken out and disassembled for internal cleaning and maintenance.

[0032] Further, gaskets 527 are respectively provided between the separator 5 and the connector 6, between the connector 6 and the connection pipe 526, and between the separator 5 and the lower fixing ring 11. The gaskets 527 ensure the sealing performance of each part of the separation mechanism.

[0033] Further, the conical funnels 510 on adjacent two separators 5 are arranged staggeredly. In this way, the conical separation cavities 504 of the conical funnels 510 play a filtering role at all angles of the separation mechanism, improving the water filtering effect.

[0034] Further, a central column 1110 is fixedly connected to the middle of the lower fixing ring 11. A spring 1111 is sleeved on the central column 1110. The upper end of the central column 1110 is threadedly connected with a baffle 1112. The lower end of the inner pipe section 520 of the lowermost separator 5 is fixedly connected with an inner boss 1113. The central column 1110 passes through the inner boss 1113 and extends into the inner pipe part 1440. The spring 1111 is clamped between the baffle 1112 and the inner boss 1113. A sewage discharge hole 1450 communicating with the inner water cavity 1431 is arranged on the lower fixing ring 11. When the ball valve 10 is in the closed state, the water pressure on the upper and lower surfaces of the lower fixing ring 11 is stable. The lower fixing ring 11 is kept in the state of covering the lower end of the separation mechanism under the action of the elastic force of the spring 1111, and the sewage discharge hole 1450 is blocked by the lower end of the separation mechanism. When the ball valve 10 is opened, the water below the lower fixing ring 11 flows out due to gravity, and the water pressure difference between the upper and lower surfaces of the lower fixing ring 11 becomes larger. The elastic force of the spring 1111 is not enough to hold the lower fixing ring 11, resulting in the lower fixing ring 11 moving down a certain distance, so that the water in the inner water cavity 1431 can flow out from the sewage discharge hole 1450. The water flow can quickly wash the surface of the filter screen 3 to form a backwash for the filter. An annular groove is arranged around the lower fixing ring 11 and a sealing ring is installed.

[0035] Further, a plurality of spiral blades 1301 are fixedly connected to the water distributor 13. A communication port 1310 is formed between adjacent spiral blades 1301. The spiral blades 1301 cause the water flow to form a spiral turbulent flow when entering the water inlet cavity 1420.

[0036] Further, a pressure gauge 2 is installed on the valve head 1. The pressure gauge 2 is used to detect the water pressure at the water outlet 102. The water pressure inside the filter bottle 14 can be monitored in real time through the pressure gauge 2. By comparing the water pressure of the front-end water pressure gauge with the data of the pressure gauge 2, the filtering effect of the filter screen 3 can be judged, so as to judge whether it is necessary to open the ball valve 10 for sewage discharge, or whether the filter screen 3 needs to be cleaned, maintained or replaced when disassembled.

[0037] Further, a seal 8 is provided at the sewage discharge port 1401. The upper end of the seal 8 is located inside the filter bottle 14 and has a diameter larger than that of the sewage discharge port 1401. The lower end of the seal 8 extends out of the filter bottle 14 from the sewage discharge port 1401 and is threadedly connected to the ball valve 10. A fixing member 9 is threadedly connected to the lower end of the seal 8. A plurality of sealing rings are arranged between the seal 8 and the lower end of the filter bottle 14 to ensure the sealing performance. Rotate the fixing member 9 so that the lower end of the filter bottle 14 is clamped between the fixing member 9 and the upper end of the seal 8.

[0038] Further, a lead isolation layer is provided on the inner wall of the valve head 1. The lead isolation layer is injection molded to form an insert inside the valve head 1, which plays a role in preventing heavy metal precipitation.

[0039] Further, an upper fixing ring 310 is buckled to the upper end of the framework 4, and a lower locking ring 311 is threadedly connected to the lower end of the framework 4. The upper end of the filter screen 3 is clamped between the upper fixing ring 310 and the framework 4, and the upper end of the filter screen 3 is clamped between the lower locking ring 311 and the framework 4. A support ring 319 is connected to the inner side of the lower locking ring 311. The lower end of the separation mechanism is placed on the support ring. The periphery of the lower fixing ring 11 forms a sealed connection with the inner wall of the filter bottle 14 through a sealing ring. The filter screen 3 is fixed to the framework 4 by the upper fixing ring 310 and the lower locking ring 311. The filter screen 3 surrounds the framework 4 for one week to enclose the framework 4. When draining sewage, a negative pressure is formed below the lower fixing ring 11, and the lower fixing ring 11 moves down a certain distance so that the sewage in the inner water cavity 1431 can be discharged.

[0040] It is worth mentioning that the technical features such as the lead separation layer and the filter screen involved in the patent application of the present invention should be regarded as the prior art. The specific structures, working principles, and possible control methods and spatial arrangement methods of these technical features can be selected conventionally in the art and should not be regarded as the invention points of the patent of the present invention. The patent of the present invention will not be further specifically elaborated.

[0041] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A multi-cone separation pre-filter, characterized in that, It includes a filter bottle (14). The upper end of the filter bottle (14) is threadedly connected to a valve head (1). One side of the valve head (1) is provided with a water inlet (101), and the other side is provided with a water outlet (102). The lower end of the filter bottle (14) is provided with a sewage outlet (1401). A ball valve (10) is installed in the sewage outlet (1401). A water distributor (13), a skeleton (4), a filter screen (3) and a separation mechanism are installed inside the filter bottle (14). The filter screen (3) surrounds the periphery of the skeleton (4). An inlet water chamber (1420) is formed between the filter screen (3) and the inner wall of the filter bottle (14). The separation mechanism is located inside the skeleton (4). A number of water passing holes (403) are provided around the skeleton (4). A lower fixing ring (11) is installed at the lower end of the skeleton (4). An outlet pipe (410) is provided at the upper end of the skeleton (4). The water distributor (13) is sleeved on the outlet pipe (410). The outlet pipe (410) is snap-connected to the water distributor (13). An annular support platform (1410) for supporting the water distributor (13) is provided on the inner wall of the filter bottle (14). A number of communication ports (1310) are provided on the water distributor (13). The water inlet (101) communicates with the inlet water chamber (1420) through the communication ports (1310). The outlet pipe (410) communicates with the water outlet (102). An inner layer inlet water chamber (1430) is formed between the separation mechanism and the skeleton (4). The separation mechanism includes an inner pipe part (1440) and an outer pipe part. An inner water chamber (1431) is formed between the inner pipe part (1440) and the outer pipe part. The outlet pipe (410) communicates with the inside of the outer pipe part. A number of conical funnels (510) are provided between the inner pipe part (1440) and the outer pipe part. A conical separation chamber (504) is formed in the conical funnel (510). A water outlet port (511) communicating with the inside of the inner pipe part (1440) is provided at the upper end of the conical funnel (510). A water inlet hole (512) is provided on one side of the conical funnel (510). A water outlet hole (513) is provided at the lower end of the conical funnel (510). The water outlet hole (513) communicates with the inner water chamber (1431). The conical separation chamber (504) communicates with the inner layer inlet water chamber (1430) through the water inlet hole (512).

2. The multi-cone separation pre-filter according to claim 1, wherein The separation mechanism is composed of a number of separators (5) arranged in sequence. A connector (6) is connected to the upper end of each separator (5). The separator (5) includes an inner pipe section (520) and an outer pipe section (521). An inner water cavity unit is formed between the inner pipe section (520) and the outer pipe section (521). All the inner water cavity units are connected in sequence to form an inner water cavity (1431). A number of conical funnels (510) are provided between the inner pipe section (520) and the outer pipe section (521). All the inner pipe sections (520) are connected to form an inner pipe part (1440). A number of funnel covers (522) are provided on the connector (6). The funnel covers (522) correspond to the conical funnels (510) one by one. The funnel cover (522) covers the corresponding conical funnel (510). The water outlet ports (511) are respectively located on the conical funnels (510). A number of buckles (523) are respectively provided at the upper and lower ends of the outer pipe section (521). Adjacent separators (5) are connected by a number of buckle plates (524). The upper and lower ends of the buckle plate (524) are respectively provided with slots (525) for the buckles (523) to be inserted into. The topmost connector (6) is connected with a docking pipe (526) through a buckle plate (524). The docking pipe (526) is connected to a water outlet pipe (410).

3. The multi-cone separation pre-filter according to claim 2, characterized in that, Sealing gaskets (527) are respectively provided between the separator (5) and the connector (6), between the connector (6) and the docking pipe (526), and between the separator (5) and the lower fixing ring (11).

4. The multi-cone separation pre-filter according to claim 3, characterized in that, The conical funnels (510) on two adjacent separators (5) are arranged staggeredly with each other.

5. The multi-cone separation pre-filter according to claim 4, characterized in that, A central column (1110) is fixedly connected to the middle of the lower fixing ring (11). A spring (1111) is sleeved on the central column (1110). A baffle (1112) is threadedly connected to the upper end of the central column (1110). The lower end of the inner pipe section (520) of the lowermost separator (5) is fixedly connected with an inner boss (1113). The central column (1110) passes through the inner boss (1113) and extends into the inner pipe part (1440). The spring (1111) is clamped between the baffle (1112) and the inner boss (1113).

6. The multi-cone separation pre-filter according to claim 1, characterized in that, A number of spiral vanes (1301) are fixedly connected to the water distributor (13). Communication ports (1310) are formed between adjacent spiral vanes (1301).

7. The multi-cone separation pre-filter according to claim 1, wherein, A pressure gauge (2) is installed on the valve head (1). The pressure gauge (2) is used to detect the water pressure at the water outlet (102).

8. The multi-cone separation pre-filter according to claim 1, wherein A seal (8) is provided at the sewage outlet (1401). The upper end of the seal (8) is located inside the filter bottle (14) and has a diameter larger than that of the sewage outlet (1401). The lower end of the seal (8) extends out of the filter bottle (14) from the sewage outlet (1401) and is threadedly connected to a ball valve (10). A fixing member (9) is threadedly connected to the lower end of the seal (8).

9. The multi-cone separation pre-filter according to claim 1, characterized in that, A lead isolation layer is provided on the inner wall of the valve head (1).

10. The multi-cone separation pre-filter according to claim 1, characterized in that, The upper end of the framework (4) is buckled with an upper fixing ring (310), the lower end of the framework (4) is threadedly connected with a lower locking ring (311), the upper end of the filter screen (3) is clamped between the upper fixing ring (310) and the framework (4), the upper end of the filter screen (3) is clamped between the lower locking ring (311) and the framework (4), a support ring (319) is connected to the inner side of the lower locking ring (311), the lower end of the separation mechanism is placed on the support ring, and the periphery of the lower fixing ring (11) forms a sealed connection with the inner wall of the filter bottle (14) through a sealing ring.

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