Closestool sealing water tank
The toilet's sealed water tank design, featuring a closed structure and a motor-driven water pump, solves the problems of complex structure and poor sealing in traditional water tanks, achieving a compact, sealed, and clean water tank effect, thus improving user experience and safety.
Patent Information
- Application Number
- CN202422945931.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional toilet tanks have complex structures, large sizes, and poor sealing, making them prone to leaks and affecting bathroom cleanliness and user experience.
The water tank adopts a closed structure, which is formed by blow molding of plastic or welding of metal. Combined with the design of motor-driven water pump and sealing ring, the internal space layout is optimized to enhance sealing and stability.
It achieves a compact water tank structure and good sealing performance, preventing dust and bacteria from entering, improving ease of use and internal cleanliness, reducing the risk of leakage, simplifying the internal structure, and reducing costs.
Smart Images

Figure CN223922322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toilet technology, and in particular to a sealed toilet tank. Background Technology
[0002] With the improvement of people's living standards and the pursuit of a higher quality of life, the market demand for more hygienic, efficient, and compact toilet flushing solutions is increasing. Traditional toilet tanks typically use an open or semi-open structure, usually with an end cap installed on top. They are relatively large and complex in structure, and their sealing performance is poor, which may lead to leakage during use, affecting the cleanliness of the bathroom and the user experience. Therefore, developing a new type of toilet tank that can overcome these shortcomings is of significant practical importance. Utility Model Content
[0003] Therefore, the purpose of this utility model is to provide a toilet sealing tank, which has the characteristics of simple and compact structure and good sealing performance.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows:
[0005] A toilet sealed water tank includes a water tank, an inlet valve disposed in the water tank, and a flushing device connected to the water tank. The flushing device is driven by a water pump. The water tank is a box body with a cavity that is closed on all sides and top and bottom. A stepped part for installing the inlet valve extends from one side of the water tank. An inlet is provided below the stepped part. An outlet for connecting the flushing device is provided on one side of the bottom of the water tank.
[0006] The water tank is made of plastic material and is integrally formed by blow molding.
[0007] The water tank includes a first tank shell at the front and a second tank shell at the rear, which are connected by welding or bonding.
[0008] The inlet valve is installed through the stepped section. The inlet valve is cylindrical and has an outlet pipe below it. An upper fixing ring is provided above the stepped section for fitting onto the upper part of the inlet valve, and a lower fixing ring is provided below the stepped section for fitting onto the outlet pipe.
[0009] The outlet pipe is fitted with a sealing ring, which is a frustum-shaped ring with a smaller bottom and a larger top. The sealing ring abuts against and fits against the lower fixing ring.
[0010] The outer wall of the water outlet pipe is threaded, and the outer sleeve of the water outlet pipe is provided with a sealing plate for abutting against the bottom surface of the lower fixing ring and a tightening nut that can be screwed upward to tighten the sealing plate.
[0011] The upper and lower fixing rings are integrally formed with the water tank.
[0012] The water inlet is at a higher level than the water outlet.
[0013] The flushing device includes a water outlet at one end and a water outlet pipe at the other end connected to a water pump. The water outlet of the water pump is connected to a flushing pipe, which branches into a first flushing pipe and a second flushing pipe.
[0014] The water tank is equipped with a vent valve on its upper surface and an overflow port on its rear side.
[0015] The beneficial effects of this utility model are:
[0016] 1. Compared to traditional water tanks, this water tank has a better sealing structure. The outside of the tank is only connected to the inlet and outlet, and the drainage operation is achieved by a water pump driven by a motor, replacing the traditional complex mechanical device and reducing the complexity of the internal structure. On the other hand, a stepped section extends from one side of the water tank for installing the inlet valve, making the installation of the inlet valve more stable. It also optimizes the internal space layout of the water tank, and the inlet valve is set more compactly, so that the water tank forms a relatively sealed space, effectively preventing the intrusion of external dust, bacteria and other pollutants, and keeping the inside clean.
[0017] 2. The toilet tank is mainly made of plastic material through blow molding or by welding or bonding the first tank shell and the second tank shell together. Compared with the traditional tank structure, it is more complete and simple, has better molding strength, lower parts cost, and higher processing efficiency.
[0018] 3. The upper and lower fixing rings are integrally molded with the water tank body, resulting in a high degree of integrity. When fixed to the inlet valve, the strength and sealing effect are better. The outlet pipe is fitted with a frustum-shaped sealing ring, which fits tightly when it abuts against the upper part of the lower fixing ring. At the same time, a sealing plate is also screwed on the lower fixing ring to abut against it, further improving the sealing performance and preventing water leakage. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the external structure of the toilet's sealed water tank;
[0020] Figure 2 This is a structural diagram of the inlet valve and water tank;
[0021] Figure 3 This is a schematic diagram of the inlet valve inside the water tank;
[0022] Figure 4 This is a structural diagram of the water tank;
[0023] Figure 5 This is a schematic diagram of the flushing device. Detailed Implementation
[0024] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0025] Reference Figure 1 , Figure 2 This utility model proposes a toilet sealed water tank, including a water tank 1, an inlet valve 2 installed in the water tank 1, and a flushing device 5 connected to the water tank 1. The flushing device 5 is driven by a water pump 51. The water tank 1 is a box with a cavity that is closed on all sides and top and bottom. A stepped part 12 extends from one side of the water tank 1 for installing the inlet valve 2. An inlet 4 is provided below the stepped part 12. An outlet 3 connected to the flushing device 5 is provided on one side of the bottom of the water tank 1.
[0026] Preferably, the toilet tank 1 is mainly made of plastic through blow molding. In another embodiment, when the tank 1 is made of metal, it is formed by welding a first tank shell and a second tank shell. Compared with traditional tank structures, this design is more complete, simpler, and has better sealing. The tank 1 is only connected to the outlet 3 and the inlet 4 on the outside, and the drainage operation is achieved by a water pump driven by a motor, replacing the traditional complex mechanical device, reducing the complexity of the internal structure, and allowing for precise control of water flow according to actual needs. This enables intelligent water level management and flushing operation, improving user convenience and comfort. On the other hand, a stepped part 12 extends from one side of the tank 1 for installing the inlet valve 2, making the installation of the inlet valve 2 more stable. It also optimizes the internal space layout of the tank 1, and the inlet valve 2 is set more compactly, making the tank 1 form a relatively sealed space, effectively preventing the intrusion of external dust, bacteria, and other pollutants, and keeping the interior clean.
[0027] Specifically, when the housing 1 is made of plastic, it is manufactured by blow molding to provide good sealing and structural stability; as a different embodiment, the housing 1 can also be a metal water tank, which is formed by die casting and welding to provide the highest strength and sealing.
[0028] Reference Figure 2 , Figure 3 The inlet valve 2 is installed through the stepped part 12. The inlet valve 2 is cylindrical. A first outlet pipe 21 is provided below the inlet valve 2. An upper fixing ring 120 is provided above the stepped part 12 for fitting onto the upper part of the inlet valve 2. A lower fixing ring 121 is provided below the stepped part 12 for fitting onto the first outlet pipe 21.
[0029] Reference Figure 3 The first water outlet pipe 21 is fitted with a sealing ring 20. The sealing ring 20 is a frustum-shaped structure with a smaller bottom and a larger top. The sealing ring 20 abuts against and fits against the lower fixing ring 121.
[0030] Reference Figure 3 The outer wall of the first water outlet pipe 21 is provided with threads, and the first water outlet pipe 21 is fitted with a sealing plate 22 for abutting against the bottom surface of the lower fixing ring 121 and a tightening nut 23 that can be screwed upward to tighten the sealing plate 22.
[0031] Specifically, the first water outlet pipe 21 is fitted with a frustum-shaped sealing ring 20, which fits tightly when it abuts against the upper part of the lower fixing ring 121. At the same time, a sealing plate 22 is screwed on the lower fixing ring 121 to abut against it, further improving the sealing performance and preventing water leakage.
[0032] The upper fixing ring 120 and the lower fixing ring 121 are integrally formed with the housing 1. Specifically, this design ensures that the upper and lower fixing rings have high integrity and strength, and when they are fitted and fixed to the upper and lower ends of the water inlet valve 12, the strength and sealing effect are better.
[0033] The water inlet 4 is at a higher level than the water outlet 3, which makes the water pressure in the water tank 1 more stable, improves the water intake efficiency and flushing effect; at the same time, it effectively prevents water backflow and ensures the cleanliness of the water in the water tank 1.
[0034] Reference Figure 5 The flushing device 5 includes a second water outlet pipe 50 connected at one end to the water outlet 3 and at the other end to the water pump 51. The water outlet of the water pump 51 is connected to a flushing pipe 52, which branches into a first flushing pipe 520 and a second flushing pipe 521. Preferably, a sealing ring 500 is also provided at the second water outlet pipe 50 and the water outlet 3 to improve the sealing performance. Specifically, the water outlet 3 is first led to the water inlet of the water pump 51 through the second water outlet pipe 50, and then the water pump 51 flushes the water into the toilet bowl. The water flows through the two pipes into the toilet bowl, forming a stronger flushing force.
[0035] Reference Figure 4 The water tank 1 is equipped with a vent valve 14 on its upper surface to ensure pressure balance inside and outside the tank, preventing deformation or malfunction due to pressure differences. The vent valve 14 also features a filter to prevent dust and bacteria from entering the tank. An overflow port 13 is located at the rear of the water tank 1. When the water level exceeds a safe range, the overflow port 13 automatically opens to drain excess water into the drain pipe, preventing overflow and protecting the safety and hygiene of the bathroom.
[0036] In summary, this toilet sealed tank has significant advantages in terms of sealing performance, size, structure, automation, safety, and maintenance. It can effectively meet the market demand for a more hygienic, efficient, and compact toilet flushing solution, and has broad application prospects and market potential.
Claims
1. A toilet sealing water tank, characterized by, The utility model provides a water tank (1), set up in water tank (1) water inlet valve (2) and flush device (5) with water tank (1) connection, flush device (5) is driven by water pump (51), water tank (1) is the box body with the cavity of all around and upper and lower all closed, water tank (1) one side extends the ladder part (12) for installing water inlet valve (2), the water inlet (4) is arranged below the ladder part (12), the water outlet (3) of flush device (5) is arranged in water tank (1) bottom one side.
2. A toilet seal tank according to claim 1, wherein, The water tank (1) is integrally formed by blow molding of plastic material.
3. A toilet seal tank according to claim 1, wherein, The water tank (1) includes a first tank shell (10) at the front and a second tank shell (11) at the back, and the first tank shell (10) and the second tank shell (11) are connected by welding or bonding.
4. A toilet seal tank according to claim 1, wherein, The water inlet valve (2) is installed through the ladder part (12), the water inlet valve (2) is cylindrical, the water inlet valve (2) is provided with a first water outlet pipe (21) below, the ladder part (12) is provided with an upper fixing ring (120) for sleeving on the upper part of the water inlet valve (2) above, and the ladder part (12) is provided with a lower fixing ring (121) for sleeving on the first water outlet pipe (21) below.
5. A toilet seal tank according to claim 4, wherein, The first water outlet pipe (21) is provided with a sealing rubber ring (20), and the sealing rubber ring (20) is in the shape of a circular truncated cone with a small lower part and a large upper part, and the sealing rubber ring (20) abuts and fits on the lower fixing ring (121).
6. A toilet seal tank according to claim 4, wherein, The first water outlet pipe (21) is provided with threads on the outer wall, and the first water outlet pipe (21) is provided with a sealing sheet (22) for abutting on the bottom surface of the lower fixing ring (121) and a tightening nut (23) capable of tightening the sealing sheet (22) upward.
7. A toilet seal tank according to claim 4, wherein, The upper fixing ring (120) and the lower fixing ring (121) are integrally formed with the water tank (1).
8. A toilet seal tank according to claim 1, wherein, The water inlet (4) is higher than the water outlet (3).
9. A toilet seal tank according to claim 1, wherein, The flush device (5) includes a second water outlet pipe (50) connected to the water outlet (3) at one end and connected to the water pump (51) at the other end, the water outlet end of the water pump (51) is connected with a flush pipe (52), and the flush pipe (52) is connected to branch out a first flush pipe (520) and a second flush pipe (521).
10. A toilet seal tank according to claim 1, wherein, The water tank (1) is provided with an air vent valve (14) on the upper surface, and the water tank (1) is provided with an overflow port (13) on the back side.