Pressure storage sealing structure of pressure storage type flushing device

Abstract

The utility model discloses a pressure storage sealing structure of a pressure storage type flushing device, which comprises a water storage tank, a piston, a pressure storage spring and a guide rod, a guide sleeve is arranged in the center of the piston, and the piston is sleeved outside the guide rod through the guide sleeve to slide. The piston divides the water storage cavity into an upper cavity and a lower cavity which are not communicated with each other. The pressure storage spring is arranged in the water storage tank in the axial direction, and the two ends of the pressure storage spring abut against the inner wall of the water storage cavity and the piston respectively. An upper sealing ring and a side sealing ring which are in attached contact with the inner wall of the piston are arranged on the top face and the side face of the skirt portion of the piston respectively, a first through hole communicated with the water storage cavity is formed in the top end of the water storage tank, and a water inlet end connector and a water outlet end connector are arranged at the bottom end of the water storage tank.

Description

Technical Field

[0001] The utility model relates to the technical field of bathrooms, in particular to a pressure storage sealing structure of a pressure storage type flushing device. Background Art

[0002] In recent years, smart toilets have gained market recognition and favor. The enormous market prospects have attracted numerous companies within the industry, including many large companies that have expanded across industries, transforming the design of existing toilets. The design concept of flush toilets has been particularly well-received and praised. However, the compact and sophisticated design of flush toilets has placed new demands on flushing mechanisms. This has led to the development of energy storage flush toilets, which break away from traditional high-level tank flushing methods. However, these products still present several structural challenges.

[0003] Existing energy storage flush toilets use a spring-pushing piston. Excessive friction between the piston and the inner wall of the water storage tank can hinder its proper movement. Too little friction can affect the piston's sealing performance. Furthermore, prolonged movement within the water storage tank can cause pressure wear, further degrading the piston's sealing performance. If the piston leaks, it can affect the drainage pressure of the pressure tank and allow water to enter the upper middle portion of the tank, affecting the proper function of the piston's pressure storage mechanism. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure storage sealing structure of a pressure storage type flushing device for solving the above-mentioned problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pressure storage sealing structure of a pressure storage flushing device includes a water storage tank, a piston, a pressure storage spring and a guide rod. A guide sleeve is provided at the center of the piston. The piston slides on the outside of the guide rod through the guide sleeve, and the piston divides the water storage chamber into two upper and lower cavities that do not circulate with each other. The pressure storage spring is axially placed in the water storage tank and its two ends are pressed against the inner wall of the water storage chamber and the piston respectively. The top surface and side surface of the skirt of the piston are respectively provided with an upper sealing ring and a side sealing ring that are in contact with the inner wall of the piston. The top end of the water storage tank is provided with a first through hole connected to the water storage chamber, and the bottom end is provided with a water inlet interface and a water outlet interface.

[0007] Preferably, the top end of the piston is provided with the piston cavity, and the bottom end of the pressure storage spring is connected to the bottom of the piston cavity.

[0008] Preferably, the upper sealing ring includes a first sealing ring and a second sealing ring respectively inlaid on the top surface of the skirt of the piston and located on the inner and outer sides of the cavity opening of the piston cavity, and the top inner wall of the water storage cavity and located below the first through hole are provided with a first annular boss and a second annular boss respectively in close contact with the first sealing ring and the second sealing ring.

[0009] Preferably, the side sealing ring is a third sealing ring embedded in the outer side wall of the skirt of the piston.

[0010] Preferably, a second through hole communicating with the water storage chamber is opened at the bottom end of the water storage tank, and a switch valve is provided on the second through hole.

[0011] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0012] 1. The utility model provides a pressure storage sealing structure for a pressure storage flushing device. When the water tank is filled with water and the piston moves to the end position of the stroke, the upper sealing ring on the top surface of the piston is in close contact with the annular boss on the inner wall of the water storage chamber, ensuring that when the piston reaches the maximum force storage point, the front and rear ends of the piston are isolated, thereby ensuring the sealing between the piston and the inner wall of the water storage tank; at the same time, during the movement of the piston, the side sealing ring inlaid on the outer wall of the piston is in close contact with the inner wall of the water storage chamber, thereby ensuring the sealing performance of the piston side and preventing water from the front end of the water storage chamber from entering the rear end during the force storage activity of the piston.

[0013] 2. The utility model provides a pressure storage sealing structure for a pressure storage flushing device. A first through hole communicating with a water storage chamber is provided at the top of the water tank. When the water tank is horizontally arranged at the rear end of the toilet, the first through hole is located on the lower tank wall. The first through hole can be used to exhaust the gas at the rear end of the water tank when the water inlet piston of the water tank moves backward. The first through hole can also be used to drain the water leaked to the rear end of the water tank through the hole into the toilet bowl for flushing when the sealing structure of the piston leaks, thereby avoiding water accumulation at the rear end of the piston and affecting the normal operation of the pressure storage structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the utility model installed at the rear end of a toilet;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model;

[0016] Figure 3 This is a partial enlarged view of the piston position of the utility model;

[0017] Figure 4 This is a schematic diagram of the water inflow state of the water storage tank of the utility model;

[0018] Figure 5This is a schematic diagram of the drainage state of the water storage tank of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element of the present invention must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0021] Example

[0022] Please refer to Figures 1 to 5 As shown, the utility model discloses a pressure storage sealing structure of a pressure storage flushing device, including a water tank 1 and a pressure storage component 2 arranged in the water tank 1. In this embodiment, the water tank 1 lies horizontally above the S-bend sewage pipe of the full-flat toilet, and the pressure storage component 2 is arranged in the water storage cavity 11 of the water tank 1 to store the water pressure when the water tank 1 is filled with water. The drainage pressure when the water tank 1 is drained comes from the water pressure stored in the pressure storage component 2.

[0023] The pressure storage assembly 2 includes a piston 21, a pressure storage spring 22, and a guide rod 23. The guide rod 23 is axially disposed within the water storage chamber 11. A sliding hole 215 extending vertically through the center of the piston 21 is formed. A guide sleeve is disposed within the sliding hole 215. The piston 21 slides up and down along the guide sleeve, which is sleeved on the outside of the guide rod 23. During this sliding process, the outer wall of the piston 21 tightly mates with the inner wall of the water storage chamber 11. The inner wall of the guide sleeve of the piston 21 tightly mates with the outer wall of the guide rod 23. The piston 21 divides the water storage chamber 11 into two upper and lower chambers that are not in fluid communication with each other. The pressure storage spring 22 is axially disposed within the water storage chamber 11, with its ends pressing against the inner wall of the water storage chamber 11 and the piston 21, respectively. When the piston 21 reaches its stop position, the pressure storage spring 22 is subjected to a predetermined flushing pressure. The water level within the water storage tank 1 determines the flushing volume. In this embodiment, the water storage tank 1 is configured to hold 3 liters of water.

[0024] The bottom end of the water storage tank 1 is provided with a water inlet 12 connected to the water storage chamber 11. A three-way joint 3 is provided on the water inlet 12, and the other two end joints of the three-way joint 3 are respectively the water inlet end interface 31 and the drainage end interface 32 of the water storage tank 1. A filter screen 4 is provided in the water storage chamber 11 and between the piston 21 and the water inlet 12. When water enters the water inlet end, impurities in the water are blocked on the mesh by the filter screen 4, preventing the impurities from entering the pressure storage component 2, grinding the piston 21 and the inner wall of the water storage chamber 11, affecting the operation of the piston 21, and improving the service life of the pressure storage component 2. When the drainage end is opened for drainage, the water in the water storage tank 1 is discharged through the water inlet 12 by the thrust of the pressure storage spring 22. At this time, the impurities intercepted on the filter screen 4 leave the filter screen 4 under the push of the water flow and are discharged through the drainage end of the three-way joint 3.

[0025] The pressure-storage spring 22 is a conical coil spring. The piston 21 has a cylindrical trapezoidal shape. A piston cavity 211 is defined at the top of the piston 21, and the bottom end of the pressure-storage spring 22 is connected to the bottom of the piston cavity 211. The piston 21 is axially slidable within the water storage chamber 11 via a guide rod 23, which limits the movement of the piston 21 and prevents it from shifting. The pressure-storage spring 22 uses a conical coil spring to store pressure, preventing it from tilting or deforming during compression. The compressed pressure-storage spring 22 is housed in the piston cavity 211 at the end of the piston 21. Given a fixed volume of the water tank 1, the water storage capacity of the water storage chamber 11 is increased, thereby increasing the flushing pressure.

[0026] The top of the water tank 1 is provided with a first through-hole 13 that communicates with the water storage chamber 11. When the water tank 1 is positioned horizontally at the rear end of the toilet, the first through-hole 13 is located on the lower tank wall. This through-hole 13 serves as a vent to expel air from the rear end of the water tank 1 when the water inlet piston 21 of the water tank 1 moves backward. It also serves as a drainage system to drain water from the rear end of the water tank 1 into the toilet bowl if the sealing structure of the piston 21 leaks.

[0027] The top and side surfaces of the skirt of the piston 21 are respectively provided with an upper sealing ring and a side sealing ring. The upper sealing ring includes a first sealing ring 212 and a second sealing ring 213, and the side sealing ring includes a third sealing ring 214.

[0028] A first sealing ring 212 and a second sealing ring 213 are respectively inlaid on the top surface of the piston 21's skirt, located inside and outside the opening of the piston chamber 211. A first annular boss 14 and a second annular boss 15 are respectively provided on the inner wall of the water storage chamber 11, located below the first through-hole 13, to closely engage with the first and second sealing rings 212 and 213. A third sealing ring 214 is inlaid on the outer wall of the piston 21's skirt, to closely engage with the inner wall of the water storage chamber 11. This comprehensively improves the sealing performance of the piston 21, preventing water from entering the rear end of the water storage chamber 11 during the piston 21's power accumulation activity.

[0029] The guide sleeve includes an upper guide sleeve 216 and a lower guide sleeve 217. An upper inlay groove and a lower inlay groove are respectively provided in the top opening and the bottom opening of the sliding hole 215. The upper guide sleeve 216 is inlaid in the upper inlay groove, and the lower guide sleeve 217 is inlaid in the lower inlay groove. The inner walls of the upper guide sleeve 216 and the lower guide sleeve 217 are in close contact with the outer wall of the guide rod 23. A water seal ring 218 and a sealing ring fixing sleeve 219 are inlaid in the lower inlay groove 2152 and below the lower guide sleeve 217 from top to bottom. A V-shaped groove 2181 is provided on the bottom surface of the water seal ring 218, and the V-shaped opening direction of the V-shaped groove 2181 is toward the sealing ring fixing sleeve 219. The sealing ring fixing sleeve is used to prevent the water sealing ring from falling out of the lower embedding groove. When water enters the water tank 1, the water pressure pushes the piston 21 to rise. During the rising process of the piston 21, the sealing ring fixing sleeve 219 is pushed upward, thereby pushing the V-shaped opening 2181 to expand, so that the water sealing ring 218 is in close contact with the rod wall of the guide rod 23, ensuring the sealing performance of the contact position between the sliding hole 215 and the guide rod 23, and preventing the water flow at the front end of the water tank 1 from entering the rear end of the water tank 1 through the sliding hole 215.

[0030] A baffle 231 is fixed to one end of the guide rod 23 . The guide rod 23 passes through the water tank 1 and the other end thereof is threadedly connected to a locking nut 232 , so that the guide rod 23 is detachably mounted on the water tank 1 .

[0031] The bottom of the water tank 1 is provided with a second through-hole 16, which communicates with the water storage chamber 11. A valve is installed on this second through-hole 16. When the water tank 1 is positioned horizontally at the rear end of the toilet, the second through-hole 16 is located on the upper tank wall. When water enters the water tank 1, the valve opens, allowing air at the front end of the water tank 1 to escape through the second through-hole 16, preventing air pressure from obstructing the water flow. The filter screen 4 has a trapezoidal structure that matches the piston 21. A recessed portion is provided at the bottom of the water tank 1 to accommodate the filter screen 4. The water inlet 12 is located on the wall of the water tank 1, to the side of the trapezoidal structure.

[0032] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A pressure storage seal structure for a pressure storage flushing device, characterized in that: It includes a water storage tank, a piston, a pressure storage spring and a guide rod. A guide sleeve is provided at the center of the piston. The piston slides on the outside of the guide rod through the guide sleeve, and the piston divides the water storage chamber into two upper and lower cavities that do not flow into each other. The pressure storage spring is axially placed in the water storage tank and its two ends are pressed against the inner wall of the water storage chamber and the piston respectively. The top surface and side surface of the skirt of the piston are respectively provided with an upper sealing ring and a side sealing ring that are in contact with the inner wall of the piston. The top end of the water storage tank is provided with a first through hole connected to the water storage chamber, and the bottom end is provided with a water inlet interface and a water outlet interface.

2. The pressure storage seal structure of a pressure storage flushing device according to claim 1, characterized in that: The top end of the piston is provided with a piston cavity, and the bottom end of the pressure storage spring is connected to the cavity bottom of the piston cavity.

3. The pressure storage seal structure of a pressure storage flushing device according to claim 2, characterized in that: The upper sealing ring includes a first sealing ring and a second sealing ring, which are respectively inlaid on the top surface of the skirt of the piston and located on the inner and outer sides of the cavity opening of the piston cavity. The top inner wall of the water storage cavity and below the first through hole are provided with a first annular boss and a second annular boss, which are in close contact with the first and second sealing rings respectively.

4. The pressure storage seal structure of a pressure storage flushing device according to claim 1, characterized in that: The side sealing ring is a third sealing ring inlaid on the outer side wall of the skirt portion of the piston.

5. The pressure storage seal structure of a pressure storage flushing device according to claim 1, characterized in that: A second through hole communicating with the water storage cavity is provided at the bottom end of the water storage tank, and a switch valve is provided on the second through hole.

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