Pressure stabilizer for secondary distribution of drinking water

Abstract

The utility model relates to the technical field of water supply equipment, and provides a pressure stabilizer for secondary distribution of drinking water, which comprises a connecting body, the connecting body is provided with an annular connecting part, the annular connecting part is provided with an annular connecting groove, a cover body is pressed above the connecting body, the cover body is provided with a through hole, and a pressing space is formed between the connecting body and the cover body. The metal annular piece is cast in the annular connecting groove, and the connecting piece penetrates through the cover body to be connected with the metal annular piece. By means of the technical scheme, the problems that in the prior art, a PE-FRP surge tank is low in yield, short in service life and high in production cost are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply equipment, and in particular to a voltage stabilizer for secondary distribution of drinking water. Background Art

[0002] The pressure-stabilizing tank is mainly used in thermal systems and water supply systems. In thermal systems such as air conditioners, boilers, heat pumps, and water heaters, it is used in conjunction with water pumps to save electricity and reduce energy consumption by compressing and expanding the capsule with air. Valves and pump switches in the water supply system will cause water hammer impacts, and the pressure-stabilizing tank can absorb this impact and can be used to replenish water in the system, reduce the number of pump starts and stops, extend the service life of the pump, and save electricity. However, the PE-FRP pressure-stabilizing tank of the prior art has a low production yield rate, a high defective rate, and a short service life due to structural reasons. Utility Model Content

[0003] The utility model provides a voltage stabilizer for secondary distribution of drinking water, which solves the problems of low yield, short service life and high production cost of PE-FRP voltage stabilizer tanks in the related art.

[0004] The technical solution of the utility model is as follows:

[0005] A voltage stabilizer for secondary distribution of drinking water, comprising

[0006] A connector, the connector having an annular connecting portion, the annular connecting portion having an annular connecting groove,

[0007] A cover body, the cover body is pressed on the connecting body, the cover body has a through hole, and a compression space is formed between the connecting body and the cover body,

[0008] a metal ring, wherein the metal ring is cast in the annular connecting groove,

[0009] A connecting piece passes through the cover body and is connected to the metal ring.

[0010] As a further technical solution, the cover body has an annular convex edge, the inner diameter of the annular convex edge is equal to the outer diameter of the annular connecting portion, and the annular convex edge abuts against the connecting body.

[0011] As a further technical solution, the connector has a connecting end surface, and the connecting end surface and the annular connecting portion are respectively located on two sides of the connector.

[0012] As a further technical solution, the connector has a conical annular surface, the inner side of the conical annular surface is connected to the annular connecting portion, and the outer side of the conical annular surface is connected to the connecting end surface.

[0013] As a further technical solution, the annular convex edge abuts against the conical annular surface.

[0014] As a further technical solution, it also includes

[0015] The tank body has a connecting end, the connecting end is hot-melt connected to the connecting end surface, the connecting end and the connecting end surface are both annular, and the connecting port is located at the bottom of the tank body.

[0016] The airbag has a second connecting portion and a bag portion, the second connecting portion is located in the compression space, the bag portion is located in the tank body, a buffer cavity is formed between the airbag and the tank body, and the buffer cavity has the communication port,

[0017] A tee piece is arranged at the communication port.

[0018] As a further technical solution, it also includes

[0019] A water inlet pipeline and a water outlet pipeline, wherein the water inlet pipeline and the water outlet pipeline are connected to the tee piece,

[0020] an air intake pipeline, one end of which is connected to the through hole of the cover body,

[0021] A barometer is arranged on the air intake pipeline and is used to detect the air pressure in the airbag.

[0022] As a further technical solution, it also includes

[0023] A one-way valve is arranged at the other end of the air intake pipeline.

[0024] As a further technical solution, it also includes

[0025] A base, on which the tank body is vertically arranged.

[0026] The working principle and beneficial effects of the utility model are:

[0027] In the utility model, a connecting structure is designed for connecting the air pressure container of the PE-FRP low-pressure tank with the main body of the low-pressure tank, a connecting body is used as the base of the connecting structure, a cover body is designed for connecting with the connecting body, a compression space is formed between the connecting body and the cover body, and the compression space is used to fix rubber or other flexible and elastic workpieces, wherein the connecting body is made of non-metallic material and the cover body is made of metal material. Considering that metal parts and non-metallic parts are connected by connecting parts, especially metal connecting parts, such as bolts, the connecting body is easily separated from the connecting parts, so that the compression space is opened and the air pressure container cannot be compressed. In order to avoid such problems, a metal ring is designed, and the metal ring is cast in an annular connecting groove so that the metal ring is firmly connected to the annular connecting part, and at the same time, the connecting part is threadedly connected to the metal ring, so that the connection between the connecting part and the connecting body is more stable.

[0028] Compared with the prior art, the innovative design of the connector and the connector designs the one-piece blow-molded low-pressure tank as a split structure. The core point is to cast the metal ring on the connector. The prior art places the metal ring into the designated position of the low-pressure tank in advance when blow-molding the low-pressure tank. Compared with the split structure design, the overall blow molding of the prior art is prone to water leakage during use due to the different wall thickness of the low-pressure tank during the production process, especially at the position where the wall thickness changes, and the breakage rate is extremely high. Compared with the overall blow molding of the prior art, casting the metal ring on the connector makes the overall structure of the connector more stable than blow molding, and the metal ring cast on the connector will not cause damage to the connector. Compared with the prior art, the connector with a split structure and the position where the wall thickness of the low-pressure tank changes, the casting process avoids the leakage that may occur due to the change in wall thickness compared to the blow molding process. At the same time, the connector and the low-pressure tank are both PE-FRP products of the same material, and can be connected using a hot melt process. The thickness of the hot melt part is further increased due to mutual fusion, making the structure of the low-pressure tank more stable and not easy to break, thereby improving the yield rate of the low-pressure tank. In summary, the connection structure effectively improves the service life and yield rate of the low-pressure tank, while reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0030] Figure 1 It is a schematic diagram of the structure of the utility model;

[0031] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0032] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of view B.

[0033] In the figure: connector 1, annular connecting part 101, annular connecting groove 102, connecting end face 103, conical annular face 104, cover body 2, through hole 201, compression space 202, annular ridge 203, metal annular part 3, connector 4, tank body 5, connecting end 501, air bag 6, second connecting part 601, bag part 602, buffer cavity 603, connecting port 604, tee piece 7, water inlet pipe 8, water outlet pipe 9, air inlet pipe 10, pressure gauge 11, one-way valve 12, base 13. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0035] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0036] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] Reference Figure 1~Figure 3, which is the first embodiment of the utility model, proposes a pressure stabilizer for secondary distribution of drinking water, including a connector 1, the connector 1 has an annular connecting portion 101, the annular connecting portion 101 has an annular connecting groove 102, a cover body 2 is pressed above the connector 1, the cover body 2 has a through hole 201, a pressing space 202 is formed between the connector 1 and the cover body 2, a metal ring 3 is cast in the annular connecting groove 102, and a connector 4 passes through the cover body 2 and is connected to the metal ring 3.

[0039] In this embodiment, a connecting structure is designed for connecting the air pressure container of the PE-FRP low-pressure tank with the low-pressure tank body, the connector 1 is used as the base of the connecting structure, and the cover 2 is designed for connecting with the connector 1, and a compression space 202 is formed between the connector 1 and the cover 2, and the compression space 202 is used to fix with rubber or other flexible and elastic workpieces, wherein the connector 1 is made of non-metallic material and the cover 2 is made of metal material. Considering that the metal parts and non-metallic parts are connected by a connector 4, especially a metal connector 4, such as a bolt, the connector 1 is easily separated from the connector 4, so that the compression space 202 is opened, and the air pressure container cannot be compressed. In order to avoid such problems, a metal ring 3 is designed, and the metal ring 3 is cast in the annular connecting groove 102, so that the metal ring 3 is firmly connected to the annular connector 4, and at the same time, the connector 4 is threadedly connected to the metal ring 3, so that the connection between the connector 4 and the connector 1 is more stable.

[0040] Compared with the prior art, the innovative design of the connector 1 and the connector 4 designs the low-pressure tank blow-molded as a split structure. The core point is to cast the metal ring 3 on the connector 1. The prior art places the metal ring 3 into the specified position of the low-pressure tank in advance when blow-molding the low-pressure tank. Compared with the split structure design, the overall blow molding of the prior art is prone to water leakage during use due to the different wall thickness of the low-pressure tank during the production process, especially at the position where the wall thickness changes, and the breakage rate is extremely high. Compared with the overall blow molding of the prior art, casting the metal ring 3 on the connector 1 makes the overall structure of the connector 1 more stable than blow molding, and the metal ring 3 cast on the connector 1 will not cause damage to the connector 1. Compared with the prior art, the connector 1 with a split structure is at the position where the wall thickness of the low-pressure tank changes. Compared with the blow molding process, the casting process avoids the leakage that may occur due to the change in wall thickness. At the same time, the connector 1 and the low-pressure tank are both PE-FRP products of the same material, and can be connected using a hot melt process. The thickness of the hot melt part is further increased due to mutual fusion, making the structure of the low-pressure tank more stable and not easy to break, thereby improving the yield rate of the low-pressure tank. In summary, the connection structure effectively improves the service life and yield rate of the low-pressure tank, while reducing production costs.

[0041] Furthermore, the cover body 2 has an annular convex edge 203 , the inner diameter of the annular convex edge 203 is equal to the outer diameter of the annular connecting portion 101 , and the annular convex edge 203 abuts against the connecting body 1 .

[0042] In this embodiment, in addition to the basic pressing function, the cover body 2 is also designed with an annular flange 203. The inner diameter of the annular flange 203 is exactly equal to the outer diameter of the annular connecting portion 101 of the connector 1, ensuring that the two can be tightly abutted. This design not only enhances the contact area between the cover body 2 and the connector 1, but also further improves the overall sealing performance through physical tight fit. The design principle of the annular flange 203 is to add a flange that matches the outer diameter of the connector 1. When the cover body 2 is pressed on the top of the connector 1, the flange can be perfectly embedded in the outer edge of the connector 1 to form a firm sealing ring, effectively preventing the medium from penetrating from the gap between the two. This structural interlocking design can maintain the stability of the connection structure even in the face of high pressure or long-term vibration working environment, reducing safety hazards and performance degradation caused by leakage of the first connecting portion 301. In summary, by adding an annular flange 203 to the cover body 2, not only the sealing effect is optimized, but also the physical stability of the connection structure is improved, so that the connection structure can still maintain a good working condition under various harsh working conditions, thereby improving the reliability and service life of the entire low-pressure tank system.

[0043] Furthermore, the connector 1 has a connecting end surface 103 , and the connecting end surface 103 and the annular connecting portion 101 are respectively located on two sides of the connector 1 .

[0044] In this embodiment, the connector 1 is designed with two obvious functional surfaces: a connection end face 103 and an annular connection face. These two faces are located on both sides of the connector 1, and the connection end face 103 is directly connected to the low-pressure pressure tank. The compatibility and sealing with the docking components are taken into consideration during the design. The end face is thickened to ensure the stability of the hot-melt connection with the target component. The annular connection portion 101 located on the other side of the connector 1 is provided with an annular connection groove 102 for accommodating the metal ring 3. This design not only enhances the structural stability of the connector 1, but also provides a reliable installation foundation for the subsequent threaded connection of the connector 4. Through such a design, the connector 1 is more compact in structure, while ensuring the independence and professionalism of different functional areas. The separate layout of the connection end face 103 and the annular connection portion 101 is convenient for assembly and maintenance, and more convenient for automated production. At the same time, it ensures the stability and sealing of the overall connection structure, effectively avoids leakage problems, and improves the reliability and service life of the system.

[0045] Furthermore, the connector 1 has a conical annular surface 104 , the inner side of which is connected to the annular connecting portion 101 , and the outer side of which is connected to the connecting end surface 103 .

[0046] In this embodiment, the connector 1 is newly structured with a conical annular surface 104, and this design ingeniously transitions the annular connection portion 101 to the connection end face 103. The inner side of the conical annular surface 104 is adjacent to the annular connection portion 101, ensuring a seamless transition between the connection groove area and the main structure, while the outer side thereof smoothly transitions to the connection end face 103, which not only enhances the continuity and aesthetics of the overall structure, but more importantly, the conical design helps to disperse stress and improves the connector 1's ability to withstand external pressure, especially when the connection structure is subjected to forces in different directions, the conical annular surface 104 can effectively buffer stress, reduce local stress concentration, and prevent damage or deformation of the first connection portion 301. In addition, the conical design can also have a favorable effect on the compression and distribution of the connector 1, further enhancing the physical properties of the connector 1. In summary, the design of the conical annular surface 104 not only enhances the mechanical properties of the connector 1, but also makes the entire connection structure more stable and reliable, reflecting the innovation and practicality of the design.

[0047] Furthermore, the annular convex edge 203 abuts against the conical annular surface 104 .

[0048] In this embodiment, the annular convex edge 203 of the cover body 2 is not only precisely matched with the outer diameter of the annular connecting portion 101 of the connecting body 1, but is also specially designed to be closely abutted with the conical annular surface 104 on the connecting body 1. The innovation of this design is that, through the close combination of the annular convex edge 203 and the conical annular surface 104, not only the sealing of the connection structure is further enhanced, but also the physical stability of the entire system is improved. The inclined surface design of the conical annular surface 104 forms a fitting surface with the inner side of the annular convex edge 203. Such a contact surface is more self-locking than a plane contact, and even in the case of external impact or vibration, the possibility of loosening can be effectively reduced, ensuring the tightness and stability of the first connecting portion 301. At the same time, this combination of the conical surface and the convex edge can also disperse the pressure acting on the first connecting portion 301 to a certain extent, reduce the burden of a single contact point, and extend the service life. In addition, this design is also convenient for the annular convex edge 203 to slide along the conical annular surface 104 during the assembly process, so as to achieve accurate positioning and tightening, improve the convenience and efficiency of assembly, and also facilitate subsequent inspection and maintenance. In summary, the delicate coordination between the annular convex edge 203 and the conical annular surface 104 not only improves the sealing and stability of the connection structure, but also optimizes the assembly process.

[0049] Furthermore, it also includes a tank body 5, which has a connecting end 501, which is hot-melt connected to the connecting end face 103, and the connecting end 501 and the connecting end face 103 are both annular. The connecting port 604 is located at the bottom of the tank body 5, and the airbag 6 has a second connecting portion 601 and a bag portion 602. The second connecting portion 601 is located in the compression space 202, and the bag portion 602 is located in the tank body. A buffer cavity 603 is formed between the airbag 6 and the tank body 5, and the buffer cavity 603 has a connecting port 604. The tee piece 7 is arranged at the connecting port 604.

[0050] In this embodiment, one of the core components of the voltage stabilizer is the tank body 5, one end of which is designed with a connecting end 501, and the connecting end 501 is tightly combined with the connecting end face 103 of the connecting structure through hot melt connection technology. The connecting end 501 and the connecting end face 103 are both annular designs, which ensure seamless connection between the two and improve the overall sealing performance. An annular opening is provided in the connecting end 501, which provides space for the installation of the connecting port 604. The airbag 6 is a key component of the voltage stabilizer and is divided into a second connecting portion 601 and a bag portion 602. The second connecting portion 601 is located in the compression space 202 formed by the cover body 2 and the connector 1, ensuring the stable connection between the airbag 6 and the connecting structure. The bag portion 602 is located inside the tank body 5, forming a compressible space for storing gas and realizing pressure regulation. The buffer cavity 603 formed between the airbag 6 and the tank body 5 provides a channel for gas flow, and the connecting port 604 is located in this buffer cavity 603, which is an important interface for gas in and out. The three-way piece 7 installed at the connecting port 604 plays the role of controlling the gas inlet and outlet paths. It can connect to external pipelines to realize the input, output or two-way flow of gas, and adjust the pressure state inside the tank body 5 as needed. The introduction of the three-way piece 7 enhances the flexibility and functionality of the voltage stabilizer, allowing the entire system to adapt to a wider range of application scenarios. In summary, the voltage stabilizer adopts an innovative connection structure and integrates the tank body 5, the airbag 6 and the three-way piece 7 to construct an efficient, sealed and adjustable voltage stabilization system, which is suitable for various application environments that require precise pressure control, such as water treatment, industrial automation control, etc.

[0051] Compared with the prior art voltage regulator, the overall use of PE-FRP material tank body 5 and stainless steel material tank body 5 reduces welds, thereby avoiding leakage at the welds and water corrosion and dissolution at the welds, improving the safety of the overall voltage regulator equipment, and avoiding contamination of drinking water by welds. Compared with the prior art PE-FRP voltage regulator, the overall structure of the voltage regulator tank using the connector 1 is more stable, the overall stress distribution and material strength are more uniform and stable, and it is not easy to leak. Compared with the prior art voltage regulator tank, the service life is longer, and the PE-FRP material makes the overall weight lighter, which is more convenient for operation and maintenance and replacement of damaged voltage regulator tanks.

[0052] Furthermore, it also includes a water inlet pipeline 8 and a water outlet pipeline 9, which are connected to the tee piece 7, one end of the air inlet pipeline 10 is connected to the through hole 201 of the cover body 2, and a barometer 11 is arranged on the air inlet pipeline 10 for detecting the air pressure in the airbag 6.

[0053] In this embodiment, in order to realize the normal working cycle of the pressure stabilizer, an inlet pipe 8 and an outlet pipe 9 are added to the design, which are connected to the three-way piece 7. Such a design allows an external water source to enter the inside of the pressure stabilizer through the inlet pipe 8, and the regulated water flow can be output through the outlet pipe 9, ensuring the smooth flow of water and meeting the water supply needs in different scenarios. The setting of the air inlet pipe 10 provides a way to inflate the airbag 6, and one end of the air inlet pipe 10 is connected to the through hole 201 of the cover body 2. This design allows an external air source to directly inflate or adjust the air pressure of the airbag 6 through the air inlet pipe 10, laying the foundation for the air pressure regulation function of the pressure stabilizer. A barometer 11 is installed on the air inlet pipe 10, which is a crucial monitoring component. The barometer 11 can detect and display the air pressure value inside the airbag 6 in real time, providing the operator with intuitive air pressure data, ensuring that the air pressure inside the airbag 6 is always maintained within the preset safety and working range, thereby ensuring that the voltage stabilizer can operate stably and efficiently, and avoiding system failure or reduced efficiency due to abnormal air pressure. When the water supply pipeline is suddenly started and stopped, the water hammer effect caused by the water pump at the end of the water supply pipeline is reduced and eliminated under the action of the airbag 6. In summary, the voltage stabilizer not only improves its water-gas two-phase regulation system through the integrated design of the water inlet pipeline 8, the water outlet pipeline 9, the air inlet pipeline 10 and the barometer 11, but also enhances the monitoring and control capabilities of the system, ensuring the accuracy of the voltage stabilization process and the reliability of equipment operation.

[0054] Furthermore, a one-way valve 12 is included, and the one-way valve 12 is arranged at the other end of the intake pipe 10 .

[0055] In this embodiment, a one-way valve 12 is provided at the other end of the air intake line 10. The one-way valve 12 is a valve that controls the flow of fluid in only one direction. It is designed to ensure that gas can only enter the airbag 6 from the outside and cannot flow back to the air intake line 10. The addition of the one-way valve 12 effectively prevents the gas in the airbag 6 from flowing back to the air intake system when the pressure fluctuates or the external pressure of the system changes suddenly, which is crucial to maintaining the stability of the air pressure in the airbag 6. It can prevent external factors from interfering with the pressure of the airbag 6 and ensure the continuity and accuracy of the operation of the stabilizer. Through the one-way flow characteristics of the one-way valve 12, it can effectively prevent external contaminants from flowing back into the airbag 6 or the air pressure system through the air intake line 10, protect the cleanliness and safety of the entire pneumatic system, and extend the service life of the equipment. In summary, the stabilizer improves the stability and reliability of the air pressure regulation system through the integration of the one-way valve 12, prevents air pressure backflow and external pollution, and further optimizes the working performance and safety of the stabilizer.

[0056] Furthermore, it also includes a base 13 , and the tank body 5 is vertically arranged on the base 13 .

[0057] In this embodiment, the voltage stabilizer is equipped with a base 13, which serves as a support platform for the entire device and provides a stable installation position for the tank body 5. The design of the base 13 takes into account the adaptability and load-bearing capacity of the ground, ensuring that the voltage stabilizer is firmly placed under various ground conditions. The tank body 5 is vertically arranged on the base 13. This layout is conducive to the efficient use of space, especially in an installation environment with limited space. Vertical installation not only saves space, but also helps the natural flow of air and water, which is conducive to improving the voltage stabilization efficiency and the convenience of maintenance operations. The use of the base 13 significantly improves the stability of the voltage stabilizer, and can effectively reduce the shaking of the equipment even when subjected to external impact or vibration, ensuring the smooth and safe operation. At the same time, the base 13 is usually designed with fixing holes or screw holes, which is convenient for fixing the voltage stabilizer to the ground through fasteners such as bolts, further enhancing the firmness of the installation. In summary, the voltage stabilizer is arranged vertically on the base 13 and the tank body 5 is arranged vertically, which not only improves the installation flexibility and stability of the equipment, but also provides guarantees for operational safety and maintenance convenience, which is a practical and necessary improvement in the design of the voltage stabilizer.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A voltage stabilizer for secondary distribution of drinking water, characterized in that: include A connecting body (1), the connecting body (1) having an annular connecting portion (101), the annular connecting portion (101) having an annular connecting groove (102), a cover body (2), the cover body (2) being pressed onto the connecting body (1), the cover body (2) having a through hole (201), and a compression space (202) being formed between the connecting body (1) and the cover body (2), a metal ring (3), wherein the metal ring (3) is cast in the annular connecting groove (102), A connecting piece (4), wherein the connecting piece (4) passes through the cover body (2) and is connected to the metal ring piece (3).

2. A pressure stabilizer for secondary distribution of drinking water according to claim 1, characterized in that: The cover body (2) has an annular convex edge (203), the inner diameter of the annular convex edge (203) is equal to the outer diameter of the annular connecting portion (101), and the annular convex edge (203) abuts against the connecting body (1).

3. A pressure stabilizer for secondary distribution of drinking water according to claim 2, characterized in that: The connecting body (1) has a connecting end surface (103), and the connecting end surface (103) and the annular connecting portion (101) are respectively located on two sides of the connecting body (1).

4. A pressure stabilizer for secondary distribution of drinking water according to claim 3, characterized in that: The connecting body (1) has a conical annular surface (104), the inner side of the conical annular surface (104) is connected to the annular connecting portion (101), and the outer side of the conical annular surface (104) is connected to the connecting end surface (103).

5. A pressure stabilizer for secondary distribution of drinking water according to claim 4, characterized in that: The annular convex edge (203) abuts against the conical annular surface (104).

6. A pressure stabilizer for secondary distribution of drinking water according to claim 3, characterized in that: Also includes A tank body (5), the tank body (5) having a connection end (501), the connection end (501) being hot-melt-connected to the connection end surface (103), the connection end (501) and the connection end surface (103) both being annular, the communication port (604) being located at the bottom of the tank body (5), an airbag (6), the airbag (6) comprising a second connecting portion (601) and a bag portion (602), the second connecting portion (601) being located in the compression space (202), the bag portion (602) being located in the tank body (5), a buffer cavity (603) being formed between the airbag (6) and the tank body (5), the buffer cavity (603) having the communication port (604), A three-way piece (7), wherein the three-way piece (7) is arranged at the communication port (604).

7. A pressure stabilizer for secondary distribution of drinking water according to claim 6, characterized in that: Also includes a water inlet pipeline (8) and a water outlet pipeline (9), wherein the water inlet pipeline (8) and the water outlet pipeline (9) are connected to the tee piece (7), an air intake pipeline (10), one end of the air intake pipeline (10) being in communication with the through hole (201) of the cover body (2), A barometer (11), the barometer (11) being arranged on the air intake pipeline (10) and used for detecting the air pressure in the airbag (6).

8. A pressure stabilizer for secondary distribution of drinking water according to claim 7, characterized in that: Also includes A one-way valve (12), wherein the one-way valve (12) is arranged at the other end of the air intake pipeline (10).

9. A pressure stabilizer for secondary distribution of drinking water according to claim 8, characterized in that: Also includes A base (13), the tank body (5) being vertically arranged on the base (13).

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