Pressure tank with built-in elastic filter

Abstract

The application provides a pressure tank with built-in elastic filter material, which is characterized by comprising a tank body, an air bag, filter cotton and a water squeezing spring. The air bag is arranged in the tank body. The filter cotton is filled between the tank body and the air bag. The water squeezing spring is arranged in the filter cotton, one end of the water squeezing spring abuts against the tank body, and the other end of the water squeezing spring abuts against the air bag. With the stretching and contraction of the air bag pushing the water squeezing spring, the filter cotton is compressed or relaxed along the stretching and contraction direction of the spring. The design makes the filter cotton not need to rely on the elasticity of the material itself to adapt to the change of the air bag, but the elastic force is generated by the water squeezing spring. The dynamic adjustment helps to keep the filter cotton in a tight filling state, and even under the continuous extrusion of the air bag, the influence of excessive plastic deformation on the filtering effect can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of environmental protection, and particularly relates to a pressure tank with built-in elastic filter material. BACKGROUND

[0002] In the existing field of water treatment or air purification, in order to improve the filtering efficiency and reduce the size of the equipment, a pressure tank with built-in elastic filter material is usually used as a filtering device. The basic structure of this kind of device usually includes a tank body, a gas bag arranged in the tank body, and filter cotton filled between the tank body and the gas bag. The filter cotton, as the main filtering medium, directly affects the efficiency and effect of the entire filtering system.

[0003] Specifically, a typical pressure tank with built-in elastic filter material is characterized in that a gas bag is arranged in the tank body, filter cotton is filled between the gas bag and the tank body, when the gas bag is contracted, the tank body is filled with liquid, when the gas bag is expanded, the water in the filter cotton is pressed by the gas bag, so as to pass through the filter cotton and be discharged from the water outlet of the pressure tank, and the water has a filtering effect because it passes through the filter cotton.

[0004] However, in actual application, this design has a problem. When the gas bag presses the filter cotton to discharge the water therein, because the filter cotton has a certain elasticity and plasticity, the continuous pressing will cause plastic deformation of the filter cotton. This deformation will make the filter cotton no longer tightly fill the entire tank body, so that gaps are formed between the tank body and the filter cotton. These gaps not only reduce the effective filtering area of the filter cotton, but also make the unfiltered water or air directly flow through the gaps, thereby causing a significant decrease in the filtering effect. At present, the method to solve the plastic deformation of the filter cotton is to directly replace the pressure tank. This method is not environmentally friendly and increases the use cost of the equipment.

[0005] Therefore, how to ensure that the filter cotton is pressed by the gas bag while avoiding the influence caused by the plastic deformation of the filter cotton due to the pressing of the gas bag, and further ensuring that the filter cotton can always tightly fill the tank body, becomes a technical problem to be solved for the design of the current pressure tank with built-in elastic filter material. SUMMARY

[0006] Therefore, it is necessary to provide a pressure tank with built-in elastic filter material to solve the above problems.

[0007] Embodiments of the present application provide a pressure tank with built-in elastic filter material, which comprises:

[0008] a tank body;

[0009] a gas bag arranged in the tank body;

[0010] filter cotton filled between the tank body and the gas bag;

[0011] A water squeezing spring is arranged in the filter cotton, one end of the water squeezing spring abuts against the tank body, and the other end of the water squeezing spring abuts against the air bag.

[0012] When the water squeezing spring is extended or retracted, the water squeezing spring drives the filter cotton to compress or relax along the extension or retraction direction of the water squeezing spring.

[0013] In at least one embodiment of the present application, the tank body has a first face and a second face away from the first face, the pressure tank with the built-in elastic filter element further comprises a water outlet in communication with the tank body, the water outlet is located on the second face, the air bag penetrates through the first face to communicate with the outside, the pressure tank with the built-in elastic filter element has a plurality of water squeezing springs, and the plurality of water squeezing springs are located between the first face and the second face.

[0014] In at least one embodiment of the present application, the water squeezing spring comprises:

[0015] A spring body, one end of which is fixed to the tank body, and the other end of which abuts against the air bag;

[0016] A bellows, the spring body is arranged in the bellows, and two ends of the bellows are respectively fixed to two ends of the spring body;

[0017] A drainage plate, a plurality of drainage plates are respectively fixed to a plurality of pipe joints of the bellows, and the drainage plate extends into the filter cotton;

[0018] The drainage plate has a first extrusion face, the first extrusion face is located in the filter cotton, and the first extrusion face is perpendicular to the extension direction of the spring body.

[0019] In at least one embodiment of the present application, the drainage plate comprises a first plate body and two second plate bodies, the first plate body has two first extrusion faces, and the two first extrusion faces are located at two ends of the first plate body in the extension direction of the spring body.

[0020] The two second plate bodies are symmetrically arranged on the side of the first plate body away from the first face and are respectively located on the two first extrusion faces, the second plate body has a second extrusion face, and the opening of the included angle a between the second extrusion face on one second plate body and the second extrusion face on the other second plate body arranged on the same first plate body is away from the bellows.

[0021] In at least one embodiment of the present application, the water squeezing spring further comprises a fitting pad arranged at one end of the spring body away from the tank body, and the fitting pad is fitted with the air bag.

[0022] In at least one embodiment of the present application, the tank body is provided with a supporting leg, and the supporting leg is located on the second face.

[0023] In at least one embodiment of the present application, the pressure tank with built-in elastic filter material further comprises a one-way valve, and the one-way valve is arranged between the water outlet and the tank body.

[0024] In at least one embodiment of the present application, the pressure tank with built-in elastic filter material further comprises a vent arranged on the tank body, and the vent is in communication with the air bag and located on the first face.

[0025] In at least one embodiment of the present application, the pressure tank with built-in elastic filter material further comprises a gas pump arranged between the vent and the air bag.

[0026] In at least one embodiment of the present application, the pressure tank with built-in elastic filter material further comprises a plurality of water inlets in communication with the water outlet, and the plurality of water inlets are arranged on the tank body and the plurality of water outlets are arranged around the vent.

[0027] The pressure tank with built-in elastic filter material provided above is designed with a water-pressing spring. With the expansion and contraction of the water-pressing spring pushed by the air bag, the filter cotton is compressed or relaxed along the expansion and contraction direction of the spring. This design makes the filter cotton not need to rely on the elasticity of its own material to adapt to the changes of the air bag, but the elastic force is generated by the water-pressing spring. This dynamic adjustment helps to maintain the tight filling state of the filter cotton, and even under the continuous extrusion of the air bag, it can also avoid the influence of excessive plastic deformation on the filtering effect. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural perspective view of the pressure tank with built-in elastic filter material;

[0029] Figure 2 It is a structural perspective view of the pressure tank with built-in elastic filter material;

[0030] Figure 3 It is a structural schematic view of the inside of the air bag of the pressure tank with built-in elastic filter material when the air bag is not inflated;

[0031] Figure 4 It is a structural schematic view of the inside of the air bag of the pressure tank with built-in elastic filter material when the air bag is inflated;

[0032] Figure 5 It is an exploded view of the water-pressing spring;

[0033] Figure 6 It is a structural schematic view of the water-pressing spring arranged on the air bag and not extruded by the air bag;

[0034] Figure 7Structure diagram of the water-extruding spring when being compressed by the air bag;

[0035] Figure 8 Structure diagram of the water-extruding spring when being compressed by the air bag;

[0036] Figure 9 Structure diagram of the water-extruding spring when being compressed by the air bag;

[0037] Figure 10 Structure diagram of the water-extruding spring when being compressed by the air bag.

[0038] Main component symbol description

[0039] 100, pressure tank with built-in elastic filter material; 10, tank body; 11, support foot; 20, filter cotton; 30, water-extruding spring; 31, spring body; 32, corrugated pipe; 321, pipe joint; 33, drainage plate; 331, first plate body; 332, second plate body; 333, first extrusion surface; 334, second extrusion surface; 34, bonding pad; 40, water outlet; 50, water inlet; 60, air vent; 70, air pump; 80, one-way valve; 90, air bag; b, first surface; c, second surface. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0041] It should be noted that when one component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a middle component. When one component is considered to be "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and the like used herein are for illustrative purposes only.

[0042] The embodiments of the present application provide a pressure tank with built-in elastic filter material, comprising:

[0043] tank body;

[0044] air bag provided in the tank body;

[0045] filter cotton filled between the tank body and the air bag;

[0046] water-extruding spring provided in the filter cotton, one end of the water-extruding spring abutting against the tank body, and the other end of the water-extruding spring abutting against the air bag;

[0047] When the squeeze spring is stretched or contracted, the squeeze spring drives the filter cotton to compress or expand along the stretching or contracting direction of the squeeze spring. The squeeze spring is stretched or contracted by the air bag, and it drives the filter cotton to compress or expand along the stretching or contracting direction of the squeeze spring. This design makes the filter cotton not rely on the elasticity of its own material to adapt to the changes of the air bag, but the elasticity of the squeeze spring. This dynamic adjustment helps to keep the filter cotton tightly packed, and avoids excessive plastic deformation even under the continuous squeezing of the air bag.

[0048] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0049] Please refer to Figures 1-10 The embodiments of the present application provide a pressure tank 100 with built-in elastic filter material, which is characterized by comprising a tank body 10, an air bag 90, filter cotton 20, and a squeeze spring 30. The air bag 90 is arranged in the tank body 10. The filter cotton 20 is filled between the tank body 10 and the air bag 90. The squeeze spring 30 is arranged in the filter cotton 20, one end of the squeeze spring 30 abuts against the tank body 10, and the other end of the squeeze spring 30 abuts against the air bag 90. When the squeeze spring 30 is stretched or contracted, the squeeze spring 30 drives the filter cotton 20 to compress or expand along the stretching or contracting direction of the squeeze spring 30.

[0050] Specifically, as the bearing structure of the entire filtering system, the air bag 90, the filter cotton 20, and the squeeze spring 30 are provided with installation space. The air bag 90 acts as a squeezing element in the pressure tank, and squeezes the moisture (or air) in the filter cotton 20 by expanding and contracting to achieve the filtering effect. The filter cotton 20 acts as the main filtering medium, and intercepts and removes impurities in the fluid. The squeeze spring 30 is arranged in the filter cotton 20, one end of the squeeze spring 30 abuts against the tank body 10, and the other end of the squeeze spring 30 abuts against the air bag 90. When the air bag 90 squeezes the filter cotton 20, the squeeze spring 30 can drive the filter cotton 20 to compress or expand along the stretching or contracting direction of the squeeze spring 30, thereby avoiding plastic deformation of the filter cotton 20. The filter cotton 20 is kept tightly packed: through the elastic action of the squeeze spring 30, it is ensured that the filter cotton 20 is always tightly packed in the tank body 10, the formation of gaps is avoided, the effective filtering area of the filter cotton 20 is maintained, the fluid is ensured to be fully filtered, the damage of the filter cotton 20 caused by plastic deformation is reduced, and the replacement cost is reduced. When the air bag 90 expands, the squeeze spring 30 is contracted by the squeezing of the air bag 90, and drives the filter cotton 20 to compress along the stretching or contracting direction of the squeeze spring 30. At this time, the water (or air) in the filter cotton 20 is squeezed out and discharged through the water outlet 40. When the air bag 90 contracts, the squeeze spring 30 restores to its original shape, and drives the filter cotton 20 to expand, thereby restoring the initial state of the filter cotton 20 and preparing for the next filtering.

[0051] In one embodiment, the tank 10 has a first face b and a second face c opposite to the first face b, the pressure tank with built-in elastic filter 100 further comprises a water outlet 40 in communication with the tank 10, the water outlet 40 is located on the second face c, the air bag 90 is in communication with the outside through the first face b, and the pressure tank with built-in elastic filter 100 has a plurality of water squeezing springs 30 located between the first face b and the second face c.

[0052] Specifically, the tank 10 has a first face b and a second face c opposite to the first face b, the first face b and the second face c are two main surfaces of the tank 10, which provide the basis for the installation and positioning of other components (such as the air bag 90, the water outlet 40, the water squeezing spring 30, etc.). The first face b is usually used to install components such as the air bag 90 and the air vent 60, while the second face c is used to set the water outlet 40 and possibly the supporting feet 11, etc. The water outlet 40 is the passage for the filtered liquid (such as water) to exit the tank 10. By setting it on the second face c, it can ensure that the filtered liquid can be smoothly discharged, while avoiding interference with components such as the air bag 90 on the first face b. The water outlet 40 is located on one side of the tank 10 (the second face c), which is convenient for connecting with external pipelines, thereby realizing the transportation and reuse of the liquid. Through the opening on the first face b, the air bag 90 can be inflated and deflated, thereby controlling the expansion and contraction of the air bag 90. The pressure tank with built-in elastic filter 100 has a plurality of water squeezing springs 30, and the plurality of water squeezing springs 30 are located between the first face b and the second face c. During the stretching and contracting process of the water squeezing spring 30, the filter cotton 20 is compressed or relaxed along the stretching and contracting direction of the water squeezing spring 30, thereby assisting the air bag 90 to squeeze the liquid in the filter cotton 20. The addition of the water squeezing spring 30 makes the squeezing of the filter cotton 20 more uniform, reduces the occurrence of plastic deformation, and improves the filtering effect.

[0053] In one embodiment, the water squeezing spring 30 comprises:

[0054] a spring body 31, one end of which is fixed to the tank 10, and the other end of which abuts against the air bag 90;

[0055] a bellows 32, the spring body 31 is arranged in the bellows 32, and the bellows 32 is fixed at both ends of the spring body 31;

[0056] a plurality of drainage plates 33, each of which is fixed to a pipe joint 321 of the bellows 32, and the drainage plate 33 extends into the filter cotton 20;

[0057] the drainage plate 33 has a first squeezing surface 333, the first squeezing surface 333 is located in the filter cotton 20, and the first squeezing surface 333 is perpendicular to the stretching and contracting direction of the spring body 31.

[0058] Specifically, one end of the spring body 31 is fixed to the tank body 10, and the other end is in abutment with the air bag 90. This design ensures that when the air bag 90 expands or contracts, the spring body 31 can be stretched or contracted accordingly, thereby driving the compression or relaxation of the filter cotton 20. The stretching and contracting movement of the spring body 31 not only responds to the changes of the air bag 90, but also helps to expel the water or air in the filter cotton 20 by exerting pressure on the filter cotton 20 through the drainage plate 33. The bellows 32 is wrapped around the periphery of the spring body 31, and its two ends are fixed to the two ends of the spring body 31 respectively. The design of the bellows 32 enables it to expand or contract flexibly with the stretching and contracting of the spring body 31. The drainage plate 33 is fixed to the multiple tube segments 321 of the bellows 32 and extends into the filter cotton 20. This design ensures that the drainage plate 33 can closely adhere to the filter cotton 20, thereby effectively draining water. The drainage plate 33 has first pressing surfaces 333, which are located inside the filter cotton 20 and are perpendicular to the stretching direction of the spring body 31. When the spring body 31 stretches or contracts, the first pressing surfaces 333 of the drainage plate 33 will compress or relax the filter cotton 20 accordingly, thereby expelling the water or air therein. The design of the drainage plate 33 not only improves the drainage efficiency, but also ensures the tight packing and uniform stress of the filter cotton 20.

[0059] Further, the two ends of the bellows 32 are firmly fixed to the two ends of the spring body 31. This design ensures that when the spring body 31 deforms (such as contraction), the bellows 32 can undergo synchronous deformation (such as contraction) accordingly. The drainage plate 33 is ingeniously installed at the multiple tube segments 321 of the bellows 32 and extends into the filter cotton 20. This means that any deformation of the bellows 32 will directly affect the position and state of the drainage plate 33. When the bellows 32 contracts, the spacing between its tube segments 321 will correspondingly decrease. Since the drainage plate 33 is fixed to the tube segments 321, these drainage plates 33 will also move closer to each other as the spacing between the tube segments 321 decreases. As the drainage plates 33 move closer to each other, their pressing effect on the filter cotton 20 will become more pronounced. This enhanced pressing not only helps to expel more water or air from the filter cotton 20, but also ensures that the filter cotton 20 remains tightly packed, thereby improving the filtering efficiency. During the contraction of the bellows 32, the drainage plate 33 not only presses the filter cotton 20, but also generates a pushing force in the direction of the water outlet 40. This pushing force helps to accelerate the process of expelling water or air from the filter cotton 20. Since multiple drainage plates 33 work simultaneously, their pushing effect on the filter cotton 20 will be more pronounced. This synergistic effect not only improves the drainage efficiency, but also ensures that the filter cotton 20 maintains the best filtering state throughout the filtering process.

[0060] In a specific example, the drainage plate 33 includes a first plate body 331 and two second plate bodies 332, the first plate body 331 has two first pressing surfaces 333 on both ends of the first plate body 331 in the extension direction of the spring body 31;

[0061] The two second plate bodies 332 are symmetrically arranged on the side of the first plate body 331 away from the first face b and are respectively located on the two first pressing surfaces 333, the second plate body 332 has a second pressing surface 334, and the included angle a between the second pressing surface 334 on one second plate body 332 and the second pressing surface 334 on the other second plate body 332 arranged on the same first plate body 331 opens away from the bellows 32.

[0062] Specifically, the first plate body 331 of the drainage plate 33 has two first pressing surfaces 333, which are located at both ends in the extension direction of the spring body 31. This means that when the spring body 31 extends or retracts, it will directly act on these two pressing surfaces. The main function of the pressing surface is to press the liquid (such as water) located between them. When the spring body 31 retracts, it will push the two pressing surfaces on the first plate body 331 to move closer to each other, thereby forming a pressing area. This pressing area will exert pressure on the liquid located therein, forcing it to flow out. When the water-pressing spring 30 retracts, it will exert pressure on the liquid through the two pressing surfaces on the first plate body 331. The size of this pressure depends on the degree of retraction of the spring body 31 and the elastic modulus of the material.

[0063] Further, the main function of the second pressing surface 334 is to press the liquid in the filter cotton 20 towards the space between two adjacent first plate bodies 331. When the spring body 31 is contracted, it not only pushes the first pressing surfaces 333 towards each other, but also exerts pressure on the filter cotton 20 through the second pressing surface 334. This pressure forces the liquid in the filter cotton 20 to flow towards the space between two adjacent first plate bodies 331, thus achieving effective drainage. The included angle a is formed between the second pressing surfaces 334 on the two second plate bodies 332, which are located on the two sides of the first plate body 331 and connected to the first plate body 331. The opening direction of the included angle a is away from the bellows 32, i.e. the space between the two second pressing surfaces 334 is open towards the direction away from the bellows 32. In the tank 10, a plurality of drainage plates 33 are arranged at a certain interval, each of which has a first plate body 331 and two second plate bodies 332. When the second plate bodies 332 on two adjacent drainage plates 33 move towards each other, an arched region is formed between them. This arched region is formed by the outer edge portions of the two second plate bodies 332 and the space between them. Since the included angle a is away from the first face b (i.e. the inner side of the tank 10), the arched region has a certain depth in the vertical direction, which provides space for the accumulation and discharge of liquid. When the spring body 31 is contracted under the action of external force, it will move the drainage plates 33 as a whole towards the inside of the tank 10. Since the second plate bodies 332 are connected to the first plate body 331, they will also move with the contraction of the spring. With the contraction of the spring, the arched region between adjacent drainage plates 33 changes. Specifically, the arched region will shrink because the two second plate bodies 332 will move towards each other. Since the included angle a is away from the first face b, the arched region has a certain depth in the vertical direction. When the spring is contracted, this depth will decrease, thus pressing the liquid accumulated in the arched region towards the second face c (i.e. the outer side) of the tank 10. Since the water outlet 40 is located on the second face c, these liquids will eventually be discharged from the tank 10.

[0064] In a specific example, the squeeze spring 30 further comprises a gasket 34 arranged at the end of the spring body 31 away from the tank 10, which is in contact with the air bag 90.

[0065] Specifically, the squeeze spring 30 is a complex assembly, including the spring body 31, the drain plate 33 (possibly containing the first plate body 331 and the second plate body 332), and other possible auxiliary components. The gasket 34 is located at the end of the spring body 31 away from the tank body 10. This means that this end of the spring body 31 does not directly contact the tank body 10, but is connected to another component (in this case, the air bag 90) through the gasket 34. The material selection of the gasket 34 is usually based on its fit with the air bag 90, wear resistance, corrosion resistance, and possible elasticity requirements. Common materials include rubber, silicone, or other high-molecular materials. The main function of the gasket 34 is to ensure the close fit between the spring body 31 and the air bag 90. This fit helps to prevent liquid or gas from leaking between them, thereby maintaining the integrity of the system. When the spring body 31 expands and contracts, the gasket 34 can also act as a buffer, reducing friction and wear between the spring and the air bag 90, and prolonging the service life.

[0066] In a specific example, the tank body 10 is provided with a support leg 11, which is located on the second face c.

[0067] Specifically, the tank body 10 is the main structure that contains components such as the filter cotton 20, the spring, the drain plate 33, etc., and usually has certain strength and sealing properties. The support leg 11 is located on the second face c of the tank body 10. Here, the "second face c" usually refers to the outer side or bottom of the tank body 10, opposite the inner side (i.e., the first face b) of the tank body 10. The specific location of the support leg 11 may vary depending on the design, but it is usually located at the bottom of the tank body 10 in order to support the weight of the entire tank body 10. The material selection of the support leg 11 is usually based on its load-bearing capacity, wear resistance, corrosion resistance, and possible adjustment requirements. Common materials include metals (such as stainless steel, cast iron, etc.), plastics, or rubbers, etc. The main function of the support leg 11 is to support the weight of the tank body 10, ensuring that the tank body 10 can be stably placed on the ground or other support surface. This helps to prevent the tank body 10 from tipping over or moving due to excessive weight or external factors (such as wind, earthquakes, etc.).

[0068] In a specific example, the pressure tank 100 with built-in elastic filter material further includes a one-way valve 80, which is provided between the water outlet 40 and the tank body 10.

[0069] Specifically, the pressure tank 100 with built-in elastic filter is a complex assembly, usually including a tank body 10, elastic filter (such as filter cotton 20), drain plate 33, spring, support foot 11, etc. In addition, in order to optimize performance and function, other auxiliary components may also be included. The one-way valve 80 is provided between the water outlet 40 and the tank body 10. This means that the water outlet 40 is not directly connected to the inside of the tank body 10, but is connected through the one-way valve 80. The one-way valve 80 is usually installed at or near the inlet of the water outlet 40 to ensure that the liquid can only flow in one direction. The material selection of the one-way valve 80 is usually based on its corrosion resistance, wear resistance, sealing performance, and possible elastic requirements. Common materials include rubber, plastic, metal (such as stainless steel), or composite materials, etc. The main function of the one-way valve 80 is to control the flow direction of the liquid, ensuring that the liquid can only flow from the inside of the tank body 10 to the water outlet 40, and cannot flow in the opposite direction. This helps to prevent sewage or impurities from flowing back into the tank body 10, maintaining the cleanliness and filtering efficiency of the tank body 10.

[0070] In a specific example, the pressure tank 100 with built-in elastic filter further includes an air vent 60 provided on the tank body 10, the air vent 60 being in communication with the air bag 90 and the air vent 60 being located on the first face b.

[0071] Specifically, the air vent 60 is provided on the tank body 10 and located on the first face b. Here, the "first face b" usually refers to the inner side of the tank body 10 or the side facing the filter cotton 20. The specific location of the air vent 60 may vary depending on the design, but it is usually located at the top or side of the tank body 10 so that the gas can enter smoothly and connect with the air bag 90. The air vent 60 is in communication with the air bag 90 through a pipe or other connecting piece. This means that when the gas enters the tank body 10 through the air vent 60, it can directly flow to the air bag 90 and inflate or adjust the pressure of the air bag 90. The main function of the air vent 60 is to allow gas to enter the tank body 10 and inflate the air bag 90. This helps to maintain the inflated state of the air bag 90, ensuring that it can closely adhere to the filter cotton 20, improving the filtering efficiency.

[0072] In a specific example, the pressure tank 100 with built-in elastic filter further includes a gas pump 70 provided between the air vent 60 and the air bag 90.

[0073] Specifically, the air pump 70 is located between the air vent 60 and the air bag 90. This means that the air pump 70 is a key device connected between the air vent 60 (which can be an interface outside the pressure tank, used to connect with an external gas source) and the air bag 90. It is responsible for sucking external gas through the air vent 60 and sending it into the air bag 90 after compression. The air pump 70 is usually connected to the air vent 60 and the air bag 90 through pipes or hoses. These connections ensure smooth flow of gas and allow flexible configuration and adjustment of the air pump 70. The main function of the air pump 70 is to provide compressed gas to the air bag 90, making it expand and tightly adhere to the filter cotton 20. This helps to ensure the efficiency and stability of the filtration process.

[0074] In a specific example, the pressure tank 100 with built-in elastic filter also includes a plurality of water inlets 50 communicating with the water outlets 40, and the plurality of water inlets 50 are arranged on the tank body 10 and the plurality of water outlets 40 are arranged around the air vent 60.

[0075] Specifically, a plurality of water inlets 50 are arranged on the tank body 10, which communicate with the water outlets 40 and jointly constitute the water flow channel of the pressure tank. The number of water inlets 50 can be determined according to the size of the tank body 10, the filtration demand and the water flow requirement. The plurality of water outlets 40 are arranged around the air vent 60. This means that the water outlets 40 are not randomly distributed on the tank body 10, but are arranged according to certain layout rules, usually in a ring or radial distribution centered on the air vent 60. This layout helps to ensure the uniformity of water flow and filtration efficiency. When the water inlets 50 are arranged in a ring, water flow can enter the tank body 10 from multiple directions at the same time and be evenly distributed around the air bag 90. Since the water flow can evenly flow around the air bag 90, each filtration unit on the elastic filter can receive the same water flow and pressure. This helps to maintain consistency between the filtration units and reduce differences in filtration efficiency caused by uneven water flow.

[0076] The above is only an embodiment of the present application, and it should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present application, and these improvements are within the scope of protection of the present application.

Claims

1. A pressure tank with built-in elastic filter material, characterized in that, The utility model provides a kind of pressure tank with built-in elastic filter material, including: Tank body, the tank body has first face and second face away from the first face; Air bag, be in the tank body; Filter cotton, fill between the tank body and the air bag; Water squeezing spring, be in the filter cotton, one end of the water squeezing spring is abutted on the tank body, the other end of the water squeezing spring is abutted with the air bag; When the water squeezing spring is telescopic, the water squeezing spring drives the filter cotton and compresses or relaxes along the telescopic direction of the water squeezing spring; The water squeezing spring includes: Spring body, one end is fixed on the tank body, the other end is abutted with the air bag; Bellows, the spring body is arranged in the bellows, and the bellows is fixed on both ends of the spring body; Drainage plate, a plurality of drainage plates are fixed on a plurality of pipe joints of the bellows respectively, and the drainage plate extends into the filter cotton; The drainage plate has a first pressing surface, and the first pressing surface is located in the filter cotton and perpendicular to the telescopic direction of the spring body; The drainage plate includes a first plate body and two second plate bodies, the first plate body has two first pressing surfaces, and the two first pressing surfaces are located at both ends of the first plate body in the telescopic direction of the spring body; The two second plate bodies are symmetrically arranged on the side of the first plate body away from the first face and located on the two first pressing surfaces respectively, the second plate body has a second pressing surface, and the second pressing surface on one second plate body is away from the opening of the included angle a between the second pressing surface on the other second plate body arranged on the same first plate body.

2. The pressure tank with built-in elastic filter material according to claim 1, characterized in that, The pressure tank with built-in elastic filter material also includes a water outlet communicating with the tank body, the water outlet is located on the second face, the air bag penetrates through the first face and communicates with the outside, and the pressure tank with built-in elastic filter material has a plurality of water squeezing springs, and the plurality of water squeezing springs are located between the first face and the second face.

3. The pressure tank with built-in elastic filter material according to claim 2, characterized in that, The water squeezing spring also includes a fitting pad arranged at one end of the spring body away from the tank body, and the fitting pad is fitted with the air bag.

4. The pressure tank with built-in elastic filter material according to claim 2, characterized in that, The tank body is provided with a supporting leg, and the supporting leg is located on the second face.

5. The pressure tank with built-in elastic filter material according to claim 2, characterized in that, The pressure tank with built-in elastic filter material also includes a one-way valve arranged between the water outlet and the tank body.

6. The pressure tank with built-in elastic filter material according to claim 2, characterized in that, The pressure tank with built-in elastic filter material also includes an air inlet arranged on the tank body, the air inlet communicates with the air bag, and the air inlet is located on the first face.

7. The pressure tank with built-in elastic filter material according to claim 6, characterized in that The pressure tank with built-in elastic filter material also includes a gas pump arranged between the air inlet and the air bag.

8. The pressure tank with built-in elastic filter material according to claim 6, characterized in that, The pressure tank with built-in elastic filter material also includes a plurality of water inlets communicating with the water outlet, and the plurality of water inlets are arranged on the tank body and around the air inlet.

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