CN110886345B

CN110886345B - Pressure tank

Info

Publication number: CN110886345B
Application number: CN201911266980.9A
Authority: CN
Inventors: 陈仁德
Original assignee: Wenling Huanli Electric Appliance Co ltd
Current assignee: Wenling Huanli Electric Appliance Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2024-11-15
Anticipated expiration: 2039-12-11
Also published as: CN110886345A

Abstract

The present invention provides a pressure tank, belonging to the technical field of pressure tanks. It solves the problem that the airbag of the existing pressure tank is easily damaged. The pressure tank comprises an outer shell and an airbag arranged in the outer shell, the airbag divides the cavity inside the outer shell into an air cavity and a water cavity which are not connected to each other, an air nozzle and a water inlet joint are arranged in the outer shell, the air nozzle is connected to the air cavity, the water inlet joint is connected to the water cavity, the outer side wall of the airbag is provided with a first abutment portion which is protruded, the first abutment portion is arranged corresponding to the air nozzle, and the inner side wall of the airbag is provided with a second abutment portion which is protruded, the second abutment portion is arranged corresponding to the water inlet joint. The pressure tank has the advantages that the airbag is not easily damaged and has a long service life.

Description

Pressure tank

Technical Field

The invention belongs to the technical field of pressure tanks, relates to a pressure tank, and particularly relates to a water pump pressure tank.

Background

The pressure tank is used in a closed water circulation system, plays a role in balancing water quantity and pressure, and avoids frequent opening of the safety valve and frequent water supplement of the automatic water supplementing valve. The water pump is the equipment commonly used for pumping water, and the water pressure inevitably fluctuates when the water pump pumps water, so that the pressure tank is often arranged on the water pump for balancing the water pressure, preventing the cylinder body of the water pump from vibrating, and prolonging the service life of the water pump.

The prior pressure tank, such as China patent literature data, discloses a pressure tank [ application number: 201420680367.8; authorized bulletin number: CN204253345U, which comprises a tank body and a leather bag, wherein the open end of the tank body is provided with a flange cover for fixing the leather bag, and the other end is provided with an air tap hole for installing an air tap; the Faraday cover comprises a cover body and flanges extending around the cover body, and the cover body is provided with an interface towards the outer side; the opening of the leather bag extends out of the leather bag edge matched with the flange, the flange of the flange cover is matched with the leather bag edge, and the leather bag is sleeved in the tank body; the novel gas-water tank is characterized by further comprising a gasket which is arranged on the inner wall of the tank body and positioned at the position of the gas nozzle hole, and the gasket is provided with a mounting hole matched with the gas nozzle.

The pressure tank with the structure protects the leather bag through the gasket, so that the leather bag is not easy to damage. However, when the tank body is filled with gas and the gas pressure is high, the leather bag is pressed into the joint by the gas pressure, and friction can occur between the leather bag and the joint, so that the leather bag is damaged; meanwhile, when the leather bag is filled with water and the water pressure is high, the leather bag is pressed into the air tap by the water pressure, and the leather bag and the air tap are rubbed, so that the leather bag is damaged; the damage to the bellows can lead to a reduced service life of the pressure tank.

Disclosure of Invention

The invention aims at solving the problems in the prior art, and provides a pressure tank, which solves the technical problems of difficult damage of an air bag and prolonging of the service life of the pressure tank.

The aim of the invention can be achieved by the following technical scheme: the utility model provides a pressure tank, includes the shell and sets up the gasbag in the shell, the gasbag separates into the air cavity and the water cavity that each other do not communicate with the cavity of shell inside, be equipped with air cock and water inlet connector in the shell, the air cock is linked together with the air cavity, water inlet connector is linked together with the water cavity, its characterized in that, have the first portion of leaning on that the protrusion set up on the lateral wall of gasbag, first portion of leaning on corresponds the setting with the air cock, have the second portion of leaning on that the protrusion set up on the inside wall of gasbag, the second is leaning on the portion and is corresponded the setting with water inlet connector.

The air bag has elasticity and can stretch out and draw back, but also has certain hardness, the first abutting part and the second abutting part have certain hardness, the air cavity is inflated through the air tap, the second abutting part abuts against the shell and seals the water inlet joint after the air cavity is filled with air, the air bag is prevented from being damaged due to the fact that the air bag is pressed into the water inlet joint by the air, and the air bag is not damaged easily; the water cavity is filled with water through the water inlet connector, and the first abutting part abuts against and seals the air tap after the water cavity is filled with water, so that the air bag is prevented from being damaged by the water pressure air inlet tap, and the air bag is not easy to damage. Through setting up first portion of leaning on and second portion of leaning on, make the gasbag can not enter into air cock and water inlet connector in, the gasbag is not fragile to improve the life of overhead tank.

In the pressure tank, the first abutting portion and the second abutting portion are coaxially arranged, the connection point of the first abutting portion and the air bag is identical to the connection point of the second abutting portion and the air bag, and the first abutting portion, the second abutting portion and the air bag are of an integrated structure. This kind of structure can improve the intensity of first portion of leaning on and second portion of leaning on, makes simultaneously that first portion of leaning on and second are leaning on pressure when being pressed more even, and first portion of leaning on and second portion of leaning on can not deviate from the position, makes the gasbag can not enter into air cock and water inlet connector in, and the gasbag is not fragile to improve the life of overhead tank.

In one of the pressure tanks described above, the air bag portion is recessed inward to form a receiving chamber, and the first abutting portion is located in the receiving chamber. The gasbag itself has certain hardness, has the memory, can restore the original state, rational utilization space, only when the water pressure in the water cavity is big enough, the first portion of leaning on just can bulge to lean on and shutoff air cock, and during normal state, the first portion of leaning on can not the mistake shutoff air cock, guarantees that the overhead tank is in normal operating condition.

In the pressure tank, the shell comprises a tank body and a tank cover which are made of plastic materials, an annular fixed sealing part is arranged at the edge of the opening of the air bag, the fixed sealing part is embedded between the tank body and the tank cover, and the air bag is fixedly arranged in the shell by penetrating through the tank body and the tank cover through a fastener and locking. The tank body and the tank cover are made of plastic materials, the tank body and the tank cover are fixed through the cooperation of fasteners such as bolts and nuts, the pressure tank is convenient to assemble, the joint of the tank body and the tank cover does not need to be welded, and the service life of the pressure tank is not affected by the damage to the air bag caused by welding.

In the pressure tank, the tank cover is provided with a plurality of through holes, the inner diameter of each through hole is smaller than that of the water inlet joint, all the through holes are located in the area surrounded by the water inlet joint, the second abutting part is cylindrical or frustum-shaped, and the second abutting part can seal all the through holes. The arrangement of the through holes is equivalent to making the inner end of the water inlet joint into a net shape, and the part between two adjacent through holes can support the second abutting part, so that the second abutting part can better abut against the tank cover, the second abutting part is not easy to deform, the air bag is prevented from being damaged by being pressed into the water inlet joint, the air bag is not easy to damage, and the service life of the pressure tank is prolonged.

In the pressure tank, the inner side wall of the tank cover is further provided with a plurality of reinforcing ribs radiating from the middle to the periphery, the inner ends of the reinforcing ribs are positioned at the edge of the circular arrangement area of the through holes, and the second abutting parts can be positioned between the inner ends of the reinforcing ribs. The first strengthening rib plays the effect of reinforcing cover intensity, and the second strengthening rib is to the second portion of leaning on plays the effect of location, prevents that the second from leaning on the portion and deviate from the settlement position when shutoff water inlet joint, prevents that the gasbag from being pressed into water inlet joint and damaging, and the gasbag is not fragile to improve the life of overhead tank.

In the pressure tank, the tank cover is provided with the concave annular fixing groove, the tank body is provided with the convex annular compression ring, the fixing sealing part is embedded in the fixing groove, the fixing sealing part is provided with the annular compression groove, and the compression ring is embedded in the compression groove. The structure improves the firmness of the fixation of the air bag, prevents the air bag from falling off, and improves the tightness.

In the pressure tank, the edge outside the fixed sealing part is provided with a plurality of convex strips which are arranged at intervals and are arranged in a protruding mode, and the convex strips are embedded into the tank body. The setting of sand grip improves the sealing area of fixed sealing portion, can improve the fixed firm degree of gasbag, makes the gasbag can not drop, and this kind of structure of sand grip cooperatees with the jar body simultaneously, can not disturbed, can not blocked when the installation.

In the pressure tank, the sealing strip protruding is arranged at the bottom of the fixed groove, and the sealing strip can be embedded into the fixed sealing part. The arrangement of the sealing strip improves the tightness.

In the pressure tank, the first abutting portion is cylindrical or frustum-shaped, the air tap portion is located in the air cavity, and a surface of the air tap portion facing the first abutting portion is a plane. The stability of the first abutting part during abutting is improved, the air bag is prevented from being damaged by the air pressing nozzle, and therefore the service life of the pressure tank is prolonged.

Compared with the prior art, the pressure tank provided by the invention has the following advantages:

1. This overhead tank is through setting up first portion of leaning on and second portion of leaning on, prevents that the gasbag from being pressed into air cock and water inlet joint, and the gasbag is not fragile to improve overhead tank's life.

2. The first supporting portion and the second supporting portion of the pressure tank are symmetrically arranged on the positive side and the negative side of the air bag, so that the pressure of the first supporting portion and the pressure of the second supporting portion are more uniform, the first supporting portion and the second supporting portion cannot deviate from the set positions, the air bag cannot enter the air nozzle and the water inlet connector, and the air bag is not easy to damage, so that the service life of the pressure tank is prolonged.

3. The tank body and the tank cover of the pressure tank are made of plastic materials, welding is not needed at the joint of the tank body and the tank cover, and the service life of the pressure tank is not affected by the damage to the air bag caused by welding.

Drawings

Fig. 1 is a cross-sectional view of the entire structure of the present pressure tank.

Fig. 2 is a schematic diagram of the whole structure of the present pressure tank airbag.

Fig. 3 is a schematic view of the overall structure of the pressure tank cover.

In the figure, 1, a shell; 11. a tank body; 12. a can lid; 13. a through hole; 14. reinforcing ribs; 15. a fixing groove; 16. a clamp ring; 17. a sealing strip; 2. an air bag; 21. a fixed sealing part; 22. a compaction groove; 23. a convex strip; 3. an air cavity; 4. a water chamber; 5. an air tap; 6. a water inlet joint; 7. a first abutting portion; 8. a second abutting portion; 9. a receiving chamber; 10. a fastener.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the pressure tank comprises a shell 1, an air bag 2, an air tap 5 and a water inlet joint 6, wherein the shell 1 comprises a tank body 11 and a tank cover 12 which are all made of plastic materials.

The outer side wall of the air bag 2 is provided with a first abutting part 7 which is arranged in a protruding mode, the inner side wall of the air bag 2 is provided with a second abutting part 8 which is arranged in a protruding mode, and the first abutting part 7, the second abutting part 8 and the air bag 2 are of an integrated structure. As shown in fig. 2, the airbag 2 is partially recessed inward to form a receiving cavity 9, the first abutting portion 7 is located in the receiving cavity 9, the first abutting portion 7 and the second abutting portion 8 are coaxially arranged, and the connection point of the first abutting portion 7 and the airbag 2 is identical to the connection point of the second abutting portion 8 and the airbag 2, that is, the first abutting portion 7 and the second abutting portion 8 are located on the front side and the back side of the airbag 2 and are symmetrically arranged.

The gasbag 2 is fixed to be set up in shell 1, and gasbag 2 separates into air cavity 3 and water cavity 4 that each other do not communicate with the cavity of shell 1 inside, is equipped with air cock 5 and water inlet connector 6 in the shell 1, and air cock 5 is linked together with air cavity 3, and water inlet connector 6 is linked together with water cavity 4, and first portion of leaning on 7 corresponds the setting with air cock 5, and second portion of leaning on 8 corresponds the setting with water inlet connector 6, and air cock 5 part is located air cavity 3, and the face that this part of air cock 5 is the plane towards first portion of leaning on 7. In this embodiment, the first abutting portion 7 is cylindrical, the second abutting portion 8 is conical, and in actual production, the first abutting portion 7 is conical, and the second abutting portion 8 is cylindrical.

Specifically, the edge of the opening of the airbag 2 is provided with an annular fixed sealing part 21, the fixed sealing part 21 is provided with annular pressing grooves 22, the edge of the outer side of the fixed sealing part 21 is provided with convex strips 23 which are arranged at intervals and are arranged in a protruding mode, the number of the convex strips 23 is sixteen in this embodiment, and in actual production, the number of the convex strips 23 can be ten or twenty. The tank cover 12 is provided with a concavely arranged annular fixing groove 15, the tank bottom of the fixing groove 15 is provided with a convexly arranged sealing strip 17, the tank body 11 is provided with a convexly arranged annular compression ring 16, the fixing sealing part 21 is embedded in the fixing groove 15, the compression ring 16 is embedded in the compression groove 22, the convex strip 23 is embedded in the tank body 11, the sealing strip 17 can be embedded in the fixing sealing part 21 through a fastener 10 such as a combination of a bolt and a nut or a rivet penetrating through the tank body 11 and the tank cover 12 and being locked, so that the fixing sealing part 21 is embedded and fixed between the tank body 11 and the tank cover 12.

As shown in fig. 3, in this embodiment, seven through holes 13 are formed in the can lid 12, eight reinforcing ribs 14 radiating from the middle to the periphery are further formed on the inner side wall of the can lid 12, and in actual production, the number of the through holes 13 may be five or ten, and the number of the reinforcing ribs 14 may be five or twelve. The internal diameter of through-hole 13 is less than the internal diameter of water inlet connector 6, and all through-holes 13 are circular arrangement, and all through-holes 13 all are located the region that water inlet connector 6 encloses, and the inner of strengthening rib 14 is located the border department that through-hole 13 is circular arrangement region, and the second is supported and is leaned on portion 8 can be located between the inner of strengthening rib 14.

The pressure tank is mainly used on a water pump, the pressure tank is connected to an electronic pressure controller, the air cavity 3 of the pressure tank is inflated through the air tap 5, the air cavity 3 is filled with air, the air bag 2 can be compressed to the tank cover 12, and the second abutting part 8 is used for blocking all through holes 13. When the water pump is started, the electronic pressure controller is full of water pressure, water flows into the water cavity 4 of the pressure tank through the water inlet joint 6, so that the gas pressure in the air cavity 3 is equal to the pressure of water in the water cavity 4, and when the pressure of the water in the water cavity 4 is higher than the gas pressure in the air cavity 3, the first abutting part 7 abuts against the air tap 5 and seals the air tap 5. When the water pump is stopped, the water pressure in the electronic pressure controller is reduced, the air in the air cavity 3 of the pressure tank extrudes the air bag 2, and the water in the water cavity 4 is supplemented into the electronic pressure controller, so that the required water pressure in the electronic pressure controller can be kept, the water pump is prevented from being started frequently until the water pressure in the electronic pressure controller is lower than the starting pressure of the water pump, the water pump is started, and the next cycle is recycled.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the outer case 1, the can 11, the can lid 12, the through hole 13, the reinforcing ribs 14, the fixing groove 15, the clamp ring 16, the sealing strip 17, the airbag 2, the fixing seal 21, the clamp groove 22, the convex strip 23, the air chamber 3, the water chamber 4, the air tap 5, the water inlet joint 6, the first abutting portion 7, the second abutting portion 8, the accommodating chamber 9, the fastener 10, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.

Claims

1. A pressure tank, comprising a shell (1) and an air bag (2) arranged in the shell (1), the air bag (2) dividing the cavity inside the shell (1) into an air cavity (3) and a water cavity (4) which are not connected to each other, the shell (1) being provided with an air nozzle (5) and a water inlet joint (6), the air nozzle (5) being connected to the air cavity (3), and the water inlet joint (6) being connected to the water cavity (4), characterized in that the outer wall of the air bag (2) is provided with a first abutting portion (7) which is protrudingly arranged, the first abutting portion (7) being arranged correspondingly to the air nozzle (5), the inner wall of the air bag (2) is provided with a second abutting portion (8) which is protrudingly arranged, the second abutting portion (8) being arranged correspondingly to the water inlet joint (6), the shell (1) comprising a tank body (11) and a tank cover (12) both made of plastic material, the edge of the opening of the air bag (2) being provided with an annular fixed sealing portion (21), the fixed sealing portion ( The tank body (11) and the tank cover (12) are embedded between the tank body (11) and the tank cover (12), and the fastener (10) passes through the tank body (11) and the tank cover (12) and is locked so that the airbag (2) is fixedly arranged in the shell (1), the tank cover (12) has a recessed annular fixing groove (15), the tank body (11) has a protruding annular clamping ring (16), the fixed sealing part (21) is embedded in the fixing groove (15), and the fixed sealing part (21) has an annular clamping groove (22), the clamping ring (16) is embedded in the clamping groove (22), the outer edge of the fixed sealing part (21) has a plurality of convex strips (23) arranged at intervals and protruding, the convex strips (23) are embedded in the tank body (11), and the bottom of the fixing groove (15) has a sealing strip (17) protruding, and the sealing strip (17) can be embedded in the fixed sealing part (21).

2. A pressure tank according to claim 1, characterized in that the first abutting portion (7) and the second abutting portion (8) are coaxially arranged, the connection point between the first abutting portion (7) and the airbag (2) is the same as the connection point between the second abutting portion (8) and the airbag (2), and the first abutting portion (7), the second abutting portion (8) and the airbag (2) are an integrated structure.

3. A pressure tank according to claim 1, characterized in that the airbag (2) is partially recessed inward to form an accommodating cavity (9), and the first abutting portion (7) is located in the accommodating cavity (9).

4. A pressure tank according to claim 1, 2 or 3, characterized in that the tank cover (12) has a plurality of through holes (13), the inner diameter of the through holes (13) is smaller than the inner diameter of the water inlet joint (6), all of the through holes (13) are located within the area surrounded by the water inlet joint (6), and the second abutment portion (8) is cylindrical or frustum-shaped, and the second abutment portion (8) can block all of the through holes (13).

5. A pressure tank according to claim 4, characterized in that the inner side wall of the tank cover (12) also has a plurality of reinforcing ribs (14) radiating from the middle to the surrounding areas, the inner ends of the reinforcing ribs (14) are located at the edge of the circular arrangement area of the through holes (13), and the second abutment portion (8) can be located between the inner ends of the reinforcing ribs (14).

6. A pressure tank according to claim 1, 2 or 3, characterized in that the first abutting portion (7) is cylindrical or frustum-shaped, the air nozzle (5) is partially located in the air cavity (3), and the surface of the air nozzle (5) facing the first abutting portion (7) is a plane.