Pressure relief structure of sprinkling can

Abstract

The utility model relates to the field of sprinkling cans, in particular to a pressure relief structure of a sprinkling can. A sprinkling can pressure relief structure comprises a sprinkling can body, an opening is formed in one side of the sprinkling can body, a sealing cover is connected to the opening, a pressure relief part is arranged at the top of the sealing cover, a pressure relief opening is formed in the pressure relief part, a pressure relief assembly is arranged in the sealing cover in a penetrating mode and comprises a pressure relief cap, a pressure relief hole is formed in the pressure relief part, and the bottom of the pressure relief cap is fixed in the pressure relief hole. A spring is arranged on the pressure relief assembly, a sealing ring is arranged between the spring and the bottom of the pressure relief cap and located in the pressure relief hole, and a sprayer is arranged on the top of the sprinkling can body. Under the condition that the air pressure in the watering can body is not large, the sealing ring can play a sealing role, when the air pressure in the watering can body is too high, the sealing ring is ejected out through the air pressure in the watering can body to relieve pressure so as to achieve automatic pressure relief, and therefore explosion caused by the too high air pressure in the watering can body can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of spray pots, in particular to a pressure relief structure of a spray pot. Background Art

[0002] At present, there are no pressure relief functions on the market. When the nozzle is inflated with air, the air pressure in the spray bottle is too high, which can easily cause the spray bottle to explode. Later, the spray bottles that came in this market were equipped with a pressure relief structure on the nozzle, which adjusted the air pressure in the spray bottle through active pressure relief. However, there is still a risk of explosion due to over-inflation of the nozzle and excessive air pressure in the spray bottle. Utility Model Content

[0003] The utility model aims to provide a pressure relief structure for a spray pot which can automatically relieve pressure.

[0004] The purpose of the utility model is achieved as follows: a spray pot pressure relief structure, including a spray pot body, an opening is provided on one side of the spray pot body, a sealing cover is connected to the opening, a pressure relief part is provided on the top of the sealing cover, a pressure relief port is provided on the pressure relief part, a pressure relief assembly is passed through the sealing cover, the pressure relief assembly includes a pressure relief cap, a pressure relief hole is provided in the pressure relief part, the bottom of the pressure relief cap is fixed in the pressure relief hole, a spring is provided on the pressure relief assembly, a sealing ring is provided between the spring and the bottom of the pressure relief cap, the sealing ring is located in the pressure relief hole, and a spray head is provided on the top of the spray pot body.

[0005] Preferably, the pressure relief assembly includes a connecting rod, a limit block is provided on the connecting rod, the spring and the sealing ring are sleeved on the connecting rod, one end of the spring abuts against the limit block, limit parts are provided on both sides of the connecting rod, a through hole and a limit groove are opened in the middle of the pressure relief cap, the upper end of the connecting rod passes through the through hole and enters the limit groove so that the limit part abuts against the limit groove.

[0006] Preferably, a connecting portion is provided at the upper end of the connecting rod, the connecting portion is in a truncated cone shape, and an exhaust groove is provided at the upper end of the connecting rod.

[0007] Preferably, a measuring cup is provided at the opening, a through-hole is provided at the center of the measuring cup, an outer edge is provided at the top of the measuring cup, the lower part of the outer edge abuts against the opening, and the connecting rod passes through the through-hole and is in the measuring cup.

[0008] Preferably, an O-ring is provided at the outer edge, the O-ring abuts against the outer edge, a circular protrusion is provided inside the sealing cover, the inner hole diameter of the circular protrusion is consistent with the diameter of the pressure relief port, the outer hole diameter of the circular protrusion is larger than the diameter of the pressure relief port, and the circular protrusion is adapted to the penetration port.

[0009] Preferably, a detachable spray pot base is provided at the bottom of the spray pot body.

[0010] Preferably, the sealing cover is provided with a plurality of reinforcing ribs.

[0011] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0012] 1. Inflate the main body of the spray pot through the nozzle. When the air pressure reaches a certain level, the air pressure will be concentrated on the position of the pressure relief component. Excessive air pressure will cause the sealing ring to push upward. When pushing upward, there is a gap between the sealing ring and the pressure relief hole. The air pressure then enters the pressure relief hole of the sealing cover through the hole of the measuring cup, and is discharged to the pressure relief port of the sealing cover through the gap between the sealing ring and the pressure relief hole, and finally enters the air. When the air pressure inside the main body of the spray pot is not high, the sealing ring can play a sealing role. When the air pressure inside the main body of the spray pot is too high, the air pressure inside the main body of the spray pot is used to push out the sealing ring to release the pressure to achieve automatic pressure relief, which can avoid the explosion caused by excessive air pressure inside the main body of the spray pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is one of the structural schematic diagrams of the utility model;

[0014] Figure 2 This is the second structural diagram of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the measuring cup, sealing cover and pressure relief assembly of the utility model;

[0016] Figure 4 It is an exploded view of the measuring cup, the sealing cover and the pressure relief assembly of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the pressure relief assembly of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the pressure relief cap of the utility model;

[0019] Figure 7 It is a structural schematic diagram of the sealing cover of the utility model.

[0020] In the figure: 1-spray pot body, 2-opening, 3-sealing cover, 4-pressure relief part, 5-pressure relief port, 6-pressure relief assembly, 7-pressure relief cap, 8-pressure relief hole, 9-spring, 10-sealing ring, 11-spray head, 12-connecting rod, 13-limiting block, 14-through hole, 15-limiting groove, 16-connecting part, 17-exhaust groove, 18-measuring cup, 19-through port, 20-outer edge, 21-spray pot base, 22-limiting part, 23-O-ring, 24-circular protrusion, 25 reinforcing rib. DETAILED DESCRIPTION

[0021] The present invention is further described below with reference to specific embodiments.

[0022] like Figures 1 to 7As shown, a pressure relief structure of a spray pot comprises a spray pot body 1, an opening 2 is provided on one side of the spray pot body 1, a sealing cover 3 is connected to the opening 2, a pressure relief portion 4 is provided on the top of the sealing cover 3, a pressure relief port 5 is provided on the pressure relief portion 4, a pressure relief assembly 6 is passed through the sealing cover 3, the pressure relief assembly 6 comprises a pressure relief cap 7, a pressure relief hole 8 is provided in the pressure relief portion 4, the bottom of the pressure relief cap 7 is fixed in the pressure relief hole 8, a spring 9 is provided on the pressure relief assembly 6, a sealing ring 10 is provided between the spring 9 and the bottom of the pressure relief cap 7, the sealing ring 10 is located in the pressure relief hole 8, and a spray head 11 is provided on the top of the spray pot body 1.

[0023] The pressure relief assembly 6 includes a connecting rod 12, on which a limit block 13 is provided, the spring 9 and the sealing ring 10 are sleeved on the connecting rod 12, one end of the spring 9 abuts against the limit block 13, and limit portions 22 are provided on both sides of the connecting rod 12. A through hole 14 and a limit groove 15 are opened in the middle of the pressure relief cap 7, and the upper end of the connecting rod 12 passes through the through hole 14 and enters the limit groove 15 so that the limit portion 22 abuts against the limit groove 15.

[0024] The upper end of the connecting rod 12 is provided with a connecting portion 16, and the connecting portion 16 is in a truncated cone shape. The upper end of the connecting rod 12 is provided with an exhaust groove 17. When the limiting portion 22 of the connecting rod 12 is fixedly connected with the limiting groove 15 of the pressure relief cap 7 and wants to be disassembled, the exhaust groove 17 can facilitate the separation between the limiting portion 22 and the limiting groove 15 to avoid being difficult to pull out due to the air pressure inside. The connecting portion 16 is set to be in a truncated cone shape. The upper diameter of the connecting portion 16 is small, and the lower diameter of the connecting portion 16 is large, which is convenient for installation with the pressure relief cap.

[0025] A measuring cup 18 is provided at the opening 2, a through hole 19 is provided at the center of the measuring cup 18, an outer edge 20 is provided at the top of the measuring cup 18, and the lower part of the outer edge 20 abuts against the opening 2. The connecting rod 12 passes through the through hole 19 in the measuring cup 18. The nutrient solution can be poured into the measuring cup 18 to adjust the measurement, and then the nutrient solution in the measuring cup 18 is poured into the spray pot body 1. The measuring cup 18 is made of transparent material and is marked with scales.

[0026] An O-ring 23 is provided at the outer edge 20, and the O-ring 23 abuts against the outer edge 20. A circular protrusion 24 is provided inside the sealing cover 3. The inner hole diameter of the circular protrusion 24 is consistent with the diameter of the pressure relief port 5, and the outer hole diameter of the circular protrusion 24 is larger than the diameter of the pressure relief port 5. The circular protrusion 24 is adapted to the penetration port 19. The connection between the measuring cup 18 and the sealing cover 3 is fixed by the adaptation of the circular protrusion 24 and the penetration port 19, thereby further enhancing the sealing effect.

[0027] A detachable spray pot base 21 is provided at the bottom of the spray pot body 1. During normal use, the spray pot body 1 is easily placed on a table or the ground, which causes wear to the bottom of the spray pot body 1. This problem can be avoided by replacing the detachable spray pot base 21.

[0028] The sealing cover 3 is provided with a plurality of reinforcing ribs 25 , which increase the friction force when the sealing cover 3 is threadedly connected to the opening 2 .

[0029] Automatic pressure relief principle:

[0030] First, the spring 9 is sleeved on the connecting rod 12, one end of the spring 9 abuts on the limit block 13, and then the connecting rod 12 is passed through the penetration hole 19 of the measuring cup 18, so that the connecting rod 12 enters the measuring cup 18, and the other end of the spring 9 abuts on the top of the inner wall of the measuring cup 18. The upper end of the connecting rod 12 passes through the pressure relief port 5 of the sealing cover 3, so that the connecting rod 12 is in the sealing cover 3, and the sealing ring 10 is installed on the pressure relief hole 8 of the pressure relief part 4, and the circular protrusion 24 on the sealing cover 3 is adapted and connected with the penetration hole 19 of the measuring cup 18, so that the sealing cover 3 and the measuring cup 18 are fixed, and the connecting part 16 of the connecting rod 12 passes through the penetration hole 14 of the pressure relief cap 7, so that the pressure relief cap 7 is fixedly connected with the limiting part 22 of the connecting rod 12, and the limiting part 22 of the connecting rod 12 abuts on the limiting groove 15 of the pressure relief cap 7, and finally passes through the sealing cover 3 and the opening 2 The threaded connection between the two is sealed. After the installation is completed, air is pumped into the spray pot body 1 through the nozzle 11. When the air pressure reaches a certain level, the air pressure will be concentrated on the position of the pressure relief component 6. Excessive air pressure will cause the sealing ring 10 to push upward. When pushing upward, a gap is left between the sealing ring 10 and the pressure relief hole 8. The air pressure then passes through the penetration port 19 of the measuring cup 18 and enters the pressure relief hole 8 of the sealing cover 3, and is discharged to the pressure relief port 5 of the sealing cover 3 through the gap between the sealing ring 10 and the pressure relief hole 8, and finally enters the air. When the air pressure inside the spray pot body 1 is not large, the sealing ring 10 can play a sealing role. When the air pressure inside the spray pot body 1 is too high, the air pressure inside the spray pot body 1 is used to push out the sealing ring 10 to relieve the pressure to achieve automatic pressure relief, which can avoid the explosion caused by excessive air pressure inside the spray pot body 1.

[0031] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A watering pot pressure relief structure, comprising a watering pot body (1), characterized in that: The spray pot body (1) is provided with an opening (2) on one side, the opening (2) is connected to a sealing cover (3), a pressure relief portion (4) is provided on the top of the sealing cover (3), the pressure relief portion (4) is provided with a pressure relief port (5), a pressure relief assembly (6) is inserted into the sealing cover (3), the pressure relief assembly (6) comprises a pressure relief cap (7), a pressure relief hole (8) is provided in the pressure relief portion (4), the bottom of the pressure relief cap (7) is fixed in the pressure relief hole (8), a spring (9) is provided on the pressure relief assembly (6), a sealing ring (10) is provided between the spring (9) and the bottom of the pressure relief cap (7), the sealing ring (10) is located in the pressure relief hole (8), and a spray head (11) is provided on the top of the spray pot body (1).

2. A spray pot pressure relief structure according to claim 1, characterized in that: The pressure relief assembly (6) comprises a connecting rod (12), a limiting block (13) is provided on the connecting rod (12), the spring (9) and the sealing ring (10) are sleeved on the connecting rod (12), one end of the spring (9) abuts against the limiting block (13), limiting portions (22) are provided on both sides of the connecting rod (12), a through hole (14) and a limiting groove (15) are provided in the middle of the pressure relief cap (7), the upper end of the connecting rod (12) passes through the through hole (14) and enters the limiting groove (15) so that the limiting portion (22) abuts against the limiting groove (15).

3. A spray pot pressure relief structure according to claim 2, characterized in that: The upper end of the connecting rod (12) is provided with a connecting portion (16), the connecting portion (16) is in a truncated cone shape, and the upper end of the connecting rod (12) is provided with an exhaust groove (17).

4. A spray pot pressure relief structure according to claim 2, characterized in that: A measuring cup (18) is provided at the opening (2), a through opening (19) is provided at the center of the measuring cup (18), an outer edge (20) is provided at the top of the measuring cup (18), the lower part of the outer edge (20) abuts against the opening (2), and the connecting rod (12) passes through the through opening (19) and is inside the measuring cup (18).

5. A spray pot pressure relief structure according to claim 4, characterized in that: An O-ring (23) is provided at the outer edge (20), and the O-ring (23) abuts against the outer edge (20). A circular protrusion (24) is provided inside the sealing cover (3), and the inner hole diameter of the circular protrusion (24) is consistent with the diameter of the pressure relief port (5), and the outer hole diameter of the circular protrusion (24) is larger than the diameter of the pressure relief port (5). The circular protrusion (24) is adapted to the penetration port (19).

6. A spray pot pressure relief structure according to claim 4, characterized in that: A detachable watering pot base (21) is provided at the bottom of the watering pot body (1).

7. A spray pot pressure relief structure according to claim 2, characterized in that: The sealing cover (3) is provided with a plurality of reinforcing ribs (25).

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