A pressure relief spray pump core

Abstract

The utility model discloses a kind of pressure relief spray pump core, including pump shell, first piston rod, connecting piece, second piston rod, steel ball, spring, first piston rod slides along first interval, second piston rod is located in pump shell, second piston rod slides along second interval, spring is pressed against the lower end of second piston rod, first liquid cavity is formed between first piston rod and second piston rod, one end of connecting piece is connected with second piston rod, second liquid cavity is formed between connecting piece and second piston rod, the side wall of second piston rod is provided with through hole to communicate first liquid cavity and second liquid cavity, second liquid cavity installs steel ball, connecting piece and first piston rod are slidably connected, the upper end of connecting piece can be pressed against the lower end of the liquid outlet passage of first piston rod, the utility model's first piston rod in the process of pressing, feed liquid enters first liquid cavity, the pressure of first liquid cavity gradually increases, connecting piece is opened by the pressure of first liquid cavity, pressure is released through liquid outlet passage instantaneously, and instantaneous spray effect is better.

Description

Technical Field

[0001] This utility model relates to the field of press pump core technology, and more specifically, to a pressure relief spray pump core. Background Technology

[0002] In the existing technology, the pump core of the spray bottle has insufficient pressure at the spray end, which causes some of the liquid to condense into droplets at the nozzle during the spraying process, resulting in poor spraying effect and waste. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pressure relief spray pump core that can provide instantaneous pressure to improve the spraying effect.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a pressure relief spray pump core, including a pump housing, a first piston rod, a connecting member, a second piston rod, a steel ball, and a spring. The pump housing includes a first section and a second section. The first piston rod can slide along the first section. The second piston rod is located inside the pump housing and can slide along the second section. The spring is located inside the second section and abuts against the lower end of the second piston rod. A first liquid cavity is formed between the first piston rod and the second piston rod. One end of the connecting member is fixedly connected to the second piston rod, and a second liquid cavity is formed between the connecting member and the second piston rod. A through hole is provided on the side wall of the second piston rod, and the through hole connects the first liquid cavity and the second liquid cavity. A steel ball is installed in the second liquid cavity. The connecting member is slidably connected to the first piston rod. The first piston rod has a liquid outlet channel, and the upper end of the connecting member can abut against the lower end of the liquid outlet channel.

[0006] Furthermore, including a first state, a second state, and a third state, the second piston rod includes a liquid inlet channel, which connects the second interval and the second liquid chamber. In the first state, the steel ball seals the upper end of the liquid inlet channel, and the upper end of the connector seals the lower end of the liquid outlet channel. In the second state, the liquid inlet channel is connected to the second liquid chamber. In the third state, the upper end of the connector leaves the lower end of the liquid outlet channel, and the first liquid chamber is connected to the liquid outlet channel.

[0007] Furthermore, a portion of the second piston rod is inserted into the connector, and the upper end of the second piston rod is provided with an inwardly recessed conical groove. The outer wall of the steel ball can abut against the side wall of the conical groove, and a gap is provided between the side wall of the steel ball and the side wall of the second liquid chamber.

[0008] Furthermore, the first piston rod is provided with a step, the step being located at the lower end of the liquid outlet channel, and the connector includes a conical surface, which blocks the first liquid chamber and the liquid outlet channel when it abuts against the edge of the step.

[0009] Furthermore, the first piston rod is provided with a slot, the connector is at least partially located in the slot, and a portion of the sidewall of the slot is slidably connected to the sidewall of the connector.

[0010] Furthermore, the upper end of the connector is provided with an end block, and the upper end of the end block is a cone shape with a diameter that gradually decreases upward.

[0011] Furthermore, the side wall of the first piston rod is piston-connected to the inner side wall of the first section, and the side wall of the second piston rod is piston-connected to the inner side wall of the second section.

[0012] Furthermore, the lower end of the pump housing is provided with an opening that connects to the liquid inlet channel, and a shoulder sleeve is installed at the upper opening of the pump housing, through which a portion of the first piston rod passes.

[0013] The beneficial effects of this utility model are:

[0014] During the pressing process, the first piston rod of this invention allows the liquid to gradually enter the first liquid chamber, causing the pressure in the first liquid chamber to gradually increase. When the pressure reaches a certain level, the pressure in the first liquid chamber pushes the connecting piece open downwards, and the pressure in the first liquid chamber is released instantaneously through the liquid outlet channel. After the pressure is released, the connecting piece resets and blocks the liquid outlet channel. The instantaneous spray pressure when the liquid is discharged is greater, and the sprayed water mist effect is better. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the first state in this embodiment.

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 This is a cross-sectional view of the second state in this embodiment.

[0018] Figure 4 This is a cross-sectional view of the third state in this embodiment.

[0019] Reference numerals: 1. Pump housing; 11. First section; 12. Second section; 2. First piston rod; 21. Liquid outlet channel; 22. Step; 23. Slot; 3. Connector; 31. Conical surface; 32. Through hole; 33. End block; 4. Second piston rod; 41. Liquid inlet channel; 5. Steel ball; 6. Spring; 7. Shoulder sleeve; 101. First liquid chamber; 102. Second liquid chamber. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-4 As shown, this embodiment discloses a pressure-relief spray pump core, including a pump housing 1, a first piston rod 2, a connector 3, a second piston rod 4, a steel ball 5, a spring 6, and a shoulder sleeve 7. The pump housing 1 includes a first section 11 and a second section 12. A portion of the first piston rod 2 is located inside the pump housing 1. The side wall of the first piston rod 2 is piston-connected to the inner side wall of the first section 11. A piston is provided on the side wall of the first piston rod 2 located inside the pump housing 1. The first piston rod 2 can slide along the first section 11. The shoulder sleeve 7 is installed at the upper opening of the pump housing 1. A portion of the first piston rod 2 passes through the shoulder sleeve 7. The upper end of the first piston rod 2 is used to connect to the pump head for pressing and is connected to the nozzle.

[0022] The second piston rod 4 is located inside the pump housing 1. The side wall of the second piston rod 4 is connected to the inner side wall of the second section 12. The side wall of the second piston rod 4 is provided with a piston corresponding to the side wall of the second section 12. The second piston rod 4 can slide along the second section 12. The spring 6 is located inside the second section 12. The spring 6 abuts against the lower end of the second piston rod 4. The lower end of the pump housing 1 is provided with an opening. The spring 6 abuts against the inner side of the lower end opening of the pump housing 1 to support and reset the second piston rod 4. The second piston rod 4 includes a liquid inlet channel 41. The opening is connected to the liquid inlet channel 41. The material enters the pump core through the lower end opening of the pump housing 1.

[0023] The piston on the side wall of the first piston rod 2 and the piston on the side wall of the second piston rod 4 divide the internal space of the pump housing 1 to form a first liquid chamber 101. One end of the connector 3 is fixedly connected to the second piston rod 4. A portion of the second piston rod 4 is inserted into the connector 3, and a second liquid chamber 102 is formed between the connector 3 and the second piston rod 4. The liquid inlet channel 41 connects the second section 12 located below the second piston rod 4 and the second liquid chamber 102. The side wall of the second piston rod 4 is provided with a through hole 32, which connects the first liquid chamber 101 and the second liquid chamber 102. A steel ball 5 is installed in the second liquid chamber 102. The upper end of the second piston rod 4 is provided with an inwardly recessed conical groove. The outer wall of the steel ball 5 can abut against the side wall of the conical groove. There is a gap between the side wall of the steel ball 5 and the side wall of the second liquid chamber 102. Under normal conditions, the steel ball 5 is subjected to gravity and abuts against the conical groove to close the upper end of the liquid inlet channel 41. When the pump core is pressed, the liquid is pressured to push open the steel ball 5 and enter the second liquid chamber 102.

[0024] like Figure 2 As shown, the connector 3 is slidably connected to the first piston rod 2. The first piston rod 2 is provided with a liquid outlet channel 21. The upper end of the connector 3 can abut against the lower end of the liquid outlet channel 21. The first piston rod 2 is provided with a step 22. The step 22 is located at the lower end of the liquid outlet channel 21. The connector 3 includes a conical surface 31. When the conical surface 31 abuts against the edge of the step 22, it blocks the first liquid chamber 101 and the liquid outlet channel 21. Under the action of the spring 6, the conical surface 31 always abuts against the step 22 in the normal state, so that the connector 3 remains abutting against the lower end of the closed liquid outlet channel 21 in the normal state.

[0025] The first piston rod 2 is provided with a slot 23, and the connector 3 is at least partially located in the slot 23. There is a gap between the inner wall of the slot 23 and the side wall of the connector 3 for the feed liquid to pass through. The connector 3 and the first piston rod 2 are coaxially arranged. A part of the side wall of the slot 23 is slidably connected to the side wall of the connector 3. The side wall of the slot 23 is provided with a protrusion, which slides in contact with the side wall of the connector 3 to provide support for the connector 3 when sliding with the first piston rod 2. The upper end of the connector 3 is provided with an end block 33. The upper end of the end block 33 is tapered with a diameter that gradually decreases upward. The tapered end block 33 can extend into the liquid outlet channel 21 to provide guidance for the upper end of the connector 3 to reset.

[0026] The pump core in this embodiment includes a first state, a second state, and a third state, such as... Figure 1 As shown, in the first state, which is the normal state, the steel ball 5 seals the upper end of the liquid inlet channel 41, and the upper end of the connector 3 seals the lower end of the liquid outlet channel 21.

[0027] like Figure 3 As shown, in the second state, when the first piston rod 2 is in the initial state of pressing, the liquid inlet channel 41 is connected to the second liquid chamber 102. As the first piston rod 2 presses the material, it gradually enters the first liquid chamber 101, and the pressure in the first liquid chamber 101 will gradually increase until it reaches the critical point.

[0028] like Figure 4 As shown, when the pressure in the first liquid chamber 101 is greater than the critical point, the pump core will enter the third state. The pressure in the first liquid chamber 101 is greater than the supporting force of the spring 6 at this time. Since the connecting piece 3 is fixedly connected to the second piston rod 4 and slidably connected to the first piston rod 2, the hydraulic pressure in the first liquid chamber 101 will push the connecting piece 3 and the second piston rod 4 to move downward. The upper end of the connecting piece 3 leaves the lower end of the liquid outlet channel 21, and the cone surface 31 leaves the step 22. The first liquid chamber 101 connects to the liquid outlet channel 21. At the moment of connection, the liquid in the first liquid chamber 101 is depressurized and enters the liquid outlet channel 21 and sprays outward. After depressurization, the cone surface 31 immediately abuts against the step 22, so that the sprayed liquid has a large spray pressure and good atomization effect, and there will be no final dripping.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A pressure-relief spray pump core, characterized in that, The pump housing includes a pump casing (1), a first piston rod (2), a connector (3), a second piston rod (4), a steel ball (5), and a spring (6). The pump casing (1) includes a first section (11) and a second section (12). The first piston rod (2) can slide along the first section (11). The second piston rod (4) is located inside the pump casing (1) and can slide along the second section (12). The spring (6) is located inside the second section (12) and abuts against the lower end of the second piston rod (4). A first fluid is formed between the first piston rod (2) and the second piston rod (4). The first liquid chamber (101) is formed between the first liquid chamber (101) and the second piston rod (4), and the second liquid chamber (102) is formed between the first liquid chamber (101) and the second piston rod (4). The side wall of the second piston rod (4) is provided with a through hole (32), which connects the first liquid chamber (101) and the second liquid chamber (102). A steel ball (5) is installed in the second liquid chamber (102). The first piston rod (2) is slidably connected to the first piston rod (2). The first piston rod (2) is provided with a liquid outlet channel (21), and the upper end of the first piston rod (3) can abut against the lower end of the liquid outlet channel (21).

2. The pressure relief spray pump core according to claim 1, characterized in that, The second piston rod (4) includes a first state, a second state, and a third state. The second piston rod (4) includes a liquid inlet channel (41) that connects the second interval (12) and the second liquid chamber (102). In the first state, the steel ball (5) closes the upper end of the liquid inlet channel (41), and the upper end of the connector (3) closes the lower end of the liquid outlet channel (21). In the second state, the liquid inlet channel (41) is connected to the second liquid chamber (102). In the third state, the upper end of the connector (3) leaves the lower end of the liquid outlet channel (21), and the first liquid chamber (101) is connected to the liquid outlet channel (21).

3. The pressure relief spray pump core according to claim 1, characterized in that, Part of the second piston rod (4) is inserted into the connector (3). The upper end of the second piston rod (4) is provided with an inwardly recessed conical groove. The outer wall of the steel ball (5) can abut against the side wall of the conical groove. There is a gap between the side wall of the steel ball (5) and the side wall of the second liquid cavity (102).

4. The pressure relief spray pump core according to claim 1, characterized in that, The first piston rod (2) is provided with a step (22), the step (22) is located at the lower end of the liquid outlet channel (21), and the connector (3) includes a conical surface (31). When the conical surface (31) abuts against the edge of the step (22), it blocks the first liquid chamber (101) and the liquid outlet channel (21).

5. The pressure relief spray pump core according to claim 1, characterized in that, The first piston rod (2) is provided with a slot (23), and the connector (3) is at least partially located in the slot (23), and a portion of the sidewall of the slot (23) is slidably connected to the sidewall of the connector (3).

6. The pressure relief spray pump core according to claim 1, characterized in that, The upper end of the connector (3) is provided with an end block (33), and the upper end of the end block (33) is a cone shape with a diameter that gradually decreases upward.

7. The pressure relief spray pump core according to claim 1, characterized in that, The side wall of the first piston rod (2) is piston-connected to the inner side wall of the first interval (11), and the side wall of the second piston rod (4) is piston-connected to the inner side wall of the second interval (12).

8. The pressure relief spray pump core according to claim 2, characterized in that, The pump housing (1) has an opening at its lower end, which is connected to the liquid inlet channel (41). A shoulder sleeve (7) is installed at the upper opening of the pump housing (1), and a portion of the first piston rod (2) passes through the shoulder sleeve (7).

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