Press-type jet pump and container

Abstract

The utility model discloses a push type jet pump and container, including pump body, piston, pressure head, elastic reset piece, the piston moves relative to the pump body so as to pump liquid into the pump body and then spray out through the nozzle, one end of the piston and the pump body form a water storage chamber oppositely, and the other end of the piston and the pump body form a water storage chamber. A variable-pressure bin is oppositely formed between the other end of the piston and the pressure head; the water storage bin is communicated with the variable-pressure bin through a first water outlet channel, and the nozzle is communicated with the variable-pressure bin through a second water outlet channel; the piston moves relative to the pump body so as to press liquid in the water storage bin into the variable-pressure bin; and a pre-sealing structure for the variable-pressure bin is formed at the joint of the piston and the pressure head. According to the utility model, through the wedged sealing design characteristic of the piston and the interior of the pressing head, the anti-seepage effect is achieved, the pressing type injection pump avoids the seepage process and directly sprays liquid with better expression, and the use experience of the pressing type injection pump is greatly optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of manual pumps, in particular to a push-type jet pump and a container. Background Art

[0002] A push-type spray pump is usually installed on a container and is used to spray various liquids stored in the container, such as perfumes, pharmaceutical products, cosmetics, cleaning products, etc. Generally speaking, a push-type spray pump is a device that sprays liquid outward only when the liquid is subjected to a certain minimum pressure in the water storage tank. This method can ensure that the liquid can be sprayed better at a higher pressure.

[0003] In the prior art, there are push-type jet pumps with various structural forms, such as application number 2022109772488. This push-type jet pump can effectively achieve the anti-liquid seepage effect, but the entire compression pump is composed of up to 15 accessories and has a very complicated structure.

[0004] Therefore, how to design a push-type spray pump and a container with a simplified structure and effectively improved spraying effect is a technical problem that needs to be solved urgently in the industry. Utility Model Content

[0005] In order to solve the above-mentioned defects in the prior art, the utility model proposes a push-type injection pump with a simplified structure and anti-liquid seepage, and a container with the pump. By increasing the pre-pressure before liquid injection, the liquid can be injected only when it reaches a certain pressure, thereby achieving an anti-liquid seepage effect.

[0006] The technical solution adopted by the utility model is to design a press-type jet pump for extracting liquid by pressing and then spraying it from a nozzle. The jet pump includes a pump body, a piston moving relative to the pump body, a pressure head pressing the piston, and an elastic reset member supported between the piston and the pump body. The piston moves relative to the pump body to pump liquid into the pump body and then spray it through the nozzle. A water storage tank is formed between one end of the piston and the pump body, and a pressure change tank is formed between the other end of the piston and the pressure head. The water storage tank is connected to the pressure change tank through a first water outlet channel, and the nozzle is connected to the pressure change tank through a second water outlet channel. The piston moves relative to the pump body to press the liquid in the water storage tank into the pressure change tank. The joint between the piston and the pressure head forms a pre-sealing structure for the pressure change tank. When the liquid pressure in the pressure change tank rises to a certain value, the pre-sealing structure between the piston and the pressure head can be opened, thereby making the second water outlet channel conductive.

[0007] In some embodiments, the voltage transformer chamber includes an annular groove located on the pressure head, the piston end has a flange that can be inserted into the annular groove, the annular groove has a tapered side wall, and the end flange of the piston presses against the tapered side wall of the annular groove to form a pre-sealing structure for the voltage transformer chamber.

[0008] In certain embodiments, the pressure head is provided with an elastic retaining ring surrounding the piston, and the piston is provided with a wedge-shaped protrusion for pressing the elastic retaining ring.

[0009] In some embodiments, the pressure head is connected to the pump body in a sliding fit.

[0010] In certain embodiments, the pressure head end is slidably mounted on the pump body, and the pressure head end and the pump body end are provided with limiting protrusions for limiting the separation of the two.

[0011] In some embodiments, the elastic return member is a cylindrical spring.

[0012] In some embodiments, the pump body includes a pump chamber located in the water storage tank, the piston includes an inner column located in the water storage tank, one end of the pump chamber has a water sealing line that cooperates with the inner column for sliding sealing, the other end of the pump chamber is connected to a water inlet channel, the first end of the inner column is located in the pump chamber, and the second end of the inner column is provided with an exhaust adjustment position, and when the exhaust adjustment position corresponds to the water sealing line, the pump chamber is connected to the water storage tank.

[0013] In some embodiments, the second end of the inner column has a ventilation groove, and when the ventilation groove corresponds to the water sealing line, the pump chamber is connected to the water storage tank.

[0014] The container comprises the push-type injection pump.

[0015] In certain embodiments, the pump body has a bayonet for connecting to the opening of the container.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model achieves the anti-liquid seepage effect through the wedge-type sealing design feature of the piston and the inside of the push head. The push-type jet pump avoids the liquid seepage process and directly sprays the liquid with better performance, which greatly optimizes the user experience of the push-type jet pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is described in detail below in conjunction with specific embodiments and drawings. In order to show details and facilitate understanding of its principles, it is not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them:

[0019] Figure 1 This is a schematic diagram of a push-type injection pump.

[0020] Figure 2 This is a schematic diagram of the push-type injection pump after the pressure head is pressed down.

[0021] Figure 3 This is a schematic diagram showing the pressure head of the push-type injection pump being pushed upward.

[0022] Figure 4 This is a schematic diagram of a push-type injection pump installed on a container. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required for the solution of the utility model.

[0024] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0025] Embodiment 1

[0026] like Figure 1 As shown, a push-type jet pump is provided in the utility model, which is suitable for being installed on a container for storing liquid, and is used for extracting liquid by pressing and then spraying it out from a nozzle.

[0027] The jet pump comprises a pump body, a piston moving relative to the pump body, a pressure head pressing the piston, and an elastic return member supported between the piston and the pump body, wherein the elastic return member is a cylindrical spring, and the piston moves relative to the pump body so as to pump liquid into the pump body and then spray it out through a nozzle; a water storage tank is formed between one end of the piston and the pump body, and a pressure-changing tank is formed between the other end of the piston and the pressure head; the water storage tank is connected to the pressure-changing tank through a first water outlet channel, and the nozzle is connected to the pressure-changing tank through a second water outlet channel; the piston moves relative to the pump body so as to press the liquid in the water storage tank into the pressure-changing tank; specifically, Figure 1As shown, the piston 3 is installed at the end of the pump body 5, and the pressure head assembly is installed on the top of the piston 3. A water storage tank 10 is provided between the piston 3 and the pump body 5, a first water outlet channel 9 is provided inside the piston 3, a pressure change tank 8 is provided between the piston 3 and the pressure head 2, the first water outlet channel 9 connects the water storage tank 10 and the pressure change tank 8, a second water outlet channel 7 is provided inside the pressure head, and the liquid in the water storage tank 10 can enter the pressure change tank 8 and then be sprayed out from the nozzle 1 through the second water outlet channel 7.

[0028] The pump body includes a pump chamber located in the water storage tank, the piston includes an inner column located in the water storage tank, one end of the pump chamber has a water sealing line that is slidably sealed with the inner column, the water sealing line is a circle of protrusions in the pump chamber, the other end of the pump chamber is connected to the water inlet channel, the first end of the inner column is located in the pump chamber, the second end of the inner column is provided with an exhaust adjustment position, the exhaust adjustment position is a groove or a convex ridge so that when the part moves to the water sealing line, a gap is generated between the water sealing line and the piston so that the pump chamber is connected to the water storage tank. The second end of the inner column has a ventilation groove, and when the ventilation groove corresponds to the water sealing line, the pump chamber is connected to the water storage tank.

[0029] like Figure 1 As shown, the push-type jet pump is in a natural state. At this time, the pressure head assembly is pressed, and the pressure head assembly drives the piston 3 to move downward to overcome the pre-pressure of the spring 4. At this time, the lower sealing surface 14 of the piston 3 forms a seal with the inner wall 19 of the pump body 5, the inner column 18 of the piston 3 forms a seal with the water sealing line 17 at the end of the water inlet channel 21 of the pump body 5, and the upper sealing position 11 of the piston 3 forms a seal with the taper 15 of the pressure head 2. At this time, the water storage tank 10 and the first water outlet channel 9 and the pressure change tank 8 are a connected enclosed space. As the pressure head assembly moves the piston 3 downward, the volume of the enclosed space becomes smaller, and the air in the enclosed space is compressed.

[0030] like Figure 2 As shown in FIG. 1 , when the pressure head assembly moves downward to the set position, as shown in FIG. Figure 2 As shown, at this time, since the exhaust adjustment position 13 at the root of the inner column 18 of the piston 3 contacts the water sealing line 17 at the end of the water inlet channel 21 of the pump body 5, the compressed air enters the container from the exhaust adjustment position 13 through the water inlet channel 21.

[0031] like Figure 3As shown, the pressure head assembly is then released, and under the pre-pressure of the spring 4, the piston 3 drives the pressure head assembly to move upward. At this time, the exhaust adjustment position 13 in the piston 3 is separated from the water sealing line 17 of the pump body 5, and the connecting space is restored to be closed. Due to the increase in space, a vacuum is formed in the closed space. When it moves upward to the natural position, the inner column 18 of the piston 3 is separated from the water sealing line 17 of the pump body 5, and the ventilation groove 22 makes the pump chamber connected with the water storage tank. The thinner end of the piston also separates the inner column from the water sealing line, that is, there is a gap between the two, so that liquid can pass through. Under the action of the vacuum force in the connecting space, the liquid in the container enters the water storage tank 10. After several cycles, the space in the water storage tank is filled with liquid.

[0032] The joint between the piston and the pressure head forms a pre-sealing structure for the pressure changing chamber. When the liquid pressure in the pressure changing chamber rises to a certain value, the pre-sealing structure between the piston and the pressure head can be opened, thereby making the second water outlet channel conductive.

[0033] Specifically, the embodiment adopts that the voltage-changing chamber includes an annular groove located on the pressure head, the end of the piston has a flange that can be inserted into the annular groove, the flange is the upper sealing position 11, the annular groove has a conical side wall, the side wall is the conical position 15 of the pressure head 2, and the end flange of the piston is pressed on the conical side wall of the annular groove to form a pre-sealing structure for the voltage-changing chamber.

[0034] Relying on the elastic force of the spring 4 to support the piston 3, the upper sealing position 11 is wedged into the taper 15 and the cylinder 16 inside the pressure head 2 to seal it. When the water storage tank is filled with liquid, the pressure head assembly is pressed. Since the liquid is incompressible, the pressure in the liquid will give the piston 3 a downward pressure. When this pressure exceeds the sum of the pre-pressure of the spring 4 and the wedging friction of the piston 3 wedging into the pressure head 2, the piston 3 moves downward relative to the pressure head 2, and the upper sealing position 11 is disengaged from the taper position 15 of the pressure head 2. At this time, the middle sealing position of the piston 3 remains sealed with the inner wall 20 of the pressure head, and the pressurized liquid passes through the second water outlet channel 7 and is sprayed by the nozzle 1.

[0035] In order to achieve the spraying effect, the traditional push-type jet pump must start to spray out only when the liquid in the water storage tank reaches a certain minimum pressure. However, due to the low pressure at this time, the sprayed liquid is linear or sprayed in the form of seepage. Only when a greater pressing pressure is reached can the liquid show a better spray. The spraying effect is greatly dependent on the user's pressing force, and the user experience is not good.

[0036] The push-type jet pump proposed by the utility model can effectively avoid the problem of liquid seepage, and its working principle is as follows: in order to make the downward pressure on the piston 3 in the transformer chamber 8 reach a specific minimum pressure - the sum of the pre-pressure of the spring 4 and the wedging friction force of the piston 3 in the external conical and internal cylindrical features when it is wedged into the push head 2, the push head assembly needs to provide a larger pressure, so as to ensure that the liquid will not spray at a lower pressure. When the pressing pressure reaches a higher level, the piston 3 will quickly open a larger channel due to the inertia of the larger disengagement force. The push-type jet pump avoids the liquid seepage process and directly sprays the liquid with better performance, greatly optimizing the user experience of the push-type jet pump.

[0037] The pressure head is provided with an elastic retaining ring surrounding the piston, and the piston is provided with a wedge-shaped protrusion 12 for pressing the elastic retaining ring, so that the pressure head provides a certain upward resistance to the piston through the elastic retaining ring. The elastic retaining ring is a part of the pressure head, and is integrally formed by the material to provide elastic force by utilizing the deformation ability of the material itself. The material is generally plastic, so it has good elastic force.

[0038] The pressure head is connected to the pump body in a sliding manner, and the end of the pressure head is slidably sleeved on the pump body. The end of the pressure head and the end of the pump body are provided with limiting protrusions to limit the separation of the two, that is, the bottom of the pressure head is slidably sleeved on the outer side of the upper end of the pump body.

[0039] like Figure 4 As shown, the pump body has a snap-on connection with the opening of the container 30 , so that the bottom of the pump body can be connected to the opening of the container 30 by snapping.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them in similar ways, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A press-type jet pump is used to extract liquid by pressing and then spray it out from a nozzle. The jet pump includes a pump body, a piston moving relative to the pump body, a pressure head pressing the piston, and an elastic reset member supported between the piston and the pump body. The piston moves relative to the pump body to pump liquid into the pump body and then spray it out through the nozzle. It is characterized in that: One end of the piston and the pump body are opposite to form a water storage chamber, and the other end of the piston and the pressure head are opposite to form a pressure changing chamber; The water storage tank is connected to the pressure changing tank through a first water outlet channel, and the nozzle is connected to the pressure changing tank through a second water outlet channel; The piston moves relative to the pump body to press the liquid in the water storage tank into the pressure changing tank; The joint between the piston and the pressure head forms a pre-sealing structure for the pressure changing chamber. When the liquid pressure in the pressure changing chamber rises to a certain value, the pre-sealing structure between the piston and the pressure head can be opened, thereby making the second water outlet channel conductive.

2. The push-type injection pump according to claim 1, characterized in that: The voltage-changing chamber includes an annular groove on the pressure head, the piston end has a flange that can be inserted into the annular groove, the annular groove has a tapered side wall, and the end flange of the piston presses against the tapered side wall of the annular groove to form a pre-sealing structure for the voltage-changing chamber.

3. The push-type injection pump according to claim 1, characterized in that: The pressure head is provided with an elastic retaining ring surrounding the piston, and the piston is provided with a wedge-shaped protrusion for pressing the elastic retaining ring.

4. The push-type injection pump according to claim 1, characterized in that: The pressure head is connected to the pump body in a sliding manner.

5. The push-type injection pump according to claim 4, characterized in that: The end of the pressure head is slidably sleeved on the pump body, and the end of the pressure head and the end of the pump body are provided with limiting protrusions for limiting the separation of the two.

6. The push-type injection pump according to claim 1, characterized in that: The elastic reset member is a cylindrical spring.

7. The push-type injection pump according to claim 1, characterized in that: The pump body includes a pump chamber located in the water storage tank, the piston includes an inner column located in the water storage tank, one end of the pump chamber has a water sealing line that cooperates with the inner column for sliding sealing, the other end of the pump chamber is connected to the water inlet channel, the first end of the inner column is located in the pump chamber, and the second end of the inner column is provided with an exhaust adjustment position, and when the exhaust adjustment position corresponds to the water sealing line, the pump chamber is connected to the water storage tank.

8. The push-type injection pump according to claim 7, characterized in that: The second end of the inner column is provided with a ventilation groove, and when the ventilation groove corresponds to the water sealing line, the pump chamber is communicated with the water storage tank.

9. A container, characterized in that It comprises a push-type injection pump as described in any one of claims 1 to 8.

10. The container according to claim 9, characterized in that The pump body is provided with a bayonet for connecting with the container opening.

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