A spring-mounted overflow-proof pressure pump

Abstract

A spring-mounted anti-overflow pressing pump includes a pressing head, a main column, a screw thread, a main body, a locking cover and a spring. The liquid inlet channel is inserted into the annular connecting cavity, and the spring is respectively inserted into the spring internal cavity and the lower spring seat. The inverted frustum-shaped valve core is slidably matched with the liquid guide tube and the axial protrusion, and the guide sleeve is slidably matched with the liquid guide tube and the axial protrusion; in the locked state, the axial protrusion is located below the inverted frustum-shaped valve core; during the pressing action, the gap between the axial protrusions and the inverted frustum-shaped valve core constitute an axial air channel for the outside air to quickly enter the cavity, and the gap between the axial protrusions and the guide sleeve constitute an air axial channel; the air replenishment hole is adjacent to the lower end of the cavity. Due to the use of such a structure, the outside air quickly enters the cavity of the locking cover and quickly enters the bottle or container through the air replenishment hole; it prevents residual liquid in the air replenishment hole, which causes the bottle or container to absorb vacuum and deform.

Description

Technical Field

[0001] The invention relates to a pressing pump arranged on a container. Background Art

[0002] The existing technology at present is a spring external pressing pump, including a pressing head, a main column, a screw thread, a body, a locking cover and a spring. The pressing head includes a liquid inlet channel, a liquid outlet channel and an annular sleeve surrounding the liquid inlet channel. The locking cover includes a cavity part with an upper opening, a flange and a connecting seat surrounding the cavity part. The body includes an air-injection hole, an annular joint and a flange. The air-injection hole is adjacent to the flange. The upper end of the annular joint passes through the through hole on the screw thread, and the annular joint is inserted into the annular plug-in groove of the connecting seat. The liquid inlet channel is connected to the main column, and the main column cooperates with the cavity part of the locking cover. The existing problems are: the outside air cannot quickly enter the bottle body or the container, there is residual liquid in the air-injection hole, and the liquid in the pump body cannot quickly flow back into the bottle or container, causing the bottle to deform due to vacuum absorption. Summary of the invention

[0003] The purpose of the present invention is to provide a spring-mounted overflow-proof press pump, which has the characteristics of preventing the bottle from being deformed and the liquid in the pump body from quickly flowing back into the bottle.

[0004] The present invention is implemented as follows: a spring-mounted overflow-proof pressing pump comprises a pressing head, a main column, a screw thread, a main body, a locking cover and a spring, the pressing head comprises a liquid inlet channel and a liquid outlet channel, the locking cover comprises a cavity part with an upper opening, a flange and a connecting seat surrounding the cavity part, the main body comprises an air replenishing hole, an annular joint and a flange, the upper end of the annular joint passes through the through hole on the screw thread, and the annular joint is inserted into the annular plug-in groove of the connecting seat; the liquid inlet channel is connected to the main column, and the main column cooperates with the cavity part of the locking cover; its special feature is that the main column comprises a cylindrical body part, a liquid guide tube and a partition plate arranged in the cylindrical body part to connect the liquid guide tube and the cylindrical body part, the space between the liquid guide tube and the cylindrical body part located at the upper part of the partition plate constitutes an annular connecting cavity, and the space between the liquid guide tube and the cylindrical body part located at the lower part of the partition plate constitutes a spring built-in cavity; a plurality of axial protrusions are provided on the liquid guide tube,

[0005] The cavity part of the lock cover comprises a guide hole arranged on the bottom plate, a guide sleeve arranged on the bottom plate of the cavity part and surrounding the upper end of the guide hole, an annular cylinder surrounding the guide sleeve, a valve seat arranged on the outer bottom plate of the cavity, and an inverted frustum cone-shaped valve core arranged in the valve seat; the space between the annular cylinder and the guide sleeve constitutes a lower spring seat;

[0006] The liquid inlet channel is inserted into the annular connecting cavity, the spring is respectively inserted into the spring built-in cavity and the lower spring seat, the inverted frustum-shaped valve core is slidably matched with the liquid guide tube and the axial protrusion, and the guide sleeve is slidably matched with the liquid guide tube and the axial protrusion; in the locked state, the axial protrusion is located below the inverted frustum-shaped valve core; during the pressing action, the gap between the axial protrusions and the inverted frustum-shaped valve core constitute an axial air channel for external air to quickly enter the cavity part, and the gap between the axial protrusions and the guide sleeve constitute an axial air channel; the air replenishing hole is adjacent to the lower end of the cavity part.

[0007] The special feature of the spring-mounted overflow-proof pressing pump is that an annular protrusion is provided on the liquid guide tube at the upper part of the axial protrusion;

[0008] An annular guide sealing protrusion is provided on the inner wall of the guide sleeve; in the locked state, the annular sealing protrusion is buckled with the annular protrusion; during the pressing action, the axial protrusion and the annular guide sealing protrusion are slidably matched.

[0009] The special feature of the spring-mounted overflow-proof pressing pump is that the upper end of the annular guide sealing protrusion is in the shape of an inverted truncated cone, and the lower end is a plane.

[0010] The invention discloses an anti-overflow pressing pump with an external spring. Due to the structure, external air quickly enters the cavity of the lock cover and quickly enters the bottle or container through the air replenishing hole, thereby preventing residual liquid in the air replenishing hole from causing the bottle or container to deform due to vacuum absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the present invention.

[0012] Figure 2 yes Figure 1 A-A view of.

[0013] Figure 3 yes Figure 2 A partial enlarged view of

[0014] Figure 4 It is one of the three-dimensional exploded views of the present invention.

[0015] Figure 5 It is the second of the three-dimensional exploded diagrams of the present invention.

[0016] Figure 6 It is a three-dimensional cross-sectional view of the lock cover of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like Figure 1As shown, a spring-mounted overflow-proof pressing pump comprises a pressing head 1, a main column 2, a screw thread 3, a main body 4, a locking cover 5, a spring 6 and a piston 7. The pressing head 1 comprises a liquid inlet channel 11, a liquid outlet channel 12 and an annular sleeve 13 surrounding the liquid inlet channel. The locking cover 5 comprises a cavity portion 51 with an upper opening, a flange 52 and a connecting seat 53 surrounding the cavity portion. The main body 4 comprises an air replenishing hole 41, an annular joint 42 and a flange 43. The upper end of the annular joint 42 passes through the through hole on the screw thread 3, and the annular joint 42 is inserted into the annular plug-in groove of the connecting seat 53. The liquid inlet channel 11 is connected to the main column 2, and the main column 2 cooperates with the cavity portion 51 of the locking cover 5.

[0019] The main column 2 comprises a cylindrical body 21, a liquid guide tube 22 and a partition 23 arranged in the cylindrical body to connect the liquid guide tube and the cylindrical body. The space between the liquid guide tube 22 and the cylindrical body located at the upper part of the partition constitutes an annular connecting cavity 24, and the space between the liquid guide tube and the cylindrical body located at the lower part of the partition constitutes a spring built-in cavity 25. The liquid guide tube 22 is provided with a plurality of axial protrusions 221.

[0020] The cavity part 51 of the lock cover 5 comprises a guide hole 54 arranged on the bottom plate, a guide sleeve 55 arranged on the bottom plate of the cavity part and surrounding the upper end of the guide hole, an annular cylinder 56 surrounding the guide sleeve, a valve seat 57 arranged on the outer bottom plate of the cavity, and an inverted frustum cone-shaped valve core 58 arranged in the valve seat; the space between the annular cylinder 56 and the guide sleeve 55 constitutes a lower spring seat;

[0021] The liquid inlet channel 11 is inserted into the annular connecting cavity 24, the spring 6 is respectively inserted into the spring built-in cavity 25 and the lower spring seat, and the inverted frustum-shaped valve core 58 cooperates with the liquid guide tube 22 and the axial protrusion 221; in the locked state, the axial protrusion 221 is located below the inverted frustum-shaped valve core 58, as shown in FIG. Figure 2 As shown, during the pressing action, the gap between the axial protrusions 221 and the inverted frustum-shaped valve core 58 form an axial air passage for the outside air to quickly enter the cavity; the gap between the axial protrusions 221 and the gap between the guide sleeves 55 form an axial air passage; the air supplement hole 41 is adjacent to the lower end of the cavity 51;

[0022] With such a structure, when the pressing head 1 is pressed, the pressing head 1 and the main column 2 move downward together, and the axial protrusion 221 slides with the guide sleeve 55 and the inverted frustum cone valve core 58, and the outside air quickly enters the body 4, that is, the body 4 between the cavity 51 of the lock cover 5 and the piston 7, through the air axial channel and the axial air channel; and then quickly enters the bottle body or container through the air supplement hole 41. When liquid flows into the pump body, that is, when liquid flows into the body 4 between the cavity 51 of the lock cover 5 and the piston 7, it flows back into the bottle body or container through the air supplement hole 41, so as to prevent the liquid from entering the cavity 51 and contaminating the spring.

[0023] In the existing technology, the air replenishing hole 41 is located at the upper part of the body, far away from the lower end of the cavity 51, and the air flow path is long, and the air cannot quickly enter the bottle body through the air replenishing hole.

[0024] Figure 1 , Figure 2 This is a view of the main column 2 and the lock cover 5 of the present invention in a locked state. After unlocking, under normal conditions, under the action of the spring 6, the axial protrusion 221 of the liquid guide tube 22 is located above the guide sleeve 55; the push head 1 is pressed, the push head 1 and the main column 2 move downward, the liquid guide tube 22 slides with the guide sleeve 55 and the inverted frustum cone valve core 58, and the axial protrusion 221 first passes through the guide sleeve 55 and then passes through the inverted frustum cone valve core 58, and the outside air is sent into the body 4.

[0025] An annular protrusion 222 is provided on the liquid guiding tube 22 above the axial protrusion 221;

[0026] An annular guide sealing protrusion 551 is provided on the inner wall of the guide sleeve 55 . In the locked state, the annular guide sealing protrusion 551 is buckled with the annular protrusion 222 . During the pressing action, the axial protrusion 221 and the annular guide sealing protrusion 511 are slidably matched.

[0027] The annular guide sealing protrusion 551 has an inverted truncated cone shape at the upper end and a flat surface at the lower end.

[0028] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, which are also considered as the protection scope of the present invention.

Claims

1. A spring-mounted overflow-proof pressing pump, comprising a pressing head, a main column, a screw thread, a body, a locking cover and a spring, wherein the pressing head comprises a liquid inlet channel and a liquid outlet channel, the locking cover comprises a cavity portion with an upper opening, a flange and a connecting seat surrounding the cavity portion, the body comprises an air replenishing hole, an annular joint and a flange, the upper end of the annular joint passes through a through hole on the screw thread, and the annular joint is inserted into an annular plug-in groove of the connecting seat; the liquid inlet channel is connected to the main column, and the main column cooperates with the cavity portion of the locking cover; the characteristics are: The main column comprises a cylindrical body, a liquid guide tube and a partition disposed in the cylindrical body to connect the liquid guide tube and the cylindrical body. The space between the liquid guide tube and the cylindrical body located at the upper part of the partition constitutes an annular connecting cavity, and the space between the liquid guide tube and the cylindrical body located at the lower part of the partition constitutes a spring built-in cavity. The liquid guide tube is provided with a plurality of axial protrusions. The cavity part of the lock cover comprises a guide hole arranged on the bottom plate, a guide sleeve arranged on the bottom plate of the cavity part and surrounding the upper end of the guide hole, an annular cylinder surrounding the guide sleeve, a valve seat arranged on the outer bottom plate of the cavity, and an inverted frustum cone-shaped valve core arranged in the valve seat; the space between the annular cylinder and the guide sleeve constitutes a lower spring seat; The liquid inlet channel is inserted into the annular connecting cavity, the spring is respectively inserted into the spring built-in cavity and the lower spring seat, the inverted frustum-shaped valve core is slidably matched with the liquid guide tube and the axial protrusion, and the guide sleeve is slidably matched with the liquid guide tube and the axial protrusion; in the locked state, the axial protrusion is located below the inverted frustum-shaped valve core; during the pressing action, the gap between the axial protrusions and the inverted frustum-shaped valve core constitute an axial air channel for external air to quickly enter the cavity part, and the gap between the axial protrusions and the guide sleeve constitute an axial air channel; the air replenishing hole is adjacent to the lower end of the cavity part.

2. The spring-mounted overflow-proof press pump according to claim 1, characterized in that: An annular protrusion is provided on the liquid guiding tube at the upper part of the axial protrusion; An annular guide sealing protrusion is provided on the inner wall of the guide sleeve; in the locked state, the annular sealing protrusion is buckled with the annular protrusion; during the pressing action, the axial protrusion and the annular guide sealing protrusion are slidably matched.

3. The spring-mounted overflow-proof press pump according to claim 2, characterized in that: The upper end of the annular guide sealing protrusion is in an inverted truncated cone shape, and the lower end is a plane.

Images