Axial water inlet and lateral water outlet valve core structure

Abstract

The application provides a valve core structure with axial water inlet and lateral water outlet, which comprises a press switch and a valve core, the valve core comprises a valve core main body cylinder, an axial front end of the valve core main body cylinder is provided with a water inlet, a front side wall of the valve core main body cylinder is provided with a water outlet, a sealing rod capable of moving axially forward and backward is arranged on a central axis in the valve core main body cylinder, the sealing rod is connected with the press switch, and the press switch controls the movement of the sealing rod. The application can be applied to a valve with axial water inlet and lateral water outlet, such as an angle valve, and light opening press feeling and greater flow are provided. In addition, the valve core structure is simple and convenient to assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to a press type valve core structure, and in particular to a valve core that can be used in an angle valve. BACKGROUND

[0002] The press type valve core structure is often connected to the end of the pressing rod of a press switch, the press switch is provided with a button, the button is connected to the pressing rod, and the movement control structure in the press switch can provide two stop positions in the axial direction of the pressing rod, so that the valve core also has two stop positions, corresponding to the open and closed states of the valve.

[0003] The angle valve uses axial water inlet and lateral water outlet. For the press type valve core, when it is applied to the angle valve, it needs to resist the resistance of the front water pressure during the pressing operation from the closed state to the open state, and it will be difficult at the beginning, affecting the experience of operation. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a valve core structure with axial water inlet and lateral water outlet, which has small opening and closing resistance and improves the experience of operation. To this end, the present application adopts the following technical solutions:

[0005] The valve core structure with axial water inlet and lateral water outlet comprises a press switch and a valve core, the valve core comprises a valve core main body cylinder, the axial front end of the valve core main body cylinder is provided with a water inlet, the front side wall of the valve core main body cylinder is provided with a water outlet, a sealing rod capable of moving axially forward and backward is arranged on the central axis in the valve core main body cylinder, the sealing rod is connected to the press switch, and the press switch controls the movement of the sealing rod; characterized in that a fixed sealing seat is arranged in the valve core main body cylinder, the rear end of the fixed sealing seat is provided with a mounting seat of a sealing cover, and the sealing cover is placed on the mounting seat; the fixed sealing seat is provided with a water blocking isolation front part, the fixed sealing seat is provided with a water outlet cavity between the water blocking isolation front part and the sealing cover, and a rear water cavity is arranged in the valve core main body cylinder behind the sealing cover; the fixed sealing seat is provided with a water passage, the inlet of the water passage is arranged in the water blocking isolation front part, and the outlet of the water passage is arranged on the mounting seat; the sealing cover is provided with a flow hole communicating with the water passage, a front and rear movable sealing body in the middle, and a mounting top ring at the periphery, the front and rear movable sealing body is provided with a sealing hole matched with the sealing rod, and the rear water cavity communicates with the flow hole;

[0006] The sealing rod can be inserted into and separated from the sealing hole by the control of the push switch, so that the valve core structure is in a closed state and an open state respectively, in the closed state, the front-and-back movable sealing body is in sealing fit with the mounting seat, and the water outlet cavity and the rear water cavity are separated, in the open state, the front-and-back movable sealing body can move rearward under the action of the force in the rear direction, and a gap for water flow is formed between the front-and-back movable sealing body and the mounting seat, and in the open state, the rear water cavity is communicated with the water outlet cavity.

[0007] On the basis of the above technical solutions of the present application, the present application can further adopt the following technical solutions, or use the following technical solutions in combination:

[0008] The sealing cover is mounted by being clamped between the fixed sealing seat and the inner wall of the valve core main body cylinder through the mounting top ring, and the sealing cover is provided with a thin-walled section between the front-and-back movable sealing body and the mounting top ring.

[0009] The position of the overflow hole of the sealing cover protrudes from the water passage groove, and forms a flow blocking part.

[0010] The inside of the valve core main body cylinder is provided with an isolation structure rearward of the sealing cover, the isolation structure is provided with a rear sealing element mounting seat which is open forward, the bottom of the rear sealing element mounting seat is provided with a central hole for the sealing rod to pass through, the rear sealing element mounting seat is provided with a clamping structure, and the rear sealing element is tightly fixed on the bottom of the rear sealing element mounting seat through the cooperation of the clamping element and the clamping structure, and the rear sealing element is in sliding sealing fit with the sealing rod.

[0011] The isolation structure is formed with a spring seat at the back, and the return support spring of the push switch is arranged on the spring seat to support the sliding shaft of the switch through the support of the sealing rod.

[0012] The water inlet adopts a separate water inlet element, the water inlet element is clamped with the valve core main body cylinder and tightly presses the fixed sealing seat rearward, a first sealing ring is arranged between the rear end of the water inlet element and the fixed sealing seat to seal the water inlet element, the fixed sealing seat and the valve core main body cylinder, a second sealing ring is arranged at the rear of the fixed sealing seat to seal the fixed sealing seat and the valve core main body cylinder, and the water outlet is located between the first sealing ring and the second sealing ring.

[0013] The mounting seat of the push switch is threadedly connected with the rear end of the valve core main body cylinder, and the clamping seat of the rear part of the sealing rod is clamped and connected with the front end of the sliding shaft of the push switch, in assembly, the sliding shaft is pressed down, and the sliding shaft and the sealing rod are clamped and connected together.

[0014] The valve core structure of the present application can be applied to the valve with axial water inlet and lateral water outlet, such as the angle valve, and can provide lighter opening pressing feeling and greater flow rate. In addition, the valve core structure of the present application is simple in structure and convenient to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 4 is a sectional view of the valve core structure of the present application in the closed state of the valve.

[0016] Figure 2 Fig. 5 is a sectional view of the valve core structure of the present application in the open state of the valve.

[0017] Figure 3 Fig. 6 is an exploded view of the valve core structure of the present application.

[0018] Figure 4 Fig. 7 is a schematic view of the fixed sealing seat of the valve core structure of the present application.

[0019] Figure 5 Fig. 8 is a sectional view of the fixed sealing seat of the valve core structure of the present application. DETAILED DESCRIPTION

[0020] With reference to the drawings, in the present embodiment, the valve core structure of the present application with axial water inlet and lateral water outlet is the valve core structure for the angle valve, which comprises a press-type switch and a valve core. The valve core comprises a valve core main body cylinder 1, which is provided with a central hole for mounting the valve core assembly. The lower part in the drawing is the front direction, the axial front end of the valve core main body cylinder 1 is provided with a water inlet 2, the front side wall of the valve core main body cylinder 1 is provided with a water outlet 11, and in the valve core main body cylinder 1, a sealing rod 3 capable of moving axially forward and backward is arranged on the central axis of the valve core main body cylinder 1. The sealing rod 3 is connected with the press-type switch, so that the press-type switch can control the movement of the sealing rod 3.

[0021] The valve core main body cylinder 1 is provided with a fixed sealing seat 4, which can be a plastic part. The rear end of the fixed sealing seat 4 is provided with a mounting seat 41 of a sealing cover 5 for placing the sealing cover 5, which can be made of rubber or other elastic sealing material. The front end of the fixed sealing seat 4 is provided with a water-blocking isolation front part 42, which can be the front end wall of the fixed sealing seat 4, changing the direction of water flow so that it can flow from the water channel below to the rear water cavity behind the sealing cover 5. The fixed sealing seat 4 is provided with a water outlet cavity 43 arranged between the water-blocking isolation front part 42 and the sealing cover 5. The water outlet cavity 43 has a plurality of side wall water outlet holes 431 capable of communicating with a plurality of water outlets 11 of the valve core main body cylinder 1, and the rear part of the water outlet cavity 43 is open and sealed by the sealing cover 5. The sealing seat 4 and the valve core main body cylinder 1 are sealed by sealing rings 71 and 72 arranged on the front and rear sides of the water outlet 11.

[0022] The valve core structure is arranged in the valve core body cylinder 1, and a rear water cavity 12 is arranged behind the sealing cover 5; the fixed sealing seat 4 is provided with a water passing groove 44, the inlet of the water passing groove 44 is arranged on the water blocking and isolating front part 42, and the outlet is arranged on the mounting seat 41; the sealing cover 5 is provided with a flow hole 51 communicated with the water passing groove 44, a middle part movable sealing body 52, and a mounting top ring 53 arranged on the periphery, the movable sealing body 52 is provided with a sealing hole 54 matched with the sealing rod 3, and the rear water cavity 12 is communicated with the flow hole 51. The outer diameter of the mounting top ring 53 is substantially the same as the inner diameter of the valve core body cylinder 1, and the mounting top ring 53 is radially positioned.

[0023] The sealing rod 3 can be inserted into and separated from the sealing hole 54 by the control of the press switch, so that the valve core is in a closed state and an open state respectively. In the closed state, the movable sealing body 52 and the mounting seat 41 form a sealing fit, and the water outlet cavity 43 and the rear water cavity 12 are separated, by the positioning effect of the sealing rod 3 and the water pressure in the valve core. In the open state, the water flow direction is first backward from the water passing groove 44 to the rear water cavity 12, the movable sealing body 52 is acted on by the backward water flow and also by the backward movement of the sealing rod 3, and moves to the rear, so that the movable sealing body 52 and the mounting seat 41 are separated to form a gap 45 for water flow, in the open state, the rear water cavity 12 is communicated with the water outlet cavity 43, and the water flow can flow into the rear open part 46 of the water outlet cavity 43 through the gap 45, so that the water outlet amount is not restricted by the sealing hole 54, and the flow area of the rear open part 46 is much larger than that of the sealing hole 54, thus the sealing rod 3 can be made thinner, only meeting its own strength, which can greatly reduce the friction resistance when the switch is operated, so that the press operation is more comfortable. The fixed sealing seat 4 can be distributed with multiple water passing grooves 44, so as to further increase the flow and make the lifting force of the movable sealing body 52 more uniform. When the valve core enters the closed state from the open state, the sealing rod 3 enters the sealing hole 54, and a seal is formed between the sealing rod 3 and the sealing hole 54, water flows from the water passing groove 44 into the rear water cavity 12, because a seal has been formed between the sealing rod 3 and the sealing hole 54, the pressure in the rear water cavity 12 increases, the sealing cover 5 deforms, the movable sealing body 52 is reset to the mounting seat 41, the gap 45 is closed, and the final sealing is realized.

[0024] The sealing cover 5 is clamped between the fixed sealing seat 4 and the inner wall of the valve core body cylinder 1 (which can be the stepped surface 13 of the inner wall of the valve core body cylinder 1 or an annular component fixed on the inner wall of the valve core body cylinder 1) by the installation top ring 53, and the sealing cover 5 is provided with a thin-walled section 55 between the front and rear movable sealing body 52 and the installation top ring 53, so that not only the installation and positioning of the sealing cover are reliable, but also the lifting and lowering sealing action of the front and rear movable sealing body 52 is more sensitive, improving the operation performance and sealing performance of the valve core.

[0025] The sealing cover 5 is provided with an overflow hole 51, and the position of the overflow hole 51 protrudes from the water passage groove, forming a flow blocking part 56, which improves the performance of the rear water flow.

[0026] The inside of the valve core body cylinder 1 is provided with an isolation structure 13 behind the sealing cover 5, the isolation structure 13 is provided with a front opening rear sealing element mounting seat 14, and the bottom of the rear sealing element mounting seat 14 is provided with a center hole 15 for the sealing rod 3 to pass through; the rear sealing element mounting seat 14 is provided with a clamping structure, which can be a protrusion 16 on the inner wall of the mouth of the rear sealing element mounting seat 14. The rear sealing element 61 is tightly fixed on the bottom of the rear sealing element mounting seat 14 by cooperating with the protrusion 16 through the plastic clamping element 62, and the rear sealing element 61 is in sliding sealing cooperation with the sealing rod 3. This installation structure is very convenient for the installation of the internal sealing element 61 of the valve core, and can make the internal structure of the valve core be inserted and installed layer by layer, and the installation means is simple and convenient, and this layer-by-layer insertion and installation structure will be further described in the subsequent paragraphs.

[0027] The setting of the reset support spring 102 of the press switch can utilize the back shape of the isolation structure 13 (provided with the rear sealing element mounting seat 14), utilize the back shape to form a spring seat 140, the reset support spring 102 is arranged on the spring seat 140, and supports the sliding shaft 101 of the switch by supporting the sealing rod 3, and can also expand the diameter of the spring ring.

[0028] The water inlet 2 uses a single water inlet element which is clamped with the valve core body cylinder, the water inlet element is provided with a clamping jaw 21 which is inserted axially backward, the clamping jaw 21 is clamped by being inserted into the clamping hole 17 on the wall of the valve core body cylinder 1 and is pushed backward to tightly place the fixed sealing seat 4 which is placed behind the water inlet element, the fixed sealing seat 4 has been placed in the valve core body cylinder 1 before; the first sealing ring 71 is arranged between the rear end of the water inlet element and the fixed sealing seat 4 to seal the water inlet element, the fixed sealing seat 4 and the valve core body cylinder 1; the second sealing ring 72 is arranged at the rear of the fixed sealing seat 4 to seal the fixed sealing seat 4 and the valve core body cylinder 1, and the water outlet 11 is located between the first sealing ring 71 and the second sealing ring 72. When the water inlet element is pressed in, the sealing cover 5 is also tightly installed while the fixed sealing seat 4 is tightly pressed.

[0029] The rear of the water outlet 11 of the outer wall of the valve core body cylinder 1 is provided with a sealing ring mounting groove 18, the end of the water inlet element is also provided with a sealing ring mounting groove 22, the outer diameter of the valve core body cylinder 1 matches the inner diameter of the angle valve shell and is provided with an external thread 19, so that it can be inserted into the angle valve shell and be tightly installed by thread connection.

[0030] The switch assembly of the pressing switch includes a sliding shaft 101 with a certain length and a movement control mechanism which provides two rest positions in front and back directions of the pressing direction for the transmission shaft 101, corresponding to the closed state and the open state of the valve respectively. The movement control mechanism will be further described below.

[0031] The mounting seat 103 of the pressing switch is threadedly connected with the rear end of the valve core body cylinder 1, the front end of the sliding shaft 101 of the pressing switch is clamped and connected with the clamping seat 31 at the rear of the sealing rod 3, the clamping foot is arranged at the front end of the sliding shaft 101, the clamping seat 31 is arranged at the rear end of the sealing rod 3, the clamping hole 32 is arranged on the clamping seat 31, when assembling, the sliding shaft 101 is pressed down, so that the sliding shaft 101 and the sealing rod 3 are clamped and connected together. The front part of the clamping seat can also be used as the action part of the supporting spring 102.

[0032] The following is an example of the aforementioned motion control mechanism. Part of the structure of the motion control mechanism is provided on the sliding shaft 101, and another part of the structure is connected with the mounting seat 103, which is provided with a central hole for the sliding shaft 101 to pass through; wherein the structure of the motion control mechanism on the mounting seat 103 can be a stop hook 105 fixed together with the mounting seat 103 through a coil spring 104, and the structure on the sliding shaft 101 can be two stop positions provided on the surface of the pressure rod 101, which are respectively the rear stop position and the front stop position, and the first one-way sliding groove of the hook part of the stop hook, which makes the transmission shaft 101 move from the rear stop position to the hook part of the stop hook to cooperate with the front stop position, and the second one-way sliding groove, which makes the sliding shaft 101 move from the front stop position to cooperate with the hook part of the stop hook to the rear stop position; the first one-way sliding groove includes a first sliding path segment from the rear stop position to the rear, and a second sliding path segment connected with the first sliding path segment leading to the front stop position; the second one-way sliding groove includes a third sliding path segment from the front stop position, and a fourth sliding path segment connected with the third sliding path segment, which is connected to the rear stop position or connected to the first sliding path.

[0033] To achieve the one-way relative motion of the sliding groove and the hook part of the stop hook, it can be achieved by designing the groove wall of the sliding groove, or by designing the groove bottom of the sliding groove. In this embodiment, the groove bottom design is adopted to achieve more reliable switch operation and longer service life. The scheme is as follows: the first sliding path segment and the second sliding path segment are connected in a stepped manner, and at the connection, the groove bottom surface of the second sliding path segment is lower than the groove bottom surface of the first sliding path segment; the third sliding path segment and the fourth sliding path segment are connected in a stepped manner, and at the connection, the groove bottom surface of the fourth sliding path segment is lower than the groove bottom surface of the third sliding path segment; the second sliding path segment has a downward step near the lower stop position to connect with the third sliding path segment; the fourth sliding path segment and the first sliding path segment are connected in a stepped manner, and at the connection, the groove bottom surface of the first sliding path segment is lower than the groove bottom surface of the fourth sliding path segment.

[0034] It should be noted that the motion control mechanism is not the part to be improved by the present application, which is a prior art. The above description is only one example, and is not a limitation on the scope of the motion control mechanism of the present application. For example, a structure similar to the structure commonly used on a press-type ballpoint pen can also be used, which can also provide two stop positions for the transmission shaft 101 in the direction of being pressed.

[0035] In the description of the application, it needs to be understood that the terms "one end", "the other end", "outer side", "inner side", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. The terms "first", "second" are only used for convenience of description and do not indicate or imply relative importance.

[0036] The above is only a specific embodiment of the present application, but the structural features of the present application are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present application are covered by the protection scope of the present application.

Claims

1. A valve core structure with axial water inlet and lateral water outlet, comprising a push-button switch and a valve core, wherein the valve core includes a valve core body cylinder, an inlet is provided at the axial front end of the valve core body cylinder, an outlet is provided on the front side wall of the valve core body cylinder, and a sealing rod capable of axially moving back and forth is provided on the central axis inside the valve core body cylinder, the sealing rod being connected to the push-button switch, the push-button switch controlling the movement of the sealing rod; characterized in that... A fixed sealing seat is provided inside the valve core body cylinder, and a mounting seat for a sealing cover is provided at the rear end of the fixed sealing seat, on which the sealing cover is placed; the fixed sealing seat is provided with a water-blocking isolation front part, and a water outlet cavity is provided between the water-blocking isolation front part and the sealing cover; a rear water cavity is provided inside the valve core body cylinder behind the sealing cover; the fixed sealing seat is provided with a water passage groove, the inlet of which is located at the water-blocking isolation front part, and the outlet is located on the mounting seat; the sealing cover is provided with a flow hole communicating with the water passage groove, a movable sealing body in the middle, and a mounting top ring on the periphery; the movable sealing body is provided with a sealing hole that cooperates with the sealing rod; the rear water cavity communicates with the flow hole; The sealing rod can be inserted into and removed from the sealing hole by the control of the push-button switch, so that the valve core structure is in a closed state and an open state respectively. In the closed state, the movable sealing body forms a sealing fit with the mounting base, separating the outlet chamber and the rear chamber. In the open state, the movable sealing body can be moved backward by the force in the rearward direction, forming a gap for water supply between the movable sealing body and the mounting base. In the open state, the rear chamber communicates with the outlet chamber.

2. The valve core structure as described in claim 1, characterized in that... The sealing cover is installed by being clamped between the fixed sealing seat and the inner wall of the valve core body by a mounting top ring, and a thin-walled section is provided between the movable sealing body and the mounting top ring.

3. The valve core structure as described in claim 1, characterized in that... The location of the flow hole on the sealing cap protrudes from the water channel, forming a flow-blocking part.

4. The valve core structure as described in claim 1, characterized in that... An isolation structure is provided inside the valve core body cylinder behind the sealing cover. The isolation structure has a front-opening rear sealing element mounting seat. The bottom of the rear sealing element mounting seat has a central hole for the sealing rod to pass through. The rear sealing element mounting seat has a snap-fit ​​structure. The rear sealing element is pressed and fixed to the bottom of the rear sealing element mounting seat by the cooperation of the snap-fit ​​element and the snap-fit ​​structure. The rear sealing element and the sealing rod slide and seal in a sealing fit.

5. The valve core structure as described in claim 4, characterized in that... A spring seat is formed behind the isolation structure, and the reset support spring of the push-button switch is disposed on the spring seat, supporting the sliding shaft of the switch by supporting the sealing rod.

6. The valve core structure as described in claim 1, characterized in that... The inlet uses a separate inlet element, which is snapped into the valve core body and presses against the fixed sealing seat. A first sealing ring is provided between the rear end of the inlet element and the fixed sealing seat to seal the inlet element, the fixed sealing seat and the valve core body. A second sealing ring is provided at the rear of the fixed sealing seat to seal the fixed sealing seat and the valve core body. The outlet is located between the first sealing ring and the second sealing ring.

7. The valve core structure as described in claim 1, characterized in that... The mounting base of the push-button switch is threadedly connected to the rear end of the valve core body cylinder. The front end of the sliding shaft of the push-button switch is snapped into the snap-fit ​​seat at the rear of the sealing rod. During assembly, pressing down the sliding shaft will snap the sliding shaft and the sealing rod together.

8. The valve core structure as described in claim 1, characterized in that... The valve core structure is the same as that of an angle valve.

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