Valve element structure and soft water valve

Abstract

The valve element structure comprises a pull rod, a piston body and a Venturi tube, the pull rod is connected with the piston body, the piston body is provided with an inner cavity, and the Venturi tube is arranged in the inner cavity; the piston body is provided with a first water inlet, a salt suction port and a water outlet, and the Venturi tube is provided with a water inlet hole, a suction port and a water outlet hole; the water inlet hole is communicated with the first water inlet, the suction inlet is communicated with the salt suction port, and the water outlet hole is communicated with the water outlet. When the pull rod moves back and forth, the Venturi tube moves along with the piston body, when the piston body moves to the channel and is in a salt suction state, the salt suction port can suck salt water, and the salt water is sequentially sucked from the salt suction port and the suction port to be mixed at the moment; and when the piston body moves to separate the Venturi tube from the salt suction water injection nozzle, salt suction is stopped, and a water replenishing state is switched. By optimizing the flow channel path of the saline water in the salt absorption process, unstable factors caused by a complex flow path are reduced, the valve element can rapidly and accurately adjust the flow of the saline water, and the stability of the performance of the water softener is improved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, and more specifically, to a valve core and a soft water valve. Background Technology

[0002] The softening valve is the core component of a water softener, controlling its operation, backwashing, brine regeneration, and water replenishment modes. Switching between these modes is primarily achieved by controlling the valve core's movement to open or close the water path. During brine regeneration, the brine in the brine tank is diverted to the resin tank to regenerate the resin and restore its water softening ability. In brine absorption mode, the concentration of the absorbed brine needs to be controlled; therefore, the brine in the brine tank is first mixed with tap water before being diverted to the resin tank. Existing softening valves use a separate mixing channel, with the valve core only controlling the flow direction and on / off state. This results in a complex internal flow channel design and requires a high degree of coordination between the valve core and the mixing channel, making it prone to over- or under-absorption of brine, which can negatively impact the softener's performance. Utility Model Content

[0003] The purpose of this utility model is to provide a valve core structure and a soft water valve that integrates the water mixing function into the valve core.

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

[0005] A valve core structure includes a pull rod, a piston body, and a venturi tube. The pull rod is connected to the piston body, the piston body has an inner cavity, and the venturi tube is disposed in the inner cavity. The piston body is provided with a first water inlet, a brine suction port, and a water outlet. The venturi tube has a water inlet hole, a suction port, and a water outlet hole. The water inlet hole communicates with the first water inlet, the suction port communicates with the brine suction port, and the water outlet hole communicates with the water outlet hole.

[0006] In one embodiment, the outer wall of the venturi tube is provided with a plurality of annular grooves, and a first sealing element is embedded in the annular grooves, the first sealing element causing the venturi tube to seal against the inner wall of the inner cavity.

[0007] In one embodiment, the venturi tube is provided with a limiting part, and the inner wall of the piston body is provided with a stepped surface, wherein the limiting part abuts against the stepped surface.

[0008] In one embodiment, the pull rod is provided with a protrusion, the piston body is provided with a limiting groove, and the protrusion is engaged in the limiting groove.

[0009] In one embodiment, the pull rod includes a connected push-pull portion and an end cap portion. The end cap portion has a cavity, and a portion of the venturi tube is inserted into the cavity. The stepped surface faces the end cap portion, and a portion of the end cap portion is inserted into the inner cavity so that the end cap portion abuts against the limiting portion.

[0010] In one embodiment, the piston body is provided with a second seal, a third seal and a fourth seal, the end cap is provided with a fifth seal, the first water inlet is located between the fourth seal and the fifth seal, the brine suction port is located between the third seal and the fourth seal, and the water outlet is located between the second seal and the third seal.

[0011] In one embodiment, the salt inlet is positioned directly opposite the suction inlet.

[0012] In one embodiment, the end cap is provided with a second water inlet, and the first water inlet and the second water inlet are positioned opposite each other.

[0013] In one embodiment, the push-pull portion is provided with a plurality of grooves.

[0014] This utility model also provides a soft water valve, including a valve body and the valve core structure described above. The valve body is provided with a brine suction channel and a brine suction nozzle. The valve core is disposed in the brine suction channel, and the brine suction nozzle is connected to the brine suction channel.

[0015] Compared with existing technologies, the valve core structure of this utility model has the following advantages: By embedding the Venturi tube inside the piston body, and opening a brine inlet and a water outlet on the piston body, the brine inlet and the intake inlet are connected. When the lever moves back and forth, the Venturi tube moves together with the piston body. When the piston body moves to the brine intake state, the brine inlet can draw in brine. At this time, the brine is drawn in sequentially from the brine inlet and the intake inlet, and the mixed brine flows out from the water outlet. When the piston body moves to disconnect the Venturi tube from the brine inlet, the brine intake stops and the system switches to water replenishment state. This design optimizes the flow path of the brine during the brine intake process, reduces instability factors caused by complex flow paths, and allows the valve core to quickly and accurately adjust the brine flow rate, improving the stability of the water softener's performance. Correspondingly, there is no need to set up a separate mixing channel inside the valve body, making the entire water softener valve structure more compact and smaller in size. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. The following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the valve core structure according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the valve core according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the soft water valve structure according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the soft water valve in the brine suction state according to an embodiment of this utility model;

[0021] Figure 5 This is a cross-sectional view of the soft water valve in the water replenishment state according to an embodiment of this utility model.

[0022] The diagram indicates the following: 100, valve core; 11, pull rod; 111, push-pull part; 1111, groove; 112, end cap; 1121, protrusion; 1122, cavity; 1123, fifth seal; 1124, second inlet; 12, piston body; 121, first inlet; 122, brine inlet; 123, outlet; 124, stepped surface; 125, second seal; 126, third seal; 127, fourth seal; 13, venturi tube; 131, first cylinder; 1311, inlet hole; 132, second cylinder; 1321, outlet hole; 133, suction inlet; 134, annular groove; 135, first seal; 136, limiting part; 200, valve body; 21, brine suction channel; 22, brine suction nozzle; 23, raw water channel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] In the description of this utility model, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Please seeFigures 1-5 This embodiment provides a valve core structure 100 including a pull rod 11, a piston body 12, and a venturi tube 13. The pull rod 11 is connected to the piston body 12, so that pulling the pull rod 11 can drive the piston body 12 to move. The piston body 12 is used to switch the water flow direction of the valve body. The piston body 12 has an inner cavity, and the venturi tube 13 is disposed in the inner cavity. When the piston body 12 moves, the venturi tube 13 moves with the piston body 12. The piston body 12 is provided with a first water inlet 121, a brine suction port 122, and a water outlet 123. The venturi tube 13 is provided with a water inlet hole 1311, a suction port 133, and a water outlet hole 1321. The water inlet hole 1311 communicates with the first water inlet 121, the suction port 133 communicates with the brine suction port 122, and the water outlet hole 1321 communicates with the water outlet 123. In this embodiment, the valve core 100 is installed in the channel of the soft water valve body 200. The soft water valve is installed on the resin tank. By pulling the lever 11, the entire valve core 100 can be moved, thereby controlling the water path switching in the channel and realizing the switching of various working states of the soft water valve.

[0026] To enable communication between the soft water valve and the brine tank, a brine suction nozzle 22 is provided on the valve body 200. The brine suction nozzle 22 is connected to the brine tank via a connecting water pipe. In this embodiment, when the valve core 100 moves to put the soft water valve into the brine suction state, the brine suction port 122 on the piston body 12 is connected to the brine suction nozzle on the valve body 200. Salt water is sequentially drawn in from the brine suction port 122 and the suction port 133. Tap water flows in from the first inlet port 121 and then flows out through the inlet hole 1311 to mix with the drawn-in salt water. The mixed salt water flows out from the outlet port 123 and then flows out into the resin tank. When the valve core 300 moves to the water softener valve's replenishment state, the brine suction port 122 on the piston body 12 is disconnected from the brine suction nozzle 22. At this time, brine cannot be drawn in through the brine suction port 122. Tap water inside the valve body 100 enters the venturi tube 13 through the inlet hole 1311, flows out through the brine suction port 122 on the piston body 12, and finally flows into the brine tank through the brine suction nozzle 22 on the channel. Through this structural design, the mixing function is integrated into the valve core 100. Mixing and flow channel opening / closing can be synchronized simply by controlling the movement of the pull rod 11. This also optimizes the brine flow path during the brine suction process, reducing instability caused by complex flow paths, thereby enabling rapid and precise adjustment of the brine flow rate and improving the stability of the water softener's performance. Correspondingly, the valve body 200, which matches the valve core 100 in this embodiment, does not require a separate mixing channel, allowing for a more compact water softener valve structure and a smaller overall size.

[0027] For details, please refer to Figure 2The Venturi tube 13 includes a first cylinder 131 and a second cylinder 132. The first cylinder 131 has an inlet hole 1311, and the second cylinder 132 has an outlet hole 1321. An inlet 133 is formed at the connection between the first and second cylinders 131 and 132. The diameter of the inlet hole 1311 gradually decreases towards the connection, while the diameter of the outlet hole 1321 gradually increases away from the connection. The brine inlet 122 and the inlet 133 are directly opposite each other, shortening the flow path of the brine during absorption and reducing resistance. This allows for better synchronous cutting off of the brine mixture when the piston 12 moves to switch between water replenishment and other states, achieving more precise control over the brine intake.

[0028] Please refer to the following: Figures 1-2 The pull rod 11 has a protrusion 1121, and the piston body 12 has a limiting groove (not shown in the figure). The protrusion 1121 is engaged in the limiting groove, thus allowing the pull rod 11 and the piston body 12 to be detachably connected, facilitating the installation of the venturi tube 13 and the maintenance of the valve core 100. The outer wall of the venturi tube 13 has several annular grooves 134, and a first sealing element 135 is embedded in the annular grooves 134. The first sealing element 135 seals the venturi tube 13 with the inner wall of the inner cavity, thereby limiting the venturi tube 13 in the inner cavity of the piston body 12 and preventing movement. Specifically, the first cylinder 131 and the second cylinder 132 are both provided with annular grooves 134, and correspondingly, the first cylinder 131 and the second cylinder 132 are both provided with first sealing elements 135, so that both ends of the entire venturi tube 13 are sealed with the inner cavity of the piston body 12. In this embodiment, when installing the valve core 100, the venturi tube 13 is first installed in the inner cavity of the piston body 12, so that the suction port 133 of the venturi tube 13 is aligned with the salt suction port 122, and then the piston body 12 and the pull rod 11 are assembled.

[0029] More specifically, the venturi tube 13 is also provided with a limiting part 136, and the inner wall of the piston body 12 is provided with a stepped surface 124. The limiting part 136 abuts against the stepped surface 124, thereby more stably confining the venturi tube 13 within the inner cavity of the piston body 12. In this embodiment, the limiting part 136 is located at the end of the first cylinder 131. When the inner cavity of the venturi tube 13 is within the inner cavity of the piston body 12, the limiting part 136 is confined by the stepped surface 124, preventing the venturi tube 13 from moving due to water flow impact.

[0030] In this embodiment, the pull rod 11 includes a connected push-pull portion 111 and an end cap portion 112. The end cap portion 112 has a cavity 1122, in which a portion of the Venturi tube 13 is inserted. The stepped surface 124 faces the end cap portion 112, and the end cap portion 112 is partially inserted into the inner cavity of the piston body 12, so that the end cap portion 112 abuts against the limiting portion 136, thereby better fixing the Venturi tube 13 in the inner cavity of the piston body 12 and preventing the Venturi tube 13 from moving when the water flow velocity is too high. Specifically, the limiting portion 136 is provided on the first cylinder 131, and the first cylinder 131 is partially inserted into the cavity 1122 of the end cap portion 112. Through the cooperation of the end cap portion 112 and the stepped surface 124, the Venturi tube 13 is more securely limited and locked in the inner cavity of the piston body 12.

[0031] The end cap 112 is also provided with a second water inlet 1124. The first water inlet 121 and the second water inlet 1124 are directly opposite each other. When the pull rod 11 is assembled with the piston body 12, since part of the end cap 112 is inserted into the piston body 12, by setting the first water inlet 121 and the second water inlet 1124 directly opposite each other, the space at the connection between the end cap 112 and the piston body 12 is fully utilized, which can shorten the length of the entire pull rod 11 and shorten the overall length of the valve core 100. In this embodiment, the limiting groove is connected to the second water inlet 1124. When assembling the valve core 100, the installation difficulty is reduced by slowly sliding the protrusion 1121 from the second water inlet 1124 into the limiting groove. Since the valve core 100 is installed in the channel of the valve body 100, in order to reduce the resistance encountered by the valve core 100 during movement, in the structure of the valve core 100 in this embodiment, the push-pull part 111 is provided with a number of grooves 1111, so that the resistance encountered by the push-pull part 111 on the inner wall of the channel is reduced during the reciprocating motion, and the entire valve core 100 moves more smoothly.

[0032] Please refer to the following: Figures 1-5 , Figure 4 This is a cross-sectional view of the soft water valve including the valve core 100 in the brine flushing state in this embodiment; Figure 5This is a cross-sectional view of the soft water valve, including the valve core 100, in the water replenishment state in this embodiment. The piston body 12 is provided with a second seal 125, a third seal 126, and a fourth seal 127. The end cap 112 is provided with a fifth seal 1123. The first inlet 121 is located between the fourth seal 127 and the fifth seal 1123, the brine suction port 122 is located between the third seal 126 and the fourth seal 127, and the outlet 123 is located between the second seal 125 and the third seal 126. When the valve core 100 is installed in the channel of the valve body 200, the piston body 12 reciprocates linearly within the channel. When the soft water valve is in the brine suction state, the piston body 12 moves to the position where the brine suction port 122 and the brine injection nozzle 22 are connected. At this time, the third seal 126 and the fourth seal 127 seal with the channel, ensuring that brine is sequentially drawn in from the brine suction port 122 and the suction port 133, thereby controlling the brine flow path. When the soft water valve is in the water replenishment state, the piston body 12 moves to the brine suction port 122 and the brine suction water injection nozzle 22 are separated, and the suction port 133 cannot suck in brine. At this time, the second seal 125 and the fourth seal 127 are sealed with the channel, and the tap water can only flow in sequentially from the first water inlet 121, accelerate through the water inlet hole 1311 and flow out from the water outlet hole 1321, and finally flow out from the brine suction port 123, and then flow into the brine tank through the brine suction water injection nozzle 22.

[0033] It should be noted that, in the brine-suction state, the third seal 126 can either seal with the channel or not seal with it, as long as the outlet 123 and the brine-suction nozzle 22 are connected. Preferably, the third seal 126 seals with the channel, and the third seal 126 is located on the side of the brine-suction nozzle 22 adjacent to the pull rod 11.

[0034] Please see Figures 3-5This embodiment also provides a soft water valve, including a valve body 200 and a valve core 100 structure as described in this embodiment. The valve body 100 is provided with a brine suction channel 21 and a brine suction water inlet 22. The valve core 100 is disposed in the brine suction channel 21, which is connected to the brine suction water inlet 22. The brine suction water inlet 22 is connected to a brine tank through a pipe, allowing brine from the brine tank to be input into the valve body 100 through the brine suction water inlet 22, and also allowing water to be injected into the brine tank through the brine suction water inlet 22. The valve body 100 has a valve cavity and a raw water channel 23, which is connected to the valve cavity. Tap water enters the valve cavity through the raw water channel 23, and the valve core 100 controls whether the tap water enters other channels. The brine suction channel 21 is connected to the valve chamber. By controlling the reciprocating motion of the valve core 100, the direction of water flow in the brine suction channel 21 is switched, including the connection and disconnection between the raw water channel 23 and the brine suction channel 21, and whether the brine suction port 122 can suck salt. When the valve core 100 moves to the point where the brine suction port 122 is directly opposite the brine suction water injection nozzle 22, the brine suction port 122 can suck salt, and the raw water channel 23 is connected to the brine suction channel 21. When the valve core 100 continues to move, causing the brine suction port 122 to move away from the brine suction water injection nozzle 22, the brine cannot be sucked in due to the large distance between the suction port 133 and the brine suction water injection nozzle 22; instead, the tap water in the valve chamber enters the inner cavity of the piston body 12 through the first inlet 121, then flows through the venturi tube 13 and out. At this time, the outlet 123 is only connected to the brine suction nozzle 22, realizing the injection of water into the brine tank.

[0035] It should be noted that in this embodiment of the soft water valve, the valve core 100 can be moved as a whole simply by pulling the lever 11. The lever 11 can be moved manually or electrically, and the specific implementation method is not limited.

[0036] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. The protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A valve core structure, characterized in that, The device includes a pull rod, a piston body, and a venturi tube. The pull rod is connected to the piston body, which has an inner cavity, and the venturi tube is disposed in the inner cavity. The piston body is provided with a first water inlet, a brine suction port, and a water outlet. The venturi tube has a water inlet hole, a suction port, and a water outlet hole. The water inlet hole communicates with the first water inlet, the suction port communicates with the brine suction port, and the water outlet hole communicates with the water outlet hole.

2. The valve core structure according to claim 1, characterized in that, The outer wall of the venturi tube is provided with several annular grooves, and a first sealing element is embedded in the annular grooves. The first sealing element makes the venturi tube seal against the inner wall of the inner cavity.

3. The valve core structure according to claim 2, characterized in that, The venturi tube is provided with a limiting part, and the inner wall of the piston body is provided with a stepped surface, and the limiting part abuts and cooperates with the stepped surface.

4. The valve core structure according to any one of claims 1-3, characterized in that, The pull rod is provided with a protrusion, and the piston body is provided with a limiting groove, and the protrusion is engaged in the limiting groove.

5. The valve core structure according to claim 3, characterized in that, The pull rod includes a push-pull part and an end cap part connected together. The end cap part has a cavity. The venturi tube part is inserted into the cavity. The stepped surface faces the end cap part. The end cap part is inserted into the inner cavity so that the end cap part abuts against the limiting part.

6. The valve core structure according to claim 5, characterized in that, The piston body is provided with a second seal, a third seal and a fourth seal, the end cap is provided with a fifth seal, the first water inlet is located between the fourth seal and the fifth seal, the brine suction port is located between the third seal and the fourth seal, and the water outlet is located between the second seal and the third seal.

7. The valve core structure according to claim 6, characterized in that, The salt inlet is directly opposite the suction inlet.

8. The valve core structure according to claim 5, characterized in that, The end cap is provided with a second water inlet, and the first water inlet and the second water inlet are directly opposite each other.

9. The valve core structure according to claim 5, characterized in that, The push-pull part is provided with several grooves.

10. A soft water valve, characterized in that, The device includes a valve body and a valve core structure as described in any one of claims 1-9. The valve body is provided with a salt suction channel and a salt suction water injection nozzle. The valve core is disposed in the salt suction channel, and the salt suction water injection nozzle is connected to the salt suction channel.

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