Jet flow valve element and valve body capable of preventing clamping stagnation

Abstract

The utility model discloses an anti-clamping stagnation jet flow valve element which comprises a valve element shell, a valve element, a valve element and a valve element, one end of the nozzle is slidably arranged in the guide groove, the other end of the nozzle is provided with a spout, a first sealing ring is arranged between the outer wall of the nozzle and the guide groove, a through groove is formed in the nozzle, internal threads are arranged on the inner wall of the through groove, a cold water inlet is further formed in the nozzle, and the spout and the cold water inlet are both communicated with the through groove; the spray needle is arranged in the through groove, one end of the spray needle is close to the nozzle, the other end of the spray needle extends out of the valve element shell to form a rotating part, external threads matched with the internal threads are arranged on the outer surface of the spray needle, and the spray needle rotates to drive the nozzle to axially slide so that the cold water flow can be adjusted. The first sealing ring is arranged on the nozzle, so that a sealing structure is formed between the nozzle and the valve element shell, sand and the like are prevented from entering a gap between the nozzle and the valve element shell to cause a clamping stagnation phenomenon, and the integrated spraying needle which is integrally cast is adopted, so that the jet flow effect is better, the structure is more accurate, and the service life of the valve element is longer.

Description

Technical Field

[0001] The utility model relates to the field of water mixing valves, and more specifically, to an anti-stuck jet valve core and a valve body used for mixing cold and hot water in a solar water heater. Background Art

[0002] At present, solar water heaters have been widely recognized by the society and have been widely used. In water heaters, ejectors are often used to adjust the mixing ratio of cold and hot water to achieve the effect of jet pressurization and water temperature regulation.

[0003] The existing jet valve core with the publication number CN103775668B adopts the Venturi principle jet booster to increase the hot water flow rate, but has the following problems in actual use: First, due to the presence of fine sand or impurities in tap water, the sand is easily stored in the gap between the nozzle and the valve core housing through the water flow, causing the valve core to rotate unsmoothly or get stuck; Second, the spray needle and the rotating part in this invention adopt a separate structure, and there is a problem of machining accuracy, which causes the spray needle and the rotating part to be not coaxial. When the rotating part rotates, the spray needle will produce an offset rotation, affecting the cold water closing sealing and the cold water opening jet effect. The machining is difficult and costly, and the spray needle and the nozzle are threaded. When the cold water is turned off, friction will occur when the spray needle contacts the nozzle, and the spray needle is easy to loosen.

[0004] Therefore, the utility model provides an anti-stuck jet valve core to solve the above problems. Summary of the invention

[0005] One purpose of the utility model is to provide an anti-stuck jet valve core and valve body, cold water enters the through groove of the nozzle through the cold water inlet, the rotation of the spray needle drives the nozzle to move axially, so that the nozzle of the nozzle is away from the spray needle, and cold water is sprayed out from the spray mouth, a first sealing ring is arranged between the nozzle and the valve core housing to prevent sand or impurities in the cold water from entering the gap between the nozzle and the valve core housing to cause a jam, the one-piece spray needle casts the spray needle and the rotating part as a whole, so that the spray needle and the rotating part move synchronously and coaxially, the jet effect is better, the service life of the valve core is longer, and the structure is more precise.

[0006] In order to achieve these purposes and other advantages of the utility model, the utility model provides an anti-stuck jet valve core, including: a valve core housing, which is provided with a guide groove; a nozzle, one end of which is slidably arranged in the guide groove, and the other end is provided with a nozzle, a first sealing ring is provided between the outer wall of the nozzle and the guide groove, a through groove is provided inside the nozzle, and the inner wall of the through groove is provided with an internal thread, and a cold water inlet is also provided on the nozzle, and the nozzle and the cold water inlet are both connected with the through groove; a spray needle, which is arranged in the through groove, one end of the spray needle is close to the nozzle, and the other end extends to the outside of the valve core housing to form a rotating part, the outer surface of the spray needle is provided with an external thread matched with the internal thread, the diameter of the part of the spray needle located inside the through groove is slightly smaller than the inner diameter of the through groove, and the rotation of the spray needle can drive the nozzle to slide axially so that the nozzle is away from the spray needle to adjust the water output.

[0007] Furthermore, an annular groove is provided on the outer wall of the nozzle between the nozzle and the cold water inlet, and a second sealing ring is provided in the annular groove.

[0008] Furthermore, the cold water inlet is arranged in the middle of the nozzle, and a plurality of cold water inlets are evenly distributed on the nozzle in a circumferential manner.

[0009] Furthermore, a cold water flow groove is provided on the nozzle between the annular groove and the sliding part of the nozzle. The cold water flow groove is arranged around the nozzle, and the cold water inlet is distributed at the bottom of the cold water flow groove.

[0010] Furthermore, one end of the spray needle inserted into the nozzle is a cylinder, the end of the cylinder is a cone, the curved surface of the cone can fit tightly with the edge of the nozzle, and the sliding of the nozzle can drive the nozzle closer to or away from the cone to adjust the water outlet cross-section.

[0011] Furthermore, the outer edge of the nozzle is provided with a conical slope.

[0012] Furthermore, the spray needle is connected to the valve core housing via a clamping ring, and a third sealing ring and a friction ring are provided on the contact surface between the spray needle and the valve core housing.

[0013] The utility model also provides a valve body matched with the anti-stuck jet valve core.

[0014] Furthermore, the valve body is provided with a cold water channel, a hot water channel and a water outlet, the edge of the water outlet is provided with a sealing slope adapted to the conical slope, the jet valve core is arranged in the valve body, the nozzle is provided with one end of the nozzle inserted into the water outlet, the annular groove on the nozzle separates the hot water channel from the cold water channel, the cold water flow groove is connected to the cold water channel, and the hot water channel is connected to the water outlet on the outside of the nozzle.

[0015] Furthermore, a fourth sealing ring is provided at the junction of the valve body and the valve core housing.

[0016] The utility model at least includes the following beneficial effects: a first sealing ring is provided on the nozzle of the utility model, so that a sealing structure is formed between the nozzle and the valve core housing, and cold water directly enters the nozzle through the cold water inlet, so as to prevent sand or impurities from entering the gap between the nozzle and the valve core housing and causing a jamming phenomenon, and the utility model adopts an integrally cast one-piece spray needle, which has a better jet effect, a more precise structure, a longer valve core life, and can use a plastic mold structure with low cost.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the anti-stuck jet valve core of the utility model;

[0019] Figure 2 It is a cross-sectional structural diagram of the anti-stuck jet valve core and the valve body of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the anti-stuck jet valve core nozzle of the utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the anti-stuck jet valve core spray needle of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0023] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0024] like Figures 1 to 4As shown, an embodiment of the present application provides an anti-stuck jet valve core, including: a valve core housing 1, which is a housing with a hexagonal cross-section, and of course, it can also be a quadrilateral, pentagon or other polygonal shape; a guide groove with a hexagonal cross-section is opened through the interior of the valve core housing 1; a nozzle 2, which is a quasi-cylindrical housing, one end of the nozzle 2 is slidably arranged in the guide groove, and the other end is provided with a nozzle, and optionally, the nozzle can be circular or square, etc.; the cross-sectional shape of the portion of the nozzle arranged in the guide groove is a hexagonal shape matching the guide groove, a first sealing ring 7 is provided on the outer wall of the portion where the nozzle 2 contacts the guide groove, a through groove is provided in the nozzle 2, and a circular cold water inlet 6 is also provided on the portion of the nozzle 2 located outside the guide groove, and the nozzle and the cold water inlet 6 are both connected to the through groove; a spray needle 3, which is a quasi-cylindrical body, and the bottom end of the spray needle 3 is connected to the nozzle 2, and the nozzle 2 is connected to the nozzle 2. Near the nozzle 2, the bottom end of the spray needle 3 can be inserted into the nozzle and fit tightly with the edge of the nozzle or move away from the nozzle to form a water outlet channel between the spray needle 3 and the nozzle. The upper end of the spray needle 3 passes through the nozzle 2 and the valve core housing 1, and extends out of the top of the valve core housing 1 to form a rotating part 301. The inner wall of the through groove of the nozzle 2 is surrounded by an internal thread, and the outer wall of the spray needle 3 in contact with the through groove is provided with an external thread 302 that matches the internal thread of the through groove. The diameter of the remaining part below the part of the spray needle 3 where the external thread 302 is provided is smaller than the inner diameter of the through groove, so as to reserve a limited space between the through groove and the through groove to accommodate cold water; the valve core housing 1 and the spray needle 3 are fixed in position, and the spray needle 3 is rotated by the rotating part 301. The internal and external threads cooperate with each other to make the nozzle 2 slide up and down along the axial direction, so that the nozzle of the nozzle 2 is away from or close to the bottom end of the spray needle 3, thereby controlling the flow rate of cold water flowing out of the nozzle.

[0025] The jet valve core is installed on the valve body 12, and cold water enters the through groove from the cold water inlet 6 on the nozzle 2. At this time, the bottom end of the spray needle 3 is inserted into the nozzle, and the spray needle 3 is in close contact with the edge of the nozzle, and the cold water cannot flow out. The rotating part 301 on the spray needle 3 is rotated. Under the cooperation of the internal and external threads, the nozzle 2 slides downward along the axial direction, and the nozzle of the nozzle 2 gradually moves away from the bottom end of the spray needle 3. The cold water flows out from the gap between the nozzle and the bottom end of the spray needle 3. The rotating part 301 of the spray needle 3 is continued to be rotated. The gap between the nozzle and the bottom end of the spray needle 3 increases, and the cold water flow rate increases. When the part of the nozzle 2 that contacts the valve core housing 1 slides to the lowest end of the guide groove, the cold water flow rate reaches the maximum. The first sealing ring 7 is provided to form a sealing structure between the nozzle 2 and the valve core housing 1. Cold water directly enters the nozzle 2 through the cold water inlet 6 to prevent sand or impurities from entering the gap between the nozzle 2 and the valve core housing 1 and causing a jam. In addition, the spray needle 3 and the rotating part 301 are integrally cast into an integrated spray needle 3, which has a better jet effect, a more precise structure and a longer valve core life.

[0026] In other embodiments, an annular groove 4 is provided on the outer wall between the cold water inlet 6 and the nozzle below the nozzle 2, the annular groove 4 is protruding and surroundingly provided on the outer wall of the nozzle 2, a second sealing ring 5 is provided in the annular groove 4, and the annular groove 4 and the second sealing ring 5 are hexagonal in shape. When the jet valve core is installed on the valve body 12, the cold water channel 13 on the valve body 12 is connected with the cold water inlet 6, the diameter of the annular groove 4 is consistent with the diameter of the groove in which the valve core is installed in the valve body 12, and the sealing ring in the annular groove 4 fits tightly with the valve body 12, so that the cold water can only enter the through groove of the nozzle 2 through the cold water inlet 6 and will not flow to other positions. The setting of the annular groove 4 and the second sealing ring 5 seals and isolates the water channel in the valve body 12 into two parts, so that the water flow in the two parts of the channel can flow separately, and the hexagonal setting of the annular groove 4 and the second sealing ring 5 makes the compression amount of each side equal after the sealing ring is installed, and the compression is more uniform.

[0027] In other embodiments, the cold water inlet 6 is arranged below the contact surface between the nozzle 2 and the valve core housing 1, and the number of the cold water inlet 6 is four or more, etc., which are evenly distributed around the nozzle 2. When the jet valve core is installed on the valve body 12, it is not necessary to align the cold water channel 13 in the valve body 12 with the cold water inlet, and cold water can enter the nozzle 2 through the cold water inlet 6. Multiple cold water inlets 6 are evenly arranged on the nozzle 2 in a circumferential manner, so that no matter which direction the nozzle 2 is installed, it does not affect the cold water inlet, and cold water can enter the inside of the nozzle 2 through the cold water inlet hole.

[0028] In other embodiments, the nozzle 2 is further provided with a cold water flow groove 15, which is arranged between the sliding portion of the nozzle 2 and the annular groove 4 and is arranged around the outer wall of the nozzle 2. The cold water flow groove 15 extends toward the inside of the nozzle 2, and the cold water inlet is arranged around the bottom of the cold water flow groove 15 in a circular shape. When the jet valve core is installed on the valve body 12, the outer wall of the valve core housing 1 and the annular groove 4 on the nozzle 2 are in contact with the valve body 12, and the cold water flow groove 15 forms a limited space in the valve body 12. The cold water channel 13 of the valve body 12 is connected to the cold water inlet 6 of the nozzle 2. Cold water can fill the cold water flow groove 15 and enter the nozzle 2 through the cold water inlet 6. When the rotating portion 301 of the spray needle 3 is rotated, as shown in FIG. Figure 2 As shown, the nozzle 2 moves downward, and during the movement, cold water can enter the cold water flow channel 15, and the water inlet cross section increases, and the cold water enters the through groove through the cold water inlet 6 in the cold water flow channel 15. By providing a cold water flow channel 15 that is smaller than the outer diameter of the nozzle 2, the cold water inlet area can be increased when the nozzle 2 moves downward, thereby increasing the cold water flow rate.

[0029] In other embodiments, the end of the bottom of the spray needle 3 near the nozzle is cylindrical, and the end inserted into the nozzle is a cone 303, and the maximum diameter of the cone 303 is greater than the maximum diameter of the cylinder, and the curved surface of the cone 303 can fit tightly with the edge of the nozzle to restrict the circulation of cold water. When the jet valve core is installed, the cone 303 fits tightly with the nozzle in the initial state, and cold water cannot flow out of the nozzle. The spray needle 3 is rotated, and the nozzle of the nozzle 2 gradually moves downward, the distance between the cone 303 and the nozzle increases, and cold water flows out of the nozzle. The spray needle continues to be rotated, and the flow rate of cold water gradually increases. The maximum diameter of the cone 303 at the end of the spray needle 3 is greater than the diameter of the cylinder, which can increase the contact area between the spray needle 3 and the nozzle and prevent the spray needle 3 from being stuck in the nozzle.

[0030] In other embodiments, a conical slope is provided on the outer edge of the nozzle. After the jet valve core is installed on the valve body 12, the spray needle 3 is rotated and cold water flows out of the nozzle. When the spray needle 3 is rotated to the maximum extent and the nozzle 2 moves to the lowest end, the conical slope on the outer edge of the nozzle can fit tightly with the edge of the water outlet of the valve body 12, so that the water outlet of the valve body 12 only discharges cold water, so that the cold water flow rate reaches the maximum.

[0031] In other embodiments, the upper part of the spray needle 3 penetrates the valve core housing 1 and extends to the outside of the valve core housing 1, and a clamping ring 10 is provided between the rotating part 301 of the spray needle 3 and the valve core housing 1, and the clamping ring 10 connects the spray needle 3 and the valve core housing 1 together, and two third sealing rings 9 are provided on the contact surface between the spray needle 3 and the valve core housing 1, and a friction ring 8 is also provided between the corner of the spray needle 3 and the corner of the valve core housing 1. During the use of the valve core, the provision of the third sealing ring 9 can prevent water from overflowing from between the valve core housing 1 and the spray needle 3, and the provision of the friction ring 8 can prevent the frequent rotation of the spray needle 3 from causing component wear, thereby extending the service life of the valve core.

[0032] The embodiment of the present application also provides a valve body 12 for matching the anti-stuck jet valve core of the above embodiment. Figure 2As shown, a cold water channel 13 is provided on the right side of the valve body 12, a hot water channel 14 is provided on the left side, and a water outlet 16 is provided at the bottom. The edge of the water outlet 16 is a sealing slope, and the sealing slope is adapted to the conical slope on the outer side of the nozzle 2. When the nozzle 2 slides downward to the bottom, the conical slope can fit tightly with the sealing slope. One end of the jet valve core with a nozzle is inserted into the valve body 12, and the nozzle of the nozzle 2 is located axially above the water outlet 16. The annular groove 4 on the nozzle 2 separates the hot water channel 14 from the cold water channel 13. The cold water channel 13 is connected to the cold water trough 15 above the valve body 12, and the hot water channel 14 is connected to the vicinity of the water outlet 16 below. After the jet valve core is installed in the valve body 12, when the nozzle 2 moves up to the nozzle and contacts the spray needle 3, the cold water is turned off, and the faucet is only hot water at this time; when the nozzle 2 moves down to the conical slope of the nozzle and contacts the sealing slope of the edge of the water outlet 16 of the valve body 12, the hot water is turned off, and the cold water enters the nozzle 2 from the four water inlet holes in the middle of the nozzle 2, and then ejects from the nozzle at the bottom of the nozzle 2, and only cold water is discharged at this time; when the integrated spray needle 3 is rotated until the cold water flows out of the nozzle and the nozzle edge of the nozzle 2 does not contact the edge of the water outlet 16, the cold water enters the nozzle 2 from the four water inlet holes in the middle of the nozzle 2, and then ejects from the spray hole at the bottom of the nozzle 2, and the high-speed cold water jet generates negative pressure around the spray outlet according to the Venturi principle, sucks hot water to increase the hot water flow, and then the cold water and hot water are mixed by the valve body 12 and the mixed water flows out from the water outlet 16. The valve body 12 and the jet valve core work together to conveniently control the temperature of the water flowing out of the water outlet 16.

[0033] In other embodiments, a fourth sealing ring 11 is further provided at the junction of the valve core housing 1 and the valve body 12. After the jet valve core is installed on the valve body 12, the fourth sealing ring 11 further increases the airtightness of the entire device to prevent water from overflowing.

[0034] The number of devices and processing scales described here are used to simplify the description of the utility model. The application, modification and variation of the anti-stuck jet valve core of the utility model are obvious to those skilled in the art.

[0035] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Anti-stuck jet valve core, characterized in that: include: A valve core housing, wherein a guide groove is provided inside the valve core housing; A nozzle, one end of which is slidably arranged in the guide groove, and the other end is provided with a nozzle, a first sealing ring is provided between the outer wall of the nozzle and the guide groove, a through groove is provided inside the nozzle, and an internal thread is provided on the inner wall of the through groove, and a cold water inlet is also provided on the nozzle, and the nozzle and the cold water inlet are both connected to the through groove; A spray needle is arranged in the through groove, one end of the spray needle is close to the nozzle, and the other end extends to the outside of the valve core housing to form a rotating part. The outer surface of the spray needle is provided with an external thread that matches the internal thread. The diameter of the part of the spray needle located inside the through groove is slightly smaller than the inner diameter of the through groove. The rotation of the spray needle can drive the nozzle to slide axially so that the nozzle is close to or away from the spray needle to adjust the water output.

2. The anti-stuck jet valve core according to claim 1, characterized in that: An annular groove is arranged on the outer wall of the nozzle between the nozzle and the cold water inlet, and a second sealing ring is arranged in the annular groove.

3. The anti-stuck jet valve core according to claim 1, characterized in that: The cold water inlet is arranged in the middle of the nozzle, and a plurality of cold water inlets are evenly distributed on the nozzle in a circumferential manner.

4. The anti-stuck jet valve core according to claim 2, characterized in that: A cold water flow groove is also provided on the nozzle between the annular groove and the external thread of the nozzle. The cold water flow groove is arranged around the nozzle, and the cold water inlet is distributed at the bottom of the cold water flow groove.

5. The anti-stuck jet valve core according to claim 1, characterized in that: The end of the spray needle inserted into the nozzle is a cylinder, the end of the cylinder is a cone, the curved surface of the cone can fit tightly with the edge of the nozzle, and the sliding of the nozzle can drive the nozzle to move closer to or away from the cone to adjust the water outlet cross section.

6. The anti-stuck jet valve core according to claim 1, characterized in that: The outer edge of the nozzle is provided with a conical slope.

7. The anti-stuck jet valve core according to claim 1, characterized in that: The spray needle is connected to the valve core housing through a clamping ring, and a third sealing ring and a friction ring are provided on the contact surface between the spray needle and the valve core housing.

8. A valve body, characterized in that: Matching the anti-stuck jet valve core described in any one of claims 1 to 7.

9. The valve body according to claim 8, characterized in that The valve body is provided with a cold water channel, a hot water channel and a water outlet. The edge of the water outlet is provided with a sealing slope adapted to the conical slope. The jet valve core is arranged in the valve body. The nozzle is provided with an end of the nozzle inserted into the water outlet. The annular groove on the nozzle separates the hot water channel from the cold water channel. The cold water trough is connected to the cold water channel. The hot water channel is connected to the water outlet on the outside of the nozzle.

10. The valve body according to claim 8, characterized in that A fourth sealing ring is provided at the junction of the valve body and the valve core housing.

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