Adjustable jet flow water mixing valve

Abstract

The adjustable jet flow water mixing valve is characterized in that a spray needle is arranged in a spray nozzle, a cold water inflow space and a cold water jet flow outlet are formed between the spray needle and the spray nozzle, a hot water inflow space is formed between the spray nozzle and a valve body, a cold water inlet is communicated with a cold water opening and the cold water inflow space, and a hot water outlet is communicated with a hot water opening. During use, the handle is firstly lifted upwards to drive the spray needle to move in the axis direction to open the cold water jet outlet, then the handle is rotated to drive the inner square hole rotating gland and the grooved wheel sleeve to rotate, then the nozzle is driven to move in the axial direction, and the cold water jet outlet is opened. And the cold water inflow space, the hot water inflow space and the cold water jet flow outlet are adjusted, and simple operation and a good jet effect are achieved.

Description

Technical Field

[0001] The invention relates to a jet liquid mixer, to the field of valves, and in particular to a novel water mixing valve. Background Art

[0002] Existing water mixing valves mainly include manual water mixing valves and thermostatic water mixing valves.

[0003] Manual temperature control valves usually use a spiral lifting valve core. The rotation of the handle is converted into a linear displacement of the valve core through a spiral mechanism, thereby achieving temperature regulation. The structural form and action principle of this valve determine that its operation is relatively intuitive and simple, and it is suitable for occasions where the temperature control requirements are not very high or manual adjustment is required. The purchase and use of manual temperature control valves are mainly based on factors such as its material, brand, and whether it meets specific installation requirements. A manual water mixing valve is a valve that mixes cold and hot water. In fact, the valve itself cannot mix, but it is connected to the cold and hot water pipes to play a mixing role.

[0004] Thermostatic mixing valves are mainly related to supporting products of heating systems and are widely used in electric water heaters, solar water heaters and central hot water supply systems. The mixing valve adjusts the water temperature by adjusting the ratio of cold and hot water to ensure that the outlet water temperature is constant and is not affected by changes in water temperature, flow rate and water pressure. This technology solves the problem of hot and cold water temperature in the bathing center, and automatically shuts off the hot water when the cold water is interrupted, playing a safety protection role. The working principle of the mixing valve is based on installing a thermistor at the mixed water outlet, using the characteristics of the temperature sensing element to push the valve core in the valve body to move, blocking or opening the cold and hot water inlets. When a certain temperature is set, the mixing valve can keep the outlet water temperature stable regardless of how the cold and hot water inlet temperature and pressure change. This technology not only improves the comfort of use, but also saves energy and water and extends the life of the water heater. However, the manufacturing cost of the thermostatic mixing valve is high, there are some problems with the adjustment accuracy, it is difficult to guarantee accuracy and stability, the service life is also short, and the maintenance cost is high.

[0005] Chinese patent document CN103769320 A discloses an adjustable jet shower device, which belongs to a jet mixer in a solar water heater water supply system and has a jet booster structure. However, the jet mixer disclosed in the document requires turning on the cold water switch first, waiting for a period of time before turning on the hot water switch, and finally adjusting the nozzle through a separate adjustment knob to adjust the water mixing ratio. The operation is relatively cumbersome and has a certain learning cost. If the operation sequence is wrong, the expected booster jet effect cannot be achieved.

[0006] From the above discussion, it can be seen that how to improve the water mixing valve to make it have a lower operating cost, especially using one operating member to realize the switching and adjustment of the entire device, is a technical problem that has not been solved in the prior art. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to provide a jet water mixing valve in which one operating member can complete the switching and adjustment of the entire device.

[0008] To this end, the present invention provides an adjustable jet mixing valve, comprising

[0009] The water mixing valve body has a cold water port, a hot water port, a cold water inlet, a hot water inlet and a mixed water outlet. The cold water port and the hot water port are connected to the cold water pipe and the hot water pipe respectively.

[0010] The valve core of an adjustable jet water mixing valve comprises a lifting rod, an inner square hole rotating gland, a groove wheel sleeve gland, a groove wheel sleeve, a nozzle and a spray needle. A cold water pane and a hot water pane are provided on the groove wheel sleeve, which are respectively connected with the cold water inlet and the hot water inlet. The nozzle and the spray needle are arranged in the groove wheel sleeve, and the spray needle is arranged in the nozzle. A cold water space and a cold water jet outlet are formed between the nozzle and the spray needle, a hot water space is formed between the nozzle and the groove wheel sleeve, and a hot water suction outlet is formed between the nozzle and the nozzle. The cold water inlet is respectively connected with the cold water outlet and the cold water space, and the hot water inlet is respectively connected with the hot water outlet and the hot water space. The position of the spray needle in the axial direction of the nozzle is adjustable, the position of the nozzle in the axial direction of the groove wheel sleeve is adjustable, and the groove wheel sleeve is fixed in the axial direction of the valve core of the adjustable jet water mixing valve. The cold water space, the hot water space, the cold water jet outlet and the hot water suction outlet are adjusted by adjusting the relative positions of the nozzle and the spray needle on the axial direction of the groove wheel sleeve.

[0011] The nozzle needle is connected to the lifting rod through a thread, and moves axially in the nozzle following the lifting rod. The lifting rod is composed of a square rod section and a cylindrical section.

[0012] The sheave sleeve gland has features such as a hexagonal guide groove, a rotatably connected cylindrical channel groove, an anti-rotation flat notch and a circular hole boss. The sheave sleeve gland is matched with the valve body through the anti-rotation flat notch, and there is no relative rotation along the axis of the valve body. The hexagonal guide rail on the nozzle is matched with the hexagonal guide groove on the sheave sleeve gland, so that the hexagonal guide rail moves in the axial direction of the hexagonal guide rail, limiting the relative rotation of the nozzle along the axis of the valve body.

[0013] The cylindrical boss on the nozzle cooperates with the cam notch on the grooved wheel sleeve. When the grooved wheel sleeve is rotated, the nozzle moves in the direction of its axis. The grooved wheel sleeve passes through the rotary connection cylindrical channel groove on the grooved wheel sleeve gland through its rotary connection cylinder to cooperate with the rotary connection hole on the inner square hole rotating gland. The square hole on the top surface of the inner square hole rotating gland cooperates with the square rod section of the lifting rod. When the lifting rod is rotated, the inner square hole rotating gland and the grooved wheel sleeve rotate accordingly. One end of the spherical gland is a spherical surface, and the other end is a pipe thread. The pipe thread of the spherical gland cooperates with the pipe thread hole on the top of the valve body and presses the grooved wheel sleeve gland at the same time. There is a certain gap between the end face of the boss in the hole of the spherical gland and the rotating gland to prevent self-locking.

[0014] The groove wheel sleeve is provided with a cold water pane and a hot water pane, and the distance between the solid part of the cold water pane and the hot water pane should be greater than the axial moving distance of the nozzle. The axial length of the cold water pane and the hot water pane should be slightly greater than the axial length of the cold water inlet and the hot water inlet.

[0015] The cold water jet outlet and the hot water suction outlet of the adjustable jet mixing valve core are connected, the throat is connected to the small end of the throat expansion area, and the large end of the throat expansion area is connected to a standard shower hose.

[0016] The expansion angle of the throat expansion zone is a continuous expansion.

[0017] The inner diameter of the throat is in the range of 5-14 mm, and the length of the throat is in the range of 5-8 times of the inner diameter.

[0018] An expansion angle of 5-10° is formed between the inner wall of the throat expansion zone and the extension line of the inner wall, and the outlet diameter of the throat expansion zone is 1.5-4 times its inlet diameter.

[0019] The nozzle has a nozzle cone, and the small mouth end of the nozzle cone is the cold water jet outlet.

[0020] The spray needle comprises a spray needle body and a spray needle cone tip arranged at the end of the spray needle body.

[0021] The cone angle of the nozzle cone is not less than the cone angle of the needle cone tip.

[0022] The cone angle range of the needle cone tip is 20-90°, and the cone angle range of the nozzle cone is 30-100°.

[0023] The spray needle body is provided with ribs as supports along the circumference, and the ribs cooperate with the inner wall of the nozzle to prevent the spray needle from shaking under the impact of the cold water inflow, and a fluid channel is formed between adjacent ribs.

[0024] A plurality of convex ribs are evenly distributed around the circumference of the spray needle body and extend along the axial direction thereof, and the plurality of convex ribs form the fluid channel between each other.

[0025] The convex rib includes a first portion and a second portion, wherein a radial dimension of the first portion is smaller than a radial dimension of the second portion, and an outer surface of the second portion cooperates with an inner cavity of the nozzle.

[0026] The total cross-sectional area of ​​the fluid channel formed between the convex ribs is larger than the cross-sectional area of ​​the cold water jet outlet during spraying.

[0027] When the nozzle moves along the axial direction, the water pressure at the cold water notch of the nozzle is always consistent with the water pressure at the cold water inlet of the valve body.

[0028] The length of the first portion is not less than the sum of the length of the nozzle cold water slot of the nozzle in the axial direction of the nozzle needle and the axial relative stroke of the nozzle and the nozzle needle.

[0029] The throat gland comprises two parts of pipe threads, one part is connected with the valve body, and the other part is a standard pipe thread interface of a bath hose, which is connected with the bath hose. The throat is pressed by the throat gland and installed on the valve body.

[0030] The adjustable jet mixing valve provided by the present invention has the following technical effects:

[0031] The present invention provides an adjustable jet mixing water valve, wherein the spray needle is arranged in the nozzle, a cold water inlet space and a cold water jet outlet are formed between the spray needle and the nozzle, and a hot water inlet space is formed between the nozzle and the spray needle, the cold water inlet is communicated with the cold water outlet and the cold water inlet space respectively, and the hot water inlet is communicated with the hot water outlet and the hot water inlet space respectively. When in use, the handle is first pulled upward to drive the spray needle to move along the axial direction to open the cold water inlet, and then the handle is rotated to drive the inner square hole rotating cover and the groove wheel sleeve to rotate, and drive the nozzle to move axially to achieve the adjustment of the cold water inlet space, the hot water inlet space and the cold water jet outlet. Specifically, when the nozzle moves, the cross-section of the cold water space becomes smaller, and the cross-section of the hot water space becomes larger, thereby achieving the adjustment of the mixed water temperature with a relatively simple operation. More importantly, when the cross-section of the cold water space becomes smaller, the cross-sectional area of ​​the cold water jet outlet also becomes smaller, thereby ensuring that when the proportion of cold water is small, the inside of the nozzle still maintains a high water pressure, and has a better spraying effect. Therefore, the present invention realizes relatively simple operation and better spraying effect.

[0032] An adjustable jet water mixing valve provided by the present invention also includes an inner square hole rotating pressure cover arranged on the valve body, and the inner square hole rotating pressure cover is connected to the groove wheel sleeve to realize simultaneous rotation; the nozzle is limited in rotation by cooperating with the hexagonal guide groove of the groove wheel sleeve pressure cover through a hexagonal guide rail, and the cam slot of the groove wheel sleeve is matched with the cylindrical boss of the nozzle. When in use, it is only necessary to rotate the handle to drive the groove wheel sleeve to rotate. When the groove wheel sleeve rotates, the cylindrical boss of the nozzle moves along the cam slot of the groove wheel sleeve. Because the rotation of the nozzle is restricted, under the action of the above-mentioned cam slot, the nozzle realizes axial movement, and then the cold water space, hot water space and cold water jet outlet are adjusted by the nozzle, thereby realizing a relatively simple adjustment operation.

[0033] The present invention provides an adjustable jet water mixing valve, wherein the spray needle is connected to the lifting rod through a thread, the cylindrical section of the lifting rod is located in the circular hole boss of the groove wheel sleeve pressure cover, and the square section of the lifting rod is connected to the handle through the square hole of the inner square hole rotating pressure cover. When the handle rotates, the lifting rod rotates with it, and because the lifting rod passes through the square hole and the inner square hole rotating pressure cover, the rotation of the lifting rod also drives the rotation of the inner square hole rotating pressure cover.

[0034] The present invention provides an adjustable jet water mixing valve, wherein the groove wheel sleeve is in the valve body, and the rotating connecting cylinder of the groove wheel sleeve passes through the rotating connecting cylindrical channel groove of the groove wheel sleeve pressure cover and is connected with the rotating connecting hole of the inner square hole rotating pressure cover. When the inner square hole rotating pressure cover rotates with the lifting rod, the groove wheel sleeve is driven to rotate, and the rotating connecting cylinder moves in the rotating connecting cylindrical channel groove, and will not drive the groove wheel sleeve pressure cover to rotate.

[0035] The present invention provides an adjustable jet water mixing valve, wherein the front end of the valve body along the cold water spraying direction is connected, and the throat is connected to the small mouth end of the throat expansion area. When the cold water is sprayed out from the cold water jet outlet along the front end of the spray needle, since the cold water jet outlet has the smallest cross section in the entire flow channel, the pressure loss before this is the smallest, so the cold water jet outlet can fully convert the cold water pressure into the water outlet speed, so that the cold water sprayed from the cold water jet outlet has a good speed. At this time, the part where the throat is connected to the hot water space will form a negative pressure around the cold water due to the high-speed spray and suction of the cold water, thereby sucking in the hot water. The setting of the throat ensures that the sucked hot water and cold water are fully mixed and fully transfer energy. The inner diameter size range of the throat is: 5-14mm, and the length of the throat is within the range of 5-8 times its inner diameter size. The function of the throat expansion zone is to reduce the flow rate of the water outlet and convert the kinetic energy of the mixed water at the outlet into pressure energy. The outer wall of the throat expansion zone and the extension line of the inner wall form an expansion angle of 5-15°. The expansion angle is a continuous expansion, which ensures that the speed is gradually converted into pressure and has a better use effect. The diameter ratio of the water outlet to the water inlet of the throat expansion zone is 1.5-4.

[0036] The present invention provides an adjustable jet water mixing valve, wherein a cold water pane and a hot water pane are provided on the groove wheel sleeve, the cold water pane is connected to the cold water inlet and the cold water notch of the nozzle on the nozzle, and the hot water pane is connected to the hot water inlet and the hot water space. A sealing ring groove is provided on the nozzle for installing a sealing ring, and the sealing ring cooperates with the inner wall of the valve body to separate the hot water pane and the cold water pane, thereby separating the cold water space from the hot water space. The spray needle is provided in the nozzle, and the spray needle cooperates with the inner wall of the nozzle through its convex ribs. A plurality of convex ribs are uniformly distributed around the spray needle body and extend along its axial direction, and the plurality of convex ribs form the fluid channel between each other. The convex ribs include a first part and a second part, wherein the radial dimension of the first part is smaller than the radial dimension of the second part, and the outer surface of the second part cooperates with the inner cavity of the nozzle. The radial dimension of the first part is smaller than the radial dimension of the second part. The first part corresponds to the inlet of the nozzle, and its radial size is smaller than that of the second part in order to form a water passage on the inner wall of the nozzle, and to evenly introduce the water at the nozzle inlet into the fluid channel formed by the convex ribs, thereby ensuring that the cross-sectional area of ​​the fluid channel is larger than the cross-sectional area of ​​the cold water jet outlet of the nozzle, ensuring that the cold water pressure will not be lost before the cold water jet outlet of the nozzle, and the jet effect is better.

[0037] The present invention provides an adjustable jet mixing valve, which is used for a spray needle of a valve core, and a spray needle body thereof is provided with convex ribs in the circumference thereof, so that when the spray needle is assembled in the nozzle of the valve core, the outer surface of the convex ribs will cooperate with the inner cavity of the nozzle to limit the spray needle body, and a flow channel is formed between the convex ribs, so that when the pressure of the fluid passing through the nozzle is relatively large or very large, and the flow rate of the fluid is unstable, under the premise of not affecting the smooth flow of the fluid, it can effectively prevent the spray needle from deviating from the cold water jet outlet of the nozzle or swinging radially due to the large and uneven radial pressure in the radial direction, thereby affecting the spray effect of the nozzle.

[0038] The present invention provides an adjustable jet mixing valve, which is used for a spray needle of a valve core, and has a plurality of convex ribs uniformly distributed around the circumference of the spray needle body and extending along its axial direction. A fluid channel is formed between the plurality of convex ribs, thereby facilitating the flow of the fluid. Furthermore, each convex rib includes a first convex rib portion and a second convex rib portion, and the radial dimension of the first convex rib portion is smaller than the radial dimension of the second convex rib portion, thereby being able to further enhance the spray effect of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to make the content of the invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings, wherein:

[0040] Figure 1 A schematic diagram showing the three-dimensional structure of the water mixing valve body, handle, spherical gland and throat of Example 1;

[0041] Figure 2 A cross-sectional view showing the structure of Example 1;

[0042] Figure 3 A schematic diagram showing the structure of the valve core formed by the cooperation of the spray needle, the nozzle and the rotating part of the present invention;

[0043] Figure 4 A schematic diagram showing the matching structure of the valve core and the throat pipe of the present invention;

[0044] Figure 5 A schematic diagram showing the three-dimensional structure of the sheave sleeve gland, the sheave sleeve and the lifting rod in cooperation with each other according to the present invention;

[0045] Figure 6 A schematic diagram showing the structure of a sheave sleeve gland of the present invention;

[0046] Figure 7 A schematic diagram showing the structure of the nozzle of the present invention;

[0047] Figure 8 A schematic diagram showing the structure of the spray needle of the present invention;

[0048] Fig. 9 A schematic diagram showing the structure of a sheave sleeve of the present invention;

[0049] Fig.10 A schematic diagram showing the three-dimensional structure of the valve core and the throat pipe of the present invention;

[0050] Fig.11 A schematic diagram showing the exploded structure of the valve core of the present invention when it is unfolded along the axis.

[0051] Description of reference numerals:

[0052] A-mixing valve body; A1-cold water inlet; A2-hot water inlet; A3-cold water inlet; A4-hot water inlet; A5-hot water space; A6-cold water space; A7-mixing water outlet; A8-hot water suction outlet; A9-cold water jet outlet; B-valve core; B1-anti-rotation flat notch; B2-cold water window pane; B3-hot water window pane; 1-valve body; 2-groove sleeve; 21-rotating connection cylinder; 22-cam notch; 3-groove sleeve gland; 31-round hole boss; 32-hexagonal guide groove; 33-rotating Rotating connecting cylindrical channel groove; 4-nozzle; 41-hexagonal guide groove; 42-nozzle cold water groove; 43-cylindrical boss; 44-nozzle cone; 5-throat gland; 6-spray needle; 61-convex rib; 61a-convex rib first part; 61b-convex rib second part; 62-fluid channel; 63-spray needle cone tip; 7-throat; 71-throat expansion area; 8-lifting rod; 81-square rod section; 82-cylindrical section; 9-inner square hole rotating gland; 91-rotating connecting hole; 10-spherical gland; 11-handle. DETAILED DESCRIPTION

[0053] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0054] Example 1

[0055] like Figure 2 and Figure 4As shown, the present invention provides an adjustable jet water mixing valve, including a water mixing valve body A and a valve core B, a throat pipe 7 and a throat pipe gland 5, wherein the water mixing valve body A has a cold water port A1, a hot water port A2, a cold water inlet A3, a hot water inlet A4 and a mixed water outlet A7. The cold water port A1 and the hot water port A2 are connected to the cold water pipe and the hot water pipe respectively. The water mixing valve core B has a cold water pane B2 and a hot water pane B3, wherein the cold water pane B2 is connected to the cold water inlet A3, and the hot water pane B3 is connected to the hot water inlet A4. After the cold water inlet A3 passes through the cold water pane B2, a cold water space A6 is formed in the valve core B, and after the hot water inlet A4 passes through the hot water pane B3, a hot water space A5 is formed in the valve core B. The hot water space A5 forms a hot water suction outlet A8 between the nozzle cone 44 and the throat 7, and the cold water space A6 forms a cold water jet outlet A9 between the needle cone tip 63 and the nozzle mouth. The size of the hot water suction outlet A8 and the cold water jet outlet A9 is changed by adjusting the position of the needle 6 and the nozzle 4 in the axial direction to adjust the mixing ratio of the hot and cold water. The throat 7 is connected to a standard shower hose.

[0056] In this embodiment, the cold water jet outlet A9 is adjusted by pulling the handle 11, and the hot water suction outlet A8 is adjusted by rotating the handle 11.

[0057] like Figure 3 As shown, the spray needle 6 is connected to the lifting rod 8 through a thread, and the lifting rod 8 is connected to the handle 11. When the handle 11 is pulled, the spray needle 6 moves axially, thereby opening the cold water jet outlet A9 and changing the size of the cold water jet outlet A9. When the handle 11 is rotated, the lifting rod 8 rotates with the handle 11, and the square rod section 81 on the lifting rod 8 cooperates with the inner square hole of the inner square hole rotating cover 9, driving the inner square hole rotating cover 9 to rotate, and the rotating connection hole 91 on the inner square hole rotating cover 9 cooperates with the rotating connection cylinder 21 on the grooved wheel sleeve 2, so that the grooved wheel sleeve 2 rotates with the handle 11. A cam notch 22 is opened on the grooved wheel sleeve 2, which cooperates with the cylindrical boss 43 on the nozzle 4. When the grooved wheel sleeve 2 rotates with the handle 11, the cylindrical boss 43 on the nozzle 4 moves in the cam notch 22 of the grooved wheel sleeve 2. The nozzle 4 cooperates with the hexagonal guide groove 32 of the groove wheel sleeve cover 3 through the hexagonal guide rail 41 to limit the rotation of the nozzle 4 around the axis, so that when the groove wheel sleeve 2 rotates, the nozzle 4 follows the rise angle of the cam groove 22 of the groove wheel sleeve 2 to move along the axis, thereby opening the hot water suction outlet A8 and changing the size of the hot water suction outlet A8 and the cold water jet outlet A9.

[0058] like Figure 3 and 5As shown, the valve core B of the jet water mixing valve comprises a sheave sleeve 2, a nozzle 4, a spray needle 6, a sheave sleeve gland 3, an inner square hole rotating gland 9 and a lifting rod 8. The sheave sleeve gland 3 has a hexagonal guide groove 32, which cooperates with the nozzle 4 to limit the rotation of the nozzle 4. The sheave sleeve gland 3 is provided with a rotating cylindrical channel groove 33, and an anti-rotation flat notch B1 is provided on the edge. The sheave sleeve gland 3 is installed in the valve body 1. Due to the anti-rotation flat notch B1, the sheave sleeve gland 3 will not rotate around its own axis. The rotating connection cylinder 21 of the sheave sleeve 2 passes through the rotating connection cylindrical channel groove 33 and cooperates with the rotating connection hole 91 of the inner square hole rotating gland 9. Due to the existence of the channel groove, the rotation of the sheave sleeve 2 will not affect the sheave sleeve gland 3.

[0059] like Figure 3 and 10 As shown, a cold water pane B2 and a hot water pane B3 are provided on the sheave sleeve 2. On the inner side of the sheave sleeve 2, a seal on the nozzle 4 separates the cold water pane B2 and the hot water pane B3. In order to ensure that the cold water pane B2 and the hot water pane B3 are not connected during the movement of the nozzle 4, the axial distance between the cold water pane B2 and the hot water pane B3 needs to be greater than the axial movement distance of the nozzle 4.

[0060] like Figure 3 and 8 As shown, the spray needle 6 is installed inside the nozzle 4, and the convex rib 61 and the seal are used as a support to prevent the spray needle 6 from shaking inside the nozzle 4. The convex rib 61 extends along the axial direction of the nozzle body 4, and the convex rib has a first part 61a and a second part 61b. The radial diameter of the first part 61a is smaller than the radial diameter of the second part 61b, and a fluid channel 62 is formed between adjacent convex ribs 61. The axial length of the second part 61b is smaller than the axial length of the first part 61a. The axial length of the first part 61a is the sum of the length of the cold water slot 42 of the nozzle 4 in the axial direction of the spray needle 6 and the axial stroke of the nozzle 4.

[0061] In order to ensure a better spraying effect, the total cross-sectional area of ​​the fluid channel 62 is larger than the cross-sectional area of ​​the cold water jet outlet A9 of the nozzle 4 during spraying.

[0062] like Figure 7As shown, the nozzle 4 includes a cylindrical body with an inner cavity, a cold water notch 42 for cold water to flow into is opened on the side wall of the cylindrical body, and a hexagonal guide rail 41 with an inner cavity is directly formed on a section of the cylindrical body. When the nozzle 4 is installed in the sheave sleeve gland 3, the edge of the hexagonal guide rail 41 is clamped in the hexagonal guide groove 32 on the inner wall of the sheave sleeve gland 3, so that the nozzle 4 cannot rotate relative to the sheave sleeve gland 3. A nozzle cone 44 is formed at the other end of the cylindrical body, and the cone angle range of the nozzle cone 44 is 90°. The inner cavity of the nozzle 4 is also a conical inner cavity in this section of the cone part, and its cone angle range is 60°. The cone angle of the inner cavity cone part of the nozzle 4 is always smaller than the cone angle of the cone part of the nozzle 4 body.

[0063] The caliber of the cold water jet outlet A9 can vary within 3-10 mm, preferably within the range of 4-6 mm. The caliber of the cold water jet outlet A9 should be the same as the diameter of the cone side cylinder of the spray needle 6, and the cold water jet outlet A9 matches the cone side cylinder of the spray needle 6.

[0064] like Figure 2 As shown, the adjustable jet water mixing valve further comprises a throat pipe 7 installed on the valve body 1 along the cold water jet direction, and the throat pipe 7 is at a certain distance from the cold water jet outlet A9, which is less than the distance that the nozzle 4 moves on the axis of the sheave sleeve 2. The end of the throat pipe 7 is formed with a tapered portion, and the tapered portion is suitable for matching with the nozzle cone 44, that is, the cross-sectional area formed by the nozzle 4 and the tapered portion of the throat pipe 7 is larger than the inner hole cross-sectional area of ​​the throat pipe 7, and the large mouth of the tapered portion faces the nozzle cone 44, and the throat pipe 7 is further connected with the throat expansion area 71, and the inner diameter of the throat expansion area 71 is continuously increased with the root of the throat pipe 7 and the end of the water mixing port, the inner diameter of the throat pipe 7 is 10 mm, the length of the throat pipe 7 is 8 times its inner diameter, and the inner wall of the throat expansion area 71 and the extension line of the inner wall of the throat pipe 7 form an expansion angle of 8°, and the outlet diameter of the throat expansion area 71 is 1.5 times its inlet diameter.

[0065] like Figure 4 As shown, the function of the throat expansion area 71 described in this embodiment is to convert part of the kinetic energy of the mixed water at the outlet of the throat 7 into pressure energy. There is diffusion loss in the energy conversion process, and the amount of diffusion loss is related to the distribution of the inlet flow velocity of the throat expansion area 71, the size of the diffusion angle and the diffusion cross-sectional diameter ratio. As a preferred embodiment of this embodiment, the diffusion angle β is 5-8°, but not limited to 5-8°; in order to further reduce the diffusion loss, a segmented diffusion pipe section can also be used in this embodiment, wherein the diffusion angle is preferably β=2°, 4°, 13°, and the diffusion angle β can also be selected to be 1°, 3°, 12° or other multiple angles for use.

[0066] During installation, the lifting rod 8 is connected to the spray needle 6 by threading, and inserted into the inner cavity of the nozzle 4; the groove wheel sleeve 2 is downwardly sleeved on the outside of the nozzle 4 along the axis, and it is noted that the end notch of the cam groove 22 is aligned with the cylindrical boss 43 of the nozzle 4, and it is moved downward until the cylindrical boss 43 of the nozzle 4 contacts the cam groove 22 and slides into the cam groove 22; then, the hexagonal guide groove 32 of the groove wheel sleeve gland 3 is aligned with the hexagonal guide rail of the nozzle 4 41 is installed so that the hexagonal guide rail 41 is inserted into the hexagonal guide groove 32. At the same time, it is noted that the rotating connection cylinder 21 of the groove wheel sleeve 2 should pass through the rotating connection cylinder channel groove 33 on the groove wheel sleeve pressure cover 3; then the inner square hole rotating pressure cover 9 is installed, and the square rod section 81 of the lifting rod 8 is first passed through the square hole of the inner square hole rotating pressure cover 9, and then the rotating connection hole 91 on the inner square hole rotating pressure cover 9 is aligned with the rotating connection cylinder 21 of the groove wheel sleeve 2, and the installation is completed by inserting; thereby forming Figure 3 The valve core B shown. The installed valve core B is inserted into the valve body 1, and the anti-rotation flat notch B1 of the groove wheel sleeve gland 3 is aligned with the notch in the valve body 1 for installation, so that the valve core B cannot rotate relative to the valve body 1; the spherical gland 10 is installed with the valve body 1 through threads, and the lower end face of the spherical gland 10 presses the groove wheel sleeve gland 3 to limit its movement along the axis; the handle 11 is installed on the lifting rod 8, and the two are connected by a pin; finally, the throat pipe 7 is installed, and the throat pipe gland 5 is installed with the valve body 1 through threads, and the upper end face of the throat pipe gland 5 presses the throat pipe 7 to limit the axial movement of the throat pipe 7.

[0067] like Figure 2 and Figure 4 As shown, the valve body 1 has a cold water port A1 and a hot water port A2 for connecting cold water and hot water respectively, the cold water inlet A3 on the valve body 1 is connected with the cold water window pane B2 on the groove wheel sleeve 2, and then the cold water slot 42 on the nozzle 4 enters the inner cavity of the nozzle 4, and the spray needle 6 in the inner cavity of the nozzle 4 has a fluid channel 62 formed between the convex ribs 61, and the cold water reaches the cold water space A6 formed by the nozzle 4 and the spray needle 6 through the fluid channel 62 on the spray needle 6, and finally enters the throat 7 through the cold water jet outlet A9; the hot water inlet A4 on the valve body 1 is connected with the hot water window pane B3 on the groove wheel sleeve 2, and then the hot water enters the hot water space A5 formed by the nozzle 4, the valve body 1 and the throat 7, and enters the throat 7 through the hot water suction outlet A8 to mix with the cold water.

[0068] When in use, first pull the handle 11 upward to drive the lifting rod 8 to move axially. Since the lifting rod 8 is connected to the spray needle 6 by a thread, the spray needle 6 moves axially with the lifting rod 8 to open the cold water jet outlet A9, realize the connection between the cold water space A6 and the cold water jet outlet A9, and realize the jet of cold water; then rotate the handle 11, because the square rod section 81 of the lifting rod 8 cooperates with the inner square hole of the inner square hole rotating cover 9, the rotation of the lifting rod 8 drives the inner square hole rotating cover 9 to rotate together, and because the rotating connection hole 91 of the inner square hole rotating cover 9 cooperates with the rotating connection cylinder 21 of the grooved wheel sleeve 2, the grooved wheel sleeve 2 also rotates together, and the grooved wheel sleeve cover 3 is stuck in the valve body 1 through the anti-rotation flat notch B1. Because the hexagonal guide rail 41 on the nozzle 4 matches the hexagonal guide groove 32 of the groove wheel sleeve gland 3, the rotation of the nozzle 4 around the axis is restricted; the cylindrical boss 43 on the nozzle 4 is installed in the cam groove of the groove wheel sleeve 2. When the groove wheel sleeve 2 rotates, the cylindrical boss 43 on the nozzle 4 moves with the groove wheel. Because the rotation of the nozzle 4 around the axis is restricted, when the groove wheel sleeve 2 rotates, the nozzle 4 moves in the axial direction accordingly; when the nozzle 4 moves upward, the hot water suction outlet A8 opens, and the hot water space A5 and the hot water suction outlet A8 are connected. When cold water is ejected, the speed at the cold water jet outlet A9 is high and the pressure is low, and the hot water is sucked out to increase the pressure of the hot water. The up and down movement of the nozzle 4 changes the cross-sectional area of ​​the cold water jet outlet A9 and the hot water suction outlet A8, and the mixing ratio of hot water and cold water is adjusted. In this process, the water pressure of the cold water notch 42 on the nozzle 4 always corresponds to the cold water inlet of the valve body 1, thereby ensuring that the water pressure at the cold water notch 42 is always equivalent to the water pressure at the cold water inlet A3 and the cold water outlet A1.

[0069] It should be noted that the cold water notch 42 on the nozzle 4 corresponds to the cold water inlet A3 of the valve body 1, which means that during the entire process of the axial movement of the nozzle 4, the water pressure at the cold water notch 42 of the nozzle 4 always corresponds to the water pressure at the cold water inlet A3 of the valve body 1, that is, the cold water notch 42 of the nozzle 4 always has a water pressure that ensures a good spraying effect. In order to achieve this technical effect, during the axial movement of the nozzle 4, the cold water notch 42 of the nozzle 4 must always be located within the range of the cold water inlet A3 of the valve body 1, or the cold water inlet A3 of the valve body 1 must always be located within the range of the cold water notch 42 of the nozzle 4.

Claims

1. An adjustable jet water mixing valve, comprising: The water mixing valve body (A) has a cold water port (A1), a hot water port (A2), a cold water inlet (A3), a hot water inlet (A4) and a water mixing outlet (A7). The cold water port (A1) and the hot water port (A2) are connected to a cold water pipe and a hot water pipe respectively. The adjustable jet water mixing valve core (B) has a lifting rod (8), an inner square hole rotating cover (9), a groove wheel sleeve cover (3), a groove wheel sleeve (2), a nozzle (4) and a spray needle (6). A cold water window pane (B2) and a hot water window pane (B3) are provided on the groove wheel sleeve (2), which are connected to the cold water inlet (A3) and the hot water inlet (A4) respectively. The nozzle (4) and the spray needle (6) are arranged in the groove wheel sleeve (2), and the spray needle (6) is arranged in the nozzle (4). A cold water space (A6) and a cold water jet outlet (A9) are formed between the nozzle (4) and the spray needle (6), a hot water space (A5) is formed between the nozzle (4) and the groove wheel sleeve (2), and a hot water suction outlet (A8) is formed between the nozzle (4) and the throat (7). The cold water inlet (A3) is respectively connected to the cold water port (A1) and the cold water space (A6), and the hot water inlet (A4) is respectively connected to the hot water port (A2) and the hot water space (A5). The position of the spray needle (6) in the axial direction of the nozzle (4) is adjustable, the position of the nozzle (4) in the axial direction of the grooved wheel sleeve (2) is adjustable, and the grooved wheel sleeve (2) is fixed in the axial direction of the valve core (B) of the adjustable jet water mixing valve. By adjusting the relative positions of the nozzle (4) and the spray needle (6) on the axial direction of the grooved wheel sleeve (2), the cold water space (A6), the hot water space (A5), the cold water jet outlet (A9) and the hot water suction outlet (A8) are adjusted.

2. The adjustable jet mixing valve according to claim 1, characterized in that: The spray needle (6) is connected to the lifting rod (8) through a thread, and moves axially in the nozzle (4) following the lifting rod (8). The lifting rod (8) is composed of a square rod section (81) and a cylindrical section (82). The groove wheel sleeve pressure cover (3) has the following features: a hexagonal guide groove (32), a rotatably connected cylindrical channel groove (33), an anti-rotation flat notch (B1) and a round hole boss (31). The groove wheel sleeve pressure cover (3) cooperates with the valve body (1) through the anti-rotation flat notch (B1), and there is no relative rotation along the axis of the valve body (1). The hexagonal guide rail (41) on the nozzle (4) cooperates with the hexagonal guide groove (32) on the groove wheel sleeve pressure cover (3), so that the hexagonal guide rail (41) moves in the axial direction of the hexagonal guide rail (41), thereby limiting the relative rotation of the nozzle (4) along the axis of the valve body (1).

3. The adjustable jet mixing valve according to claim 2, characterized in that: The cylindrical boss (43) on the nozzle (4) cooperates with the cam notch (22) on the grooved wheel sleeve (2), and when the grooved wheel sleeve (2) is rotated, the nozzle (4) moves in the axial direction thereof. The grooved wheel sleeve (2) passes through the rotary connection cylindrical channel groove (33) on the grooved wheel sleeve pressure cover (3) through its rotary connection cylinder (21) and cooperates with the rotary connection hole (91) on the inner square hole rotating pressure cover (9), and the square hole on the top surface of the inner square hole rotating pressure cover (9) cooperates with the square rod section (81) of the lifting rod (8). When the lifting rod (8) is rotated, the inner square hole rotating pressure cover (9) and the grooved wheel sleeve (2) rotate accordingly.

4. The adjustable jet mixing valve according to claim 3, characterized in that: One end of the spherical gland (10) is a spherical surface, and the other end is a pipe thread. The pipe thread of the spherical gland (10) matches the pipe thread hole at the top of the valve body (1), and presses the grooved wheel sleeve gland (3). There is a certain gap between the end surface of the boss in the hole of the spherical gland (10) and the inner square hole rotating gland (9) to prevent self-locking.

5. The adjustable jet mixing valve according to claim 4, characterized in that: The grooved wheel sleeve (2) is provided with a cold water pane (B2) and a hot water pane (B3), and the distance between the solid parts of the cold water pane (B2) and the hot water pane (B3) should be greater than the axial movement distance of the nozzle (4). The axial lengths of the cold water pane (B2) and the hot water pane (B3) should be slightly greater than the axial lengths of the cold water inlet (A3) and the hot water inlet (A4). The cold water jet outlet (A9) and the hot water suction outlet (A8) of the valve core (B) of the adjustable jet mixing valve are connected to the throat (7), the throat (7) is connected to the small end of the throat expansion area (71), and the large end of the throat expansion area (71) is connected to a standard shower hose.

6. The adjustable jet mixing valve according to claim 5, characterized in that: The nozzle (4) has a nozzle cone (44), and the small end of the nozzle cone (44) is the cold water jet outlet (A9). The spray needle (6) has a spray needle body and a spray needle cone tip (63) arranged at the end of the spray needle body. The cone angle of the nozzle cone (44) is not less than the cone angle of the spray needle cone tip (63). The cone angle range of the spray needle cone tip (63) is 20-90°, and the cone angle range of the nozzle cone (44) is: 30-100°.

7. The jet mixing valve according to claim 6, characterized in that: The main body of the spray needle (6) is provided with convex ribs (61) as a support body along the circumference, and the convex ribs (61) cooperate with the inner wall of the nozzle (4) to prevent the spray needle (6) from shaking under the impact of the cold water inflow, and a fluid channel (62) is formed between adjacent convex ribs (61). The total cross-sectional area of ​​the fluid channel (62) formed between the convex ribs (61) is larger than the cross-sectional area of ​​the cold water jet outlet (A9) during spraying.

8. The jet mixing valve according to claim 7, characterized in that: The convex rib (61) comprises a first portion (61a) and a second portion (61b), wherein the radial dimension of the first portion (61a) is smaller than the radial dimension of the second portion (61b), and the outer surface of the second portion (61b) cooperates with the inner cavity of the nozzle (4). The length of the first portion (61a) is not less than the sum of the length of the nozzle cold water slot (42) of the nozzle (4) in the axial direction of the spray needle (6) and the axial relative stroke of the nozzle (4) and the spray needle (6).

9. The jet mixing valve according to claim 8, characterized in that: When the nozzle (4) moves along the axial direction, the water pressure at the nozzle cold water notch (42) of the nozzle (4) is always consistent with the water pressure at the cold water inlet (A3) of the valve body (1).

10. The jet mixing valve according to claim 9, characterized in that: The throat gland (5) comprises two parts of pipe threads, one part is connected to the valve body (1), and the other part is a standard pipe thread interface of a bath hose, connected to the bath hose. The throat (7) is pressed by the throat gland (5) and installed on the valve body (1).

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