Compact double-Y-shaped multifunctional combination valve

Abstract

The utility model discloses a compact double-Y-shaped multifunctional combination valve which is characterized in that the inlet end and the outlet end of a double-Y-shaped valve body are coaxial, the axis of a first inclined middle hole is parallel to the axis of a second inclined middle hole and intersects with the axis of an inlet and outlet channel, and the axis of the first inclined middle hole and the axis of the second inclined middle hole are inclined relative to the axis of the inlet and outlet channel; the first inclined middle hole is provided with a valve seat hole obliquely communicated with the inlet and outlet channel, the second inclined middle hole is provided with a valve seat hole communicated with the inlet and outlet channel, and the lowest point of the upper end and the highest point of the lower end of the obliquely-arranged valve seat hole are both located in the range of the inlet and outlet channel. Concave flow cavities are formed in the lower ends of the valve seat hole, through which the first inclined middle hole is obliquely communicated with the inlet and outlet channel, and the valve seat hole, through which the second inclined middle hole is communicated with the inlet and outlet channel; the first inclined middle hole and the second inclined middle hole share a pressure bearing wall and are respectively provided with a sealing surface, a thread diameter, a square or circular top and an inner cavity hole. The utility model has the advantages of compact structure, strong versatility and high cost performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the valve manufacturing field, concretely relates to the combination valve of the stop, check, regulating of double Y type valve body, and operating device. BACKGROUND

[0002] The existing Y type stop valve and check valve are in the form of single valve, cannot adapt to the multiple sealing requirement of severe working condition, adopt the welding of two valves, have the defects of many welding seams, large installation space, long construction period, high cost of welding heat treatment and nondestructive testing, the function of single Y type stop valve is single, there is no combination valve of stop valve, regulating valve and check valve. SUMMARY

[0003] The utility model provides a kind of double Y type multifunctional combination valve with compact structure, strong versatility, high cost performance.

[0004] The technical solution of the utility model is as follows:

[0005] A kind of compact double Y type multifunctional combination valve, characterized by: the inlet and outlet end of double Y type valve body are coaxial, there are first inclined middle hole and second inclined middle hole between inlet and outlet end with the axis of outlet and inlet channel is inclined, the axis of first inclined middle hole and the axis of second inclined middle hole are parallel and intersect with the axis of outlet and inlet channel, the axis of first inclined middle hole and the axis of second inclined middle hole are inclined with the axis of outlet and inlet channel, the included angle α range is 45 °-60 °;First inclined middle hole has valve seat hole with outlet and inlet channel oblique, second inclined middle hole has valve seat hole with outlet and inlet channel, the upper end lowest point and lower end highest point of obliquely arranged valve seat hole are all within the range of outlet and inlet channel, the lower end of the valve seat hole of first inclined middle hole and outlet and inlet channel oblique and the valve seat hole of second inclined middle hole and outlet and inlet channel are concave flow cavity, to ensure flow area;First inclined middle hole and outlet and inlet channel oblique valve seat hole and second inclined middle hole and outlet and inlet channel valve seat hole are processed with sealing surface by body or surfacing, or adopt screw thread or taper surface form to install valve seat;First inclined middle hole and second inclined middle hole have shared pressure bearing wall, and have respective sealing surface, thread diameter, square or circular top and inner cavity hole;The end of valve body is welding end or flange, flange or welding end hole is processed into hole suitable for built-in inclined valve flap check valve installation or hole suitable for axial flow check valve installation or through hole without end check valve;

[0006] For non-body seal replaceable valve seat, have two structures of thread and taper surface connected with valve seat hole, oblique flap check valve only uses taper surface to connect valve seat, general stop valve or with anti-noise mesh cover stop valve or lifting type check valve, ball flap check valve adopts universal valve seat, multi-stage regulating valve adopts cylinder type valve seat, axial flow check valve adopts body or inlay ring valve seat;

[0007] Valve disc sealing with valve seat, ordinary stop valve disc, inclined disc check valve disc, multi-stage regulating valve disc, stop check valve and lift check valve disc, needle stop valve disc, ball disc, axial flow check valve disc;

[0008] Valve stem head controlling valve disc movement, stop valve stem with hook, stop check valve stem without shoulder, regulating valve stem with connecting hole, inclined disc check valve pin;

[0009] Valve cover, with hole valve cover for stop valve, needle valve, stop check valve or regulating valve, blind hole valve cover for lift check valve, ball check valve and inclined disc check valve, axial flow check valve with valve disc cover;

[0010] Noise-proof cover for noise-proof and anti-washing working conditions, installed in the inner cavity hole of the second inclined hole;

[0011] Multi-stage regulating valve seat, small taper surface sealing with valve seat hole, valve seat inlet hole, sealing taper surface, sealing surface outlet hole, first and second valve seat partition, end partition surface with valve seat circumferential hole for medium outflow; Multi-stage regulating valve disc with inlet end cylindrical outer diameter surface cooperating with valve seat inlet hole, sealing taper surface, narrow groove between outer diameter and sealing taper surface, two groups of small holes in inlet end cylinder, one group of small holes near sealing surface falling within the narrow groove width range to form an arc-shaped small hole area; first valve disc partition ring cooperating with valve seat sealing surface outlet hole, second and third valve disc partition rings cooperating with first and second valve seat partitions respectively, valve disc end partition ring cooperating with valve seat end partition, equal distance between valve seat partition and valve disc partition, outer cylindrical surface of valve disc partition ring with labyrinth sealing groove, one group of deep labyrinth grooves between first and second valve disc partition rings, first and third valve disc partition rings with uniformly distributed small straight holes, second valve disc partition ring with uniformly distributed small inclined holes, valve disc end partition ring with cylindrical structure, one guide groove on the outer diameter of the cylinder, groove width greater than the diameter of the valve seat circumferential hole, uniformly distributed circumferential holes in the groove, and the diameter of the circumferential holes is smaller than the diameter of the valve seat circumferential holes and the number of circumferential holes is more than the number of valve seat circumferential holes; the number of axial holes on the inner end surface of the cylinder is less than the number of circumferential holes, and the axial holes are connected with the grooves between the third valve disc partition ring and the valve disc end partition ring; the valve disc has a hole cooperating with the valve stem, the second valve disc partition ring and the third valve disc partition ring have a pin hole connected with the valve stem, the position of the pin hole ensures that the end of the valve stem contacts the bottom of the valve disc hole when closed, the valve disc is connected with the valve stem through the pin, and the valve stem controls the multi-stage regulating valve;

[0012] Sealing ring, screw cover, packing, flange, packing sleeve, packing plate, compression bolt, nut, indicator block and valve cover form a valve body sealing and valve stem sealing system.

[0013] The conical surface of the valve seat of the inclined flap check valve is connected with the valve seat hole of the valve body and has a small angle conical surface and a large angle conical surface for thrust sealing. Two lugs are arranged on the outer circle of the valve seat. The lug has two pin shaft holes with axial eccentricity a and radial eccentricity b relative to the sealing conical surface. The sealing conical surface of the valve flap of the inclined flap check valve matches the sealing conical surface of the valve seat, and the position of the pin shaft hole has the same axial eccentricity a and radial eccentricity b as the envelope surface of the outer diameter of the valve seat. The pin shaft has the same radial eccentricity b. The bottom surface of the valve flap has a lateral groove. The bottom surface of the groove is parallel to the top surface of the valve flap. The valve flap is provided with two side-symmetrical torsion springs perpendicular to the pin shaft hole and located between the two side surfaces of the valve flap and the circular lug of the valve seat. The two extending ends of the torsion springs are in contact with the bottom surface of the lug of the valve seat and the bottom surface of the side surface of the valve flap, respectively, so that the valve flap can be automatically reset and sealed.

[0014] A support rod is further provided. One end of the support rod is connected with the top mounting screw hole of the valve body in a threaded manner. The other end of the support rod has a threaded hole. The four quarter connection holes of the gear box seat have diameters in accordance with the ISO 5210 standard. The connection holes have two forms, i.e. a light through hole and a threaded through hole. The gear box body has a screw passing hole connected with the gear box seat. For the valve body top mounting screw hole in accordance with the ISO 5210 standard, a long screw passes through the gear box body. The gear box seat is connected with and fixed to the support rod. For the valve body top four quarter mounting screw hole size not in accordance with the ISO 5210 standard, a transition disc is fixed to the support rod by a screw. The screw passes through the eight quarter bolt hole of the transition disc and is connected with the gear box seat. The screw passes through the four quarter screw hole of the gear box body and the gear box seat to form an integrated gear operation device. The axial force of the valve stem is transmitted to the valve stem nut. The shaft shoulder of the valve stem nut is provided with one thin flat needle bearing on the top and the bottom. The valve stem nut assembly is fixed in the gear box seat by a threaded bearing cover, so that the gear box body does not bear the axial force of the valve stem. The threaded bearing cover is locked by a lock screw. The valve stem nut head has a hexagonal surface or a key groove surface for transmitting torque, which is matched with the hexagonal or key groove surface of the spiral bevel disc. The O-ring at the two heads of the valve stem nut seals the operation device. The spiral bevel disc is connected with the gear box seat through a bearing and is axially fixed by the hollow shaft end of the gear box body. The spiral gear shaft orthogonally engaged with the spiral bevel disc is provided with medium and heavy roller bearings. There is a spacer between the two bearings. The bearings and the spacer are axially fixed on the spiral gear shaft by a spring retainer. Most of the heavy roller bearings are fixed in the hole of the gear box body. The remaining part is used to position the bearing cover. The spiral gear shaft and the bearing are fixed on the gear box body by a screw, a nut and a bearing cover. The bearing cover has four symmetrically non-uniform lock holes with a small angle of 30 degrees. The hole groove of the three-jaw impact block is connected with the spiral gear shaft key. The swing angle between the hand wheel with three quarter inner jaws and the impact block is greater than 30 degrees. When the impact occurs, the gear operation mechanism outputs a larger instantaneous torque. A locking piece is arranged on the hand wheel to lock the operating position of the hand wheel. The locking piece has a six quarter center graduation circle diameter equal to the diameter of the four lock holes on the bearing cover, so as to realize the locking of the hand wheel.

[0015] The two-stage transmission operating device for large output torque removes the bearing cover of the primary reduction spiral bevel gear operating device, replaces it with an internal gear box, and the two ends of the box are respectively matched with heavy roller bearings and planetary reduction box covers. The planetary reduction mechanism is fixed through screws, nuts and four equal division connecting holes of the input end of the gear box. The head of the sun gear input shaft of the planetary reduction mechanism is the same size as the spiral tooth shaft, and is equipped with a three-jaw impact block and an internal three-jaw impact hand wheel. The planetary carrier for fixing the planetary gears is a combined structure, which is composed of a planetary carrier seat, a planetary carrier plate, six spacer sleeves, six screws and six locking nuts. The planetary carrier seat is keyed to the spiral tooth shaft, and has two sets of three-equal-division uniformly distributed holes with different center distances on it. The two sets of holes with different center distances are respectively equipped with center gears and planetary gears with different numbers of teeth. Under the condition that other parts remain unchanged, two kinds of reduction ratios are realized. The planetary carrier plate has two sets of three-equal-division threaded holes corresponding to the planetary carrier seat. The planetary carrier seat is fastened to the threaded holes on the planetary carrier plate through the six spacer sleeves in the middle by screws, and is fastened by locking nuts. The planetary gears are fixed between the planetary carrier seat and the planetary carrier plate in cooperation with the spacer sleeves. Four circular arc grooves with a center distance equal to the screw hole of the input end of the gear box can be machined on the outer circle of the internal gear box. A transition connector with internal and external threads with the same diameter as the circular arc groove is connected with the screw hole of the input end of the gear box. The outer circle of the connector is positioned and prevented from rotating against the circular arc groove of the internal gear box. Screws fix the planetary reduction box cover, the internal gear box and the entire planetary reduction mechanism through the connector and the gear box to form a two-stage reduction valve operating device.

[0016] For a large-size dome valve body double-Y type stop valve, the two-stage reduction operating device has a circular gear box and a gear box seat. The gear box seat has a full-thread through hole with a standard division size according to ISO 5210. Screws pass through the connecting flange of the gear box and the upper part of the full-thread through hole of the gear box seat to connect and fasten. The bracket is connected and fastened with the lower part of the full-thread through hole of the gear box seat with bolts. The stud and nut fix the bracket on the top of the valve body. The nut shaft has a coarse threaded hole connected with the valve stem nut and a fine threaded hole connected with the valve stem nut locking ring. Different pitches of threads connect and lock the valve stem nut and the nut shaft. When the coarse threads of the nut shaft and the valve stem nut adopt keys or splines, the fine threads connected with the two locking rings are still maintained. Two plane needle bearings are installed on the upper and lower surfaces of the shoulder of the nut shaft. The plane needle bearings and the nut shaft are fixed in the gear box seat by the threaded cover. The planetary reduction device of the two-stage reduction gear operating device is removed and replaced with a bearing cover to form a primary reduction spiral bevel gear operating device.

[0017] For small valve without gear operating device, small caliber high-low handwheel operating compact double Y type stop valve is adopted, the valve stem, valve stem nut, bearing, guide indicating block, support plate, O ring and dustproof plate in the double Y type stop valve two set sealing operating system are same; the long handle has thread connected with the valve stem nut; the high handwheel operating system is that the spacer sleeve with same hexagonal hole and thickness as the handwheel 44 is installed on the valve stem nut, the locking washer is installed between the long handle and the spacer sleeve, and the rotating handwheel controls two groups of sealing systems respectively.

[0018] The connecting mode of the compact double Y type multifunctional combined valve is two end flanges, two end welding or one end welding and one end flange, the valve disc of the stop valve is in the form of parabolic line, the number of stages of the valve seat and the valve disc of the multi-stage regulating valve can be increased or reduced, the valve cover is in the form of bolt connection or high-low temperature extension or corrugated pipe, and the operating device is pneumatic, electric or other operating structure.

[0019] The utility model has the following advantages:

[0020] The compact double Y type multifunctional combined valve has the advantages of compact structure, small installation space, convenient manufacturing, less discharge, green environmental protection, no welding seam of multi-valve connection, short construction period, low welding seam heat treatment and inspection cost.

[0021] The internal parts and elements of the double Y type valve can be conveniently machined and installed according to the requirements of the pipeline system to form more than one hundred kinds of valves. The combination of the compact double Y type valve body structure and the square gear operating device with the required functional internal parts solves the long-term difficult problem of realizing a variety of combined valves with three seals of stop, regulation and check in the same valve rod plane and direction in one valve body. The internal parts and structure of the double Y type multifunctional combined valve can form various Y type valves with or without check valves as required, which has strong versatility and high cost performance.

[0022] The integrated inclined disc check valve part composed of a valve seat, a valve disc and a pin shaft torsional spring has simple and compact structure and is convenient to install, and can form Y type, straight through type and clamping type high cost performance inclined plate check valves.

[0023] The multi-stage regulating valve has the transition protection function between small flow fine adjustment and large flow regulation, and the circumferential small holes at the inlet and outlet of the multi-stage regulating valve disc improve the noise reduction and erosion resistance.

[0024] The gear operating device composed of the square gear box and the square gear box seat has small structure size and is suitable for the compact integrated double-Y type valve body structure, the gear operating device formed by combining the square gear box with the round gear box seat and the gear operating device formed by combining the round gear box with the box seat has wide application range, the valve rod axial force (medium force) is not applied to the gear box, the gear box seat is directly connected with the supporting rod without the need of the connecting disc, the valve rod nut is directly connected with the spiral bevel disc, the parts are few, the cost performance is high, the input shaft impacts the hand wheel with large output torque, the hand wheel locking is convenient, the two sets of fixed holes of the planet carrier in the planetary reduction device can be replaced with the center wheel and the planet wheel to conveniently realize the two-stage reduction operating device with different speed ratios. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model will be further explained in connection with the drawings and embodiments.

[0026] Figure 1 is the structure schematic diagram of one embodiment of the utility model.

[0027] Figure 2 is Figure 1 another view of the cross-sectional view.

[0028] Figure 3 is the valve body schematic diagram with flange of the utility model.

[0029] Figure 4 is the multi-stage regulating valve barrel type valve seat schematic diagram.

[0030] Figure 5 is the multi-stage regulating valve valve clack schematic diagram.

[0031] Figure 6 is the double-Y type stop valve plus outlet end inclined valve clack check valve schematic diagram.

[0032] Figure 7 is the double-Y type stop valve plus Y type stop check valve schematic diagram.

[0033] Figure 8 is the anti-noise double-Y type stop valve schematic diagram.

[0034] Figure 9 is the single-Y type anti-noise needle valve plus inclined valve clack check valve schematic diagram.

[0035] Figure 10 is the Y type check valve plus Y type inclined clack check valve schematic diagram.

[0036] Figure 11 is the ball clack check valve plus lifting type check valve schematic diagram.

[0037] Figure 12 is the double-Y type double-inclined clack check valve schematic diagram.

[0038] Figure 13is the Y type needle valve plus Y type regulating valve micro-open position schematic diagram.

[0039] Figure 14 is the double Y type needle valve plus anti-noise lift check valve plus inclined flap check valve schematic diagram.

[0040] Figure 15 is the Y type anti-noise needle valve plus Y type regulating valve open position schematic diagram.

[0041] Figure 16 is the Y type stop plus double inclined flap check valve schematic diagram.

[0042] Figure 17 is the partial enlarged view of Figure 16

[0043] Figure 18 is the stop valve plus inclined flap and axial flow check valve.

[0044] Figure 19 is the large size dome valve body and circular gear box seat double Y type stop valve.

[0045] Figure 20 is the small caliber high-low hand wheel operation double Y type stop valve schematic diagram. DETAILED DESCRIPTION

[0046] A compact double Y type multifunctional combined valve, the inlet and outlet ends of the double Y type valve body 1 are coaxial, the axis 001 of the inlet and outlet channels 01, between the inlet and outlet ends, has a first inclined middle hole 02 and a second inclined middle hole 03 inclined to the axis 001, the axis of the first inclined middle hole is 002, the axis of the second inclined middle hole is 003, 002 and 003 are parallel and intersect with 001, the axes 002 and 003 are inclined to the axis 001, the included angle α ranges from 45° to 60°. The valve seat hole 012 of the inclined intersection of the middle hole 02 and the channel 01, the valve seat hole 013 of the intersection of the middle hole 03 and the channel 01, the upper end of the lowest point and the lower end of the highest point of the inclined valve seat hole are within the range of the channel 01, the lower end of the valve seat hole 012 and 013 has a concave flow cavity to ensure the flow area; the valve seat hole 012 and 013 can be processed with a body or a surfacing way to process a sealing surface, or can be processed into a threaded or conical surface form to install a valve seat; the first inclined middle hole and the second inclined middle hole have a shared pressure bearing wall 04; and have their own sealing surface D, thread diameter M, square or circular top P, inner cavity hole D2, D3; the top has four equal division mounting screw holes Z uniformly distributed along the axes 002 and 003, when the middle hole is used for lift check valve ball check valve or inclined flap check valve, the top screw hole does not need to be processed. The end of the valve body 1 is a welding end or a flange, the flange or welding end hole can be processed into a hole T4 suitable for installing an inclined flap check valve, or a hole A4 suitable for installing an axial flow check valve, or a through hole without end check valve.

[0047] ​The non-body seal replaceable valve seat has two structures of threads and conical surface connected with valve seat holes 012 and 013. The inclined flap check valve only uses the conical surface to connect the valve seat 202. The general stop valve or stop valve with anti-noise mesh cover or lifting check valve ball flap check valve adopts the universal valve seat 2. The multi-stage regulating valve adopts the cylinder type valve seat 201. The shaft flow check valve seat (body or ring) 206.

[0048] The valve flap that forms a sealing pair with the valve seat has a general stop valve flap 3, an inclined flap check valve flap 302, a multi-stage regulating valve flap 301, a stop check valve and lifting check valve flap 303, a needle type stop valve flap 304, a ball flap 310, and a shaft flow check valve flap 306.

[0049] The valve stem head part that controls the movement of the valve flap has a stop valve stem 4 with a hook, a stop check valve stem 403 without a shoulder on the head part, a regulating valve stem 401 with a connecting hole on the head part, and an inclined flap check valve pin 402.

[0050] The valve cover includes a hole type valve cover 5 and a blind hole type valve cover 501. The hole type valve cover 5 is used for stop valves, needle valves, stop check valves, and regulating valves. The blind hole type valve cover 501 is used for piston type check valves, spherical check valves, and inclined flap check valves. The shaft flow check valve flap cover 506 has a guide cover and a valve stem positioning.

[0051] The anti-noise mesh cover 6 is used for anti-noise and anti-erosion working conditions and is installed in a slightly larger inner cavity hole D3. The sealing ring 7, screw cover 8, 801, packing 9, flange 10, packing sleeve 11, packing plate 12, compression bolt 13, nut 14, and indicating block 15 are parts that form a valve body sealing and valve stem sealing system 500 with the valve body and valve cover.

[0052] Different functions can be achieved by combining different forms of valve seats, valve flaps, valve stems, and valve covers with mesh covers. Table 1 shows part of the combined valves that can be formed by the same valve body and the main functions.

[0053] Table 1 shows the internal parts and main functions of the typical double Y-type valve body combined valve.

[0054]

[0055]

[0056] The valve types and functions listed in Table 1 are only a small part of the combination. Other function valves can be combined and expanded as needed. When the outlet port is installed with an inclined flap or shaft flow check valve, the valve type of the combined valve doubles.

[0057] Further, when the double Y-type valve body is simplified to a single Y-type valve body 101, the Y-type middle cavity can be installed with the same parts as described above. The outlet port can be installed with the same inclined flap or shaft flow check valve as described above to form the combined valve types in Table (2).

[0058] Table 2 Valve type and parts of the combination valve of single Y type valve body and outlet end check

[0059]

[0060]

[0061] The valve seat 202 of the inclined flap check valve has a small angle taper surface matched and sealed with the valve seat hole of the valve body and a large angle taper surface of the thrust seal, and two lugs are provided on the outer circle of the valve seat, and two pin shaft holes C with axial eccentricity a and radial eccentricity b relative to the sealing taper surface MZ are provided on the lugs. The sealing taper surface MB of the valve flap 302 of the inclined flap check valve is matched with the sealing taper surface of the valve seat, and the positions of the pin shaft holes C with the same axial eccentricity a and radial eccentricity b are matched with the pin shaft 402 with the same radial eccentricity b and the same envelope surface of the outer diameter of the valve seat, so that the positions of the valve seat and the valve flap are kept. The valve flap with the butterfly cross section has a low flow resistance characteristic, and the bottom surface of the valve flap has a side inclined groove, and the bottom surface of the groove is parallel to the top surface of the valve flap. The inclined groove increases the eccentric torque for sealing when the valve flap is closed. The valve flap is provided with two side-symmetrical torsional springs perpendicular to the pin shaft hole C and located between the two side surfaces of the valve flap and the arc lugs of the valve seat. The two extending ends of the torsional springs are in contact with the bottom surface of the lug of the valve seat and the bottom surface of the side surface of the valve flap, respectively, so that the valve flap can be automatically reset tightly. The two arc lugs and the central position of the valve seat can be designed to meet the requirements of the three eccentric check valve. The two eccentric or three eccentric inclined flap check valve components composed of the valve seat, the valve flap and the pin shaft torsional spring have simple and compact structure, can be assembled with Y type, straight through type and clamping type valve body, and form various types of inclined plate check valves without penetration and high cost performance.

[0062] The valve seat 201 of the multi-stage regulating valve has a small taper Z201 that cooperates with the valve seat hole 012 (or 013) of the valve body to seal, an inlet hole R201, a sealing taper M201, a sealing surface outlet hole C201, and the surfaces of the partitions G1 and G2 and the end partition D201 are uniformly distributed with circumferential holes n201 for the medium to flow out of the valve seat. The valve disc 301 of the multi-stage regulating valve has an inlet end cylindrical outer diameter surface R301 that cooperates with the inlet hole R201 of the valve seat, a sealing taper M301, a narrow groove b301 between the outer diameter R301 and the sealing taper M301, two groups of small holes e301 in the inlet end cylinder, and the small hole part of one group near the sealing surface falls within the width of the narrow groove to form an arc-shaped small hole area. The partition ring C301 cooperates with the sealing surface outlet hole C201 of the valve seat, the partition rings G11 and G22 cooperate with the partitions G1 and G2 of the valve seat, and the end partition ring D301 cooperates with the end partition D201 of the valve seat. The distance between the partitions of the valve seat and the partition rings of the valve disc is equal, the outer circular surface of the valve disc partition ring C301, G11, and G22 has a labyrinth sealing groove, there is a group of deep labyrinth grooves between the partition ring C301 and G11, the partitions C301 and G22 are processed with uniformly distributed small straight holes K301 and K22, the partition ring G11 is processed with uniformly distributed small inclined holes K11, the end partition ring D301 of the valve disc is a cylindrical structure with a flow guide groove on the outer diameter of the cylinder, the groove width of the flow guide groove is greater than the diameter of the circumferential hole n201 of the valve seat, and the groove is uniformly distributed with circumferential holes n301, the diameter of n301 is smaller than n201, and the number is more than the small holes n201 of the valve seat. The inner end surface of the cylinder is uniformly distributed with a smaller number of axial holes z301 than the circumferential holes n301, the axial holes z301 are connected with the grooves between the partition ring G22 and the end partition ring D301; the valve disc has a hole d301 in the middle that cooperates with the valve rod 401, the partition ring G11 and the partition ring G22 of the valve disc have a pin hole X301 connected with the valve rod 401, the position of the pin hole ensures that the end of the valve rod is in contact with the bottom of the hole in the middle of the valve disc when it is closed, the valve disc 301 is connected with the valve rod 401 through the pin 407, and the valve rod controls the multi-stage regulating valve.

[0063] Further, in the micro-on state of the multi-stage regulating valve, the area of the medium flowing between the sealing surface M201 of the valve seat and the sealing surface M301 of the valve disc is the arc-shaped flow-through surface of the small holes e301 in the inlet end hole of the valve disc, which is blocked after bending over the sealing surface and then diffuses to the front chamber through the small holes K301 on the partition ring C301, and then diffuses to G11 through the inclined small holes K11 of the partition ring G11, and then diffuses to the middle chamber between G11 and G22, and then diffuses to the back chamber through the small holes K22 on the partition ring G22, and then bends and flows into the cylinder inside the end partition ring D301 of the valve disc through the axial holes Z301 and the circumferential holes n301, and then bends and flows into the annular ring composed of the outer circular surface of the valve seat and the middle chamber hole of the valve body, and then bends and finally flows out of the outlet end of the valve, and then the flow direction changes through the multi-stage small holes of the inflow and outflow valve, the area changes and bends between the mesh and the groove, and adapts to the regulation of small flow with high pressure difference.

[0064] Further, the multi-stage regulating valve is in semi-open state, the medium flows from the 1st group of circumferential small holes e301 in the inlet end cylinder of the valve disc to the valve seat circumferential small holes n201 and then to the outlet end of the valve body, the flow trajectory is bent at 17 and the flow cross section is at 20, the expansion and contraction rate between the cross sections changes with the semi-open to full open state. In full open state, the 2nd group of circumferential small holes e301 in the inlet end cylinder of the valve disc is in full flow state, the relative position of the valve disc spacer ring and the valve seat spacer plate in the middle flow passage section (including G1, G2, G11, G22, C301) is in the middle of the respective groove width at equal distance, the diffusion and contraction rate of the flow area is minimum, and in the outlet end full open state, the center lines of the different number of circumferential small holes n201 and n301 in the valve seat end spacer plate D201 and the valve disc end spacer ring are aligned in the axial direction and circumferentially offset. The medium blocked by the misaligned small holes enters the guide groove through the small holes n301 on the valve disc, bends in the guide groove, flows into the valve seat small holes n201, and then passes through the circular ring between the valve seat outer circle and the middle cavity hole of the valve body to the outlet end of the valve body.

[0065] One end of the support rod 16 is connected with the valve body top mounting screw hole Z by screwing, and the other end of the support rod 16 has a threaded hole; the four-equal-part connecting holes of the gear box seat 17 are distributed in accordance with the ISO 5210 standard, and the connecting holes are in the form of light through holes and threaded through holes; the gear box body 18 has a flange connected with the gear box seat 17 and a screw passing hole. For the valve body top mounting screw hole Z in accordance with the ISO 5210 standard, the long screw 19 passes through the gear box body 18, the gear box seat 17 is connected with the support rod 16 and fixed. For the valve body top four-equal-part mounting screw hole size not in accordance with the ISO 5210 standard, the transition disc 20 is fixed on the support rod 16 by the screw 1901, the screw 1902 is connected with the gear box seat 1701 through the eight-equal-part bolt hole of the transition disc 20, and the screw 1903 is connected with the four-equal-part screw hole on the gear box seat 1701 through the gear box body 18 to form an integrated gear operation device. The axial force of the valve stem 4 is transmitted to the valve stem nut 21, the shaft shoulder of the valve stem nut 21 is provided with an upper and lower flat surface needle bearing 22, the valve stem nut assembly is fixed in the gear box seat 17 by the threaded bearing cover 23, the gear box body does not bear the axial force of the valve stem, the threaded bearing cover is locked by the set screw, the head of the valve stem nut has a torque transmission hexagonal surface or key groove surface matched with the hexagonal or key groove surface of the spiral bevel gear disc 24, the O-ring at the two heads of the valve stem nut seals the operation device, the spiral bevel gear disc 24 is connected with the gear box seat 17 through the bearing 25 and axially fixed by the inner hollow shaft end of the gear box body 18, the spiral gear shaft 26 orthogonally engaged with the spiral bevel gear disc 24 is provided with medium and heavy roller bearings, there is a spacer sleeve between the two bearings, the bearings and the spacer sleeve are axially fixed on the spiral gear shaft 26 by the spring retainer, most of the heavy roller bearing 32 is fixed in the hole of the gear box body 18, a part is left for positioning the bearing cover 27, and the spiral gear shaft 26 and the bearing assembly are fixed on the gear box body 18 by the screw, the nut and the bearing cover 27, the bearing cover 27 has four symmetrical non-uniform lock holes with a small angle of 30 degrees, the hole groove of the three-jaw impact block 28 is keyed connected with the spiral gear shaft 26, the swing angle between the impact block and the hand wheel 29 with three-equal-part inner claws is greater than 30 degrees, and the impact makes the gear operation mechanism output a larger instantaneous torque, the locking piece 30 on the hand wheel 29 can lock the hand wheel operation position, the locking piece has a six-equal-part central graduation circle diameter equal to the diameter of the four lock holes on the bearing cover 27, and the hand wheel is locked, and the part numbers 17 to 30 form a first-stage reduction spiral bevel gear operation device 100. The bearing cover 27 can be connected with a pneumatic or electric driving head in the form of a pneumatic or electric connecting disc.

[0066] Further, for the secondary transmission operation device of larger output torque, remove the bearing cover 27 of the primary reduction spiral bevel gear operation device 100, replace it with an internal gear box 31, the two ends of the box 31 are matched with heavy roller bearings 32 and planetary reduction box cover 33 respectively, and the planetary reduction mechanism is fixed through the four equal division connecting holes of the screw, nut and gear box 18 input end. The head of the sun gear input shaft 34 of the planetary reduction mechanism is the same size as the spiral tooth shaft 26, and the three-jaw impact block 28 and the internal three-jaw impact hand wheel 29 are installed. The planetary carrier 35 is a combined structure composed of planetary carrier seat 36, planetary carrier plate 37, 6 spacer sleeves 38, 6 screws and 6 locking nuts. The planetary carrier seat 36 is keyed to the spiral tooth shaft 26, and has two sets of three-equal division evenly distributed holes with different center distances on it. The two sets of holes with different center distances can respectively install center wheels and planetary gears with different teeth. Under the condition that other parts remain unchanged, two kinds of reduction ratios are realized. The planetary carrier plate 37 has two sets of three-equal division threaded holes corresponding to the planetary carrier seat 36. The screws fasten the planetary carrier seat 36 through the six spacer sleeves 38 in the middle and the threaded holes on the planetary carrier plate 37, and are fastened by locking nuts. The planetary gears 35 are fixed between the planetary carrier seat 36 and the planetary carrier plate 37 by cooperating with the spacer sleeves 38. Four circular arc grooves with the same center distance as the threaded holes of the gear box 18 input end can be machined on the outer circle of the internal gear box 31. The transition connector 39 with the same diameter as the circular arc groove and with internal and external threads is connected with the threaded holes of the gear box 18 input end. The outer circle of the connector is positioned and prevented from rotating with the circular arc groove of the internal gear box 31. The screws fasten the planetary reduction box cover 33, the internal gear box 31, and the whole planetary reduction mechanism through the connector 39 with the gear box 18 to form the secondary reduction valve operation device 200. The planetary reduction box cover 33 can be connected with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection disc.

[0067] Further, for the large size double Y type globe valve, the secondary speed reduction operating device 600 has a circular gear box 1802 and a gear box seat 1702, the gear box seat 1702 has a full thread through hole with ISO 5210 standard indexing size, a screw 1904 passes through the connecting flange of the gear box 1802 and is connected and fastened with the upper part of the full thread through hole of the gear box seat, a support 201 is connected and fastened with the lower part of the full thread through hole of the gear box seat by a bolt 1905, and a stud 1906 and a nut 1907 fix the support 201 on the top of the valve body. The nut shaft 2101 has a coarse thread hole connected with the valve stem nut 2102 and a fine thread hole connected with the valve stem nut locking ring 2103, the different pitches of the threads connect and lock the valve stem nut with the nut shaft, when the coarse thread of the nut shaft 2101 and the valve stem nut 2102 adopts a key or a spline, the fine thread still remains connected with the two locking rings 2103. The upper and lower surfaces of the shaft shoulder of the nut shaft 2101 are provided with two plane needle bearings 2201, the plane needle bearings and the nut shaft are fixed in the gear box seat 1702 by a threaded cover 2301, the gear box does not bear the axial force of the valve stem, and 600 in the figure is the secondary speed reduction gear operating device, removing the planetary speed reduction device and installing a bearing cover is a primary speed reduction spiral bevel gear operating device.

[0068] Further, for the small valve without gear operating device, Figure 20 The small size high-low handle operating compact double Y type globe valve has the same valve stem 40, valve stem nut 43, bearing 42, guide indicating block 415, support plate 41, O ring 49 and dust plate 50 in the double Y type globe valve.

[0069] The connecting mode of the compact double Y type multifunctional combined valve can be two end flanges, two end welds, one end weld and one end flange, the valve disc of the globe valve can be a parabolic type, the valve disc of the check valve can be a ball, the number of stages of the valve seat and the valve disc of the multi-stage regulating valve can be increased or decreased, and the valve cover can be a bolt connection or a high-low temperature extension or a corrugated pipe.

[0070] The compact double Y type multifunctional combined valve and its operating device can be pneumatic, electric or other operating structures.

[0071] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any skilled person in the art can make minor modifications or changes to the disclosed technical solutions without departing from the technical solution of the present application, and any simple modification, equivalent replacement, improvement, etc. of the above embodiments, as long as it does not depart from the technical solution of the present application and is within the spirit and principles of the present application, is still within the protection scope of the technical solution of the present application.

Claims

1. A compact dual Y multifunction combination valve characterized by: The inlet and outlet ends of the double-Y valve body (1) are coaxial, and between the inlet and outlet ends are first and second inclined middle holes (02, 03) inclined to the axis (001) of the inlet and outlet passage (01), the axis (002) of the first inclined middle hole is parallel to the axis (003) of the second inclined middle hole and intersects the axis (001) of the inlet and outlet passage (01), and the axes (002, 003) of the first and second inclined middle holes are inclined to the axis (001) of the inlet and outlet passage (01); the first inclined middle hole (02) has a valve seat hole (012) inclinedly penetrating the inlet and outlet passage (01), and the second inclined middle hole (03) has a valve seat hole (013) penetrating the inlet and outlet passage (01), the upper end lowest point and the lower end highest point of the inclined valve seat hole are within the range of the inlet and outlet passage (01), the lower end of the valve seat hole (012) of the first inclined middle hole (02) and the valve seat hole (013) of the second inclined middle hole (03) penetrating the inlet and outlet passage (01) has a concave flow cavity to ensure the flow area; the first inclined middle hole (02) and the second inclined middle hole (03) have a sealing surface processed by body or surfacing, or have a threaded or conical surface to install the valve seat; the first and second inclined middle holes have a shared pressure-bearing wall (04) and have respective sealing surfaces, thread diameters, square or circular top portions and inner cavity holes; the end of the valve body (1) is a welding end or a flange, and the flange or welding end hole is processed into a hole suitable for installing an inclined disc check valve or a hole suitable for installing an axial flow check valve or a through hole without installing an end check valve; The non-body seal replaceable valve seat has two structures of threads and conical surfaces connected with the valve seat hole, the inclined disc check valve only uses a conical surface to connect the valve seat (202), the general stop valve or the lift check valve, the ball check valve uses a general valve seat (2), the multi-stage regulating valve uses a cylinder valve seat (201), and the axial flow check valve uses a body or a ring-inlaid valve seat (206); The valve disc paired with the valve seat to form a seal has a general stop valve disc (3), an inclined disc check valve disc (302), a multi-stage regulating valve disc (301), a stop check valve and a lift check valve disc (303), a needle stop valve disc (304), a ball disc (310) and an axial flow check valve disc (306); The valve stem head forms a stop valve stem (4) with a hook, a stop check valve stem (403) without a shoulder, a regulating valve stem (401) with a connecting hole and an inclined disc check valve pin (402); The valve cover is a hole type valve cover (5) and a blind hole type valve cover (501), the hole type valve cover (5) is used for a stop valve, a needle valve, a stop check valve or a regulating valve, the blind hole type valve cover (501) is used for a lift check valve, a ball check valve and an inclined disc check valve; the axial flow check valve with a guide cover and a valve stem positioning in the inlet and outlet passage uses a valve disc cover (506); The barrel type valve seat (201) of the multi-stage regulating valve has a small taper surface matched with the valve seat hole of the valve body for sealing, the valve seat inlet hole, the sealing taper surface, the sealing surface outlet hole, the first and second valve seat partitions and the end partition surface are uniformly distributed with the valve seat circumferential holes for the medium to flow out of the valve seat; the valve clapper (301) of the multi-stage regulating valve has an inlet end cylindrical outer diameter surface matched with the valve seat inlet hole for sealing, a sealing taper surface, a narrow groove between the outer diameter and the sealing taper surface, two groups of small holes in the inlet end cylinder, the small holes near the sealing surface partially fall within the narrow groove width range to form an arc-shaped small hole area; the valve clapper has a first valve clapper partition matched with the valve seat sealing surface outlet hole, a second and third valve clapper partition matched with the first and second valve seat partitions respectively, and a valve clapper end partition matched with the valve seat end partition, the spacing distance between the valve seat partitions and the valve clapper partitions is equal, the outer cylindrical surface of the valve clapper partition has a labyrinth sealing groove, there is a group of deep labyrinth grooves between the first valve clapper partition and the second valve clapper partition, the first valve clapper partition and the third valve clapper partition are uniformly distributed with small straight holes, the second valve clapper partition is uniformly distributed with small inclined holes, the valve clapper end partition is a cylindrical structure, the outer diameter of the cylinder has a flow guide groove, the groove width of the flow guide groove is greater than the diameter of the valve seat circumferential hole, the groove is uniformly distributed with circumferential holes, and the diameter of the circumferential holes is smaller than the diameter of the valve seat circumferential holes and the number of the circumferential holes is greater than the number of the valve seat circumferential holes; the inner end surface of the cylinder is uniformly distributed with axial holes, the number of the axial holes is less than the number of the circumferential holes, the axial holes are connected with the grooves between the third valve clapper partition and the valve clapper end partition; the valve clapper has a hole matched with the valve rod (401) in the middle, the second valve clapper partition and the third valve clapper partition have a pin hole connected with the valve rod (401), the position of the pin hole ensures that the end of the valve rod is in contact with the bottom of the hole in the middle of the valve clapper when closed, the valve clapper (301) is connected with the valve rod (401) through the pin (407), and the valve rod controls the multi-stage regulating valve; The sealing ring (7), the screw cap (8, 801), the packing (9), the pressing flange (10), the packing pressing sleeve (11), the packing pressing plate (12), the pressing bolt (13), the nut (14), and the indicating block (15) and the valve body cover form a valve body sealing and valve rod sealing system.

2. The compact dual Y multifunction combination valve of claim 1, wherein: The conical surface connecting valve seat (202) of the inclined clapper check valve has a small angle taper surface matched with the valve seat hole of the valve body for sealing and a large angle taper surface for thrust sealing, the outer circle of the valve seat has two lugs, the two lugs have pin shaft holes with axial eccentricity a and radial eccentricity b relative to the sealing taper surface, the sealing taper surface of the inclined clapper check valve clapper (302) matches with the sealing taper surface of the valve seat, and has the same position of the pin shaft holes with axial eccentricity a and radial eccentricity b, and the same radial eccentricity b of the pin shaft (402) of the valve seat outer diameter envelope surface, the bottom surface of the valve clapper has a lateral groove, the bottom surface of the groove is parallel to the top surface of the valve clapper, the valve clapper is provided with two side-symmetrical torsion springs perpendicular to the pin shaft holes, which are located between the two side surfaces of the valve clapper and the circular arc lugs of the valve seat, and the two extending ends of the torsion springs are in contact with the bottom surface of the valve seat lug and the bottom surface of the valve clapper side surface respectively, so that the valve clapper can be automatically reset and sealed.

3. The compact dual Y multifunction combination valve of claim 1, wherein: The support rod (16) is connected with the top mounting screw hole of the valve body at one end, and has a threaded hole at the other end; the four-equal-division connecting holes of the gear box seat (17) have diameters in accordance with the ISO 5210 standard, and the connecting holes have two forms, i.e. a light hole and a threaded hole; the gear box body (18) has a screw passing hole for connecting with the gear box seat (17); for the valve body top mounting screw hole in accordance with the ISO 5210 standard, the long screw (19) passes through the gear box body (18), the gear box seat (17) is connected with the support rod (16) and fixed; for the valve body top four-equal-division mounting screw hole size not in accordance with the ISO 5210 standard, the transition disc (20) is fixed on the support rod (16) by the screw (1901), the screw (1902) passes through the eight-equal-division bolt hole of the transition disc (20) and is connected with the gear box seat (1701), and the screw (1903) passes through the four-equal-division screw hole of the gear box seat (1701) and is connected with the gear box body (18) as a whole gear operating device; the axial force of the valve rod (4) is transmitted to the valve rod nut (21), the shaft shoulder of the valve rod nut (21) is provided with one thin flat needle bearing (22) above and below, the valve rod nut assembly is fixed in the gear box seat (17) by the threaded bearing cover (23), so that the gear box body does not bear the axial force of the valve rod, the threaded bearing cover is locked by the lock screw, the head of the valve rod nut has a hexagonal surface or a key groove surface for transmitting torque and matches the hexagonal or key groove surface of the spiral bevel disc (24), the O-ring at the two heads of the valve rod nut seals the operating device, the spiral bevel disc (24) is connected with the gear box seat (17) through the bearing (25) and is axially fixed by the inner hollow shaft end of the gear box body (18), the spiral gear shaft (26) which is in orthogonal engagement with the spiral bevel disc (24) is provided with a medium and heavy roller bearing, there is a spacer between the two bearings, the bearing and the spacer are axially fixed on the spiral gear shaft (26) by the spring retainer, most of the heavy roller bearing (32) is fixed in the hole of the gear box body (18), a part is left for positioning the bearing cover (27), and the spiral gear shaft (26) and the bearing are fixed on the gear box body (18) by the screw, the nut and the bearing cover (27), the bearing cover (27) has four symmetrical non-uniform lock holes with a small angle of 30 degrees, the hole groove of the three-jaw impact block (28) is keyed connected with the spiral gear shaft (26), the swing angle between the hand wheel (29) with three-equal-division inner claws and the impact block is greater than 30 degrees, so that a larger instantaneous torque is output by the gear operating mechanism when the impact occurs, the locking piece (30) is arranged on the hand wheel (29) for locking the operating position of the hand wheel, the locking piece has a six-equal-division center graduation circle with a diameter equal to that of the four lock holes on the bearing cover (27), so that the hand wheel is locked; The secondary transmission operating device for large output torque adopts an internal gear box (31), the two ends of the box (31) are matched with heavy roller bearings (32) and planetary reduction box cover (33) respectively, the planetary reduction mechanism is fixed through the four equal division connecting holes of the input end of the gear box (18) and screws and nuts, the head of the sun wheel input shaft (34) of the planetary reduction mechanism is the same size as the spiral tooth shaft (26), and is installed with three-jaw impact block (28) and internal three-jaw impact hand wheel (29), the planetary carrier (35) is fixed, which is a combined structure composed of planetary carrier seat (36), planetary carrier plate (37), six spacer sleeves (38), six screws and six locking nuts, the planetary carrier seat (36) is keyed with the spiral tooth shaft (26), the planetary carrier seat (36) has two groups of three-equal-division uniformly distributed holes with different center distances, the two groups of holes with different center distances are installed with center wheels and planetary gears with different numbers of teeth, and two kinds of reduction ratios are realized under the condition that other parts remain unchanged; the planetary carrier plate (37) has two groups of three-equal-division threaded holes corresponding to the planetary carrier seat (36), the planetary carrier seat (36) is fastened with the threaded holes on the planetary carrier plate (37) through the six spacer sleeves (38) in the middle by screws and is fastened by locking nuts, the planetary gear (35) is matched with the spacer sleeve (38) and is fixed between the planetary carrier seat (36) and the planetary carrier plate (37), four circular arc grooves with the same center distance as the input end threaded hole of the gear box (18) can be machined on the outer circle of the internal gear box (31), the transition connector (39) with the same diameter as the circular arc groove and with internal and external threads is connected with the input end threaded hole of the gear box (18), the outer circle of the connector is positioned and prevented from rotating with the circular arc groove of the internal gear box (31), the planetary reduction box cover (33), the internal gear box (31) and the whole planetary reduction mechanism are fixed with the gear box (18) through the connector (39) to form a secondary reduction valve operating device (200). The two-stage speed reduction operating device (600) of the large-size double-Y type globe valve has a circular gear box (1802) and a gear box seat (1702), the gear box seat (1702) has a full thread through hole with a standard division size according to ISO 5210, a screw (1904) is connected and fastened with the upper part of the full thread through hole of the gear box seat through the connecting flange of the gear box (1802), a support is connected and fastened with the lower part of the full thread through hole of the gear box seat through a bolt (1905), a stud (1906) and a nut (1907) fix the support on the top of the valve body; the nut shaft (2101) has a coarse thread hole connected with the valve stem nut (2102) and a fine thread hole connected with the valve stem nut locking ring (2103), the threads with different pitches connect and lock the valve stem nut and the nut shaft, when the coarse thread of the nut shaft (2101) and the valve stem nut (2102) adopts a key or a spline, the fine thread connected with the two locking rings (2103) is still kept; two plane needle bearings (2201) are arranged on the upper and lower surfaces of the shaft shoulder of the nut shaft (2101), the plane needle bearings and the nut shaft are fixed in the gear box seat (1702) through a threaded cover (2301), and a planetary speed reduction device of the two-stage speed reduction gear operating device (600) is formed.

4. The compact dual Y multifunction combination valve of claim 3, wherein: For small valves without gear operating devices, a compact double-Y type globe valve with a small-diameter high-low hand wheel is adopted, the valve stem (40), the valve stem nut (43), the bearing (42), the guide indicating block (415), the support plate (41), the O-ring (49) and the dustproof plate (50) in the two sets of sealing operating systems of the double-Y type globe valve are the same; the long handle (46) has a thread connected with the valve stem nut (43); the high-hand wheel operating system is that a spacer (45) with the same hexagonal hole and thickness as the hand wheel (44) is installed on the valve stem nut (43), a locking washer (47) is installed between the long handle (46) and the spacer (45), and the rotary hand wheels (48) and (44) control two sets of sealing systems respectively.

5. The compact dual Y multifunction combination valve of claim 1, wherein: The connection mode of the compact double-Y type multifunctional combined valve is two-end flanges, two-end welding or one-end welding and one-end flange, the valve disc of the globe valve is in a parabolic shape, the number of stages of the valve seat and the valve disc of the multi-stage regulating valve can be increased or decreased, the valve cover is in a bolt connection or high-low temperature extension or corrugated pipe, and the operating device is pneumatic or electric.

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