Compact TY-type brake cut-off multifunctional combination valve

Abstract

The utility model discloses a compact TY type gate cut-off multifunctional combination valve which is characterized in that a first vertical middle hole perpendicular to the axis of an inlet and outlet channel and a second inclined middle hole inclined to the axis are formed between an inlet end and an outlet end, and two parallel valve seat holes are formed in the first vertical middle hole and the inlet and outlet channel in a penetrating mode; 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 inclined valve seat hole are both located in the range of the inlet and outlet channel. Two parallel or wedge-shaped valve seats are mounted in the two parallel valve seat holes; the high point where the straight outer diameter and the inclined outer diameter are connected in a penetrating mode is located within the range of the outer diameter of the channel, and the first vertical middle hole and the second inclined middle hole share a pressure bearing wall and are provided with respective sealing faces, thread diameters, square or circular tops and inner cavity holes. The device is compact in structure, small in installation space, convenient to manufacture, low in emission and environment-friendly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of valve manufacturing, specifically relates to the combination valve and operating device of TY type valve body's gate valve and stop check regulating. BACKGROUND

[0002] The existing gate valve, Y type stop valve and check valve are in the form of single valve, cannot adapt to the requirement of multiple functions integrated into one and multiple seals, adopt the welding of two and more valves, have the defects of many welding seams, large installation space, long construction period, high cost of welding heat treatment and nondestructive testing, single gate valve cannot be regulated, there is no valve combined by gate valve, stop valve and regulating valve, check valve. SUMMARY

[0003] The utility model discloses a compact structure, small installation space, convenient manufacturing, less discharge, green and environment-friendly compact TY type gate stop multifunctional combination valve.

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

[0005] A compact TY type gate stop multifunctional combination valve, characterized in that: the inlet and outlet ends of the TY type valve body are coaxial, there are a first vertical middle hole perpendicular to the axis of the inlet and outlet passage and a second inclined middle hole inclined to the axis between the inlet and outlet ends, the axis of the first vertical middle hole and the axis of the second inclined middle hole intersect with the axis of the inlet and outlet passage, the axis of the second inclined middle hole is inclined to the axis of the inlet and outlet passage at an angle alpha ranging from 45 to 60 degrees; the first vertical middle hole and the inlet and outlet passage have two parallel valve seat holes, the second inclined middle hole has a valve seat hole penetrating the inlet and outlet passage, 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, the lower end of the valve seat hole has a concave flow cavity to ensure the flow area; two parallel valve seat holes are installed with two parallel or wedge-shaped valve seats, the valve seat hole has a sealing surface processed by the body or surfacing, or is processed into a threaded or conical form installation valve seat; the high point of the straight outer diameter and the inclined outer diameter penetrates the channel outer diameter range, the first vertical middle hole and the second inclined middle hole have a shared pressure bearing wall, which reduces the length of the valve body and has respective sealing surfaces, threaded diameters, square or circular top parts and inner cavity holes; the end part of the valve body is a welding end or a flange, the flange or welding end hole is processed into a hole suitable for installing the built-in inclined valve disc check valve, or a hole suitable for installing the axial flow check valve, or a through hole without end part check valve;

[0006] The non-body seal replaceable valve seat in the inclined middle hole, connected with the valve seat hole, has two structures of thread and taper surface, the inclined flap check valve only uses taper surface to connect the valve seat, the general stop valve or the stop valve with noise-proof cover or the lift type or spherical check valve uses the universal valve seat, and the multi-stage regulating valve uses the cylinder type valve seat; the valve flap matched with the valve seat to form sealing pair is the valve flap of the general stop valve, the inclined flap check valve, the multi-stage regulating valve, the stop check valve and the lift type check valve, the needle type stop valve, and the ball; the head part of the valve stem controlling the movement of the valve flap has the valve stem with hook head for the stop valve, the valve stem with no shoulder in the head part for the stop check valve, the valve stem with connecting hole in the head part for the regulating valve, and the pin shaft of the inclined flap check valve; the valve cover is divided into the hole type valve cover and the blind hole type valve cover, the hole type valve cover is used for the stop valve, the needle valve, the stop check valve and the regulating valve, and the blind hole type valve cover is used for the lift type check valve, the spherical check valve and the inclined flap check valve; the noise-proof cover is used for the working condition of noise-proof and anti-scouring, and is installed in the inclined inner cavity hole with slightly larger size; the sealing ring, the screw cover, the packing, the flange of pressing plate, the packing pressing sleeve, the packing pressing plate, the pressing bolt, the nut and the indicating block parts form the sealing system of the valve body and the valve cover in the inclined middle hole;

[0007] In the vertical middle hole, the wedge gate valve valve seat and the parallel gate valve valve seat, the wedge gate valve valve seat with V-shaped regulating port and the parallel gate valve valve seat with V-shaped regulating port are connected with the valve seat hole; the single wedge plate and the double wedge plate and the parallel double plate have the same universal size connected with the valve stem; the valve stem controls the single plate or the double plate or the parallel double plate; the valve cover is the hole type valve cover; the sealing ring, the screw cover, the packing, the flange of pressing plate, the packing pressing sleeve, the packing pressing plate, the pressing bolt, the nut and the indicating block parts form the sealing system of the valve body and the valve cover in the vertical middle hole; the single wedge plate, the double wedge plate and the double plate in the vertical hole are combined with the through hole and the V-shaped regulating port to form six types of gate valves;

[0008] The inlet and outlet channels are equipped with an axial flow check valve seat or a slant check valve seat, an axial flow check valve disc that forms a sealing pair with the axial flow check valve seat, and an axial flow check valve disc cover with a flow guide and valve stem positioning; the slant check valve seat forms a sealing pair with the slant check valve disc, and together with the slant check valve pin and a pair of torsion springs, they form an assembly installed in the valve seat hole of the channel;

[0009] The oblique disc check valve seat has a small-angle conical surface that mates with and seals the valve body's seat bore, and a large-angle conical surface for thrust sealing. The outer circumference of the valve seat has two lugs, each with two pin holes that are axially eccentric (a) and radially eccentric (b) relative to the sealing conical surface. The sealing conical surface of the oblique disc check valve disc matches the sealing conical surface of the valve seat, and the pin holes with the same axial eccentricity (a) and radial eccentricity (b) are positioned on the same plane as the outer diameter envelope of the valve seat, with the same radial eccentricity (b). The valve disc is equipped with two symmetrical torsion springs perpendicular to the pin holes, located between the two sides of the valve disc and the arcuate lugs of the valve seat. The two protruding ends of the torsion springs contact the bottom surface of the valve seat lugs and the bottom surface of the valve disc sides, respectively, allowing the valve disc to automatically reset and seal. The two protruding arcuate lugs on the valve seat and their center position are suitable for the requirements of a triple-eccentric check valve.

[0010] The valve seat of the multi-stage control valve has a small conical surface that seals with the valve seat hole of the valve body. It includes an inlet hole, a sealing conical surface, a sealing outlet hole, first and second valve seat partitions, and end partitions with circumferential holes evenly distributed on their surfaces for the medium to flow out of the valve seat. The valve disc of the multi-stage control valve has an inlet end cylindrical outer diameter surface that mates with the valve seat inlet hole, a sealing conical surface, and a narrow groove between the outer diameter and the sealing conical surface. The inlet end cylindrical surface has two sets of small holes, with the set of small holes near the sealing surface falling within the width of the narrow groove, forming an arc-shaped orifice area. It has a first valve disc spacer ring that mates with the valve seat sealing outlet hole, second and third valve disc spacer rings that mate with the first and second valve seat partitions, and an end spacer ring that mates with the valve seat end partition. The spacing between the valve seat partitions and the valve disc spacer rings is equal. The outer surfaces of the first, second, and third valve disc spacer rings have labyrinth sealing grooves. The first and second valve disc spacer rings... There is a set of deep labyrinthine grooves. The first valve disc partition and the third valve disc partition ring are machined with evenly distributed small straight holes. The second valve disc partition ring is machined with evenly distributed small oblique holes. The valve disc end partition ring is a cylindrical structure with a guide groove on the outer diameter of the cylinder. The width of the guide groove is greater than the diameter of the circumferential hole of the valve seat. There are evenly distributed circumferential holes in the groove. The diameter of the evenly distributed circumferential holes in the groove is smaller than the diameter of the circumferential hole of the valve seat, and the number of them is greater than the number of circumferential holes of the valve seat. There are evenly distributed axial holes on the inner end face of the cylinder, which are fewer in number than the evenly distributed circumferential holes in the groove. The axial holes are connected to the grooves between the third valve disc partition ring and the end partition ring. There is a hole in the middle of the valve disc that mates with the valve stem. There is a pin hole between the second valve disc partition ring and the third valve disc partition ring that connects to the valve stem. The position of the pin hole ensures that when closed, the end of the valve stem contacts the bottom of the middle hole of the valve disc. The valve disc is flexibly connected to the valve stem through the pin, and the valve stem controls the multi-stage regulating valve.

[0011] The gear operating device is characterized by the following features:

[0012] The support rod is connected to the top of the valve body inclined hole by a threaded hole, and the other end of the support rod has a threaded hole. The four equal division connecting holes of the gear box seat have diameters that conform to the ISO 5210 standard, and the connecting holes have two forms, a light hole and a threaded hole. The gear box has a screw through hole for connecting with the gear box seat. For the valve body inclined hole top mounting screw hole that conforms to the ISO 5210 standard, a long screw passes through the gear box, and the gear box seat is connected and fixed with the support rod. For the valve body top four equal division mounting screw hole size that does not conform to the ISO 5210 standard, a transition disc is fixed on the support rod by a screw, the screw passes through the eight equal division bolt holes of the transition disc and is connected with the gear box seat, and the screw passes through the four equal division screw holes of the gear box and the gear box seat to form an integrated gear operating 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 an upper and lower thin type flat needle bearing, the valve stem nut assembly is fixed in the gear box seat by a threaded bearing cover, the gear box body is not subjected to the axial force of the valve stem, the threaded bearing cover is locked by a locking screw, the head of the valve stem nut has a hexagonal surface or a key groove surface for transmitting torque, which cooperates 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 operating 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 that is orthogonally engaged with the spiral bevel disc is provided with medium and heavy type 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 type roller bearings are fixed in the hole of the gear box body, and a part is left for positioning the bearing cover, and the assembly of the spiral gear shaft and the bearing parts is fixed on the gear box body by a screw, a nut and a bearing cover, the bearing cover has four symmetrical non-uniform lock holes with a small angle of 30 degrees, the hole groove of the three-jaw impact block is connected with the key of the spiral gear shaft, the swing angle between the hand wheel with three equal internal claws and the impact block is greater than 30 degrees, and when the impact occurs, a larger instantaneous torque is output by the gear operating mechanism, a locking piece is added on the hand wheel to lock the operating position of the hand wheel, the locking piece has a six equal division center circle diameter that is equal to the diameter of the four lock holes on the bearing cover, and the hand wheel is locked; thus, a spiral bevel gear operating device with one-stage reduction is formed. The bearing cover is connected with a pneumatic or electric driving head in the form of a pneumatic or electric connecting disc;

[0013] 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, 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 a three-jaw impact block and an internal three-jaw impact hand wheel are installed, the planetary gear carrier 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, the planetary carrier seat has two sets of three-equal-division uniformly distributed holes with different center distances, the two sets of holes with different center distances are respectively installed with center wheels 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 matched with the spacer sleeves and are fixed between the planetary carrier seat and the planetary carrier plate, four circular arc grooves with a center distance equal to the threaded holes of the input end of the gear box are processed on the outer circle of the internal gear box, a transition connector with internal and external threads with the same diameter as the diameter of the circular arc groove is connected with the threaded holes of the input end of the gear box, the outer circle of the connector is positioned and prevented from rotating with the circular arc groove of the internal gear box, the planetary reduction box cover, the internal gear box and the complete planetary reduction mechanism are fixed through the connector and the gear box to form a two-stage reduction valve operating device; the planetary reduction box cover is connected with a pneumatic or electric driving head according to the connection form of a pneumatic or electric connecting disc;

[0014] One end of the support rod is connected with the vertical middle hole top mounting screw hole of the valve body by screwing, and the other end of the support rod has a threaded hole; the four-equal-division connecting holes of the gear box seat have diameters 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 has screw passing holes for connecting with the gear box seat; for the valve body vertical middle hole top mounting screw hole in accordance with the ISO 5210 standard, a long screw is passed through the light through holes of the gear box body and the gear box seat, connected with the support rod and fixed; for the valve body vertical middle hole top mounting screw hole not in accordance with the ISO 5210 standard, a bracket is used for transition connection between the valve body and the gear box seat, the hole of the gear box seat is a full-threaded through hole, a screw is passed through the threaded hole of the gear box body and the upper part of the gear box seat to be connected as an integral gear operating device, a bolt is passed through the hole of the bracket and connected with the lower part of the gear box seat by screwing, and a stud and a nut are used to connect and fix the bracket with the valve body vertical middle hole top mounting screw hole; 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 planar needle bearing each on the upper and lower parts, the valve stem nut assembly is fixed in the gear box seat by a threaded bearing cover, the gear box body is not subjected to the axial force of the valve stem, the threaded bearing cover is locked by a lock screw, the head of the valve stem nut 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 gear disc, O-rings at the two heads of the valve stem nut make the operating device sealed, the lower end shaft and the upper end hole of the spiral bevel gear disc are respectively matched and fixed with the inner hollow shaft end of the gear box seat and the gear box body, the spiral gear shaft, which is orthogonally engaged with the spiral gear disc, 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 by spring retainer rings, most of the heavy roller bearings are fixed in the hole of the gear box body, leaving a part for positioning the bearing cover, and the assembly of the spiral gear shaft and the bearing parts is fixed on the gear box body by a screw, a nut and a bearing cover, the bearing cover has four symmetrical non-uniform lock holes with a small angle of 30 degrees, the hole groove of the three-jaw impact block is connected with the key of the spiral gear shaft, the swing angle between the hand wheel with three-equal-division inner jaws and the impact block is greater than 30 degrees, and the impact makes the gear operating mechanism output a larger instantaneous torque, a locking piece is added on the hand wheel to lock the operating position of the hand wheel, the locking piece has a 6-equal-division center graduation circle with a diameter equal to that of the four lock holes on the bearing cover, and the hand wheel is locked; thus, a spiral bevel gear operating device with one-stage reduction is formed; the bearing cover is connected with a pneumatic or electric driving head in the form of a pneumatic or electric connecting disc;

[0015] The planetary reduction spur gear operation device: the gear operation device connected with the support, the connection bolt of the gear box seat and the support of the first stage reduction spiral bevel gear operation device is kept connected, the valve stem nut thin type plane needle bearing threaded bearing cover assembly is kept fixed in the gear box seat, all other parts of the first stage reduction spiral bevel gear operation device are removed; the hexagonal or key groove surface of the planetary carrier seat is loosely matched with the valve stem nut head to transmit torque and single axial positioning, the lower end shaft of the planetary carrier seat is matched with the gear box seat, the lower O-ring in the upper end hole of the planetary carrier seat realizes the static seal of the upper part of the valve stem nut, the upper O-ring in the upper end hole of the planetary carrier seat realizes the dynamic seal of the lower part of the center wheel input shaft, the center hole of the center wheel input shaft passes through the valve stem, the middle part of the center wheel input shaft is provided with a single ball bearing matched with the planetary reduction box cover, the upper part of the center wheel input shaft is provided with a hexagonal or key groove and a thread to install a hand wheel and a hand wheel locking protective sleeve, the planetary carrier seat is provided with two groups of three equal parts or more evenly distributed holes with different center distances, the holes with different center distances are respectively provided with center wheels and planetary gears with different teeth, and two kinds of reduction ratios are realized under the condition that other parts remain unchanged, the planetary carrier plate has two groups of three equal parts or more evenly distributed holes corresponding to the planetary carrier seat, the shoulders of six or more planetary shafts with two end threads are matched with the holes of the planetary carrier seat and the planetary carrier plate, and are fastened and locked by nuts, the planetary gears are matched with the planetary shafts and are fixed between the two gaskets of the planetary carrier seat and the planetary carrier plate, four circular arc grooves with the same center distance as the gear box seat are processed on the outer circle of the internal gear box body, a transition connector with internal and external threads with the same diameter as the circular arc groove is connected with the upper part of the threaded hole of the gear box seat, the outer circle of the connector is positioned and prevented from rotating against the circular arc groove of the internal gear box body, and the planetary reduction box cover, the internal gear box body and the whole planetary reduction mechanism are fixed by the connector and the gear box seat to form a planetary reduction spur gear valve operation device; the driving hand wheel drives the planetary carrier to output low speed and large torque to drive the valve stem nut to move up and down, the axial force of the valve stem is limited in the gear box seat and the threaded bearing cover, and the planetary reduction spur gear valve operation device changes the planetary gears and the center wheels to realize two different reduction ratios. The planetary reduction box cover is connected with the pneumatic or electric connection disc to install the pneumatic or electric driving head;

[0016] The operating device of the large-size dome valve TY gate stop valve 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, a screw passes through the gear box and connects and fastens the upper part of the full thread through hole of the gear box seat, a bracket is connected and fastened with the lower part of the full thread through hole of the gear box seat by bolts, and a stud nut fixes the bracket on the top of the valve body; the nut shaft has coarse threads connected with the valve stem nut and fine threads connected with two locking rings, the different pitch threads connect the valve stem nut and the nut shaft and are locked by the locking rings, the end of the matching part of the coarse threads of the valve stem nut and the nut shaft is provided with a lock screw to form a gap thread, double locking rings and a threaded part locking reliable anti-loosening; when the coarse threads of the nut shaft and the valve stem nut are replaced by keys or splines, the fine threads connected with the two locking rings are still kept, the valve stem nut is fixed on the nut shaft by the two fine thread locking rings, the threads of the valve stem nut are matched with the valve stem, two plane needle bearings are arranged on the upper and lower surfaces of the shaft shoulder of the nut shaft, the plane needle bearings and the valve stem nut shaft are fixed in the gear box seat by the thread cover, the gear box does not bear the axial force of the valve stem, there is a sliding bearing between the nut shaft and the gear box seat, the spiral tooth disc is connected with the key groove taper surface of the nut shaft, the upper and lower ends of the nut shaft are matched with the holes of the gear box and the thread cover and are sealed by upper and lower O-rings, the spiral tooth shaft which is orthogonally engaged with the spiral tooth disc is provided with a light cylindrical roller bearing with inner and outer rings which can bear large radial and axial loads and can bear large radial and axial loads, a spacer sleeve is arranged between the two bearings, the two bearings and the spacer sleeve are axially fixed on the spiral tooth shaft by two spring retainer rings, most of the heavy roller bearing is fixed in the hole of the gear box, the protruding part of the heavy roller bearing is matched with the hole of the transition ring, the lower end of the inner gear box is matched with the outer circle of the transition ring and presses the heavy roller bearing, the upper end of the inner gear box is matched with the cover of the planetary reduction gear box, the planetary reduction mechanism is fixed by 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 provided with a three-jaw impact block and an inner three-jaw impact hand wheel; the planetary carrier for fixing the planetary gears has a combined structure and is composed of a planetary carrier seat, a planetary carrier plate, six pairs of spacer sleeves, screw spring pads, and a locking pad corresponding to two groups of center holes of the planetary carrier seat.The planetary carrier is keyed to the helical gear shaft. The planetary carrier has two sets of evenly distributed holes with different center distances, each set containing a central gear and planetary gears with different numbers of teeth. This achieves two reduction ratios while keeping other components constant. The planetary carrier plate has two sets of threaded holes corresponding to the planetary carrier. Screws secure the planetary carrier to the threaded holes on the planetary carrier plate via six spacers in the middle, with spring washers and locking washers providing double anti-loosening protection. Washers are fitted at both ends of the planetary gears to engage with the spacers, fixing them to the planetary carrier and planetary gear shaft. Between the frame plates, four circular arc grooves with center distances equal to the screw holes at the input end of the gearbox are machined on the outer circle of the inner gearbox. A transition connector with internal and external threads of the same diameter as the circular arc grooves is connected to the screw holes at the input end of the gearbox. The outer circle of the connector is positioned against the circular arc grooves of the inner gearbox to prevent rotation. Screws and nuts fix the planetary gearbox cover, the inner gearbox, and the entire planetary reduction mechanism to the gearbox through the connectors to form a two-stage reduction valve operating device. The planetary gearbox cover is equipped with a pneumatic or electric drive head according to the connection form of a pneumatic or electric connecting plate.

[0017] For the two-stage reduction gear operating device, remove the central wheel, planetary gears, planetary carrier, planetary carrier plate, internal gearbox, planetary gearbox cover, and internal small parts of the planetary reduction device, retaining the helical gear shaft. The bearing cover with four symmetrical, non-uniformly distributed locking holes at adjacent 30-degree angles is fitted with a heavy-duty ball bearing and secured with screws. The slot of the three-jaw impact block is keyed to the helical gear shaft. The handwheel with three equally divided internal claws fits with the helical gear shaft and the three-jaw impact block, exhibiting a swing angle greater than 30 degrees. Upon impact, this causes the gear operating mechanism to output a large instantaneous torque. A locking plate is added to the handwheel to lock its operating position. The locking plate has a center pitch circle diameter of six equal divisions, equal to the diameter of the four locking holes on the bearing cover, thus locking the handwheel and forming a one-stage reduction helical bevel gear operating device. The bearing cover is fitted with a pneumatic or electric drive head according to the connection method of a pneumatic or electric connecting plate.

[0018] For valve bodies with small diameters or large dimensions made of forgings, the operating device is selected according to the actual load, using different types of bevel gears, spur gears, operating devices, or handwheels. The handwheel direction of the bevel gear operating device is adjusted according to the operating requirements.

[0019] Advantages of this utility model:

[0020] The compact TY-type multi-functional combination valve features a compact structure, small installation space, convenient manufacturing, low emissions, and is environmentally friendly. It eliminates the need for welds connecting multiple valves, resulting in a short construction cycle and low costs for weld heat treatment and inspection. The integration of the compact gate valve, globe valve, and check valve into a single unit overcomes the limitations imposed by structural and manufacturing difficulties on production.

[0021] The internal parts and components of TY type valves can be easily processed and installed according to the requirements of the pipeline system, allowing for the combination of dozens of valve types with specific valve functions and valve classes.

[0022] The internal parts and structure of the TY multifunctional combination valve can be used for conventional single Y-type valves to form various Y-type valves with or without check valves, and can also be used for conventional single gate valves to form various single gate valve with or without check valves, double gate valve or parallel double gate valve, and has strong versatility.

[0023] The double gate plate set seal with slight swing is reliable and has high cost performance. The adjustable anti-washing gate valve seat with V-shaped port enables the gate valve to have adjustable function.

[0024] The integrated inclined plate check valve part composed of a valve seat, a valve disc and a pin shaft torsional spring has simple and compact structure and is easy to install, and can form Y-type, straight-through type and clamp type various high-performance inclined plate check valves.

[0025] The multi-stage regulating valve has transition protection function between small flow fine adjustment and large flow adjustment, and the circumferential small holes at the inlet and outlet of the multi-stage regulating valve disc improve noise reduction and erosion resistance.

[0026] The gear operating device series has the characteristics that the valve rod axial force (medium force) does not act on the gear box, the gear box seat is directly connected with the support rod, the input shaft impact hand wheel output torque is large, the hand wheel locking is convenient, and the two sets of fixed hole positions of the planet carrier in the planetary gear reduction device can realize two-stage speed ratio reduction operating devices of different speed ratios by replacing the sun gear and the planet gear.

[0027] The planetary spur gear reduction device has small size and high efficiency, the hand wheel is coaxial with the valve rod, operation is convenient, and different speed ratios can be easily realized. The gear box seat and the valve rod nut of the planetary spur gear and bevel gear operating device can be universal, the valve rod nut has integrated type and combined type, use is convenient, and the cost performance is high. BRIEF DESCRIPTION OF DRAWINGS

[0028] The utility model will be further described below in combination with the drawings and examples.

[0029] Figure 1 It is a TY valve body schematic diagram.

[0030] Figure 2 It is a TY valve body schematic diagram with flange.

[0031] Figure 3 It is a multi-stage regulating valve cylindrical valve seat schematic diagram.

[0032] Figure 4 It is a multi-stage regulating valve disc schematic diagram.

[0033] Figure 5 It is a single gate valve plus needle type stop valve schematic diagram.

[0034] Figure 6 It is a double gate valve plus stop check valve schematic diagram.

[0035] Figure 7 Figure 1 is a schematic diagram of a parallel double disc valve plus stop valve.

[0036] Figure 8 Figure 2 is a schematic diagram of a double disc gate valve plus lift check valve.

[0037] Figure 9 Figure 3 is a schematic diagram of a single disc gate valve plus double bevel flap check valve.

[0038] Figure 10 Figure 4 is a schematic diagram of a single gate valve plus lift check plus axial flow check valve.

[0039] Figure 11 Figure 5 is a schematic diagram of a single disc gate regulating valve plus regulating valve plus bevel flap check valve.

[0040] Figure 12 Figure 6 is a schematic diagram of a parallel double disc regulating gate valve plus noise resistant stop plus bevel flap check valve.

[0041] Figure 13 Figure 7 is a schematic diagram of a double disc gate valve plus ball check valve.

[0042] Figure 14 Figure 8 is a schematic diagram of a counter clamp bevel flap check valve.

[0043] Figure 15 Figure 9 is a schematic diagram of a swing check valve plus bevel flap check valve.

[0044] Figure 16 Figure 10 is a schematic diagram of a straight through double bevel flap check valve.

[0045] Figure 17 Figure 11 is a schematic diagram of a handwheel operated forged body gate stop valve.

[0046] Figure 18 Figure 12 is a schematic diagram of a larger bore supported single gate valve plus noise resistant stop valve.

[0047] Figure 19 Figure 13 is a schematic diagram of a gear operated gate stop valve with transition disc connection.

[0048] Figure 20 Figure 14 is a schematic diagram of a larger bore supported structure planetary spur and bevel gear operated gate stop valve. DETAILED DESCRIPTION

[0049] See Figure 1 , Figure 2A compact TY type gate stop multifunctional combination valve, the inlet and outlet ends of the TY type valve body 1 are coaxial, the axis 001 of the inlet and outlet passage 01, between the inlet and outlet ends, has a first vertical hole 02 perpendicular to the axis 001 and a second hole 03 inclined to the axis 001, the axis of the first vertical hole is 002, the axis of the second inclined hole is 003, 002 and 003 intersect with 001, the angle α between the axis 003 and the axis 001 is in the range of 45°-60°. The vertical hole 02 and the passage 01 have two parallel valve seat holes 012, the inclined hole 03 and the passage 01 have a valve seat hole 013, the upper end of the inclined valve seat hole is the lowest point and the lower end is the highest point, which are within the range of the passage 01, the lower end of the valve seat hole 013 has a concave flow cavity to ensure the flow area; two parallel valve seat holes 012 can be installed (welded or expanded) two parallel or wedge-shaped valve seats, 013 inclined hole can be processed with a body or surfacing sealing surface, or can be processed into a threaded or conical form to install the valve seat; the high point of the straight outer diameter and the inclined outer diameter intersects within the range of the passage outer diameter, the vertical hole and the inclined hole have a shared pressure bearing wall 04 to reduce the length of the valve body; and have their own sealing surface, thread diameter, square or round top, inner cavity hole; the top has evenly distributed mounting screw holes along the axis 002 and 003, when the inclined hole is used for 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 valve disc check valve, or a hole A4 suitable for installing an axial flow check valve, or a through hole without end check valve.

[0050] See Figures 1 to 13, non-body seal replaceable valve seat with thread and taper structure connected with 013 valve seat hole, taper check valve only uses taper to connect valve seat 202, general stop valve or stop valve with anti-noise mesh cover or lifting or spherical check valve uses universal valve seat 2, multi-stage regulating valve uses cylinder valve seat 201. Valve disc that forms sealing pair with valve seat, general stop valve disc 3, taper check valve disc 302, multi-stage regulating valve disc 301, stop check valve and lifting check valve disc 303, needle type stop valve disc 304, ball 310. The head of the valve stem that controls the movement of the valve disc has stop valve stem with hook head 4, stop check valve stem without shoulder 403, regulating valve stem with connecting hole 401, and taper check valve pin shaft 402. Valve cover is divided into hole type valve cover 5 and blind hole type valve cover 501, hole type valve cover 5 is used for stop valve, needle valve, stop check valve and regulating valve; blind hole type valve cover 501 is used for lifting check valve, spherical check valve and taper check valve. Anti-noise mesh cover 6 is used for anti-noise and anti-erosion working conditions, installed in slightly larger inclined inner cavity hole. Sealing ring 7, screw cap 8, 801, packing 9, flange 10, packing sleeve 11, packing plate 12, compression bolt 13, nut 14, indicating block 15 and other parts form valve body sealing and valve stem sealing system 500 with valve body and valve cover. The anti-erosion effect is increased after the anti-noise mesh cover is added to the six types of valves in the inclined hole, including stop valve, needle valve, stop check valve and lifting, taper and spherical check valve.

[0051] See Figures 1 to 13, vertical middle hole, with 012 valve seat hole connection, there are wedge gate valve seat 203 and parallel gate valve seat 204, wedge gate valve seat 207 with V-shaped adjustment port integral hard alloy or sealing surface throttle port welded hard alloy and parallel gate valve seat 208 with V-shaped adjustment port integral hard alloy or sealing surface throttle port welded hard alloy. With wedge gate valve seat 203 or wedge gate valve seat 207 with V-shaped adjustment port sealing pair for single wedge gate plate 305 and wedge left gate plate 306 and wedge right gate plate 307, with parallel gate valve seat 204 or parallel gate valve seat 208 with V-shaped adjustment port sealing pair for parallel left gate plate 308 and parallel right gate plate 309. Wedge left gate plate 306 has vertical integral or split flat round hook, wedge right gate plate 307 has horizontal insertion flat round hook slot, left gate plate 306 is inserted into right gate plate 307 and rotated 90 degrees to form wedge double gate plate group without disengaging but with slight swing. Parallel left gate plate 308 has vertical integral or split flat round hook and spring mounting hole, parallel right gate plate 309 has horizontal insertion flat round hook slot, parallel left gate plate 308 is inserted into parallel right gate plate 309 and rotated 90 degrees to form parallel double gate plate group without disengaging but with slight swing. Single gate plate, double gate plate and parallel double gate plate have the same general size connected with valve stem. Valve stem 404 can control single gate plate or double gate plate or parallel double gate plate. Valve cover is hole type valve cover 502. Sealing ring 71, screw cover 81, packing 91, pressing plate flange 101, packing sleeve 111, packing plate 121, compression bolt 131, nut 141, etc. Parts and valve cover constitute vertical middle hole valve cover sealing and valve stem sealing system 400. Single wedge plate, double wedge plate and double flat plate in vertical hole and through hole and V-shaped adjustment port two kinds of valve seat combination form six kinds of gate valve.

[0052] See Figures 10 to 12 , inlet and outlet passage with axial flow check valve seat (body or insert ring) 206 or inclined flap check valve seat 202, axial flow check valve flap 311 forming sealing pair with axial flow check valve seat 206 (body or insert ring), axial flow check valve flap cover 506 with flow guide cover and valve stem positioning. Inclined flap check valve seat 202 forms sealing pair with inclined flap check valve flap 302, and inclined flap check valve pin shaft 402 and a pair of torsion springs form assembly in the passage seat hole.

[0053] See Figure 9 , Figure 11 , Figure 12 , Figures 14 to 16, 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, the outer circle of the valve seat has two lugs, the two pin shaft holes C on the lugs have axial eccentricity a and radial eccentricity b relative to the sealing taper surface MZ, the sealing taper surface MB of the valve flap 302 of the inclined flap check valve matches 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 have the same radial eccentricity b as the envelope surface of the outer diameter of the valve seat, the pin shaft 402 with the same radial eccentricity b maintains the positions of the valve seat and the valve flap, the valve flap with the butterfly cross section has low flow resistance characteristics, 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 lugs 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. The two arc lugs and the central position on the valve seat can be designed to meet the requirements of the three eccentric check valves. 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-shaped, straight-through and clamping valve bodies (the valve seat can also be welded with straight-through and clamping valve bodies), and form various types of non-penetrating inclined plate check valves with high performance-price ratio.

[0054] See Figures 2 to 4 , Figure 11, the valve seat 201 of the multi-stage regulating valve, the small taper Z201 cooperates with the valve seat hole 012 (013) of the valve body to seal, the inlet hole R201, the sealing taper M201, the sealing surface outlet hole C201, the partition plate G1, G2, the surface of the end partition plate D201 is uniformly distributed with the circumferential hole n201 of the medium outflow valve seat. The valve clapper 301 of the multi-stage regulating valve has the inlet end cylindrical outer diameter surface R301 cooperating with the inlet hole R201 of the valve seat, the sealing taper M301, the narrow groove b301 between the outer diameter R301 and the sealing taper M301, the inlet end cylinder has two groups of small holes e301, the part of the small hole of the group near the sealing surface falls within the width range of the narrow groove to form the arc-shaped small hole area; the partition ring C301 cooperating with the sealing surface outlet hole C201 of the valve seat, the partition ring G11, G22 cooperating with the partition plate G1, G2 of the valve seat, the end partition ring D301 cooperating with the end partition plate D201 of the valve seat, the interval distance between the partition plate of the valve seat and the partition ring of the valve clapper is equal, the outer circular surface of the valve clapper partition ring C301, G11, G22 has a labyrinth sealing groove, there is a group of deep labyrinth grooves between the partition ring C301 and G11, the partition plate C301, G22 is processed with uniformly distributed small straight holes K301, K22, the partition ring G11 is processed with uniformly distributed small inclined holes K11, the end partition ring D301 of the valve clapper 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 circumferential hole n201 of the valve seat, the groove has uniformly distributed 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 has uniformly distributed axial holes z301, which are less 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 clapper has a hole d301 cooperating with the valve rod 401 in the middle, the partition ring G11 and the partition ring G22 of the valve clapper have a pin hole X301 connected with the valve rod 401, the position of the pin hole is guaranteed to contact the end of the valve rod 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.

[0055] Referring to Figures 1 to 13 , different forms of valve seats, gate plates, valve clappers, valve rods, valve covers, and mesh covers are used in the vertical holes and inclined holes, and the combination of the above can realize dozens of different functions. Table 1 shows the partial combination valves and main functions that can be formed in the same valve body.

[0056] Table 1 shows the internal parts composition and main functions of the typical TY type valve body combination valve

[0057]

[0058]

[0059] The valve types and functions listed in Table 1 are only partial combinations, and other function valves can be combined and expanded according to needs; when the outlet end port is equipped with an inclined clapper or an axial flow check valve, the valve type of the combination valve is doubled.

[0060] Referring to Figure 11 , one end of the support rod 16 is connected with the valve body oblique top hole installation screw hole Z, and the other end of the support rod 16 has a threaded hole; the four-equal-division connecting holes of the gear box seat 17 are distributed in accordance with the ISO5210 standard, and the connecting holes are in the form of light through holes and threaded through holes; the gear box body 18 has screw through holes connected with the gear box seat 17. For the valve body oblique top hole installation screw hole in accordance with the ISO5210 standard, the long screw 19 passes through the gear box body 18, and the gear box seat 17 is connected and fixed with the support rod 16. For the valve body top four-equal-division installation screw hole size not in accordance with the ISO5210 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-division bolt hole of the transition disc 20, and the screw 1903 is connected with the four-equal-division screw hole on the gear box seat 1701 through the gear box body 18, so as to be an integrated gear operation 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 an upper and lower thin flat needle bearing 22, 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 set screw, the head of the valve rod nut has a torque transmission hexagonal surface or key groove surface matched with 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 operation 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 orthogonally engaged with the spiral bevel disc 24 is provided with medium and heavy roller bearings, and 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, and a part is left for positioning the bearing cover 27, and the assembly of the spiral gear shaft 26 and the bearing and other parts is fixed on the gear box body 18 by the screw, nut and 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. When the impact occurs, the gear operation mechanism outputs a larger instantaneous torque. The locking piece 30 on the hand wheel 29 can lock the operation position of the hand wheel. The locking piece has a six-equal-division center graduation circle diameter equal to the diameter of the four lock holes on the bearing cover 27, so as to realize the locking of the hand wheel. The parts 17 to 30 described in this section constitute a first-stage reduction spiral bevel gear operation device 100. The bearing cover 27 can be connected with a pneumatic or electric drive head in the form of a pneumatic or electric connection disc.

[0061] Referring to Figures 5 to 7 , Figure 12 , Figure 19For 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 the inner gear box 31, the two ends of the box 31 are matched with heavy roller bearing 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 inner 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 the locking nuts. The planetary gear 35 is 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 input end screw hole of the gear box 18 can be machined on the outer circle of the inner gear box 31. The transition connector 39 with the same diameter as the circular arc groove and with inner and outer threads is connected with the input end screw 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 inner gear box 31. The planetary reduction box cover 33, the inner gear box 31 and the whole planetary reduction mechanism are fixed with the gear box 18 through the connector 39 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.

[0062] Referring to Figures 5 to 13, one end of the support rod 161 is connected with the valve body vertical hole top (hereinafter referred to as the valve body straight top) mounting screw hole, the other end of the support rod 161 has a threaded hole; the four equal division connecting hole of the gear box seat 171 is distributed in accordance with the ISO 5210 standard, the connecting hole is in the form of light hole and threaded hole, the gear box body 181 has a screw through hole connected with the gear box seat 171. For the valve body straight top mounting screw hole in accordance with the ISO 5210 standard, the long screw 1910 passes through the gear box body 1801, the light hole of the gear box seat 171 is connected with the support rod 161 and fixed. For the valve body straight top mounting screw hole not in accordance with the ISO 5210 standard, the bracket 2002 is used for transition connection between the valve body and the gear box seat 171, the hole of the gear box seat is a full threaded hole, the screw 1911 passes through the gear box body 1801 and is connected with the upper threaded hole of the gear box seat 171 to form an integral gear operation device, the bolt 1912 passes through the hole of the bracket 2002 and is connected with the lower threaded hole of the gear box seat 171, the stud 1913 and the nut 1914 connect and fix the bracket 2002 with the valve body straight top mounting screw hole. The axial force of the valve stem 404 is transmitted to the valve stem nut 2101, the shaft shoulder of the valve stem nut 2101 is provided with an upper and lower thin type flat needle bearing 2201, the valve stem nut assembly is fixed in the gear box seat 171 by the threaded bearing cover 2301, so that 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 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 2401, the O ring at the two ends of the valve stem nut makes the operation device sealed, the lower end shaft and the upper end hole of the spiral bevel disc 2401 are respectively matched and fixed with the inner hollow shaft end of the gear box seat 171 and the gear box body 1801, the spiral gear shaft 2601, which is orthogonally engaged with the spiral bevel disc 2401, is provided with a medium type and a heavy type roller bearing, there is a spacer between the two bearings, the bearings and the spacer are axially fixed on the spiral gear shaft 2601 by the spring retainer, most of the heavy type roller bearing 3201 is fixed in the hole of the gear box body 1801, leaving a part for positioning the bearing cover 2701, and the spiral gear shaft 2601 and the bearing assembly are fixed on the gear box body 1801 by the screw, the nut and the bearing cover 2701, the bearing cover 2701 has four symmetrical non-uniform lock holes with a small angle of 30 degrees, the hole groove of the three jaw impact block 2801 is keyed connected with the spiral gear shaft 2601, the swing angle between the hand wheel 2901 with three equal internal claws and the impact block is greater than 30 degrees, when impacting, the gear operation mechanism outputs a larger instantaneous torque, the locking piece 30 on the hand wheel 2901 can lock the operating position of the hand wheel, the locking piece has a six equal division center graduation circle diameter equal to the diameter of the four lock holes on the bearing cover 2701, realizing the locking of the hand wheel. The parts described in this section constitute a spiral bevel gear operation device 1000 with one stage reduction. The bearing cover 2701 can be connected with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate.

[0063] See Figure 20Further, when spur gear operation is required, the gear operation device connected with the bracket 2002 is kept connected with the connecting bolt 1912 of the gear box seat 171 of the first-stage reduction spiral bevel gear operation device 1000 (hereinafter referred to as operation device 1000), the valve stem nut 2101 thin-type flat needle bearing 2201 threaded bearing cover 2301 assembly is kept fixed in the gear box seat 171, and all other parts of the operation device 1000 are removed. The hexagonal or keyway surface of the planet carrier seat 3601 is loosely matched with the head of the valve stem nut 2101 to transmit torque and single-axial positioning, the lower end shaft of the planet carrier seat 3601 is matched with the gear box seat 171, the lower O-ring in the upper end hole of the planet carrier seat 3601 realizes static sealing of the upper part of the valve stem nut 2101, the upper O-ring in the upper end hole of the planet carrier seat 3601 realizes dynamic sealing of the lower part of the sun gear input shaft 3401, the middle hole of the sun gear input shaft 3401 can pass through the valve stem, the sun gear input shaft 3401 is provided with a single ball bearing at the middle part to match with the planet reduction box cover 3301, the upper part of the sun gear input shaft 3401 is provided with a hexagonal or keyway and a thread to install the hand wheel 2910 and the hand wheel locking protective sleeve 2911, the planet carrier seat 3601 is provided with two sets of three-equal-part (or more) uniformly distributed holes with different center distances, and the two sets of holes with different center distances can be respectively provided with sun gears and planet gears with different numbers of teeth, so that two kinds of reduction ratios are realized under the condition that other parts remain unchanged, the planet carrier plate 3701 is provided with two sets of three-equal-part (or more) uniformly distributed holes corresponding to the planet carrier seat 3601, the shoulder shafts of six (or more) planet shafts 3801 provided with two-end threads are matched with the holes of the planet carrier seat 3601 and the planet carrier plate 3701, and are fastened and locked by nuts, the planet gears 3501 are matched with the planet shafts 3801 and are fixed between the planet carrier seat 3601 and the planet carrier plate 3701, the outer circle of the inner gear box body 3101 is provided with four circular arc grooves with a center distance equal to that of the gear box seat 171, the transition connector 3901 with internal and external threads and with a diameter same as that of the circular arc grooves is connected with the upper part of the threaded through hole of the gear box seat 171, the outer circle of the connector is positioned and prevented from rotating relative to the circular arc grooves of the inner gear box body 3101, and the planet reduction box cover 3301, the inner gear box body 3101 and the whole planet reduction mechanism are fixed and connected with the gear box seat 171 through the connector 3901 to form the planet reduction spur gear valve operation device 2000 (hereinafter referred to as operation device 2000). The planet carrier frame assembly of the operation device 2000 is connected by six (or more) bolts, has good rigidity, and the sun gear and the planet carrier can float and be uniformly loaded, the driving hand wheel 2910 drives the planet carrier to output low-speed large torque to drive the valve stem nut 2101 to move the valve stem 404 up and down, the axial force of the valve stem is limited in the gear box seat 171 and the threaded bearing cover 2301, the structure of the operation device 2000 is small and has high bearing capacity, and different reduction ratios can be realized by replacing the planet gears and the sun gears. The planet reduction box cover 3301 can be connected with a pneumatic or electric driving head according to the connection mode of the pneumatic or electric connection disc.

[0064] Referring to Figure 20For large size TY type globe valve, the operating device 600 has a circular gear box 1802 and a gear box seat 1702 with a full thread through hole in accordance with the ISO 5210 standard indexing size, a screw 1904 passing through the gear box 1802 and the upper part of the gear box seat full thread through hole is connected and fastened, a bracket 2001 is connected and fastened with the lower part of the gear box seat full thread through hole by a bolt 1905, and a stud 1906 nut 1907 fixes the bracket 2001 on the top of the valve body. The nut shaft 211 has coarse threads connected with the valve stem nut 212 and fine threads connected with two locking rings 213, the different pitch threads connect the valve stem nut and the nut shaft and are locked by the locking rings, the end of the matching part of the valve stem nut and the nut shaft coarse threads has a locking screw 214 composed of a gap thread, double ring locking and a threaded part locking reliable anti-loose; when the coarse threads of the nut shaft 211 and the valve stem nut 212 are replaced by keys or splines, the fine threads connected with the two locking rings 213 are still maintained, and the valve stem nut 212 is fixed on the nut shaft 211 by the two fine thread locking rings 213, the threads of the valve stem nut 212 match the valve stem, two plane needle bearings 221 are installed on the upper and lower surfaces of the shaft shoulder of the nut shaft 211, the plane needle bearings and the valve stem nut shaft are fixed in the gear box seat 1702 by a threaded cover 231, the gear box 1802 does not bear the axial force of the valve stem, there is a sliding bearing 215 between the nut shaft 211 and the gear box seat 1702, a helical tooth disc 241 is connected with the key groove taper surface of the nut shaft 211, the upper and lower ends of the nut shaft 211 are respectively matched with the holes of the gear box 1802 and the threaded cover 231 and have upper and lower O-ring seals, the helical tooth shaft 261 which is orthogonal meshed with the helical tooth disc 241 is provided with a light cylindrical roller bearing 3211 with large radial bearing capacity and inner and outer ring axial limit and a heavy roller bearing 3210 which can bear radial and axial heavy load, there is a spacer sleeve between the two bearings, the two bearings and the spacer sleeve are axially fixed on the helical tooth shaft 261 by two spring retainer rings, most of the heavy roller bearing 3210 is fixed in the hole of the gear box 1802, the protruding part of the heavy roller bearing 3210 is matched with the hole of the transition ring 3212, the lower end of the inner gear box 3101 is matched with the outer circle of the transition ring 3212 and compresses the heavy roller bearing 3210, the upper end of the inner gear box 3101 is matched with the planetary reduction gear cover 331, the planetary reduction mechanism is fixed by screws, nuts and four equal division connecting holes of the input end of the gear box 1802, the head of the sun gear input shaft 341 of the planetary reduction mechanism is provided with a three-jaw impact block 281 and an inner three-jaw impact hand wheel 291. The planet carrier for fixing the planet gears 351 is a combined structure composed of a planet carrier seat 361, a planet carrier plate 371, 6 pairs of spacer sleeves 381 and a screw spring washer, and a locking washer corresponding to the two center holes of the planet carrier seat.The planetary carrier seat 361 is keyed to the spiral tooth shaft 261, and has two sets of three-equalized uniformly distributed holes with different center distances. The two sets of holes with different center distances can respectively install the sun gear and the planetary gear with different number of teeth. In the case that other parts are unchanged, two kinds of reduction ratios are realized. The planetary carrier plate 371 has two sets of three-equalized threaded holes corresponding to the planetary carrier seat 361. Screws fasten the planetary carrier seat 361, pass through the intermediate six spacer sleeves 381, and are fastened to the threaded holes on the planetary carrier plate 371, and are double-locked by spring pads and locking pads. The planetary gears 351 are fixed between the planetary carrier seat 361 and the planetary carrier plate 371 by being equipped with spacers and cooperating with the spacer sleeves 381 at two ends. The outer circle of the ring gear box body 311 can be machined four circular arc grooves with a center distance equal to the input end threaded hole of the gear box body 1802. The transition connector 391 with inner and outer threads with the same diameter as the circular arc groove is connected with the input end threaded hole of the gear box body 1802. The outer circle of the connector is positioned and prevented from rotating with the circular arc groove of the ring gear box body 311. The screws and nuts fasten the planetary reduction box cover 331, the ring gear box body 311, and the whole planetary reduction mechanism to the gear box body 1802 through the connector 391, and form the two-stage reduction valve operating device 600. The planetary reduction box cover 331 can be equipped with a pneumatic or electric driving head according to the connection form of the pneumatic or electric connection disc.

[0065] Referring to Figure 18 Further, the two-stage reduction gear operating device 600 is removed from the planetary reduction device, and the sun gear, the planetary gear, the planetary carrier seat, the planetary carrier plate, the ring gear box body, the planetary reduction box cover and the internal small parts are retained. The spiral tooth shaft 261 is fastened with the bearing cover 271 with four symmetrically non-uniform locking holes with a small angle of 30 degrees and cooperates with the heavy ball bearing. The hole groove of the three-jaw impact block 281 is keyed to the spiral tooth shaft 261. The hand wheel 291 with three-equalized internal claws (the hand wheel can be cast or welded) cooperates with the spiral tooth shaft and the three-jaw impact block and has a swing angle greater than 30 degrees. When impacting, the gear operating mechanism outputs a larger instantaneous torque. The locking piece 30 on the hand wheel 291 can lock the operating position of the hand wheel. The locking piece has a six-equalized center circle diameter equal to the diameter of the four locking holes on the bearing cover 271, realizes hand wheel locking, forms a gear box with an input impact, a hand wheel that can be locked, a valve rod nut that can be replaced, and a gear box and a support that share the same gear box seat thread. The gear box does not bear the axial force of the valve rod. The spiral bevel gear operating device 300 of the first-stage reduction. The bearing cover 271 can be equipped with a pneumatic or electric driving head according to the connection form of the pneumatic or electric connection disc.

[0066] Referring to Figures 5 to 13 , Figures 17 to 20For the small-bore or large-size valve body D1 using forgings, the internal structure and principle of the straight-hole sealing and operating system 700 and the inclined-hole sealing and operating system 800 are the same as above, and the operating device is selected according to the actual load to select the different forms of bevel gears or spur gears or operating devices or hand wheels, and the hand wheel direction of the bevel gear operating device is adjusted according to the operating requirement.

[0067] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make slight modifications or changes to the equivalent embodiments within the scope of the technical scheme of the present application without departing from the technical scheme of the present application. Any simple modification, equivalent replacement, improvement, etc. of the above embodiments within the scope of the technical scheme of the present application, the spirit and principles of the present application, and the protection scope of the present application.

Claims

1. A compact TY type gate stop multifunction combination valve, characterized by: The inlet and outlet ends of the TY type valve body (1) are coaxial, and between the inlet and outlet ends are a first vertical middle hole (02) perpendicular to the axis (001) of the inlet and outlet passage (01) and a second inclined middle hole (03) inclined to the axis (001); the axis (002) of the first vertical middle hole and the axis (003) of the second inclined middle hole intersect with the axis (001) of the inlet and outlet passage (01); the first vertical middle hole (02) and the inlet and outlet passage (01) have two parallel valve seat holes (012), 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), and the lower end of the valve seat hole (013) has a concave flow cavity to ensure the flow area; the two parallel valve seat holes (012) are provided with two parallel or wedge-shaped valve seats, and the valve seat hole (013) has a sealing surface processed by the body or surfacing, or is processed into a threaded or conical form installation valve seat; the high point of the straight outer diameter and the inclined outer diameter is within the range of the passage outer diameter, the first vertical middle hole (02) and the second inclined middle hole (03) have a shared pressure-bearing wall (04), which reduces the length of the valve body, and each has a sealing surface, a threaded diameter, a square or circular top, and an inner cavity hole; 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 an end check valve; The non-body sealable valve seat connected with the valve seat hole (013) in the inclined middle hole has two structures of threads and conical surfaces, the inclined disc check valve only uses a conical surface to connect the valve seat (202), the general stop valve or the lift type or spherical check valve uses a universal valve seat (2), and the multi-stage regulating valve uses a cylinder valve seat (201); the disc valve, the inclined disc check valve disc valve (302), the multi-stage regulating valve disc valve (301), the stop check valve and the lift type check valve disc valve (303), the needle type stop valve disc valve (304), and the ball (310) are provided with the disc valve, the inclined disc check valve disc valve (302), the multi-stage regulating valve disc valve (301), the stop check valve and the lift type check valve disc valve (303), the needle type stop valve disc valve (304), and the ball (310); the head of the valve stem for controlling the movement of the disc valve has a stop valve stem (4) with a hook, a stop check valve stem (403) without a shoulder on the head, a regulating valve stem (401) with a connecting hole on the head, and an inclined disc check valve pin shaft (402); the valve cover is divided into 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 lift type check valves, spherical check valves and inclined disc check valves; the sealing ring (7), the screw cover (8, 801), the packing (9), the flange (10), the packing sleeve (11), the packing plate (12), the compression bolt (13), the nut (14), and the indicating block (15) are parts of the inclined middle hole valve body sealing and valve stem sealing system (500) together with the valve body and the valve cover. In the vertical middle hole, there are wedge gate valve seat (203) and parallel gate valve seat (204) connected with valve seat hole (012), wedge gate valve seat (207) with V-shaped regulating port integral hard alloy or sealing surface throttling port welded hard alloy, and parallel gate valve seat (208) with V-shaped regulating port integral hard alloy or sealing surface throttling port welded hard alloy; single wedge plate (305) and wedge left plate (306) and wedge right plate (307) form sealing pair with wedge gate valve seat (203) or wedge gate valve seat (207) with V-shaped regulating port; parallel left plate (308) and parallel right plate (309) form sealing pair with parallel gate valve seat (204) or parallel gate valve seat (208) with V-shaped regulating port; wedge left plate (306) has vertical integral or split flat round hook head, wedge right plate (307) has transversely inserted flat round hook slot, wedge left plate (306) is inserted into wedge right plate (307) and rotated by 90 degrees to form wedge double plate group which does not disengage but has slight swing; parallel left plate (308) has vertical integral or split flat round hook head and spring mounting hole, parallel right plate (309) has transversely inserted flat round hook slot, parallel left plate (308) is inserted into parallel right plate (309) and rotated by 90 degrees to form parallel double plate group which does not disengage but has slight swing; single plate, double plate and parallel double plate have same general size connected with valve stem; valve stem (404) controls single plate, double plate or parallel double plate; valve cover is hole type valve cover (502); sealing ring (71), screw cover (81), packing (91), pressing plate flange (101), packing pressing sleeve (111), packing pressing plate (121), pressing bolt (131) and nut (141) parts form vertical middle hole valve body sealing and valve stem sealing system (400) with valve body and valve cover; single wedge plate, double wedge plate and double parallel plate in vertical hole form six types of gate valves combined with through hole and V-shaped regulating port; Inlet and outlet passage is provided with axial flow check valve seat (206) or inclined flap check valve seat (202), axial flow check valve flap which forms sealing pair with axial flow check valve seat (206), and axial flow check valve flap cover (506) with guide cover and valve stem positioning; inclined flap check valve seat (202) forms sealing pair with inclined flap check valve flap (302), and forms assembly with inclined flap check valve pin shaft (402) and a pair of torsion springs in the valve seat hole of the passage; The valve seat (202) of the inclined flap check valve has a small-angle taper surface matched with the valve seat hole of the valve body and a large-angle taper surface for thrust sealing, and two lugs are arranged on the outer circle of the valve seat, and two pin hole are arranged on the lugs and have axial eccentricity a and radial eccentricity b relative to the sealing taper surface; the sealing taper surface of the valve flap (302) of the inclined flap check valve is matched with the sealing taper surface of the valve seat, and the position of the pin hole with the same axial eccentricity a and radial eccentricity b is the same as the envelope surface of the outer diameter of the valve seat and has the same radial eccentricity b; the valve flap is provided with two side-symmetrical torsion springs perpendicular to the pin hole, which are arranged between the two side surfaces of the valve flap and the arc lugs of the valve seat, and the two extending ends of the torsion springs are in contact with the bottom surface of the lugs 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; the two arc lugs and the central position of the valve seat meet the requirements of the three-eccentric check valve; The valve seat (201) of the multi-stage regulating valve has a small taper surface matched with the valve seat hole (012) (013) of the valve body for sealing, an inlet hole, a sealing taper surface, a sealing surface, an outlet hole, first and second valve seat partitions, and a surface of an end partition, which are uniformly provided with circumferential holes for the medium to flow out of the valve seat; the valve flap (301) of the multi-stage regulating valve has an inlet end cylindrical outer diameter surface matched with the inlet hole of the valve seat, 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, and an arc-shaped small hole area formed by the small holes near the sealing surface falling within the width range of the narrow groove; the valve flap has a first valve flap partition matched with the outlet hole of the sealing surface of the valve seat, second and third valve flap partitions matched with the first and second valve seat partitions, and an end partition matched with the end partition of the valve seat, the distance between the valve seat partitions and the valve flap partitions is equal, the outer surface of the first valve flap partition, the second valve flap partition and the third valve flap partition is provided with a labyrinth sealing groove, there is a group of deep labyrinth grooves between the first valve flap partition and the second valve flap partition, the first valve flap partition and the third valve flap partition are provided with uniformly distributed small straight holes, the second valve flap partition is provided with uniformly distributed small inclined holes, the end partition of the valve flap is in the form of a cylinder, the outer diameter of the cylinder is provided with a flow guide groove, the groove width of the flow guide groove is greater than the diameter of the circumferential holes of the valve seat, the groove is uniformly provided with circumferential holes, the diameter of the circumferential holes in the groove is smaller than the diameter of the circumferential holes of the valve seat, and the number of the circumferential holes in the groove is greater than that of the circumferential holes of the valve seat; the inner end surface of the cylinder is uniformly provided with axial holes, the number of which is less than that of the circumferential holes in the groove, and the axial holes are in communication with the groove between the third valve flap partition and the end partition; the valve flap is provided with a hole matched with the valve rod (401), and the second valve flap partition and the third valve flap partition of the valve flap are provided with 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 valve flap when the valve is closed, the valve flap (301) is connected with the valve rod (401) through the pin (407), and the valve rod controls the multi-stage regulating valve.

2. A compact TY type gate stop multifunction combination valve according to claim 1, characterized in that: The gear operating device is characterized by the following: The support rod (16) is connected with the top mounting screw hole of the valve body inclined middle hole by screwing, and the other end of the support rod (16) has a threaded hole; the four-equal-division 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 screw passing hole connected with the gear box seat (17); for the valve body inclined middle hole 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 on 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 piece of thin flat needle bearing (22) upward and downward, 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, which is matched with 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 orthogonally engaged with the spiral bevel disc (24) 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 (26) by the spring retainer, most of the heavy roller bearing (32) is fixed in the hole of the gear box body (18), and the remaining part is used 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 hand wheel (29) with three-equal-division inner claws and the impact block is greater than 30 degrees, and when the impact occurs, the gear operating mechanism outputs a larger instantaneous torque, the locking piece (30) is added on the hand wheel (29) to lock the operating position of the hand wheel, the locking piece has a six-equal-division center graduation circle diameter which is equal to the diameter of the four lock holes on the bearing cover (27), and the hand wheel locking is realized; thus, a first-stage reduction spiral bevel gear operating device (100) is formed; the bearing cover (27) is connected with a pneumatic or electric driving head in the form of a pneumatic or electric connecting disc. For the secondary transmission operation device of large output torque, the inner gear box (31) is adopted, the two ends of the box (31) are matched with heavy roller bearing (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 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 inner three-jaw impact hand wheel (29) are installed, 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 sets of three-equal division uniformly distributed holes with different center distances, two sets of holes with different center distances are respectively installed with center wheels and planetary gears with different teeth, and two kinds of reduction ratios are realized under the condition that other parts remain unchanged, the planetary carrier plate (37) has two sets of three-equal division threaded holes corresponding to the planetary carrier seat (36), the planetary carrier seat (36) is fastened to 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) are processed on the outer circle of the inner gear box (31), the transition connector (39) with the same diameter as the circular arc groove and with inner and outer 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 on the circular arc groove of the inner gear box (31), the planetary reduction box cover (33), the inner gear box (31) and the whole planetary reduction mechanism are fixed with the gear box (18) through the connector (39) to form the secondary reduction valve operation device (200); the planetary reduction box cover (33) is connected with the pneumatic or electric drive head according to the connection form of the pneumatic or electric connection disc; One end of the support rod (161) is connected with the vertical hole of the valve body by screwing, and the other end of the support rod (161) has a threaded hole; the four equidistant connecting holes of the gear box seat (171) are distributed in accordance with the ISO 5210 standard, and the connecting holes are in the form of light holes and threaded holes, and the gear box (181) has a screw passing hole connected with the gear box seat (171); for the valve body vertical hole top mounting screw hole conforming to the ISO 5210 standard, the long screw (1910) is connected and fixed with the support rod (161) by passing through the light hole of the gear box (1801) and the gear box seat (171); for the valve body vertical hole top mounting screw hole not conforming to the ISO 5210 standard, a bracket (2002) is used for transition connection between the valve body and the gear box seat (171), the hole of the gear box seat is a full threaded hole, the screw (1911) is connected into an integral gear operating device by passing through the threaded hole of the gear box (1801) and the upper part of the gear box seat (171), the bolt (1912) is connected with the lower threaded part of the gear box seat (171) by passing through the hole of the bracket (2002), and the stud (1913) and the nut (1914) connect and fix the bracket (2002) with the valve body vertical hole top mounting screw hole;The axial force of the valve stem (404) is transmitted to the valve stem nut (2101), the shaft shoulder of the valve stem nut (2101) is equipped with one thin flat needle bearing (2201) above and below, the valve stem nut assembly is fixed in the gear box seat (171) by the threaded bearing cover (2301), so that the gear box body does not bear the axial force of the valve stem, the threaded bearing cover is locked by a set screw, the head of the valve stem nut has a hexagonal surface or a key groove surface for transmitting torque, which cooperates with the hexagonal or key groove surface of the spiral bevel gear (2401), the O-ring at the two ends of the valve stem nut seals the operating device, the lower end shaft of the spiral bevel gear (2401) and the upper end hole are respectively matched and fixed with the inner hollow shaft end of the gear box seat (171) and the gear box body (1801), the spiral tooth shaft (2601) orthogonally engaged with the spiral bevel gear (2401) is equipped 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 tooth shaft (2601) by spring retainer rings, most of the heavy roller bearing (3201) is fixed in the hole of the gear box body (1801), leaving a part to position the bearing cover (2701), and the spiral tooth shaft (2601) and the bearing assembly are fixed on the gear box body (1801) by screws, nuts and bearing covers (2701), the bearing cover (2701) has four symmetrically non-uniform lock holes with a small angle of 30 degrees, the hole groove of the three-jaw impact block (2801) is key connected with the spiral tooth shaft (2601), the swing angle between the hand wheel (2901) with three equal internal claws and the impact block is greater than 30 degrees, which generates a larger instantaneous torque when impacting, the locking piece (30) is added on the hand wheel (2901) to lock the operating position of the hand wheel, the locking piece has a 6-part central division circle with a diameter equal to that of the four lock holes on the bearing cover (2701), realizing the locking of the hand wheel; thus, a spiral bevel gear operating device (1000) with one-stage reduction is formed; the bearing cover (2701) is connected to a pneumatic or electric drive head in the form of a pneumatic or electric connecting disc; Planetary reduction spur gear valve operating device: the gear operating device connected with the support (2002), the connection bolt (1912) of the gear box seat (171) of the first reduction spiral bevel gear operating device (1000) and the support (2002) is kept connected, the valve stem nut (2101) thin type plane needle bearing (2201) threaded bearing cover (2301) assembly is kept fixed in the gear box seat (171), all other parts of the first reduction spiral bevel gear operating device (1000) are removed; the hexagonal or key groove surface of the planet carrier seat (3601) is loosely matched with the head of the valve stem nut (2101) to transmit torque and single axial positioning, the lower end shaft of the planet carrier seat (3601) is matched with the gear box seat (171), the lower O-ring in the upper end hole of the planet carrier seat (3601) realizes the static seal of the upper part of the valve stem nut (2101), the upper O-ring in the upper end hole of the planet carrier seat (3601) realizes the dynamic seal of the lower part of the sun gear input shaft (3401), the middle hole of the sun gear input shaft (3401) passes through the valve stem, a single ball bearing is arranged on the middle part of the sun gear input shaft (3401) and matched with the planetary reduction box cover (3301), the upper part of the sun gear input shaft (3401) is provided with a hexagonal or key groove and a thread to install a hand wheel (2910) and a hand wheel locking protective sleeve (2911), the planet carrier seat (3601) is provided with two groups of three equal parts or more evenly distributed holes with different center distances, the holes with different center distances are respectively matched with sun gears and planetary gears with different numbers of teeth, two kinds of reduction ratios are realized under the condition that other parts remain unchanged, the planet carrier plate (3701) is provided with two groups of three equal parts or more evenly distributed holes corresponding to the planet carrier seat (3601), the shoulders of six or more planet shafts (3801) with two end threads are matched with the holes of the planet carrier seat (3601) and the planet carrier plate (3701) and fastened and locked by nuts, the planetary gears (3501) are matched with the planet shafts (3801) and fixed between the planet carrier seat (3601) and the planet carrier plate (3701) and two gaskets, four circular arc grooves with the same center distance as the gear box seat (171) are processed on the outer circle of the internal gear box body (3101), a transition connector (3901) with internal and external threads with the same diameter as the diameter of the circular arc groove is connected with the upper part of the threaded through hole of the gear box seat (171), the outer circle of the connector is positioned and prevented from rotating relative to the circular arc groove of the internal gear box body (3101), and screws fix the planetary reduction box cover (3301), the internal gear box body (3101) and the whole planetary reduction mechanism through the connector (3901) and the gear box seat (171) to form a planetary reduction spur gear valve operating device (2000); driving the hand wheel (2910) makes the planet carrier output low speed and large torque to drive the valve stem nut (2101) to make the valve stem (404) move up and down, the axial force of the valve stem is limited in the gear box seat (171) and the threaded bearing cover (2301), the planetary reduction spur gear valve operating device (2000) changes the planetary gears and the sun gears to realize two different reduction ratios; the planetary reduction box cover (3301) is connected with a pneumatic or electric driving head in the form of a pneumatic or electric connection disc; The operating device (600) of the large-size dome valve TY type gate stop 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 an indexing size conforming to ISO 5210 standard, a screw (1904) passes through 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 (2001) 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 (2001) on the top of the valve body.The planet carrier of the fixed planet wheel (351) is a combined structure, which is composed of a planet carrier seat (361), a planet carrier plate (371), six spacer sleeves (381), a screw spring washer, and a locking washer corresponding to two sets of center holes of the planet carrier seat; the planet carrier seat (361) is keyed to the spiral tooth shaft (261), and has two sets of three-equal-distribution holes with different center distances on the planet carrier seat (361); the two sets of holes with different center distances are respectively provided with a sun gear and a planet wheel with different numbers of teeth; in the case that other parts remain unchanged, two kinds of speed reduction ratios are realized; the planet carrier plate (371) has two sets of three-equal-distribution threaded holes corresponding to the planet carrier seat (361); the planet carrier seat (361) is fastened to the threaded holes on the planet carrier plate (371) through the six spacer sleeves (381) in the middle, and is double-lubed by the spring washer and the locking washer; the planet wheel (351) is fixed between the planet carrier seat (361) and the planet carrier plate (371) by being provided with washers and spacer sleeves (381) at both ends; four circular arc grooves with a center distance equal to the threaded hole of the input end of the gear box (1802) are machined on the outer circle of the inner gear box (3101); a transition connector (391) with inner and outer threads with the same diameter as the circular arc groove is connected to the threaded hole of the input end of the gear box (1802); the outer circle of the connector is positioned and prevented from rotating on the circular arc groove of the inner gear box (3101); the planet reduction box cover (331), the inner gear box (3101), and the whole set of planet reduction mechanism are fixed to the gear box (1802) through the connector (391) by a screw nut, thereby forming a two-stage speed reduction valve operating device (600); the planet reduction box cover (331) is connected to a pneumatic or electric driving head according to the connection mode of the pneumatic or electric connection disc. For the secondary reduction gear operation device (600), the spiral tooth shaft (261) is adopted, the bearing cover (271) with four symmetrically non-uniform locking holes with a small angle of 30 degrees is matched with the heavy ball bearing and fastened with screws, the hole groove of the three-jaw impact block (281) is keyed with the spiral tooth shaft (261), the hand wheel (291) with three-equal division inner claws is matched with the spiral tooth shaft and the three-jaw impact block and has a swing angle greater than 30 degrees, when impacting, the gear operation mechanism outputs a larger instantaneous torque, the locking piece (30) added on the hand wheel (291) can lock the hand wheel operation position, the locking piece has a six-equal division center circle diameter which is equal to the diameter of the four locking holes on the bearing cover (271), the hand wheel locking is realized, and the primary reduction spiral bevel gear operation device (300) is formed; the bearing cover (271) is connected with the pneumatic or electric drive head according to the connection form of the pneumatic or electric connection disc.

3. A compact TY type gate stop multifunction combination valve according to claim 1 or 2, characterized in that: For small diameter or large size valve body using forgings, the operation device selects different forms of bevel gears or spur gears or operation devices or hand wheels according to the actual load.

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