Compact TY-type brake cut-off multifunctional combination valve

Abstract

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 environmentally friendly.

Description

Technical Field

[0001] The present invention belongs to the field of valve manufacturing, and particularly relates to a combined valve of a gate valve, a globe valve, and a check valve with regulating function for a TY-type valve body and an operating device. Background Art

[0002] Existing gate valves, Y-type globe valves, and check valves are in the form of single valves and cannot meet the requirements of integrating multiple functions and having multiple seals for harsh working conditions. Welding two or more valves has the disadvantages of many welds, large installation space, long construction period, high cost of weld heat treatment and non-destructive inspection. A single gate valve cannot be adjusted, and there is no valve that combines a gate valve, a globe valve, a regulating valve, and a check valve. Summary of the Invention

[0003] The purpose of the present invention is to provide a compact TY-type gate globe multi-functional combined valve with a compact structure, small installation space, convenient manufacturing, less emissions, and environmental friendliness.

[0004] The technical solution of the present invention is as follows:

[0005] A compact TY-type gate globe multi-functional combined valve, characterized in that: the inlet and outlet ends of the TY-type valve body are coaxial. There is a first vertical middle hole perpendicular to the axis of the inlet and outlet channels and a second inclined middle hole inclined to the axis between the inlet and outlet ends. The axes of the first vertical middle hole and the second inclined middle hole intersect with the axis of the inlet and outlet channels. The included angle α between the axis of the second inclined middle hole and the axis of the inlet and outlet channels ranges from 45° to 60°. The first vertical middle hole and the inlet and outlet channels are intersected with two parallel valve seat holes. The second inclined middle hole has a valve seat hole intersecting with the inlet and outlet channels. The lowest point at the upper end and the highest point at the lower end of the inclined valve seat hole are both within the range of the inlet and outlet channels. There is a concave flow cavity at the lower end of the valve seat hole to ensure the flow area. Two parallel valve seat holes are provided with two parallel or wedge-shaped valve seats. The valve seat holes have sealing surfaces processed by the method of using the body or surfacing, or are processed into threaded or tapered surfaces for installing the valve seats. The high point where the straight outer diameter and the inclined outer diameter are connected is within the range of the channel outer diameter. The first vertical middle hole and the second inclined middle hole have a common pressure-bearing wall, reducing the length of the valve body and having their respective sealing surfaces, threaded diameters, square or round tops, and inner cavity holes. The end of the valve body is a welded end or a flange. The flange or welded end hole is processed into a hole suitable for installing an inclined flap check valve inside, or a hole suitable for installing an axial flow check valve, or a through hole without installing an end check valve.

[0006] The valve seat, which is non-body-sealed and replaceable and connected to the valve seat hole in the inclined middle hole, has two structures: thread and taper. The inclined flap check valve only uses the taper to connect the valve seat. The general valve seat is adopted by the ordinary globe valve, the globe valve with anti-noise mesh cover, the lift check valve or the ball check valve. The barrel-type valve seat is adopted by the multi-stage regulating valve. The valve flaps that form a sealing pair with the valve seat include the globe valve flap, the inclined flap check valve flap, the multi-stage regulating valve flap, the globe check valve and the lift check valve flap, the needle-type globe valve flap, and the ball. The head forms of the valve stems that control the movement of the valve flaps include the valve stem for the globe valve with a hook head, the valve stem for the globe check valve without a shoulder at the head, the valve stem for the regulating valve with a connection hole at the head, and the pin shaft of the inclined flap check valve. The valve cover is divided into a perforated valve cover and a blind-hole valve cover. The perforated valve cover is used for the globe valve, the needle valve, the globe check valve and the regulating valve. The blind-hole valve cover is used for the lift check valve, the ball check valve and the inclined flap check valve. The anti-noise mesh cover is used for the anti-noise and anti-scour working conditions and is installed in the slightly larger inclined inner cavity hole. Sealing rings, screw caps, packing, pressing flange, packing gland, packing plate, compression bolts, nuts, indicating block parts and the valve body and valve cover form the inclined middle hole valve body seal and valve stem seal system;

[0007] In the vertical middle hole, the valve seats connected to the valve seat hole include the wedge gate valve seat and the parallel gate valve seat, the wedge gate valve seat with an integral hard alloy or a hard alloy welded to the sealing surface throttle port with a V-shaped regulating port and the parallel gate valve seat with an integral hard alloy or a hard alloy welded to the sealing surface throttle port with a V-shaped regulating port. The single-wedge gate plate, the left wedge gate plate and the right wedge gate plate form a sealing pair with the wedge gate valve seat or the wedge gate valve seat with a V-shaped regulating port. The parallel left gate plate and the parallel right gate plate form a sealing pair with the parallel gate valve seat or the parallel gate valve seat with a V-shaped regulating port. The left wedge gate plate has a vertically integral or split flat round hook head. The right wedge gate plate has a horizontally inserted flat round hook groove. After the left gate plate is inserted into the right gate plate and rotated 90 degrees, a wedge double gate plate group that does not come off but has a slight swing is formed. The parallel left gate plate has a vertically integral or split flat round hook head and a hole for installing a spring. The parallel right gate plate has a horizontally inserted flat round hook groove. After the parallel left gate plate is installed with a spring and inserted into the parallel right gate plate and rotated 90 degrees, a parallel double gate plate group that can be supported without coming off and has a slight swing is formed. The single gate plate, the double gate plate and the parallel double gate plate have the same general dimensions for connecting to the valve stem. The valve stem controls the single gate plate, the double gate plate or the parallel double gate plate. The valve cover is a perforated valve cover. Sealing rings, screw caps, packing, pressing flange, packing gland, packing plate, compression bolts, nuts parts and the valve body and valve cover form the vertical middle hole valve body seal and valve stem seal system. In the vertical hole, six types of gate valves are formed by combining three types of gate plates: single-wedge plate, double-wedge plate and double-flat plate, with two types of valve seats: through hole and V-type regulating port;

[0008] The entrance and exit passage is equipped with an axial check valve seat or an inclined flap check valve seat, an axial check valve flap that forms a sealing pair with the axial check valve seat, and an axial check valve flap cover with a guide hood and valve stem positioning; the inclined flap check valve seat forms a sealing pair with the inclined flap check valve flap, and is assembled with the inclined flap check valve pin shaft and a pair of torsion springs into the valve seat hole of the passage;

[0009] The inclined flap check valve seat has a small-angle conical surface that fits and seals with the valve seat hole of the valve body and a large-angle conical surface for thrust sealing. There are two lugs on the outer circle of the seat, and there are two pin shaft holes on the lugs with axial eccentricity a and radial eccentricity b relative to the sealing conical surface. The sealing conical surface of the inclined flap check valve flap coincides with the sealing conical surface of the seat, and has the same position of pin shaft holes with axial eccentricity a and radial eccentricity b. The pin shaft has the same outer diameter envelope surface as the seat and the same radial eccentricity b. The valve flap is equipped with two symmetric torsion springs perpendicular to the pin shaft holes, located between the two side surfaces of the valve flap and the arc lugs of the seat. The two extended ends of the torsion spring are respectively in contact with the bottom surface of the seat lug and the bottom surface of the valve flap side surface, so that the valve flap can automatically reset and seal; the two protruding arc lugs and the central position on the seat meet the requirements of a three-eccentric check valve;

[0010] The valve seat of the multi-stage regulating valve has a small conical surface that fits and seals with the valve seat hole of the valve body, an inlet hole, a sealing conical surface, a sealing surface outlet hole, a first and a second valve seat partition plate. The surface of the end partition plate is evenly distributed with circumferential holes for the medium to flow out of the valve seat; the valve flap of the multi-stage regulating valve has an outer diameter surface of the inlet end cylinder that fits with the inlet hole of the valve seat, a sealing conical surface. There is a narrow groove between the outer diameter and the sealing conical surface. There are two groups of small holes in the inlet end cylinder. One group of small holes near the sealing surface partially falls within the width range of the narrow groove to form an arcuate small hole area; there is a first valve flap spacer ring that fits with the sealing surface outlet hole of the valve seat, a second and a third valve flap spacer ring that fit with the first and second valve seat partition plates, and an end spacer ring that fits with the valve seat end partition plate. The spacing distances between the valve seat partition plate and the valve flap spacer ring are equal. The outer circle surfaces of the first valve flap spacer ring, the second and the third valve flap spacer rings have labyrinth sealing grooves. There is a group of deep labyrinth grooves between the first valve flap spacer ring and the second valve flap spacer ring. The first valve flap partition plate and the third valve flap spacer ring are processed with evenly distributed small straight holes. The second valve flap spacer ring is processed with evenly distributed small inclined holes. The valve flap end spacer ring is a cylindrical structure. There is a diversion groove on the outer diameter of the cylinder. The groove width of the diversion 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 is more than that of the circumferential hole of the valve seat; there are evenly distributed axial holes on the inner end surface of the cylinder with a number less than that of the circumferential holes evenly distributed in the groove. The axial holes communicate with the grooves between the third valve flap spacer ring and the end spacer ring; there is a hole in the middle of the valve flap that fits with the valve stem. There is a pin hole connecting with the valve stem between the second valve flap spacer ring and the third valve flap spacer ring of the valve flap. The position of the pin hole ensures that the end of the valve stem contacts the bottom of the middle hole of the valve flap when closed. The valve flap is movably connected to the valve stem by a pin, and the multi-stage regulating valve is controlled by the valve stem.

[0011] Adopt a gear operating device, and the characteristics of the gear operating device are as follows:

[0012] It includes a support rod. One end of the support rod is connected to the mounting screw hole at the top of the inclined middle hole of the valve body by threads, and the other end of the support rod has a threaded hole; the distribution diameter of the four equally divided connection holes of the gearbox seat conforms to the ISO 5210 standard, and the forms of the connection holes are two forms: light through holes and threaded through holes. The gearbox body has screw through holes for connecting with the gearbox seat; for the mounting screw hole at the top of the inclined middle hole of the valve body that conforms to the ISO5210 standard, a long screw passes through the gearbox body, and the gearbox seat is connected and fixed to the support rod; for the four equally divided mounting screw hole dimensions at the top of the valve body that do not conform to the ISO 5210 standard, a transition adapter plate is fixed on the support rod by screws, and the screws pass through the eight equally divided bolt holes of the transition adapter plate and are connected to the gearbox seat, and the screws pass through the gearbox body and are connected to the four equally divided screw holes on the gearbox seat to form an integral gear operating device; the axial force of the valve stem is transmitted to the valve stem nut. Thin flat needle bearings are installed on the shaft shoulders of the valve stem nut, one on the top and one on the bottom. The valve stem nut assembly is fixed in the gearbox seat by a threaded bearing cover, so that the gearbox body does not bear the axial force of the valve stem. The threaded bearing cover is locked with a set screw. The head of the valve stem nut has a hexagonal surface or keyway surface for transmitting torque, which cooperates with the hexagonal or keyway surface of the spiral bevel gear disc. O-rings at both ends of the valve stem nut seal the operating device. The spiral bevel gear disc is connected to the gearbox seat through a bearing and is axially fixed by the inner hollow shaft end of the gearbox body. Medium and heavy-duty roller bearings are installed on the spiral gear shaft that orthogonally meshes with the spiral gear disc. There is a spacer between the two bearings. The bearings and the spacer are axially fixed on the spiral gear shaft by snap rings. Most of the heavy-duty roller bearings are fixed in the holes of the gearbox body, leaving a part for positioning the bearing cover, and the spiral gear shaft and the bearing parts assembly are fixed to the gearbox body by screws, nuts and bearing covers. There are 4 symmetrically distributed non-uniform lock holes on the bearing cover with a small angle of 30 degrees adjacent to each other. The hole groove of the three-jaw impact block is key-connected to the spiral gear shaft. The swing angle between the handwheel with three equally divided inner claws and the impact block is greater than 30 degrees. When impacting, a large instantaneous torque is output by the gear operating mechanism. A locking piece is added to the handwheel to lock the operating position of the handwheel. The center pitch circle diameter of the 6 equally divided locking piece is equal to the diameter of the 4 lock holes on the bearing cover to achieve handwheel locking; thus, a first-stage reduction spiral bevel gear operating device is formed; the bearing cover is installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection disc;

[0013] For a secondary transmission operating device with a large output torque, remove the bearing cover of the primary reduction spiral bevel gear operating device and replace it with an internal gear housing. The two ends of the housing are respectively fitted with heavy-duty roller bearings and the planetary reduction gearbox cover. The planetary reduction mechanism is fixed through the four equally divided connection holes at the input end of the gear housing by screws and nuts. The head size of the sun gear input shaft of the planetary reduction mechanism is the same as that of the spiral tooth shaft, and a three-jaw impact block and an internal three-jaw impact handwheel are installed. The planet carrier for fixing the planet gears is a combined structure, consisting of a planet carrier seat, a planet carrier plate, 6 spacers, 6 screws, and 6 lock nuts. The planet carrier seat is key-connected to the spiral tooth shaft. There are two groups of equally distributed holes with different center distances on the planet carrier seat, and different numbers of teeth of the sun gears and planet gears are installed in the two groups of holes with different center distances respectively. Under the condition that other parts remain unchanged, two reduction ratios are achieved. The planet carrier plate has two groups of equally divided threaded holes corresponding to the planet carrier seat. The screws fasten the planet carrier seat to the threaded holes on the planet carrier plate through the 6 spacers in the middle, and are tightened by lock nuts. The planet gears are fitted with the spacers and are fixed between the planet carrier seat and the planet carrier plate. Four arc grooves with the same center distance as the threaded holes at the input end of the gear housing are machined on the outer circle of the internal gear housing. A transition connector with internal and external threads and the same diameter as the arc grooves is connected to the threaded holes at the input end of the gear housing. The outer circle of the connector positions and prevents rotation of the arc grooves of the internal gear housing. The screws fix the planetary reduction gearbox cover, the internal gear housing, and the entire planetary reduction mechanism to the gear housing through the connector to form a secondary reduction valve operating device; the planetary reduction gearbox cover is installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate;

[0014] One end of the support rod is threadedly connected to the mounting screw hole at the top of the vertical middle hole of the valve body, and the other end of the support rod has a threaded hole; the distribution diameter of the four equally divided connecting holes of the gearbox seat conforms to the provisions of ISO 5210 standard, and the forms of the connecting holes are two forms: light through holes and threaded through holes. The gearbox body has screw through holes for connecting with the gearbox seat; for the mounting screw hole at the top of the vertical middle hole of the valve body that conforms to the ISO 5210 standard, a long screw passes through the light through holes of the gearbox body and the gearbox seat and is connected and fixed to the support rod; for the mounting screw hole at the top of the vertical middle hole of the valve body that does not conform to the ISO 5210 standard, a bracket is used for transitional connection between the valve body and the gearbox seat. The hole of the gearbox seat is a full-thread through hole, and the screw passes through the gearbox body and is connected to the upper part of the threaded hole of the gearbox seat to form an integral gear operating device. The bolt passes through the hole of the bracket and is threadedly connected to the lower part of the gearbox seat. The stud and nut connect and fix the bracket to the mounting screw hole at the top of the vertical middle hole of the valve body; the axial force of the valve stem is transmitted to the valve stem nut. There is a thin flat needle bearing on each of the upper and lower sides of the shoulder of the valve stem nut. The valve stem nut assembly is fixed in the gearbox seat by a threaded bearing cover, so that the gearbox body does not bear the axial force of the valve stem. The threaded bearing cover is locked with a set screw. The head of the valve stem nut has a hexagonal surface or keyway surface for transmitting torque, which cooperates with the hexagonal or keyway surface of the spiral bevel gear disk. The O-ring at both ends of the valve stem nut seals the operating device. The lower end shaft and the upper end hole of the spiral bevel gear disk are respectively fitted and fixed with the inner hollow shaft ends of the gearbox seat and the gearbox body. Medium and heavy-duty roller bearings are installed on the spiral gear shaft that is orthogonally meshed with the spiral gear disk. There is a spacer between the two bearings. The bearings and the spacer are axially fixed on the spiral gear shaft by a snap ring. Most of the heavy-duty roller bearings are fixed in the hole of the gearbox body, leaving a part for positioning the bearing cover, and the spiral gear shaft and the bearing parts assembly are fixed to the gearbox body by screws, nuts and the bearing cover. There are 4 symmetrically distributed non-uniform lock holes with a small angle of 30 degrees adjacent to each other on the bearing cover. The hole groove of the three-jaw impact block is key-connected to the spiral gear shaft. The swing angle between the handwheel with three equally divided inner claws and the impact block is greater than 30 degrees. When impacted, a larger instantaneous torque is output by the gear operating mechanism. A locking piece is added to the handwheel to lock the operating position of the handwheel. The center pitch circle diameter of the 6 equally divided locking piece is equal to the diameter of the 4 lock holes on the bearing cover, realizing the locking of the handwheel; thus, a first-stage reduction spiral bevel gear operating device is formed; the bearing cover is installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection disk;

[0015] Planetary reduction spur gear operating device: For the gear operating device connected to the bracket, keep the connection bolts of the gearbox seat of the primary reduction spiral bevel gear operating device connected to the bracket. The valve stem nut thin-type plain needle bearing threaded bearing cover assembly is retained and fixed inside the gearbox seat, and all other parts of the primary reduction spiral bevel gear operating device are removed; The hexagonal or keyway surface of the planet carrier seat is loosely fitted with the head of the valve stem nut to transmit torque and perform single-axis positioning. The lower end shaft of the planet carrier seat is fitted with the gearbox seat. The lower O-ring inside the upper end hole of the planet carrier seat achieves static sealing of the upper part of the valve stem nut, and the upper O-ring inside the upper end hole of the planet carrier seat achieves dynamic sealing of the lower part of the sun gear input shaft. The middle hole of the sun gear input shaft passes through the valve stem. A single ball bearing is installed in the middle of the sun gear input shaft and is fitted with the planetary reduction gearbox cover. The upper part of the sun gear input shaft has a hexagon or keyway and threads to install the handwheel and the handwheel locking protective sleeve. There are two groups of equally distributed holes with different center distances on the planet carrier seat, and the holes with two different center distances are used to install sun gears and planet gears with different numbers of teeth respectively. Under the condition that other parts remain unchanged, two reduction ratios are achieved. The planet carrier plate has two groups of equally distributed holes corresponding to the planet carrier seat. The shoulder shafts of 6 or more planetary shafts with threads at both ends are fitted with the holes of the planet carrier seat and the planet carrier plate and are fastened and locked with nuts. The planet gears are fitted with the planetary shafts and are fixed between two gaskets of the planet carrier seat and the planet carrier plate. Four arc grooves with a center distance equal to that of the gearbox seat are machined on the outer circle of the internal gear housing. A transition connector with internal and external threads and the same diameter as the arc grooves is connected to the upper part of the threaded through hole of the gearbox seat. The outer circle of the connector positions and prevents the rotation of the internal gear housing arc groove. Screws fix the planetary reduction gearbox cover, the internal gear housing and the entire planetary reduction mechanism to the gearbox seat through the connector to form a planetary reduction spur gear valve operating device; Driving the handwheel makes the planet carrier output low speed and large torque to drive the valve stem nut to make the valve stem move up and down. The axial force of the valve stem is restricted inside the gearbox seat and the threaded bearing cover. The planetary reduction spur gear valve operating device replaces the planet gears and sun gears to achieve two different reduction ratios. The planetary reduction gearbox cover is installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate;

[0016] For a large-sized dome valve body TY gate stop valve, its operating device has a circular gear housing and a gear box seat. There are full-thread through holes on the gear box seat that conform to the indexing dimensions of ISO 5210 standard. Screws pass through the gear housing and are connected and fastened to the upper part of the full-thread through holes of the gear box seat. The bracket is connected and fastened to the lower part of the full-thread through holes of the gear box seat with bolts. Stud nuts fix the bracket on the top of the valve body. The nut shaft has a coarse thread for connecting with the valve stem nut and a fine thread for connecting with two locking rings. Threads with different pitches connect the valve stem nut and the nut shaft and are locked by the locking rings. At the end of the mating part of the valve stem nut and the coarse thread of the nut shaft, there are set screws to form a reliable anti-loosening structure of differential thread plus double-ring locking plus locking at the threaded part. When the coarse thread of the nut shaft and the valve stem nut is replaced by a key or a spline, the fine thread for connecting with the two locking rings is still maintained, and the valve stem nut is fixed on the nut shaft with two fine-thread locking rings. The thread of the valve stem nut matches the valve stem. Two plain needle roller bearings are installed on the upper and lower surfaces of the shoulder of the nut shaft. The plain needle roller bearings and the valve stem nut shaft are fixed in the gear box seat by a threaded cover. The gear housing 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 gear disk is connected to the keyway cone surface of the nut shaft. The upper and lower end shafts of the nut shaft are respectively fitted with the holes of the gear housing and the threaded cover and are sealed with upper and lower O-rings. On the spiral gear shaft that orthogonally meshes with the spiral gear disk, there are a light cylindrical roller bearing with large radial load-carrying capacity and axial limit for the inner and outer rings and a heavy-duty roller bearing that can bear radial and axial heavy loads. There is a spacer between the two bearings. The two bearings and the spacer are axially fixed on the spiral gear shaft by two snap rings. Most of the heavy-duty roller bearing is fixed in the hole of the gear housing. The protruding part of the heavy-duty roller bearing is fitted with the hole of the transition ring. The lower end of the inner gear housing is fitted with the outer circle of the transition ring and presses the heavy-duty roller bearing. The upper end of the inner gear housing is fitted with the planetary reduction gearbox cover. The planetary reduction mechanism is fixed through screws, nuts and the four-equal-part connection holes at the input end of the gear housing. The head shaft and keyway of the sun gear input shaft of the planetary reduction mechanism are installed with a three-jaw impact block and an inner three-jaw impact handwheel. The planet carrier for fixing the planet gears is a combined structure, which consists of a planet carrier seat, a planet carrier plate, 6 pairs of spacers and screw spring washers, and a locking gasket corresponding to the two groups of center holes of the planet carrier seat.The planet carrier seat is key-connected to the helical gear shaft. There are two groups of equally distributed holes with different center distances on the planet carrier seat, which are trisected. The holes with two different center distances are respectively used to install sun gears and planet gears with different numbers of teeth. Under the condition that other parts remain unchanged, two reduction ratios can be achieved. The planet carrier plate has two groups of trisected threaded holes corresponding to the planet carrier seat. Screws fasten the planet carrier seat to the threaded holes on the planet carrier plate through 6 spacers in the middle, and double anti-loosening is formed by spring washers and lock washers. Gaskets are installed at both ends of the planet gears and cooperate with the spacers, and are fixed between the planet carrier seat and the planet carrier plate. Four arc grooves with the same center distance as the threaded holes at the input end of the gear box body are machined on the outer circle of the internal gear box body. A transition connector with internal and external threads and the same diameter as the arc grooves is connected to the threaded holes at the input end of the gear box body. The outer circle of the connector positions and prevents rotation of the arc grooves of the internal gear box body. Screws and nuts fix the planetary reduction gear box cover, the internal gear box body and the whole set of planetary reduction mechanisms to the gear box body through the connector to form a two-stage reduction valve operating device; the planetary reduction gear box cover is installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate;

[0017] For the two-stage reduction gear operating device, remove the sun gear, planet gear, planet carrier seat, planet carrier plate, internal gear box body, planetary reduction gear box cover and internal small parts of the planetary reduction device, and retain the helical gear shaft. A bearing cover with 4 symmetrically distributed and non-uniformly distributed lock holes with a small angle of 30 degrees adjacent to each other is matched with a heavy-duty ball bearing and fastened with screws. The hole groove of the three-jaw impact block is key-connected to the helical gear shaft. A handwheel with three equally divided internal claws is matched with the helical gear shaft and the three-jaw impact block and has a swing angle greater than 30 degrees. When impacting, a larger instantaneous torque can be output by the gear operating mechanism. A locking piece is added to the handwheel to lock the operating position of the handwheel. The center pitch circle diameter of the 6 equally divided locking piece is equal to the diameter of the 4 lock holes on the bearing cover, realizing the locking of the handwheel and forming a one-stage reduction spiral bevel gear operating device; the bearing cover is installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate.

[0018] For small-diameter or large-size valve bodies made of forgings, the operating device selects different forms of bevel gears, spur gears, operating devices or handwheel operations according to the actual load. The handwheel direction of the bevel gear operating device is adjusted according to the operating requirements.

[0019] Advantages of the present invention:

[0020] The compact TY-type multi-functional combined valve has a compact structure, a small installation space, is easy to manufacture, has less emissions, is green and environmentally friendly, has no welds for multi-valve connection, has a short construction period, and has low costs for weld heat treatment and inspection; the realization of the integration of the compact gate valve, globe valve and check valve breaks through the thinking limitation that it cannot be produced due to structural and manufacturing difficulties.

[0021] The internal parts and elements of the TY-type valve can be conveniently processed and installed for specific valve functions and valve types according to the requirements of the pipeline system, and dozens of valve types can be combined.

[0022] The internal parts and structure of the TY-type multi-functional combined valve can be used for single Y-type valves with conventional requirements to form various Y-type valves with or without check valves; it can also be used for single gate valves with conventional requirements to form various single-disc double-disc or parallel double-disc gate valves with or without check valves, with strong versatility.

[0023] The double-disc group that can be supported without disconnection and has slight swing has reliable sealing and high cost performance. The adjustable erosion-resistant gate valve seat with a V-shaped port enables the gate valve to have an adjustable function.

[0024] The integrated tilting disc check valve component composed of a valve seat, a valve disc and a pin shaft torsion spring has a simple and compact structure, is easy to install, and can form various high-cost performance tilting disc check valves of Y-type, straight-through type and wafer type.

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

[0026] The series of gear operating devices has the characteristics of high cost performance that the axial force of the valve stem (medium force) does not act on the gear box body, and the gear box seat is directly connected to the support rod. The input shaft impacts the handwheel and outputs a large torque. The handwheel is convenient to lock. The positions of the two groups of fixed holes of the planet carrier in the planetary reduction device can be easily realized by replacing the sun gear and the planet gear to achieve two-stage reduction operating devices with different speed ratios.

[0027] The planetary spur gear reduction device is small in size and high in efficiency. The handwheel and the valve stem are coaxial, which is convenient for operation and easy to achieve different speed ratios. The gear box seats and valve stem nuts of the planetary spur gear and bevel gear operating devices are universal. The forms of the valve stem nuts are integral type and combined type, which are convenient to use and have high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the drawings and embodiments.

[0029] Figure 1 It is a schematic diagram of the TY-type valve body.

[0030] Figure 2 It is a schematic diagram of the TY-type valve body with flanges.

[0031] Figure 3 It is a schematic diagram of the barrel-type valve seat of the multi-stage regulating valve.

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

[0033] Figure 5 It is a schematic diagram of a single-disc gate valve plus a needle valve.

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

[0035] Figure 7 It is a schematic diagram of a parallel double-disc gate valve plus a globe valve.

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

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

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

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

[0040] Figure 12 It is a schematic diagram of a parallel double-disc regulating gate valve plus a noise-resistant globe valve plus a bevel check valve.

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

[0042] Figure 14 It is a schematic diagram of a wafer-type bevel check valve.

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

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

[0045] Figure 17 It is a schematic diagram of a handwheel-operated forged body gate globe valve.

[0046] Figure 18 It is a schematic diagram of a large-bore single gate valve with a bracket plus a noise-resistant globe valve.

[0047] Figure 19 It is a schematic diagram of a gear-operated gate globe valve with a transition adapter connection.

[0048] Figure 20 It is a schematic diagram of a large-bore bracket-structured gate globe valve operated by planetary spur gears and bevel gears. Detailed implementation manners

[0049] See Figure 1 , Figure 2, a compact TY-type gate stop multi-functional combined valve. The inlet and outlet ends of the TY-type valve body 1 are coaxial, and the axis 001 of the inlet and outlet passage 01. There is a first middle hole 02 perpendicular to the axis 001 and a second middle hole 03 inclined to the axis 001 between the inlet and outlet ends. The axis of the first vertical middle hole is 002, and the axis of the second inclined middle hole is 003. 002 and 003 intersect with 001, and the inclination angle α between the axis 003 and the axis 001 ranges from 45° to 60°. The vertical middle hole 02 intersects with the passage 01 to have two parallel valve seat holes 012, and the valve seat hole 013 where the inclined middle hole 03 intersects with the passage 01. The lowest point at the upper end and the highest point at the lower end of the inclined valve seat hole are both within the range of the passage 01. There is a concave flow cavity at the lower end of the valve seat hole 013 to ensure the flow area. Two parallel valve seat holes 012 can be installed (welded or expanded) with two parallel or wedge-shaped valve seats. The inclined hole 013 can be processed with a sealing surface by using the body or surfacing method, or can be processed into a threaded or tapered surface form to install the valve seat. The high point where the straight outer diameter and the inclined outer diameter are connected is within the range of the passage outer diameter. The vertical middle hole and the inclined middle hole have a common pressure-bearing wall 04, which reduces the length of the valve body. And they have their own sealing surfaces, thread diameters, square or round tops, and inner cavity holes. There are mounting screw holes evenly distributed along the axes 002 and 003 at the top. When the inclined middle hole is used as a check valve, the top screw holes do not need to be processed. The end of the valve body 1 is a welded end or a flange. The flange or welded end hole can be processed into a hole T4 suitable for installing an internal inclined valve flap check valve, or a hole A4 suitable for installing an axial flow check valve, or a through hole without an end check valve.

[0050] See Figures 1 to 13, inside the inclined middle hole, the seat of the valve that is non-body-sealed and replaceable and connected to the 013 valve seat hole has two structures: thread and taper. The inclined flap check valve only uses the taper to connect the valve seat 202, the ordinary globe valve or the globe valve with an anti-noise mesh cover or the lift check valve or the ball check valve uses the general valve seat 2, and the multi-stage regulating valve uses the barrel valve seat 201. The valve flaps that form a sealing pair with the valve seat include the globe valve flap 3, the inclined flap check valve flap 302, the multi-stage regulating valve flap 301, the stop check valve and the lift check valve flap 303, the needle valve flap 304, and the ball 310. The head forms of the valve stems that control the movement of the valve flaps include the valve stem 4 for the globe valve with a hooked head, the valve stem 403 for the stop check valve without a shoulder at the head, the valve stem 401 for the regulating valve with a connecting hole at the head, and the pin shaft 402 for the inclined flap check valve. The valve covers are divided into the perforated valve cover 5 and the blind hole valve cover 501. The perforated valve cover 5 is used for the globe valve, the needle valve, the stop check valve and the regulating valve; the blind hole valve cover 501 is used for the lift check valve, the ball check valve and the inclined flap check valve. The anti-noise mesh cover 6 is used for the anti-noise and anti-scouring working conditions and is installed in the slightly larger inclined inner cavity hole. Parts such as the sealing ring 7, the screw caps 8, 801, the packing 9, the pressing flange 10, the packing gland 11, the packing pressing plate 12, the compression bolt 13, the nut 14, and the indicating block 15 form the inclined middle hole valve body seal and the valve stem seal system 500 with the valve body and the valve cover. Adding an anti-noise mesh cover to the six types of valves including the globe valve, the needle valve, the stop check valve, the lift check valve, the inclined flap valve and the ball check valve in the inclined middle hole increases the anti-scouring effect.

[0051] See Figures 1 to 13, inside the vertical middle hole, there are a wedge gate valve seat 203 and a parallel gate valve seat 204 connected to the 012 valve seat hole, a wedge gate valve seat 207 made of integral cemented carbide with a V-shaped regulating port or a hard alloy welded to the sealing surface throttle port, and a parallel gate valve seat 208 made of integral cemented carbide with a V-shaped regulating port or a hard alloy welded to the sealing surface throttle port. The single wedge gate plate 305, the wedge left gate plate 306 and the wedge right gate plate 307 form a sealing pair with the wedge gate valve seat 203 or the wedge gate valve seat 207 with a V-shaped regulating port. The parallel left gate plate 308 and the parallel right gate plate 309 form a sealing pair with the parallel gate valve seat 204 or the parallel gate valve seat 208 with a V-shaped regulating port. The wedge left gate plate 306 has a vertically integral or split flat round hook head, and the wedge right gate plate 307 has a horizontally inserted flat round hook groove. After the left gate plate 306 is inserted into the right gate plate 307 and rotated 90 degrees, a wedge double gate plate group that does not come off but has a slight swing is formed. The parallel left gate plate 308 has a vertically integral or split flat round hook head and a hole for installing a spring. The parallel right gate plate 309 has a horizontally inserted flat round hook groove. After the parallel left gate plate 308 is installed with a spring and inserted into the parallel right gate plate 309 and rotated 90 degrees, a parallel double gate plate group that can be supported without coming off and has a slight swing is formed. The single gate plate, the double gate plate and the parallel double gate plate have the same general dimensions for connecting to the valve stem. The valve stem 404 can control the single gate plate, the double gate plate or the parallel double gate plate. The valve cover is a perforated valve cover 502. Sealing ring 71, screw cap 81, packing 91, pressing plate flange 101, packing gland 111, packing pressing plate 121, tightening bolt 131, nut 141, etc. form a vertical middle hole valve body sealing and valve stem sealing system 400 with the valve body and the valve cover. The single wedge plate, double wedge plate and double flat plate in the vertical hole and the through hole and the V-type regulating port in the two valve seat combinations form six types of gate valves.

[0052] See Figures 10 to 12 , the inlet and outlet channels are equipped with an axial flow check valve seat (body or insert ring) 206 or an inclined flap check valve seat 202. The axial flow check valve flap 311 that forms a sealing pair with the axial flow check valve seat 206 (body or insert ring), and the axial flow check valve flap cover 506 with a guide cover and valve stem positioning. The inclined flap check valve seat 202 forms a sealing pair with the inclined flap check valve flap 302, and is assembled with the inclined flap check valve pin shaft 402 and a pair of torsion springs in the valve seat hole of the channel.

[0053] See Figure 9 , Figure 11 , Figure 12 , Figures 14 to 16, the inclined flap check valve seat 202 has a small-angle conical surface that fits and seals with the valve seat hole of the valve body and a large-angle conical surface for thrust sealing. There are two lugs on the outer circle of the seat, and there are pin holes C on the lugs with axial eccentricity a and radial eccentricity b relative to the sealing conical surface MZ. The sealing conical surface MB of the inclined flap check valve flap 302 coincides with the sealing conical surface of the seat, and the positions of the pin holes C with the same axial eccentricity a and radial eccentricity b are the same as those of the seat outer diameter envelope surface. The pin 402 with the same radial eccentricity b maintains the positions of the seat and the flap. The flap with a butterfly cross-section has a low flow resistance characteristic. The flap is equipped with two torsion springs symmetrically on the two sides perpendicular to the pin holes C, located between the two sides of the flap and the arc lugs of the seat. The two protruding ends of the torsion springs are respectively in contact with the bottom surface of the seat lug and the bottom surface of the flap side, enabling the flap to automatically reset and seal. The two protruding arc lugs and the central position on the seat can be designed to meet the requirements of a three-eccentric check valve. The two-eccentric or three-eccentric inclined flap check valve component composed of the seat, the flap, and the pin torsion spring has a simple and compact structure and can be assembled with Y-type, straight-through, and wafer-type valve bodies (the seat can also be welded to the straight-through and wafer-type valve bodies) to form various non-penetrating and cost-effective inclined plate check valves.

[0054] See Figures 2 to 4 , Figure 11, The valve seat 201 of the multi-stage regulating valve has a small conical surface Z201 that mates and seals with the valve seat hole 012(013) of the valve body. There is an inlet hole R201, a sealing conical surface M201, a sealing surface outlet hole C201. The surfaces of the partitions G1, G2, and the end partition D201 are evenly distributed with circumferential holes n201 for the medium to flow out of the valve seat. The valve flap 301 of the multi-stage regulating valve has an outer diameter surface R301 of the inlet end cylinder that mates with the inlet hole R201 of the valve seat, a sealing conical surface M301. There is a narrow groove b301 between the outer diameter R301 and the sealing conical surface M301. The inlet end cylinder has two groups of small holes e301. One group of small holes near the sealing surface partially falls within the width range of the narrow groove to form an arcuate small hole area. A spacer ring C301 that mates with the sealing surface outlet hole C201 of the valve seat, spacer rings G11, G22 that mate with the partitions G1, G2 of the valve seat, and an end spacer ring D301 that mates with the end partition D201 of the valve seat. The spacing distances between the valve seat partitions and the valve flap spacer rings are equal. The outer cylindrical surfaces of the valve flap spacer rings C301, G11, G22 have labyrinth sealing grooves. There is a group of deep labyrinth grooves between the spacer ring C301 and G11. The partitions C301, G22 are machined with evenly distributed small straight holes K301, K22. The spacer ring G11 is machined with evenly distributed small inclined holes K11. The valve flap end spacer ring D301 is of a cylindrical structure. There is a diversion groove on the outer diameter of the cylinder. The groove width of the diversion groove is greater than the diameter of the circumferential hole n201 of the valve seat. There are evenly distributed circumferential holes n301 in the groove. The diameter of n301 is smaller than n201, and the number is more than the small holes n201 of the valve seat. There are evenly distributed axial holes z301 on the inner end surface of the cylinder, and the number of axial holes z301 is less than that of the circumferential holes n301. The axial holes z301 communicate with the grooves between the spacer ring G22 and the end spacer ring D301. There is a hole d301 in the middle of the valve flap that mates with the valve stem 401. There is a pin hole X301 connecting with the valve stem 401 between the spacer rings G11 and G22 of the valve flap. The position of the pin hole is guaranteed so that the end of the valve stem contacts the bottom of the middle hole of the valve flap when closed. The valve flap 301 is movably connected to the valve stem 401 through a pin 407, and the multi-stage regulating valve is controlled by the valve stem.

[0055] See Figures 1 to 13 , Different forms of valve seats, gate plates, valve flaps, valve stems, valve covers, and wire meshes are used in the vertical holes and inclined holes. Combinations of these can achieve dozens of different functions. Table 1 shows some of the combined valves that can be formed by the same valve body and their main functions.

[0056] Table 1 Internal part compositions and main functions of typical TY-type valve body combined valves

[0057]

[0058]

[0059] The valve types and functions listed in Table 1 are only some of the combinations. Valve types with other functions can be combined and expanded as needed. When an inclined flap or axial flow check valve is installed at the outlet end port, the number of valve types of the combined valve doubles.

[0060] See Figure 11 , one end of the support rod 16 is threadedly connected to the mounting screw hole Z at the top of the inclined middle hole of the valve body (hereinafter referred to as the inclined top of the valve body), and the other end of the support rod 16 has a threaded hole; the distribution diameter of the four equally divided connection holes of the gearbox seat 17 conforms to the ISO5210 standard, and the forms of the connection holes are two forms: light through holes and threaded through holes. The gearbox body 18 has screw through holes for connecting with the gearbox seat 17. For the mounting screw hole at the inclined top of the valve body that conforms to the ISO 5210 standard, the long screw 19 passes through the gearbox body 18, and the gearbox seat 17 is connected and fixed to the support rod 16. For the size of the four equally divided mounting screw holes at the top of the valve body that does not conform to the ISO 5210 standard, the transition adapter plate 20 is fixed on the support rod 16 by the screw 1901, the screw 1902 passes through the eight equally divided bolt holes of the transition adapter plate 20 and is connected to the gearbox seat 1701, and the screw 1903 passes through the gearbox body 18 and is connected to the four equally divided threaded holes on the gearbox seat 1701 to form an integral gear operating device. The axial force of the valve stem 4 is transmitted to the valve stem nut 21. Thin flat needle bearings 22 are installed on the shoulders of the valve stem nut 21, one on the top and one on the bottom. The valve stem nut assembly is fixed in the gearbox seat 17 by the threaded bearing cover 23, so that the gearbox body does not bear the axial force of the valve stem. The threaded bearing cover is locked with a set screw. The head of the valve stem nut has a hexagonal surface or keyway surface for transmitting torque, which cooperates with the hexagonal or keyway surface of the spiral bevel gear disc 24. The O-rings at both ends of the valve stem nut seal the operating device. The spiral bevel gear disc 24 is connected to the gearbox seat 17 through the bearing 25 and is axially fixed by the inner hollow shaft end of the gearbox body 18. Medium and heavy-duty roller bearings are installed on the spiral gear shaft 26 that meshes orthogonally with the spiral gear disc 24. There is a spacer between the two bearings. The bearings and the spacer are axially fixed on the spiral gear shaft 26 by snap rings. Most of the heavy-duty roller bearing 32 is fixed in the hole of the gearbox body 18, leaving a part for positioning the bearing cover 27, and the spiral gear shaft 26 and the components of the bearings and other parts are fixed on the gearbox body 18 by screws, nuts and the bearing cover 27. There are 4 symmetrically distributed non-uniformly spaced locking holes on the bearing cover 27 with a small angle of 30 degrees adjacent to each other. The hole groove of the three-jaw impact block 28 is key-connected to the spiral gear shaft 26. The swing angle between the handwheel 29 with three equally divided inner claws and the impact block is greater than 30 degrees. When impacted, the gear operating mechanism outputs a large instantaneous torque. A locking piece 30 is added to the handwheel 29 to lock the operating position of the handwheel. The center pitch circle diameter of the six equally divided locking piece is equal to the diameter of the 4 locking holes on the bearing cover 27, realizing the handwheel locking. The part numbers 17 to 30 described in this section form a first-stage reduction spiral bevel gear operating device 100. The bearing cover 27 can be equipped with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate.

[0061] See Figures 5 to 7 , Figure 12 , Figure 19, for the two-stage transmission operating device with a larger output torque, remove the bearing cover 27 of the first-stage reduction spiral bevel gear operating device 100 and replace it with the internal gear box body 31. The two ends of the box body 31 are respectively fitted with the heavy-duty roller bearing 32 and the planetary reduction gear box cover 33. The planetary reduction mechanism is fixed through the four-equal-part connection holes at the input end of the gear box body 18 by screws and nuts. The head size of the sun gear input shaft 34 of the planetary reduction mechanism is the same as that of the spiral tooth shaft 26, and the three-jaw impact block 28 and the internal three-jaw impact handwheel 29 are installed. The planet carrier for fixing the planet gear 35 is a combined structure, which consists of a planet carrier seat 36, a planet carrier plate 37, 6 spacer sleeves 38, 6 screws, and 6 lock nuts. The planet carrier seat 36 is key-connected to the spiral tooth shaft 26. There are two groups of equally distributed holes with different center distances on the planet carrier seat 36, and the holes with two different center distances can be used to install the central gears and planet gears with different numbers of teeth respectively. Under the condition that other parts remain unchanged, two reduction ratios can be achieved. The planet carrier plate 37 has two groups of equally distributed threaded holes corresponding to the planet carrier seat 36. The screws fasten the planet carrier seat 36 through the 6 spacer sleeves 38 in the middle to the threaded holes on the planet carrier plate 37, and are fastened by lock nuts. The planet gear 35 is fitted with the spacer sleeve 38 and is fixed between the planet carrier seat 36 and the planet carrier plate 37. Four arc grooves with the same center distance as the threaded holes at the input end of the gear box body 18 can be machined on the outer circle of the internal gear box body 31. The transition connecting head 39 with internal and external threads and the same diameter as the arc grooves is connected to the threaded holes at the input end of the gear box body 18. The outer circle of the connecting head positions and prevents the rotation of the arc grooves of the internal gear box body 31. The screws fix the planetary reduction gear box cover 33, the internal gear box body 31, and the whole set of planetary reduction mechanisms to the gear box body 18 through the connecting head 39 to form the two-stage reduction valve operating device 200. The planetary reduction gear box cover 33 can be installed with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection disk.

[0062] See Figures 5 to 13, one end of the support rod 161 is threadedly connected to the installation screw hole at the top of the vertical middle hole of the valve body (hereinafter referred to as the straight top of the valve body), and the other end of the support rod 161 has a threaded hole; the distribution diameter of the four equally divided connection holes of the gearbox seat 171 conforms to the ISO 5210 standard, and the connection holes are in two forms: light through holes and threaded through holes. The gearbox body 181 has screw through holes for connecting with the gearbox seat 171. For the installation screw hole at the straight top of the valve body that conforms to the ISO 5210 standard, the long screw 1910 passes through the gearbox body 1801, and the light through hole of the gearbox seat 171 is connected and fixed to the support rod 161. For the installation screw hole at the straight top of the valve body that does not conform to the ISO 5210 standard, a bracket 2002 is used for transitional connection between the valve body and the gearbox seat 171. The hole of the gearbox seat is a full-thread through hole. The screw 1911 passes through the gearbox body 1801 and is connected to the upper part of the threaded hole of the gearbox seat 171 to form an integral gear operating device. The bolt 1912 passes through the hole of the bracket 2002 and is threadedly connected to the lower part of the gearbox seat 171. The stud 1913 and the nut 1914 connect and fix the bracket 2002 to the installation screw hole at the straight top of the valve body. The axial force of the valve stem 404 is transmitted to the valve stem nut 2101. Thin flat needle bearings 2201 are installed on the shoulders of the valve stem nut 2101, one on the top and one on the bottom. The valve stem nut assembly is fixed in the gearbox seat 171 by the threaded bearing cover 2301, so that the gearbox body does not bear the axial force of the valve stem. The threaded bearing cover is locked with a set screw. The head of the valve stem nut has a hexagonal surface or a keyway surface for transmitting torque, which cooperates with the hexagonal or keyway surface of the spiral bevel gear disc 2401. The O-rings at both ends of the valve stem nut seal the operating device. The lower end shaft and the upper end hole of the spiral bevel gear disc 2401 are respectively fitted and fixed with the inner hollow shaft ends of the gearbox seat 171 and the gearbox body 1801. Medium and heavy-duty roller bearings are installed on the spiral bevel gear shaft 2601 that is orthogonally meshed with the spiral gear disc 2401. There is a spacer between the two bearings. The bearings and the spacer are axially fixed on the spiral bevel gear shaft 2601 by snap rings. Most of the heavy-duty roller bearing 3201 is fixed in the hole of the gearbox body 1801, leaving a part for positioning the bearing cover 2701. The spiral bevel gear shaft 2601 and the components such as the bearings are fixed to the gearbox body 1801 by screws, nuts and the bearing cover 2701. There are 4 symmetrically distributed non-uniform lock holes on the bearing cover 2701 with a small angle of 30 degrees adjacent to each other. The hole groove of the three-jaw impact block 2801 is key-connected to the spiral bevel gear shaft 2601. The swing angle between the handwheel 2901 with three equally divided inner claws and the impact block is greater than 30 degrees. When impacting, a large instantaneous torque is output by the gear operating mechanism. A locking piece 30 is added to the handwheel 2901 to lock the operating position of the handwheel. The center pitch circle diameter of the locking piece with 6 equal divisions is equal to the diameter of the 4 lock holes on the bearing cover 2701, realizing the locking of the handwheel. The parts described in this section form a first-stage reduction spiral bevel gear operating device 1000. The bearing cover 2701 can be equipped with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate.

[0063] See Figure 20, Further, when the spur gear operates, for the gear operating device connected to the bracket 2002, the connection bolt 1912 connecting the gearbox seat 171 of the primary reduction spiral bevel gear operating device 1000 (referred to as the operating device 1000 for short) and the bracket 2002 is maintained. The valve stem nut 2101, thin type plain needle bearing 2201, and threaded bearing cover 2301 assembly are retained and fixed within the gearbox seat 171, and all other parts of the operating device 1000 are removed. The hexagonal or keyway surface of the planet carrier seat 3601 has a loose fit with the head of the valve stem nut 2101 to transmit torque and provide single-axis positioning. The lower end shaft of the planet carrier seat 3601 mates with the gearbox seat 171. The lower O-ring within the upper end hole of the planet carrier seat 3601 achieves static sealing of the upper part of the valve stem nut 2101, and the upper O-ring within the upper end hole of the planet carrier seat 3601 achieves 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. A single ball bearing is installed in the middle of the sun gear input shaft 3401 to mate with the planetary reduction gearbox cover 3301. The upper part of the sun gear input shaft 3401 has a hexagon or keyway and threads for installing the handwheel 2910 and the handwheel locking protective sleeve 2911. There are two groups of equally spaced (or more) holes with different center distances on the planet carrier seat 3601. The two groups of holes with different center distances can respectively install sun gears and planet gears with different numbers of teeth. Without changing other parts, two reduction ratios can be achieved. The planet carrier plate 3701 has two groups of equally spaced (or more) holes corresponding to the planet carrier seat 3601. The shoulder shafts of 6 (or more) planetary shafts 3801 with threads at both ends mate with the holes of the planet carrier seat 3601 and the planet carrier plate 3701 and are fastened and locked with nuts. The planet gears 3501 are mated with the planetary shafts 3801 and are fixed between two gaskets of the planet carrier seat 3601 and the planet carrier plate 3701. Four arc grooves with a center distance equal to that of the gearbox seat 171 are machined on the outer circle of the internal gear housing 3101. A transition connector 3901 with internal and external threads and the same diameter as the arc grooves is connected to the upper part of the threaded through hole of the gearbox seat 171. The outer circle of the connector positions and prevents the rotation of the arc grooves of the internal gear housing 3101. Screws fix the planetary reduction gearbox cover 3301, the internal gear housing 3101, and the entire planetary reduction mechanism to the gearbox seat 171 through the connector 3901 to form the planetary reduction spur gear valve operating device 2000 (hereinafter referred to as the operating device 2000). The 6 (or more) bolt-connected planet carrier frame-type assembly of the operating device 2000 has good stiffness, and the sun gear and the planet carrier can float and share the load as a whole. Driving the handwheel 2910 causes the planet carrier to output low speed and high 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 restricted within the gearbox seat 171 and the threaded bearing cover 2301. The operating device 2000 has a small structure and a strong load-bearing capacity. Replacing the planet gears and sun gears can achieve two different reduction ratios. The planetary reduction gearbox cover 3301 can be equipped with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate.

[0064] See Figure 20, for a large-sized dome valve body TY gate stop valve, its operating device 600 has a circular gear box body 1802 and a gear box seat 1702. The gear box seat 1702 has full-thread through holes conforming to the indexing dimensions of ISO 5210 standard. The screw 1904 passes through the gear box body 1802 and is connected and fastened to the upper part of the full-thread through hole of the gear box seat. The bracket 2001 is connected and fastened to the lower part of the full-thread through hole of the gear box seat with a bolt 1905. The stud 1906 and nut 1907 fix the bracket 2001 on the top of the valve body. The nut shaft 211 has a coarse thread connected to the valve stem nut 212 and a fine thread connected to two locking rings 213. Threads with different pitches connect the valve stem nut and the nut shaft and are locked by the locking rings. At the end of the mating part of the coarse threads of the valve stem nut and the nut shaft, there is a set screw 214 to form a reliable anti-loosening measure of differential thread plus double-ring locking plus locking at the threaded part; when the coarse thread of the nut shaft 211 and the valve stem nut 212 is replaced by a key or spline, the fine thread connected to the two locking rings 213 is still maintained, and the valve stem nut 212 is fixed on the nut shaft 211 by two fine-thread locking rings 213. The thread of the valve stem nut 212 matches the valve stem. Two plane needle roller bearings 221 are installed on the upper and lower surfaces of the shoulder of the nut shaft 211. The plane needle roller bearings and the valve stem nut shaft are fixed in the gear box seat 1702 by a threaded cover 231. The gear box body 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. The spiral gear disk 241 is connected to the keyway cone surface of the nut shaft 211. The upper and lower end shafts of the nut shaft 211 are respectively mated with the holes of the gear box body 1802 and the threaded cover 231 and are sealed with upper and lower O-rings. On the spiral gear shaft 261 orthogonally meshing with the spiral gear disk 241, there are installed a light cylindrical roller bearing 3211 with large radial bearing capacity and axial limit of the inner and outer rings and a heavy-duty roller bearing 3210 capable of bearing radial and axial heavy loads. There is a spacer sleeve between the two bearings. The two bearings and the spacer sleeve are axially fixed on the spiral gear shaft 261 by two snap rings. Most of the heavy-duty roller bearing 3210 is fixed in the hole of the gear box body 1802. The protruding part of the heavy-duty roller bearing 3210 is mated with the hole of the transition ring 3212. The lower end of the inner gear box body 3101 is mated with the outer circle of the transition ring 3212 and presses the heavy-duty roller bearing 3210. The upper end of the inner gear box body 3101 is mated with the planetary reduction gear box cover 331. The planetary reduction mechanism is fixed through screws, nuts and the four-equal-part connection holes at the input end of the gear box body 1802. The head shaft and keyway of the sun gear input shaft 341 of the planetary reduction mechanism are installed with a three-jaw impact block 281 and an inner three-jaw impact handwheel 291. The planet carrier fixing the planet gear 351 is a combined structure, which consists of a planet carrier seat 361, a planet carrier plate 371, 6 pairs of spacer sleeves 381 and screw spring washers, and a locking gasket corresponding to the two groups of center holes of the planet carrier seat.The planet carrier seat 361 is key-connected to the helical gear shaft 261. There are two groups of equally distributed holes with different center distances on the planet carrier seat 361, which are trisected. The two groups of holes with different center distances can be used to install sun gears and planet gears with different numbers of teeth respectively. Without changing other parts, two reduction ratios can be achieved. The planet carrier plate 371 has two groups of trisected threaded holes corresponding to the planet carrier seat 361. Screws fasten the planet carrier seat 361, through six intermediate spacer sleeves 381, to the threaded holes on the planet carrier plate 371, and double anti-loosening is formed by spring washers and lock washers. Gaskets are installed at both ends of the planet gear 351 and cooperate with the spacer sleeves 381, and it is fixed between the planet carrier seat 361 and the planet carrier plate 371. Four arc grooves with the same center distance as the threaded holes at the input end of the gearbox body 1802 can be machined on the outer circle of the internal gearbox body 311. A transition connector 391 with internal and external threads and the same diameter as the arc grooves is connected to the threaded holes at the input end of the gearbox body 1802. The outer circle of the connector positions and prevents the internal gearbox body 311 from rotating. Screws and nuts fix the planetary reduction gearbox cover 331, the internal gearbox body 311, and the entire planetary reduction mechanism through the connector 391 to the gearbox body 1802 to form a two-stage reduction valve operating device 600. According to the connection form of the pneumatic or electric connection plate, the planetary reduction gearbox cover 331 can be installed with a pneumatic or electric drive head.

[0065] See Figure 18 , Further, for the two-stage reduction gear operating device 600, remove the sun gear, planet gear, planet carrier seat, planet carrier plate, internal gearbox body, planetary reduction gearbox cover and internal small parts of the planetary reduction device, and retain the helical gear shaft 261. A bearing cover 271 with 4 symmetrically distributed non-uniform lock holes with a small angle adjacent of 30 degrees is fitted with a heavy-duty ball bearing and fastened with screws. The hole groove of the three-jaw impact block 281 is key-connected to the helical gear shaft 261. A handwheel 291 with three equally divided inner claws (the handwheel can be cast or welded) cooperates with the helical gear shaft and the three-jaw impact block and has a swing angle greater than 30 degrees. When impacting, it can make the gear operating mechanism output a larger instantaneous torque. A locking piece 30 is added to the handwheel 291 to lock the operating position of the handwheel. The locking piece has a center pitch circle diameter of 6 equal parts and the same diameter as the 4 lock holes on the bearing cover 271 to achieve handwheel locking, forming a first-stage reduction spiral bevel gear operating device 300 with input impact, handwheel lockable, valve stem nut replaceable, and the gearbox body and bracket sharing the same gearbox seat thread, and the gearbox body not bearing the axial force of the valve stem. According to the connection form of the pneumatic or electric connection plate, the bearing cover 271 can be installed with a pneumatic or electric drive head.

[0066] See Figures 5 to 13 , Figures 17 to 20, for the small-bore or large-size valve body D1 made of forgings, the internal structures and principles of the straight-hole sealing and operating system 700 and the inclined-hole sealing and operating system 800 are the same as above. The operating device is selected from the above different forms of bevel gears or spur gears or operating devices or handwheels according to the actual load. The handwheel direction of the bevel gear operating device is adjusted according to the operating needs.

[0067] As described above, the above are only the preferred embodiments of the present invention, and there is no any formal limitation to the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not used to limit the present invention. Any person skilled in the art can make some modifications or changes to equivalent embodiments by using the technical solution disclosed above within the scope of the technical solution of the present invention. However, as long as it does not deviate from the content of the technical solution of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiments within the spirit and principle of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A compact TY type gate-stop multifunctional 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 there is a first vertical center hole (02) perpendicular to the axis (001) of the inlet and outlet channel (01) and a second oblique center hole (03) inclined to the axis (001), the axis (002) of the first vertical center hole and the axis (003) of the second oblique center hole intersect with the axis (001) of the inlet and outlet channel (01), and the axis (003) of the second oblique center hole (003) and the axis (001) of the inlet and outlet channel (01) are inclined at an angle α ranging from 45° to 60°; the first vertical center hole (02) and the inlet and outlet channel (01) intersect with two parallel valve seat holes (012), the second oblique center hole (03) has a valve seat hole (013) intersecting with the inlet and outlet channel (01), and the lowest point at the upper end and the highest point at the lower end of the inclined valve seat hole are both Located within the range of the inlet and outlet channels (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) are installed 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 processed into a threaded or conical installation valve seat; the high point where the straight outer diameter and the inclined outer diameter intersect is within the range of the channel outer diameter, the first vertical center hole (02) and the second inclined center hole (03) have a common pressure-bearing wall (04), which reduces the length of the valve body, and has respective sealing surfaces, thread diameters, square or round tops and inner cavity holes; the end of the valve body (1) is a welding end or a flange, and the flange or welding end hole is processed into a hole suitable for installing a built-in inclined valve 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 and replaceable valve seat in the inclined center hole and connected to the valve seat hole (013) has two structures: threaded and conical. The inclined flap check valve uses only a conical surface to connect the valve seat (202). The common stop valve or stop valve with an anti-noise mesh cover or lift type or ball check valve uses a universal valve seat (2). The multi-stage regulating valve uses a cylindrical valve seat (201). The valve disc that forms a seal with the valve seat includes a common stop valve disc (3), a inclined flap check valve disc (302), a multi-stage regulating valve disc (301), a stop check valve and a lift type check valve disc (303), a needle type stop valve disc (304), and a ball (310). The head of the valve stem that controls the movement of the valve disc includes a stop valve stem with a hook (4), a stop check valve stem without a shoulder on the head (403 ), a valve stem (401) for a regulating valve with a connection hole on the head, and a pin shaft (402) for an inclined flap check valve; the valve cover is divided into a valve cover with a hole (5) and a valve cover with a blind hole (501). The valve cover with a hole (5) is used for stop valves, needle valves, stop check valves and regulating valves; the blind hole valve cover (501) is used for lift check valves, ball check valves and inclined flap check valves; the anti-noise mesh cover (6) is used for anti-noise and anti-scouring conditions and is installed in an inclined inner cavity hole of a slightly larger size; the sealing ring (7), the screw cover (8, 801), the packing (9), the pressure plate flange (10), the packing sleeve (11), the packing pressure plate (12), the clamping bolt (13), the nut (14), the indicator block (15) and the valve body and valve cover constitute the inclined center hole valve body seal and valve stem seal system (500); In the vertical center hole, connected to the valve seat hole (012) are a wedge-shaped gate valve seat (203) and a parallel gate valve seat (204), a wedge-shaped gate valve seat (207) with a V-shaped regulating port made of integral hard alloy or a sealing surface throttle port welded with hard alloy, and a parallel gate valve seat (208) with a V-shaped regulating port made of integral hard alloy or a sealing surface throttle port welded with hard alloy; the single wedge-shaped gate valve seat (203) or the wedge-shaped gate valve seat (207) with a V-shaped regulating port forms a seal pair. The gate plate (305) and the wedge-shaped left gate plate (306) and the wedge-shaped right gate plate (307) form a sealing pair with the parallel gate valve seat (204) or the parallel gate valve seat (208) with a V-shaped regulating port as the parallel left gate plate (308) and the parallel right gate plate (309); the wedge-shaped left gate plate (306) has a vertical integral or split flat round hook head, and the wedge-shaped right gate plate (307) has a horizontally inserted flat round hook groove. The left gate plate (306) is inserted into the right gate plate (307) and then rotated 90 degrees. A wedge-shaped double gate set is formed which does not disengage but has a slight swing; the parallel left gate (308) has a vertical integral or split flat round hook and a hole for installing a spring, and the parallel right gate (309) has a flat round hook groove for horizontal insertion. The parallel left gate (308) is loaded with a spring and inserted into the parallel right gate (309) and then rotated 90 degrees to form a parallel double gate set which can be supported and does not disengage but has a slight swing; the single gate, double gate and parallel double gate have the same general size for connection with the valve stem; the valve stem (404) controls the single gate or Double gates or parallel double gates; the valve cover is a perforated valve cover (502); the sealing ring (71), screw cover (81), packing (91), pressure plate flange (101), packing gland (111), packing pressure plate (121), clamping bolts (131), nuts (141) and the valve body and valve cover form a vertical center hole valve body seal and valve stem seal system (400); the three types of gates in the vertical hole, single wedge plate, double wedge plate, double flat plate, and two types of valve seats, through hole and V-shaped regulating port, form six types of gate valves; The inlet and outlet passages are equipped with an axial flow check valve seat (206) or a tilted flap check valve seat (202), an axial flow check valve disc (311) that forms a sealing pair with the axial flow check valve seat (206), and an axial flow check valve disc cover (506) with a flow guide cover and a valve stem positioning device; the tilted flap check valve seat (202) forms a sealing pair with the tilted flap check valve disc (302), and forms an assembly with the tilted flap check valve pin shaft (402) and a pair of torsion springs and is installed in the valve seat hole of the passage; The valve seat (202) of the inclined flap check valve has a small-angle conical surface that matches and seals with the valve seat hole of the valve body and a large-angle conical surface for thrust sealing. There are two lugs on the outer circle of the valve seat. Two pin holes on the lugs have axial eccentricity a and radial eccentricity b relative to the sealing conical surface. The sealing conical surface of the valve disc (302) of the inclined flap check valve matches the sealing conical surface of the valve seat and has the same position of the pin holes with axial eccentricity a and radial eccentricity b. The pin (402) has the same radial eccentricity b as the outer diameter envelope surface of the valve seat. The valve disc is equipped with two symmetrical torsion springs with two side surfaces perpendicular to the pin holes and located between the two side surfaces of the valve disc and the arc lugs of the valve seat. The two protruding ends of the torsion spring are respectively in contact with the bottom surface of the valve seat lug and the bottom surface of the side surface of the valve disc, so that the valve disc can automatically reset and seal. The two arc-shaped lugs protruding on the valve seat and the center position meet the requirements of the three-eccentric check valve. The valve seat (201) of the multi-stage regulating valve has a small conical surface that cooperates with the valve seat hole (012) (013) of the valve body for sealing, and the surfaces of the inlet hole, the sealing conical surface, the sealing surface outlet hole, the first and second valve seat partitions, and the end partition 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 that cooperates with the valve seat inlet hole, a sealing conical surface, a narrow groove between the outer diameter and the sealing conical surface, and two groups of small holes in the inlet end cylinder, and a group of small holes near the sealing surface partially falls within the narrow groove width range to form an arcuate small hole area; there are a first valve flap spacer ring that cooperates with the valve seat sealing surface outlet hole, a second and third valve flap spacer rings that cooperate with the first and second valve seat partitions, and an end spacer ring that cooperates with the valve seat end partition, the spacing distance between the valve seat partition and the valve flap spacer is equal, the outer circumferential surfaces of the first valve flap spacer ring, the second and third valve flap spacer rings have labyrinth sealing grooves, and a group of deep labyrinth grooves are provided between the first valve flap spacer ring and the second valve flap spacer ring. The first valve disc spacer and the third valve disc spacer are processed with uniformly distributed small straight holes, and the second valve disc spacer is processed with uniformly distributed small inclined holes. The valve disc end spacer is a cylindrical structure. There is a guide groove on the outer diameter of the cylinder. The groove width of the guide groove is greater than the diameter of the circumferential hole of the valve seat. There are uniformly distributed circumferential holes in the groove. The diameter of the uniformly distributed circumferential holes in the groove is smaller than the diameter of the circumferential hole of the valve seat, and the number of the uniformly distributed circumferential holes in the groove is greater than the circumferential holes in the valve seat. The inner end surface of the cylinder has axial holes uniformly distributed, and the number of the holes is less than the number of the uniformly distributed circumferential holes in the groove. The axial holes are connected with the groove between the third valve disc spacer and the end spacer. There is a hole in the middle of the valve disc that matches the valve stem (401). There is a pin hole connected to the valve stem (401) between the second valve disc spacer and the third valve disc spacer of the valve disc. The position of the pin hole ensures that the end of the valve stem contacts the bottom of the middle hole of the valve disc when closed. The valve disc (301) is movably connected to the valve stem (401) through the pin (407), and the multi-stage regulating valve is controlled by the valve stem.

2. A compact TY type gate-stop multifunctional combination valve according to claim 1, characterized in that: A gear operating device is used, and the characteristics of the gear operating device are as follows: The invention comprises a support rod (16), one end of the support rod (16) is threadedly connected to the mounting screw hole at the top of the oblique center hole of the valve body, and the other end of the support rod (16) has a threaded hole; the diameter distribution of the four-equally divided connecting holes of the gear box seat (17) conforms to the provisions of the ISO 5210 standard, and the connecting holes are in the form of a through hole and a threaded through hole; the gear box body (18) has a screw through hole connected to the gear box seat (17); for the mounting screw hole at the top of the oblique center hole of the valve body conforming to the provisions of the ISO 5210 standard, a long screw (19) passes through the gear box body (18), and the gear box seat (17) is connected and fixed to the support rod (16); for the mounting screw hole at the top of the oblique center hole of the valve body conforming to the provisions of the ISO 5210 standard, a long screw (19) passes through the gear box body (18), and the gear box seat (17) is connected and fixed to the support rod (16); The size of the mounting screw holes on the top of the valve body is divided into four equal parts as specified in the 5210 standard. The transition plate (20) is fixed to the support rod (16) by screws (1901). The screws (1902) pass through the eight-eight-part bolt holes of the transition plate (20) to connect with the gear box seat (1701). The screws (1903) pass through the gear box body (18) to connect with the four-eight-part screw holes on the gear box seat (1701) to form an integral gear operating device. The axial force of the valve stem (4) is transmitted to the valve stem nut (21). The shaft shoulder of the valve stem nut (21) is equipped with a thin plane needle roller bearing on the upper and lower sides. (22), the valve stem 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 stem, and the threaded bearing cover is locked with a set screw. The head of the valve stem nut has a hexagonal surface or keyway surface for transmitting torque, which cooperates with the hexagonal or keyway surface of the spiral bevel gear (24). The O-rings at both ends of the valve stem nut seal the operating device. The spiral bevel gear (24) is connected to 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), which is orthogonally meshed with the spiral gear (24). The spiral gear shaft (26) is equipped with medium and heavy roller bearings, and there is a spacer between the two bearings. The bearings and the spacer are axially fixed on the spiral gear shaft (26) by a spring retaining ring. Most of the heavy roller bearing (32) is fixed in the hole of the gear box (18), leaving a part to position the bearing cover (27), and the assembly of the spiral gear shaft (26) and the bearing parts is fixed to the gear box (18) by screws, nuts and bearing cover (27). There are 4 symmetrical and unevenly distributed lock holes with small angles of 30 degrees adjacent on the bearing cover (27), and the hole groove of the three-claw impact block (28) The handwheel (29) with a three-part inner claw connected to the spiral gear shaft (26) has a swing angle greater than 30 degrees with the impact block. When impacting, the gear operating mechanism outputs a large instantaneous torque. A locking plate (30) is added to the handwheel (29) to lock the handwheel operating position. The locking plate has a central dividing circle with 6 equal parts, and the diameters of the four locking holes on the bearing cover (27) are equal to each other, so that the handwheel is locked. Thus, a first-stage reduction spiral bevel gear operating device (100) is formed. The bearing cover (27) is equipped with a pneumatic or electric drive head in the form of a pneumatic or electric connection plate. For a two-stage transmission operating device with a larger output torque, the bearing cover (27) of the first-stage reduction spiral bevel gear operating device (100) is removed and replaced with an internal gear housing (31). The two ends of the housing (31) are respectively matched with a heavy roller bearing (32) and a planetary reduction housing cover (33). The planetary reduction mechanism is fixed by screws, nuts and the four-equal connection holes at the input end of the gear housing (18). The head size of the sun gear input shaft (34) of the planetary reduction mechanism is the same as that of the spiral gear shaft (26), and a three-claw impact block (28) and an inner three-claw impact handwheel (29) are installed. The planetary carrier for fixing the planetary gear (35) is a combined structure, which consists of a planetary carrier seat (36), a planetary carrier plate (37), The planet carrier seat (36) is keyed to the spiral gear shaft (26). The planet carrier seat (36) has two groups of three-equally distributed holes with different center distances. The two groups of holes with different center distances are respectively installed with center wheels and planet wheels with different numbers of teeth. When other parts remain unchanged, two reduction ratios are achieved. The planet carrier plate (37) has two groups of three-equally divided threaded holes corresponding to the planet carrier seat (36). The screws fasten the planet carrier seat (36) to the screw holes on the planet carrier plate (37) through the six spacers (38) in the middle, and are fastened by the locking nuts. The planet wheels (35) cooperate with the spacers (38) and are fixed to the planet carrier seat (3 6) and the star frame plate (37), four arc grooves with a center distance equal to the screw hole at the input end of the gear box (18) are machined on the outer circle of the internal gear box (31), and a transition connector (39) with internal and external threads having the same diameter as the arc grooves is connected to the screw hole at the input end of the gear box (18), and the outer circle of the connector is positioned to prevent rotation with the arc groove of the internal gear box (31), and the planetary reduction box cover (33), the internal gear box (31) and the entire set of planetary reduction mechanism are fixed to the gear box (18) through the connector (39) to form a two-stage reduction valve operating device (200); the planetary reduction box cover (33) is equipped with a pneumatic or electric drive head in the form of a pneumatic or electric connection plate; One end of the support rod (161) is threadedly connected to the mounting screw hole at the top of the vertical center hole of the valve body, and the other end of the support rod (161) has a threaded hole; the diameter distribution of the four equally divided connection holes of the gear box seat (171) conforms to the provisions of ISO 5210 standard, and the connection holes are in the form of a light through hole and a threaded through hole. The gear box body (181) has a screw through hole connected to the gear box seat (171); for the mounting screw hole at the top of the vertical center hole of the valve body conforming to the provisions of ISO 5210 standard, the long screw (1910) passes through the light through hole of the gear box body (1801) and the gear box seat (171) and is connected and fixed to the support rod (161); for the mounting screw hole at the top of the vertical center hole of the valve body conforming to the provisions of ISO 5210 standard, the long screw (1910) passes through the light through hole of the gear box body (1801) and the gear box seat (171) and is connected and fixed to the support rod (161); The top mounting screw hole of the vertical center hole of the valve body specified in the 5210 standard is used to make a transition connection between the valve body and the gear box seat (171). The hole of the gear box seat is a fully threaded through hole. The screw (1911) passes through the gear box body (1801) and is connected to the upper part of the threaded hole of the gear box seat (171) to form an integral gear operating device. The bolt (1912) passes through the hole of the bracket (2002) and is threadedly connected to the lower part of the gear box seat (171). The stud (1913) and the nut (1914) connect and fix the bracket (2002) to the top mounting screw hole of the vertical center hole of the valve body.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 a thin plane needle bearing (2201) on the upper and lower sides. 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 with a set screw. The head of the valve stem nut has a hexagonal surface or keyway surface for transmitting torque, which cooperates with the hexagonal or keyway surface of the spiral bevel gear (2401). The O-rings at both ends of the nut seal the operating device. The lower shaft and upper hole of the spiral bevel gear (2401) are respectively fixed to the inner hollow shaft ends of the gear box seat (171) and the gear box body (1801). The spiral gear shaft (2601) orthogonally meshing with the spiral 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 gear shaft (2601) by a spring retaining ring. Most of the heavy roller bearings (3201) The gear housing (1801) is fixed in the hole of the gear housing (1801), leaving a portion for positioning the bearing cover (2701), and the assembly of the spiral gear shaft (2601) and the bearing parts is fixed to the gear housing (1801) by screws, nuts and the bearing cover (2701). The bearing cover (2701) has four symmetrical non-uniformly distributed lock holes with small angles of 30 degrees adjacent to each other. The hole groove of the three-claw impact block (2801) is key-connected with the spiral gear shaft (2601), and the handwheel (2901) with three-equal inner claws is connected with the The swing angle between the impact blocks is greater than 30 degrees, and the gear operating mechanism outputs a large instantaneous torque when impacting. A locking plate (30) is added to the handwheel (2901) to lock the handwheel operating position. The locking plate has a central pitch circle with 6 equal parts, and the diameters of the four lock holes on the bearing cover (2701) are equal to each other, so that the handwheel is locked. Thus, a first-stage reduction spiral bevel gear operating device (1000) is formed; the bearing cover (2701) is equipped with a pneumatic or electric drive head in the form of a pneumatic or electric connection plate. Planetary reduction spur gear operating device: For the gear operating device connected to the bracket (2002), the connection between the gear box seat (171) of the first-stage reduction spiral bevel gear operating device (1000) and the connecting bolts (1912) of the bracket (2002) is maintained, the valve stem nut (2101), thin plane needle bearing (2201), and threaded bearing cover (2301) assembly are retained and fixed in the gear box seat (171), and all other parts of the first-stage reduction spiral bevel gear operating device (1000) are removed; the hexagonal or keyway surface of the planet carrier seat (3601) and the head of the valve stem nut (2101) are loosely matched to transmit torque and uniaxial positioning, and 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 sealing of the upper part of the valve stem nut (2101), and the upper O-ring in the upper end hole of the planet carrier seat (3601) realizes the dynamic sealing of the lower part of the center wheel input shaft (3401). The center hole of the center wheel input shaft (3401) passes the valve stem. A single ball bearing is installed in the middle of the center wheel input shaft (3401) to cooperate with the planetary reduction box cover (3301). The upper part of the center wheel input shaft (3401) has a hexagonal or keyway and a thread to install a handwheel (2910) and a handwheel locking protective sleeve (2911). The planet carrier seat (3601) has two groups of three or more evenly distributed holes with different center distances. The two groups of holes with different center distances are respectively installed with center wheels and planetary gearboxes with different numbers of teeth. The planetary gear realizes two reduction ratios while other parts remain unchanged. The planetary carrier plate (3701) has two groups of three equal-divided or more evenly distributed holes corresponding to the planetary carrier seat (3601). The shoulder shafts of six or more planetary shafts (3801) with threads at both ends are matched with the holes of the planetary carrier seat (3601) and the planetary carrier plate (3701) and are fastened and locked with nuts. The planetary gear (3501) is matched with the planetary shaft (3801) and is fixed between two gaskets of the planetary carrier seat (3601) and the planetary carrier plate (3701). Four arc grooves with a center distance equal to that of the gear box seat (171) are machined on the outer circle of the internal gear housing (3101). A transition connector (3901) with internal and external threads having the same diameter as the arc grooves is connected to the gear. The upper part of the threaded through hole of the housing (171) is connected, the outer circle of the connector is positioned with the arc groove of the inner gear housing (3101) to prevent rotation, the planetary reduction housing cover (3301), the inner gear housing (3101) and the entire planetary reduction mechanism are fixed to the gear housing seat (171) through the connector (3901) by screws to form a planetary reduction spur gear valve operating device (2000); the hand wheel (2910) is driven to make the planetary carrier output a low-speed high torque to drive the valve stem nut (2101) to make the valve stem (404) move up and down, and the axial force of the valve stem is limited in the gear housing seat (171) and the threaded bearing cover (2301). The planetary reduction spur gear valve operating device (2000) can achieve two different reduction ratios by replacing the planetary gear and the center gear;The planetary reduction box cover (3301) is equipped with a pneumatic or electric drive head according to the connection form of the pneumatic or electric connection plate; For a large-size dome valve body TY type gate stop valve, its operating device (600) has a circular gear box body (1802) and a gear box seat (1702). The gear box seat (1702) has a full threaded through hole that meets the ISO 5210 standard graduation size. The screw (1904) passes through the gear box body (1802) and is connected and fastened to the upper part of the full threaded through hole of the gear box seat. The bracket (2001) is connected and fastened to the lower part of the full threaded through hole of the gear box seat by a bolt (1905). The stud (1906) and the nut (1907) fix the bracket (2001) to the top of the valve body; the nut shaft (211) has a coarse thread connected to the stem nut (212) and a fine thread connected to two locking rings (213). The threads of different pitches connect the stem nut and the nut shaft and are locked by the locking ring. The ends of the coarse threads of the stem nut and the nut shaft are provided with a set screw (214) to form a differential thread. The distance between the thread and the double-circle locking is reliable to prevent the thread from loosening; when the coarse threads of the nut shaft (211) and the valve stem nut (212) are replaced with keys or splines, the fine threads connected with the two locking rings (213) are still maintained, and the valve stem nut (212) is fixed to the nut shaft (211) with 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 sides 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 the threaded cover (231). The gear box body (1802) does not bear the axial force of the valve stem. The nut shaft (211) and A sliding bearing (215) is arranged between the gearbox seat (1702), the spiral toothed disc (241) is connected to the keyway conical surface of the nut shaft (211), the upper and lower end shafts of the nut shaft (211) are respectively matched with the holes of the gearbox body (1802) and the threaded cover (231) and are sealed with upper and lower O-rings, and a light cylindrical roller bearing (3211) with large radial load capacity and axially limited inner and outer rings and a heavy roller bearing (3210) capable of bearing radial and axial heavy loads is installed on the spiral toothed shaft (261) orthogonally meshed with the spiral toothed disc (241), and a spacer is arranged between the two bearings, and the two bearings and the spacer are axially fixed on the spiral toothed shaft (261) by two spring retaining rings, and the heavy roller bearing The majority of (3210) is fixed in the hole of the gear housing (1802), the protruding portion of the heavy roller bearing (3210) is matched with the hole of the transition ring (3212), the lower end of the internal gear housing (3101) is matched with the outer circle of the transition ring (3212) and presses the heavy roller bearing (3210), the upper end of the internal gear housing (3101) is matched with the planetary reduction box cover (331), the planetary reduction mechanism is fixed by screws, nuts and the four-equal connection holes at the input end of the gear housing (1802), the head shaft and keyway of the sun gear input shaft (341) of the planetary reduction mechanism are installed with a three-claw impact block (281) and an inner three-claw impact handwheel (291);The planet carrier for fixing the planetary gear (351) is a combined structure, which is composed of a planet carrier seat (361), a planet carrier plate (371), 6 pairs of spacers (381) and screw spring washers, and a locking washer corresponding to the two sets of center holes of the planet carrier seat; the planet carrier seat (361) is keyed to the spiral gear shaft (261), and the planet carrier seat (361) has two groups of three-equally distributed holes with different center distances, and the two groups 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 reduction ratios are realized, the planet carrier plate (371) has two groups of three-equally divided threaded holes corresponding to the planet carrier seat (361), and the screws fasten the planet carrier seat (361) to the screw holes on the planet carrier plate (371) through the six spacers (381) in the middle, and the spring washers and locking washers form a double anti-loosening, and the planetary gear The two ends of (351) are equipped with gaskets and spacers (381), which are fixed between the star frame seat (361) and the star frame plate (371). Four arc grooves with a center distance equal to the screw hole at the input end of the gear box (1802) are machined on the outer circle of the internal gear box (311). A transition connector (391) with internal and external threads having the same diameter as the arc groove is connected to the screw hole at the input end of the gear box (1802). The outer circle of the connector is positioned to prevent rotation with the arc groove of the internal gear box (311). The planetary reduction box cover (331), the internal gear box (311) and the entire set of planetary reduction mechanism are fixed to the gear box (1802) through the connector (391) to form a two-stage reduction valve operating device (600); the planetary reduction box cover (331) is equipped with a pneumatic or electric drive head in the form of a pneumatic or electric connection plate; For the secondary reduction gear operating device (600), the center wheel, planetary gear, planetary carrier seat, planet carrier plate, internal gear housing, planetary reduction box cover and internal small parts of the planetary reduction device are removed, and the spiral gear shaft (261) is retained. The bearing cover (271) with four symmetrical non-uniform lock holes with small angles of 30 degrees adjacent to each other is matched with a heavy ball bearing and fastened with screws. The hole groove of the three-claw impact block (281) is key-connected with the spiral gear shaft (261). The handwheel (291) with three-equally divided inner claws is connected with the spiral gear shaft (261). The gear shaft and the three-claw impact block cooperate and have a swing angle greater than 30 degrees. When impacting, the gear operating mechanism outputs a large instantaneous torque. Adding a locking plate (30) on the handwheel (291) can lock the handwheel operating position. The locking plate has a central dividing circle diameter of 6 equal parts, which is equal to the diameter of the four lock holes on the bearing cover (271), so that the handwheel is locked to form a first-stage reduction spiral bevel gear operating device (300); the bearing cover (271) is equipped with a pneumatic or electric drive head in the form of a pneumatic or electric connection plate.

3. A compact TY type gate-stop multifunctional combination valve according to claim 1 or 2, characterized in that: For small-diameter or large-size valve bodies using forgings, the operating device selects different forms of bevel gears or spur gears or operating devices or handwheel operations according to the actual load, and the handwheel direction of the bevel gear operating device is adjusted according to the operating needs.

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