Expansion pipe sealing valve

Abstract

According to the scheme, the device is mainly applied to conveying of media such as gas or liquid or particulate matter, and is particularly suitable for conveying of the media such as gas or powder or particulate matter or sludge or conveying of the media in a negative pressure state; according to the scheme, control over the valve is achieved through the change of an expansion pipe valve seat in the sealing execution assembly in the gas or liquid charging and discharging process; when external equipment is inflated or liquid is inflated, the expansion pipe valve seat expands due to inflation or liquid, the medium circulation cavity in the valve body is closed, and the valve is closed; when external equipment is not filled with air or liquid or external equipment is not filled with air or liquid, the expansion pipe valve seat is kept in an original state under the action of self-elasticity, a cavity channel for medium circulation is formed in the valve body, the medium flows in a valve cavity, and the valve is opened; or the amount of filled gas or liquid is adjusted, the cross sectional area of the expanded expansion pipe valve seat is adjusted, the size of the cross sectional area of the cavity channel in the valve cavity is controlled, and the flow of the valve is adjusted.

Description

Technical Field

[0001] The present invention relates to the field of valves, and specifically to an expansion pipe sealing valve;

[0002] It is mainly used in the transportation of media such as gas, liquid or particles, and is particularly suitable for the transportation of media such as gas, powder, particles or sludge, or the transportation of media under negative pressure. Background Art

[0003] This case is based on the following three inventions, namely

[0004] An expansion pipe sealing valve with application number 202020507448.3;

[0005] An eccentric expansion pipe sealing valve with application number 202220163279.5;

[0006] An eccentric expansion pipe sealing valve with application number 202220163278.0;

[0007] On this basis, the shortcomings of the original invention are summarized and sorted out, and further creative improvements are made.

[0008] First, the valve bodies of the above three valves are relatively limited, and the valve bodies of the valve structures of different embodiments are relatively complicated to process and have high costs.

[0009] Second, the above three valves have different degrees of material accumulation problems in the valve body, which will cause the expansion tube valve seat to be deformed and damaged under pressure, or the expansion tube assembly itself to be deformed, move, deviate, and get stuck.

[0010] Third, the expansion tube assembly requires the support of different parts of the valve itself in combination with the valve body to slide smoothly. Under the action of the medium pressure, some matching parts will gradually deform, and finally the expansion tube assembly will not move smoothly, or even fail and get stuck, causing the valve to fail.

[0011] At the same time, the invention of this case is compared with other valves, such as butterfly valves, knife gate valves, ball valves and other valves;

[0012] It has obvious advantages when conveying media such as gas, powder, sludge or mixed sludge water, pulp, or when used in special working conditions such as the bottom of papermaking slag remover tank, the bottom of aluminum plant filter press tank, and the bottom of silo tank for storage and transportation of grain or chemical particles.

[0013] Fourthly, it can avoid powder accumulation inside the valve body when conveying powder media.

[0014] The fifth is that the seal adopts face sealing, that is, the valve body and the valve seat are in direct surface contact to form a contact surface seal, which has a large sealing area and a good sealing effect.

[0015] Compared with butterfly valve, butterfly valve adopts valve plate and valve seat contact, the seal is a line seal between the edge of valve plate and valve seat, and the sealing contact surface is small.

[0016] Compared with the ball valve, the ball valve uses the valve ball to contact the sealing ring. The seal is formed by the contact surface between the valve ball surface and the sealing ring. Although the sealing contact surface is larger than that of the butterfly valve, the sealing surface is still small, and the volume and weight are relatively large, and the price is high.

[0017] Sixth, there is no direct contact friction and wear between the butterfly valve seat and valve plate, or the ball valve ball or sealing ring, or the valve plate and sealing ring of the gate valve.

[0018] For example, in angle-turn valves such as butterfly valves and ball valves, there is rotational friction contact between the valve seat and the butterfly valve plate, and between the valve ball and the valve seat pressure ring, which will wear the valve plate, valve ball or valve seat or valve seat pressure ring; when the valve plate and valve body are in contact with hard medium foreign matter in the cavity, such as stones or iron filings, the sealing surface of the valve plate or valve seat will be damaged.

[0019] For example, linear stroke valves such as knife gate valves or gate valves have linear motion contact between the valve plate and the pressure ring or packing, resulting in linear contact friction and wear.

[0020] Seventh, in response to the material jamming phenomenon that occurs when butterfly valves, ball valves, knife gate valves, gate valves and other valves are used at the bottom of silos, the invention in this case effectively reduces the probability of material jamming, or does not affect the opening and closing of the valve when material jamming occurs, and has little impact on the conveying medium. Summary of the invention

[0021] The present solution aims at the above-mentioned problem, overcomes at least one disadvantage, and provides an expansion pipe sealing valve to solve the problem.

[0022] To achieve the above objectives, this solution provides the following technical solutions.

[0023] The invention in this case is an expansion pipe sealing valve.

[0024] The expansion pipe sealing valve comprises a sealing actuator component, a valve body component, a sealing component and a connecting component.

[0025] The sealing actuators include:

[0026] The valve body is connected with an end cover, a connector, a plug, a piston rod, a static piston, a dynamic piston, an expansion pipe valve seat, a valve seat clamp, a connecting extension pipe (not shown), and a protective cover (a soft protective cover and a hard protective cover).

[0027] The sealing actuator components include:

[0028] Execute external equipment, such as the solenoid valve or pneumatic positioner in the air source control component at the front end of the valve in the entire air circuit equipment, and execute the process of filling or releasing air or liquid in the valve by the air or liquid circuit controlled by the above spare parts.

[0029] Changes in the expansion pipe valve seat in the sealing actuator during the process of filling or releasing gas or liquid;

[0030] That is, when the external equipment is inflated with gas or liquid, the valve seat of the expansion pipe expands due to the inflation of gas or liquid, closing the medium flow cavity inside the valve body and closing the valve;

[0031] When the external equipment is not inflated with air or liquid, the expansion tube valve seat maintains its original state under the action of its own elastic force, forming a cavity channel for the medium to flow inside the valve body, so that the medium can flow in the valve cavity, which is equivalent to opening the valve;

[0032] Or when the expansion tube valve seat is inflated with gas or liquid, the amount of gas or liquid filled is adjusted. The expansion tube valve seat will expand to different sizes as the amount of gas or liquid filled changes. The cross-sectional area of ​​the expansion tube valve seat after expansion is different, and the cross-sectional area of ​​the cavity channel in the closed valve cavity is different, thereby achieving different flow cross-sectional areas, and then adjusting the valve medium flow, achieving full flow of the medium or flow size adjustment;

[0033] The above is the process of closing, opening and adjusting the flow of medium by the valve.

[0034] Because the function it realizes is similar to the function of the actuator in other valve controls, it is named as the sealed actuator.

[0035] The moving piston in the sealing actuator reciprocates along the piston rod in the sealing actuator during the process of filling or releasing gas or liquid in the expansion tube valve seat, that is, during the process of opening and closing the valve, similar to the movement of a piston. And the control process of medium circulation, cutting off or regulating is mainly realized by the expansion and contraction process of filling or releasing gas or liquid in the expansion tube valve seat. In view of this, the valve in this case can also be called a piston-type expansion tube sealing valve.

[0036] Unless there is a special description or reference in the specification of this case to point out the difference with this case, the "expansion tube sealing valve" or "piston type expansion tube sealing valve" in the text refers to the invention of this case.

[0037] Sealed actuator (1000), attached to this case Fig.11 ,include:

[0038] The valve body is connected to an end cover (1200), a connecting piece (1210), and a plug (1220);

[0039] Piston rod: a slot-type air inlet piston rod (1230) or a hole-type air inlet piston rod (1240), either one is selected;

[0040] Static piston (1250), dynamic piston (1260), expansion pipe valve seat (1500), valve seat clamp (1270);

[0041] Connecting extension tube (1250) Fig.58 As shown in, as an option, installed or not installed;

[0042] Protective cover: A soft protective cover (1280) and a hard protective cover (1290) are optional. One of them can be installed or not.

[0043] Valve body connection end cover (1200), attached Fig.12 Main view, attached Fig.13 It is a top view;

[0044] The valve body connection end cover (1200) is a circular plate, similar to a blind plate, but with a through hole in the middle;

[0045] From the top view, the through hole in the middle of the valve body connecting the end cover is named as the connecting hole, which is used as a connecting channel, and the connecting piece (1210) is connected to or passes through it. Preferably, the hole has a reserved thread; optionally, the hole has no reserved thread;

[0046] Preferably, there is a connection hole reserved for the static piston around the connection hole; optionally, there is no connection hole reserved for the static piston around the connection hole;

[0047] Preferably, the static piston connecting hole has a reserved threaded hole; optionally, the static piston connecting hole has no reserved threaded hole.

[0048] From the top view, preferably, the edge of the valve body connection end cover has a reserved flange connection hole for connecting the valve body;

[0049] From the top view, optionally, the outermost edge of the valve body connection end cover has a reserved thread for connecting the valve body.

[0050] Connector (1210), attached Fig.14 Main view, attached Fig.16 For top view, Fig.15 The middle section view of the main view;

[0051] From the three views, the component is a three-section cylindrical structure, divided into three parts: upper, middle and lower. Figure 1 As can be seen, the upper part extends out of the valve body connection end cover (1200) and is outside the valve body of the complete valve assembly; the middle part and the lower part are inside the valve body connection end cover (1200), that is, inside the valve body of the complete valve assembly. The interior of the connector (1210) is hollow and is used for ventilation or liquid.

[0052] Preferably installed on the upper end of the piston rod, for example Fig.29As shown, the upper cylinder has threads inside and outside, which is used to connect the pipe connector of the external gas or liquid input; the middle cylinder has a reserved threaded hole or the edge is processed with threads, which is used to connect the valve body connection end cover (1200) or the static piston (1250); the lower cylinder has threads inside and outside, which is used to connect the piston rod: the groove-type air inlet hole piston rod (1230), or the hole-type air inlet hole piston rod (1240), any one of which can be selected for connection.

[0053] Optionally, it can be installed at the lower end of the piston rod, e.g. Fig.31 The position shown; that is, the upper cylinder, with internal and external threads, the lower cylinder, with internal and external threads, is used to connect the piston rod: the groove-type air inlet piston rod (1230), or the hole-type air inlet piston rod (1240), any one connection is selected;

[0054] The middle cylinder is used as a stopper for the movement of the moving piston (1260) to limit the maximum stroke of the moving piston (1260);

[0055] The lower cylinder has threads inside and outside for connecting the plug (1220).

[0056] Plug (1220); attached Fig.17 Main view, attached Fig.18 For top view, Fig.19 The middle section view of the main view;

[0057] From the combination of the three views, the component is a machined two-section cylindrical structure, divided into upper and lower parts, with a solid structure and no ventilation.

[0058] The upper part has threads for connecting the piston rod: a groove-type air inlet piston rod (1230) or a hole-type air inlet piston rod (1240), either one of which can be connected; it can also be used to connect Fig.31 A connecting piece (1210) at the lower end of the piston rod;

[0059] The lower portion is used as a stopper for the movement of the moving piston (1260), limiting the maximum stroke of the moving piston (1260), for example Fig.29 Position shown.

[0060] Piston rod:

[0061] Grooved air inlet piston rod (1230), with Fig.24 Main view, attached Fig.23 For top view, Fig.25 The middle section view of the main view;

[0062] Hole type air inlet piston rod (1240), attached Fig. 27 Main view, attached Fig.26 For top view, Fig.28 The middle section view of the main view;

[0063] The piston rod has an opening or a slot; the hole or the slot is located outside the travel range of the moving piston (1250), and the travel range refers to the displacement distance between the holding point and the limit point, that is, in the upper area of ​​the main view.

[0064] According to the front view, the upper and lower parts of the piston rod have threads inside and outside, which are used to connect the connector (1210) or the plug (1220)

[0065] Static piston (1250), attached Fig.33 Main view, attached Fig.34 It is a top view;

[0066] From the two figures, the static piston (1250) is a machined two-stage structural component, divided into upper and lower parts, with a through hole inside and a groove in the middle. An O-ring or a piston ring or a skeleton-type sealing ring is arranged in the groove to prevent gas or liquid leakage from entering from the piston rod.

[0067] The upper part is provided with a connection hole, which is threaded and used for connecting the valve body to the end cover (1200);

[0068] The upper part is provided with a connecting thread for connecting the valve seat clamp (1270);

[0069] The lower part has a pagoda-shaped connection pattern for connecting the expansion pipe valve seat (1500). The pagoda-shaped connection pattern is the external structure of a general pipe connector for connecting air pipes and is a common product in the market.

[0070] Moving piston (1260), attached Fig.35 Main view, attached Fig.36 It is a top view;

[0071] From the two figures, the movable piston (1260) is a machined two-section structural component, divided into upper and lower parts, with a through hole inside and a groove in the middle. An O-ring or a piston ring or a skeleton-type sealing ring is arranged in the groove to prevent gas or liquid leakage from entering from the piston rod.

[0072] The upper part is processed with threads on the outside for connecting the protective sleeves: a soft protective sleeve (1280) and a hard protective sleeve (1290), and one of them can be installed or not.

[0073] The upper part is provided with a connecting thread for connecting the valve seat clamp (1270);

[0074] The lower part has a pagoda-shaped connection pattern for connecting the expansion pipe valve seat (1500). The pagoda-shaped connection pattern is the external structure of a general pipe connector for connecting air pipes and is a common product in the market.

[0075] Optionally, the static piston and the dynamic piston have the same structure, so they can be used interchangeably.

[0076] Optionally, the outer sides of the universal static piston and the movable piston are reserved with connection holes or grooves for the sensing parts (6300); the holes may be threaded or not threaded, and when the threads are not used, they are blocked with a top screw.

[0077] Expansion pipe valve seat (1500), attached Fig.21 Main view, attached Fig. 20 For top view, Fig. 22 The middle section view of the main view;

[0078] The expansion pipe valve seat is preferably made of elastic material, such as soft materials such as rubber and silicone.

[0079] The shape is preferably a circular tube;

[0080] The cross section is preferably circular, i.e. Fig. 20 shape, hollow inside; the cross section can also be square, elliptical or polygonal, etc. The expansion pipe valve seat is preferably a single-layer structure;

[0081] Or the expansion tube valve seat can be optionally a multi-layer structure, which can also be called a nested structure, such as a nested circular tube with one layer inside another.

[0082] For example, the outer layer is a tubular expansion valve seat with a length of 200mm, a thickness of 5mm, an outer diameter of 100mm, and an inner diameter of 90mm; the inner layer is a tubular expansion valve seat with a length of 200mm, an outer diameter of 90mm, a thickness of 3mm, and an inner diameter of 84mm. The inner layer is inserted into the outer layer and embedded together to form a double-layer expansion valve seat;

[0083] According to the above example, nested layers can be added to form 3 or 4 layers or even N layers of expansion pipe valve seats;

[0084] That is, the number of expansion tube layers is N, and N is a positive integer greater than or equal to 2.

[0085] The circular cross section in the above example can also be made into a specially designed nested expansion pipe valve seat in a square, elliptical or polygonal shape.

[0086] An air guide tube can be installed between each layer of the expansion tube valve seat. The air guide tube is a metal tube or other tubular material, such as plastic or PTFE, PVC, etc. The air guide tube is connected to an external sensor through a reserved hole of the valve body connection end cover (1200) to detect the state of the expansion tube valve seat. For example, in the case of a double-layer expansion tube valve seat structure, the air guide tube is connected to an external pressure sensor. In this way, when the inner layer is broken, the pressure of the gas or liquid will be transmitted to the sensor through the air guide tube, thereby judging that the valve seat is damaged; or several air guide tubes are installed to connect to a water vapor sensor or a sensitive medium induction sensor. When the outer layer is worn and broken, different sensors sense the medium and send out an alarm.

[0087] For example, a multi-layer sensor is filled with gas of relatively low pressure between layers, such as 0.2 bar nitrogen, and the air guide tube is connected to an external pressure sensor;

[0088] When the expansion tube valve seat is torn, causing nitrogen leakage, the pressure sensor alarms, thereby determining the status of the valve seat.

[0089] The multi-layer expansion tube valve seat preferably has different thicknesses in each layer, thereby avoiding the situation where the valve seats are damaged simultaneously due to fatigue wear when the thicknesses are the same, resulting in contact between the medium and the driving gas or liquid.

[0090] Multi-layer expansion pipe valve seat, optional, each layer has the same thickness.

[0091] The multi-layer expansion pipe valve seat is preferably made of wear-resistant rubber, silicone rubber or plastic rubber or other wear-resistant materials on the outer layer;

[0092] The multi-layer expansion pipe valve seat is preferably made of a wear-resistant rubber or silicone or plastic rubber or other high elastic deformation material with a larger elastic deformation coefficient than the outer layer material;

[0093] Multi-layer expansion pipe valve seat, optional, inner and outer layers of the same material.

[0094] The expansion pipe valve seat is made of elastic material;

[0095] The expansion pipe valve seat is in the shape of a circular tube;

[0096] The expansion pipe valve seat is a single-layer structure; or a multi-layer structure, that is, the number of expansion pipe layers is N, and N is a positive integer greater than or equal to 2;

[0097] When the expansion pipe valve seat has a multi-layer structure, each layer of the expansion pipe valve seat has a different thickness;

[0098] When the expansion pipe valve seat has a multi-layer structure, each layer of the expansion pipe valve seat has the same thickness;

[0099] When the expansion pipe valve seat has a multi-layer structure, the outer layer of the expansion pipe valve seat is made of wear-resistant material;

[0100] When the expansion tube valve seat has a multi-layer structure, the expansion tube valve seat has an inner layer made of a material having an elastic deformation coefficient greater than that of an outer layer;

[0101] When the expansion tube valve seat has a multi-layer structure, the expansion tube valve seat has inner and outer layers made of the same material.

[0102] Valve seat clamp (1270); attached Fig.37 Main view, attached Fig.38 For top view, Fig.39 It is the left view, attached Fig.40 The middle section view of the main view;

[0103] The valve seat clamp (1270) is hollow and has threads inside, and is used to connect the static piston (1250) or the dynamic piston (1260)

[0104] When the expansion pipe valve seat (1500) is connected to the static piston (1250) or the dynamic piston (1260), the valve seat clamp (1270) designed and processed in this case is connected and fixed by threads or bolts.

[0105] When the expansion pipe valve seat (1500) is connected to the static piston (1250) or the dynamic piston (1260), it can also be fixed by using common market products such as a pipe hoop, a clamp, a ring hoop or a throat hoop;

[0106] The pipe clamp or clip or ring clamp or throat clamp adopts products of common knowledge in the market, such as pipe clamp or clip or ring clamp or throat clamp etc. conforming to DIN 3017 standard.

[0107] Connecting extension tube (1250) Fig.58 As shown in the figure; it is a tube, which is hollow inside, has threads or flanges on the top and bottom, and is connected to the valve body connection end cover (1200) through threaded connection or flange connection,

[0108] Connecting extension tube (1250) Fig.58 As shown in ; it is a tube, which is hollow inside, has threads or flanges on the top and bottom, and is connected to the connector (1210) through a threaded connection or a flange connection;

[0109] Protective cover: A soft protective cover (1280) and a hard protective cover (1290), either one of which can be installed, or no protective cover can be installed.

[0110] Soft protective cover (1280), with Fig.45 Main view, attached Fig.44 It is a top view;

[0111] Generally, woven fabrics such as chemical fiber cotton and linen or soft materials such as rubber silicone are used, fixed on two circular plates, and the two circular plates are respectively connected to the moving piston (1260) and the plug (1220), and can move with the moving piston, stretch open, or shrink together; to prevent powder and other media from contacting or adhering to the piston rod: groove-type air inlet hole piston rod (1230), or hole-type air inlet hole piston rod (1240). Fig.46 The positional relationship between the soft protective sleeve and different components is shown. For the sake of clear identification, the expansion tube valve seat (1500) is not drawn.

[0112] The soft protective cover is made of soft material and fixed on two circular plates. The two circular plates are respectively connected to the moving piston and the plug and move with the moving piston; stretch to open or contract;

[0113] The hard protective sleeve is connected to the moving piston through threads or bolts and moves accordingly. The hard protective sleeve is made of hard material.

[0114] Hard protective case (1290), with Fig.42 Main view, attached Fig.41 For top view, Fig.43 The main view is in the middle section view;

[0115] The hard protective sleeve (1290) is connected to the moving piston (1260) by threads or bolts and moves accordingly. Fig.47 The positional relationship between the hard protective sleeve and different components is shown. For the sake of clear identification, the expansion tube valve seat (1500) is not drawn.

[0116] The hard protective sleeve (1290) is generally made of metal, organic glass, PTFE, plastic, nylon, wood and other hard materials to prevent liquid and other media from contacting the piston rod: the groove-type air inlet piston rod (1230), or the hole-type air inlet piston rod (1240).

[0117] The valve body assembly (2000) includes: a main valve body and an extended valve body.

[0118] The valve body assembly (2000) is composed of the following two methods:

[0119] The first method has only one main valve body, which is an independent valve body assembly (2000)

[0120] The second method is to connect the main valve body and the extension valve body together to form a valve body assembly (2000)

[0121] Among them, the main valve body and the extended valve body have the following features:

[0122] The main valve body in the valve body assembly (2000) is named M-way, and there is only one M-way main valve body; there are through holes inside the main valve body M-way, and the number of through holes is S, and S is an integer greater than or equal to 3.

[0123] The main valve body is named M-port. The main valve body has only one M-port.

[0124] The main valve body M has through holes inside, the number of the through holes is S, and S is an integer greater than or equal to 3.

[0125] When S=3, a section of pipe with three through holes includes elbow tee, reducer tee, straight tee, oblique tee, etc.; that is, M-way is a three-way valve body with 3 through holes;

[0126] When S=4, a section of pipe with four through holes includes elbow cross, reducer cross, straight pipe cross, oblique pipe cross, etc.; that is, M-way is a four-way valve body with 4 through holes;

[0127] When S=5, a section of pipe with five through holes includes a curved pipe five-way, a reducer five-way, a straight pipe five-way, an oblique pipe five-way, etc.; that is, M-way is a five-way valve body with 5 through holes;

[0128] The number of through holes S changes continuously according to the above rule; from 3, 4, ..., to S; S is an integer greater than or equal to 3.

[0129] That is, the M-way is an S-way valve body with S through holes, and the M-way described above is the main valve body.

[0130] The extended valve body in the valve body assembly (2000) is named KN-pass.

[0131] It is composed of K N combinations, that is, 1N, 2N, ..., up to KN, where K is an integer greater than or equal to 0;

[0132] The N-through holes of the extended valve body have a through hole number of T, where T is an integer greater than or equal to 0.

[0133] An extended valve body is composed of K N ports, and is described as an extended valve body containing K N ports; that is, 1N, 2N, ..., up to KN;

[0134] K is an integer greater than or equal to 0, that is:

[0135] When K = 0, there is no extended valve body;

[0136] When K = 1, there is 1 extended valve body;

[0137] When K=2, there are 2 extended valve bodies;

[0138] …

[0139] There are K extended valve bodies up to K, where K is an integer greater than or equal to 0.

[0140] The N-through holes of the extended valve body have a through hole number of T, where T is an integer greater than or equal to 0.

[0141] When T = 0, there is no path, which is equivalent to a blind plate; that is, N is a blind plate;

[0142] When T=1, there is a through diameter, and the other end is closed, which is equivalent to a section of a one-side closed tube; that is, N-pass is a section of a one-side closed tube;

[0143] When T=2, a section of pipe connected on both sides includes elbows, reducers, straight pipes, V-tubes, etc.; that is, N-way is a section of two-way pipe;

[0144] When T=3, a section of pipe with three through holes includes elbow tees, reducer tees, straight tees, oblique tees, etc.; that is, N through holes is a section of tee pipe;

[0145] When T=4, a section of pipe with four through holes includes elbow cross, reducer cross, straight cross, oblique cross, etc.; that is, N through holes is a section of cross pipe;

[0146] T changes continuously according to the above rule; from 0, 1, 2, 3, 4, ..., to T; T is an integer greater than or equal to 0.

[0147] That is, the extended valve body N-way is a T-way valve body with T through holes, and the N-way described above is an extended valve body.

[0148] Each of the above KN passes is independent of each other because of the different K values;

[0149] At the same time, the T value of each KN pass is determined according to the design, and the T value is an arbitrary integer greater than or equal to 0;

[0150] Therefore, N-pass valves with different K values ​​are independent of each other, and their T-pass valve bodies can have the same or different number of holes T as other N-pass valves.

[0151] For example, the extended valve body 1N may be a two-way pipe; the extended valve body 2N may also be a two-way pipe, or 2N may be a three-way pipe or a four-way pipe, and each of the N-way pipes is independent.

[0152] Complete valve body assembly:

[0153] Example 1: Fig.100 Illustrated embodiment

[0154] The main valve body M is a three-way valve, i.e. a three-way valve body with the number of through holes S=3;

[0155] Extension valve body, K = 2, that is, the valve contains 2 N-way extension valve bodies;

[0156] Among them, 1N-way is a three-way valve body with 3 through holes, which is a three-way;

[0157] Among them, 2N-way is a two-way valve body with 2 through holes, which is a two-way;

[0158] Add the main valve body to form a complete valve body (2000) in the figure;

[0159] The 1N-way, i.e. the three-way, is connected to the lower end of the main valve body, i.e. the opposite side of the connection end of the sealing actuator (1000).

[0160] The 2N-way, i.e. the two-way, is connected to the upper end of the main valve body, i.e. the sealing actuator connection end (1000).

[0161] It is equivalent to adding a section of extension pipe to the upper end of the main valve body, that is, the sealing actuator connection end (1000); and adding a tee to the lower end, that is, the opposite side of the sealing actuator connection end (1000). The main valve body and the extension valve body are combined together to form a complete valve body with three channels. This valve body is an extended combined valve body. There are two ways of application:

[0162] When the remaining unconnected holes of the main valve body of the valve body are used as the medium inlet, the two unconnected holes of 1N pass are used as the medium outlet, and the valve is a one-inlet and two-outlet type.

[0163] When the remaining unconnected holes of the main valve body of the valve body are used as the medium outlet, the two unconnected holes of 1N pass are used as the medium inlet, and the valve is a two-inlet and one-outlet type.

[0164] The sealing components include:

[0165] A sealing gasket connected between the main valve body and the extension valve body; or Figure 1 The sealing assembly (3000), i.e. the seal between the main valve body tee (2050) and the sealing actuator assembly (1000); or the sealing ring, sealing gasket, wrapping belt, etc. connected between the various components of the sealing actuator assembly (1000); are generally well-known products in the market.

[0166] The connection components include:

[0167] The connecting bolts, nuts, gaskets, etc. between various parts are generally well-known products in the market.

[0168] The expansion pipe sealing valve includes a sealing actuator assembly (1000) and a valve body assembly (2000) as well as a sealing assembly (3000) and a connecting assembly (4000), and the connection method thereof is as follows.

[0169] by Fig.11 An example is provided, which is a connection form of a sealing actuator (1000);

[0170] In addition, the piston rod assembly is a sealing actuator assembly (1000) that lacks a valve body connection end cover (1200). It is an intermediate state assembly in the assembly process of the sealing actuator assembly (1000). Because it has different forms, it is described as follows.

[0171] First, according to Fig.48 , a connecting piece (1210) is connected to the upper part of the hole-type air inlet piston rod (1240); the connecting piece (1210) and the static piston (1250) are connected, and then the expansion pipe valve seat (1500) is inserted into the static piston (1250);

[0172] Secondly, according to Fig.49 , continue to install two valve seat clamps (1270);

[0173] Again according to Fig.50 , install the movable piston (1260) to connect the expansion pipe valve seat (1500), and then install the plug (1220) at the lower end of the hole-shaped air inlet piston rod (1240);

[0174] Finally, according to Fig.51 , install two valve seat clamps (1270), respectively connect the static piston (1250) and the dynamic piston (1260), to form Fig.54 The piston rod assembly (1110) Fig.55 A cross-sectional view thereof;

[0175] In addition to the above, optional extension tube (1250) Fig.58 As shown in , a piston rod assembly (1140) is formed;

[0176] If the piston rod (1240) replaces the plug (1220) with a connector (1210) and connects the plug (1220) at the lower end, Fig.52 Piston rod assembly (1100), Fig.53 A cross-sectional view thereof;

[0177] Fig.56 It is a cross-sectional view of the piston rod assembly (1120), that is, the piston rod assembly (1110) is removed from the plug (1220) and connected to the hard protective sleeve (1290);

[0178] Fig.57 is a cross-sectional view of the piston rod assembly (1130), i.e., the piston rod assembly (1110), connected to the soft protective sleeve (1280);

[0179] Different piston rod assemblies, part numbers (1100), (1110), (1120), (1130), (1140), are connected to the valve body by bolts or threads and are sealed with gaskets to form a complete sealing actuator assembly (1000);

[0180] The sealing actuator assembly (1000) can be connected to any one of the piston rod assemblies (1100), (1110), (1120), (1130), (1140).

[0181] The valve body assembly (2000) comprises:

[0182] In the first method, the main valve body is independently composed;

[0183] The second method is composed of a main valve body and an extended valve body combination;

[0184] The sealing actuator assembly (1000) and the valve body assembly (2000) are connected via a connecting assembly (4000), and each connecting part is installed with a sealing assembly (3000) as required, thereby forming a complete expansion pipe sealing valve.

[0185] The working principle of the expansion pipe sealing valve is as follows:

[0186] Figure 1 The invention is a cross-sectional view of an expansion tube sealing valve whose main valve body is composed of a three-way valve body, comprising a sealing actuator assembly (1000) and a main valve body (2050), a sealing assembly (3000) and a connecting assembly (4000);

[0187] Figure 2 This is his left view. Figure 3 It is his main view. Figure 4 It is his top view;

[0188] Figure 5 yes Figure 4 The cross-sectional structure along B, B' when the valve is open is shown. Figure 7 yes Figure 2 The cross-sectional view structure along A, A' when the valve is open is shown;

[0189] Figure 6 yes Figure 4 The structure of the cross-sectional view along B, B' when the valve is closed. Figure 8 yes Figure 2 The cross-sectional view structure along A, A' when the valve is closed is shown;

[0190] Fig. 9 The schematic diagram is a diagram showing that when the sealing actuator (1000) is not inflated with air or liquid, the expansion tube valve seat (1500) is not expanded, the moving piston (1260) is at the holding point position, and the expansion tube valve seat (1500) is in the original state, that is, the valve open position; and the limit point is at the blocking position of the connecting piece (1210); Fig.10 The schematic diagram is a diagram showing that when the sealing actuator (1000) is inflated with air or liquid, the expansion tube valve seat (1500) expands, the movable piston (1260) is at the limit position, i.e., the blocking position of the connecting piece (1210), i.e., the valve closing position, and the limit position is at the position of the connecting piece (1210); the schematic diagram showing the position of the piston rod (1240) at the hole-type air inlet hole when the holding point is inflated with air or liquid;

[0191] The holding point refers to the normal state when the sealing actuator (1000) is not inflated with air or liquid, that is, when the expansion pipe valve seat (1500) is not expanded, and each component is in its initial position. Fig. 9 The position where the lower edge of the movable piston (1260) contacts the piston rod is defined as the holding point.

[0192] The limit point refers to the maximum value of the designed air pressure, expansion size and displacement distance when the sealing actuator (1000) is inflated with air or liquid, that is, after the expansion tube valve seat (1500) is expanded, and the expansion tube valve seat (1500) is in close contact with the inner wall of the valve body assembly (2000) when it is consistent with the design, and each component is in a normal state at the designated position of the design, such as Fig.10 The position where the lower edge of the movable piston (1260) contacts the connecting piece (1210) or the plug (1220) is defined as the limit point.

[0193] At the same time through Fig. 9 and Fig.10 It can be seen that there is a displacement distance between the holding point and the limit point.

[0194] Changes in the process of filling or releasing gas or liquid through the expansion pipe valve seat (1500) in the sealing actuator (1000);

[0195] That is, when the external device is inflated with gas or liquid, the expansion pipe valve seat (1500) expands due to the inflation of gas or liquid, thereby sealing the medium flow cavity inside the valve body and closing the valve;

[0196] When the external device is not inflated with air or liquid, the expansion tube valve seat (1500) maintains its original state under the action of its own elastic force, and forms a cavity channel for the medium to flow inside the valve body, so that the medium can flow in the valve cavity, which is equivalent to opening the valve;

[0197] Alternatively, when the expansion tube valve seat (1500) is inflated with gas or liquid, the amount of gas or liquid filled is adjusted. The expansion tube valve seat (1500) will expand to different sizes as the amount of gas or liquid filled changes. The cross-sectional areas of the expansion tube valve seat (1500) after expansion are different, and the cross-sectional areas of the hollow channels in the closed valve body cavity are different, thereby achieving different flow cross-sectional areas, and then adjusting the valve medium flow, thereby achieving full flow of the medium or flow size adjustment.

[0198] Because the expansion and contraction process of the expansion tube valve seat (1500) during the inflation and deflation of gas or liquid realizes the control process of medium flow, cutting off or regulating; in view of this, the valve in this case can also be named as a piston-type expansion tube sealing valve.

[0199] The above is the principle of the valve's closing, opening and regulating process for the flow of media.

[0200] An expansion pipe sealing valve comprises: a sealing actuator assembly, a valve body assembly, a sealing assembly, and a connecting assembly;

[0201] The sealing actuator assembly includes: valve body connection end cover, connector, plug, piston rod, static piston, dynamic piston, expansion pipe valve seat, valve seat clamp, connection extension pipe, protective sleeve: soft protective sleeve and hard protective sleeve;

[0202] The valve body assembly includes: a main valve body and an extended valve body;

[0203] Its first characteristic is that the movable piston (1260) in the sealing actuator (1000) reciprocates between the holding point and the limit point along the piston rod in the sealing actuator (1000) during the process of filling or releasing gas or liquid from the expansion tube valve seat (1500), that is, during the process of closing and opening the valve.

[0204] The second characteristic is that Figure 6 As shown, after the expansion tube valve seat (1500) is inflated by air or liquid relying on an automatic power source, the outer wall of the expansion tube valve seat (1500) is in close contact with the inner wall of the valve body assembly (2000), forming a first valve seat contact cavity to block the flow of the medium. At the same time, there is a second valve seat non-contact cavity on the upper side of the cavity of the valve body assembly (2000), and there is a third valve seat non-contact cavity on the lower side of the cavity of the valve body assembly (2000).

[0205] After the aforementioned process of gas or liquid circulation, the valve realizes the opening, closing and regulating functions. At the same time, under the control of the automatic control system, the expansion tube valve seat returns to the initial state under the action of its own elastic force during gas or liquid filling and liquid discharge, waiting for the next working cycle.

[0206] In addition, all the valve components, especially the valve body component (2000) and the sealing actuator component (1000), have internal parts in contact with the medium. Depending on different working conditions, the parts in contact with the medium inside the valve body are not treated, or are treated with coating, rubber lining or plastic lining. The coating includes anti-corrosion paint, epoxy resin coating, Teflon, PTFE coating, nylon, ceramic coating; the direct coating layer can meet the needs of special media such as magnetic media, corrosive media, oily media, etc.; it also includes coating, including metal film or other material film with a coating thickness of less than 1mm, or metal coating treatment, such as chrome plating, zinc plating, etc., for treating the medium contact surface. The main feature is that the medium contact surface of the valve body is coated with attachments to avoid wear or corrosion; the medium contact surface can also be treated with anti-corrosion surface treatment, such as bluing, blackening, phosphating, passivation, etc.

[0207] That is, the treatment methods of the parts of all valve components in contact with the medium include:

[0208] The medium contact surface inside the valve is not treated;

[0209] Or make an attachment layer or coating on the medium contact surface inside the valve;

[0210] Or perform anti-corrosion surface treatment on the medium contact surface inside the valve;

[0211] During the application of this case, the following effects can be effectively achieved.

[0212] 1. When the sealing surface of butterfly valves or ball valves passes through small particles or long-fiber wood pulp media, the medium material may get stuck in the sealing surface of the butterfly valve or ball valve, causing valve damage or failure. The expansion tube sealing valve has a long and elastic sealing contact surface, which can wrap wood pulp fibers within 10cm in length or longer long-fiber media or small particles. Compared with butterfly valves and ball valves, it can achieve a larger contact surface seal and better conveying effect than long-fiber media or small particles.

[0213] 2. The contact surface of the expansion tube valve seat (1500) can be elastically deformed. When the medium is particulate matter, the wear tolerance is higher than that of butterfly valves, ball valves and gate valves.

[0214] 3. The expansion tube valve seat (1500) of the expansion tube sealing valve has a sealing surface with a length much longer than that of a butterfly valve or a ball valve. Unlike butterfly valve seals and ball valve seals, the sealing surface will not be penetrated and then fail and be damaged due to the jamming of small hard particles. In this case, even if the valve body assembly (2000) and the expansion tube valve seat (1500) form scratches of a certain length, it will not affect the overall sealing effect. Compared with butterfly valves and ball valves, the sealing effect is better.

[0215] 4. When conveying powder media under negative pressure or conveying gas below 8 bar, butterfly valves or ball valves will fail due to swing wear of the valve seat due to high frequency of use, and ball valves will also fail due to rapid wear of the valve seat. In comparison, the expansion tube valve seat (1500) of the expansion tube sealing valve has a longer service life and better sealing effect.

[0216] 5. Compared with the above three cited invention cases, the valve body assembly has more changes, simple structure, and is easy to process and assemble.

[0217] 6. Compared with the expansion tube assemblies of the above three cited invention cases, the structure of the sealing actuator assembly becomes simple, the connection strength is increased, the overall deformation is small, and the use effect is good.

[0218] 7. In addition, compared with an expansion tube sealing valve with application number 202020507448.3, wrinkles often appear on the expansion tube valve seat; while the expansion tube valve seat (1500) in this case can be displaced between the holding point and the limit point, so the expansion tube valve seat (1500) will not be squeezed by the medium or deformed by itself during the expansion deformation process, and will not be fixed at a certain place of the expansion tube valve seat (1500) to form wrinkles, thereby avoiding local fatigue and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0219] Figure 1 Schematic diagram of the valve structure of Example 1 of the present scheme;

[0220] Figure 2 It is a structural schematic diagram of embodiment 1 of the present scheme, a left view;

[0221] Figure 3 It is a structural schematic diagram of Example 1 of the present scheme, a front view;

[0222] Figure 4 It is a schematic diagram of the structure of Example 1 of the present scheme, a top view;

[0223] Figure 5 For along Figure 4 The top view of the expansion pipe valve seat (1500) in the non-expanded state along the line BB', with the valve in the open position;

[0224] Figure 6 For along Figure 4 The B-B' line in the top view is a comparison diagram of the expansion state of the expansion tube valve seat (1500), and the valve is in the closed position; after the expansion tube valve seat (1500) is inflated with air or liquid by an automatic power source, the outer wall of the expansion tube valve seat (1500) is in close contact with the inner wall of the valve body assembly (2000), forming a first valve seat contact cavity to block the flow of the medium, and at the same time, there is a second valve seat non-contact cavity on the upper side of the cavity of the valve body assembly (2000), and there is a third valve seat non-contact cavity on the lower side of the cavity of the valve body assembly (2000).

[0225] Figure 7 For along Figure 2 The top view of the expansion pipe valve seat (1500) in the non-expanded state along the line A-A', with the valve in the open position;

[0226] Figure 8 For along Figure 2 The top view of the expansion pipe valve seat (1500) is in the expanded state along the line A-A', and the valve is in the open position;

[0227] Fig. 9 A schematic diagram of the valve opening position when the sealing actuator (1000) is not inflated with air or liquid, the holding point position, and the limit point position;

[0228] Fig.10 When the sealing actuator (1000) is inflated with air or liquid, the valve is in a closed position; a schematic diagram of the holding point position and the limit point position;

[0229] Fig. 9 and Fig.10 , it can be seen that there is a displacement distance between the holding point and the limit point;

[0230] Fig.11 is a schematic diagram of a sealing actuator (1000);

[0231] Fig.12 It is a front view of the valve body connection end cover (1200); Fig.13A top view of the valve body connection end cover (1200);

[0232] Fig.14 is a front view of the connecting member (1210); Fig.16 is a top view of the connecting member (1210); Fig.15 is a cross-sectional view of a connecting member (1210);

[0233] Fig.17 It is a front view of the plug (1220); Fig.18 is a top view of the plug (1220); Fig.19 is a cross-sectional view of the plug (1220);

[0234] Fig. 20 is a top view of the expansion pipe valve seat (1500); Fig.21 It is a front view of the expansion pipe valve seat (1500); Fig. 22 is a cross-sectional view of an expansion pipe valve seat (1500);

[0235] Fig.23 is a piston rod: a top view of a piston rod (1230) having a slotted air inlet hole; Fig.24 is a piston rod: a front view of a slot-type air inlet piston rod (1230); Fig.25 is a piston rod: a cross-sectional view of a piston rod (1230) having a grooved air inlet hole;

[0236] Fig.26 Piston rod: a top view of a piston rod (1240) with a hole-type air inlet hole; Fig. 27 The piston rod is a front view of a piston rod (1240) having a hole-type air inlet hole; Fig.28 is a piston rod: a cross-sectional view of a piston rod (1240) having a hole-type air inlet hole;

[0237] Fig.29 The schematic diagram of the piston rod: a hole-type air inlet piston rod (1240), an upper connection connecting piece (1210), and a lower connection plug (1220);

[0238] Fig.30 for Fig.29 A schematic cross-sectional view of

[0239] Fig.31 Schematic diagram of a piston rod: a hole-type air inlet piston rod (1240), an upper connecting connector (1210), and a lower connecting connector (1210);

[0240] Fig.32 for Fig.31 A schematic cross-sectional view of

[0241] Fig.33 is a front view of the static piston (1250); Fig.34 is a top view of the static piston (1250);

[0242] Fig.35 is a front view of the moving piston (1260); Fig.36 is a top view of the moving piston (1260);

[0243] Fig.37 is a front view of the valve seat clamp (1270); Fig.38 is a top view of the valve seat clamp (1270); Fig.39 It is a left side view of the valve seat clamp (1270); Fig.40 is a cross-sectional view of a valve seat clamp (1270);

[0244] Fig.41 is a top view of the hard protective cover (1290); Fig.42 is a front view of the hard protective cover (1290); Fig.43 It is a cross-sectional view of the hard protective sleeve (1290); except for the connection port, the hard protective sleeve has a cavity inside that does not leak. After the movable piston (1260) is connected, the cavity is in a closed state;

[0245] Fig.44 is a top view of the soft protective cover (1280); Fig.45 is a front view of the soft protective cover (1280);

[0246] Fig.46 It is a view of the assembly (1130) without the expansion tube valve seat (1500) and the valve seat clamp (1270), showing the positions of the various components, mainly showing the connection position of the soft protective sleeve (1280);

[0247] Fig.47 The figure is a view of the assembly (1120) without the expansion tube valve seat (1500) and the valve seat clamp (1270), showing the positions of the various components, mainly showing the connection position of the hard protective sleeve (1290);

[0248] Figures 48 to 58 ; Description as below:

[0249] First, according to Fig.48 , a connecting piece (1210) is connected to the upper part of the hole-type air inlet piston rod (1240); the connecting piece (1210) and the static piston (1250) are connected, and then the expansion pipe valve seat (1500) is inserted into the static piston (1250);

[0250] Secondly, according to Fig.49 , continue to install two valve seat clamps (1270);

[0251] Again according to Fig.50, install the movable piston (1260) to connect the expansion pipe valve seat (1500), and then install the plug (1220) at the lower end of the hole-shaped air inlet piston rod (1240);

[0252] Finally, according to Fig.51 , install two valve seat clamps (1270), respectively connect the static piston (1250) and the dynamic piston (1260), to form Fig.52 The component (1110) Fig.53 A cross-sectional view thereof;

[0253] In addition to the above, optional extension tube (1250) Fig.58 As shown in , the component (1140) is constituted;

[0254] If the piston rod (1240) replaces the plug (1220) with a connector (1210) and connects the plug (1220) at the lower end, Fig.54 Component (1110), Fig.55 A cross-sectional view thereof;

[0255] Fig.56 It is a cross-sectional view of the assembly (1120), that is, the assembly (1110) is removed from the plug (1220) and connected to the hard protective cover (1290);

[0256] Fig.57 is a cross-sectional view of the assembly (1130), i.e., the assembly (1110), connected to the soft protective cover (1280);

[0257] The different components (1100), (1110), (1120), (1130), (1140) are connected to the end cover (1200) by bolts or threads, and there are gaskets to seal between them, so as to form a complete sealing actuator assembly (1000);

[0258] The sealing execution component (1000) can be connected to any one of the components (1100), (1110), (1120), (1130), (1140).

[0259] Figure 59 to Figure 85 The valve body assembly (2000) includes: a main valve body and an extension valve body.

[0260] Main valve body example range is Figure 68 to Figure 85 ;Extended valve body example range is Figure 59 to Figure 85 ; The main valve body and the extension valve body are partially overlapped;

[0261] Fig.59 It is a main view of a pass, commonly known as a blind plate (2010); Fig.60 It is a top view of a blind plate, commonly known as a blind plate.

[0262] Fig.61 It is a through deformation structure, which is equivalent to a blocked pipeline, the main view of the blind hole pipe (2020); Fig.62 A top view of it; Fig.63 Its cross-sectional view.

[0263] Fig.64 It is a front view of a two-way, straight pipe (2030); Fig.65 A top view of it.

[0264] Fig.66 It is a front view of a two-way elbow (2040); Fig.67 A top view of it.

[0265] Fig.68 It is a front view of a tee, a straight pipe tee (2050); Fig.69 A top view of it.

[0266] Fig.70 It is a front view of a tee, an oblique or elbow tee (2060); Fig.71 A top view of it.

[0267] Fig.72 It is a front view of a cross, a straight pipe cross (2070); Fig.73 A top view of it.

[0268] Fig.74 It is a front view of a cross, an oblique or curved pipe cross (2080); Fig.75 A top view of it.

[0269] Fig.76 It is a deformed structure of a four-way pipe; a front view of a straight pipe and an oblique or curved pipe four-way pipe (2090); Fig.77 A top view of it.

[0270] Fig.78 It is a front view of a cross-joint, ectopic straight pipe cross-joint (2100); Fig.79 A top view of it.

[0271] Fig.80 It is a front view of a five-way straight five-way (2110); Fig.81 A top view of it.

[0272] Fig.82 It is a front view of a six-way straight pipe six-way (2120); Fig.83 A top view of it.

[0273] Fig.84 It is a front view of a six-way, oblique or curved six-way (2130); Fig.85 A top view of it.

[0274] Figures 86 to 95 , not including Fig.90,as well as Fig.110 ; 8 common modes of three-way expansion pipe sealing valve embodiments. Its characteristics are that the valve body assembly (2000) adopts the first mode, that is, the main valve body is independently composed; it only contains: a sealing actuator assembly (1000) and a main valve body; some are equipped with a mechanical limit switch (6100) and an inductive limit switch (6200), and an inductive part (6300).

[0275] Fig.86 This is a schematic diagram of Example 1, in which the sealing actuator (1000) is combined with the main valve body of the straight pipe tee (2050).

[0276] Fig.87 This is a schematic diagram of Example 2, in which the sealing actuator (1000) is combined with the main valve body of the inclined or curved tee (2060).

[0277] Fig.88 This is a schematic diagram of Example 3, in which the sealing actuator (1000) is combined with the straight pipe tee (2050) main valve body, and the valve body has a mechanical limit switch installed. The principle is described in the three cited patents.

[0278] Fig.89 This is a schematic diagram of Example 4, in which the sealing actuator (1000) is combined with the main valve body of the straight pipe tee (2050), and the valve body is installed with an inductive limit switch. The principle is to install the inductive part (6300) on the moving piston (1260). When the moving piston (1260) moves, it reaches the inductive limit switch (6200) set on the valve body and sends an open or closed feedback signal.

[0279] Fig.91 This is a schematic diagram of Example 5, which comprises a sealing actuator assembly (1000) including a connecting extension tube (1250) and a main valve body of an inclined or curved tee (2060).

[0280] Fig.92 This is a schematic diagram of Example 6, which is composed of a sealing actuator assembly (1000) containing a hard protective sleeve (1290) and a straight pipe tee (2050) main valve body, and the valve is in an open state; Fig.93 This is the valve closed state of Example 6.

[0281] Fig.94 This is a schematic diagram of Example 7, which is composed of a sealing actuator assembly (1000) containing a soft protective sleeve (1280) and a main valve body of an inclined or curved tee (2060), and the valve is in an open state; Fig.95 This is the valve closed state of Example 6.

[0282] Fig.110This is a schematic diagram of Example 29, which is composed of a sealing actuator assembly (1000) including a connecting extension tube (1250) and a main valve body of a straight pipe tee (2050).

[0283] Figures 129 to 134 ; 6 common modes of four-way expansion tube sealing valve embodiments; characterized in that the valve body assembly (2000) adopts the first mode, that is, the main valve body is independently composed;

[0284] Contains only: seal actuator (1000) and main valve body; some with mechanical limit switch (6100) and inductive limit switch (6200), as well as inductive parts (6300)

[0285] Fig.129 This is a schematic diagram of Example 8, in which the sealing actuator (1000) is combined with the straight pipe four-way (2070) main valve body.

[0286] Fig.130 This is a schematic diagram of Example 9, in which the sealing actuator (1000) is combined with the straight pipe cross (2070) main valve body. The valve body is equipped with a mechanical limit switch, and the principle is described in the three cited patents.

[0287] Fig.131 This is a schematic diagram of Example 10, in which the sealing actuator (1000) is combined with the straight pipe four-way (2070) main valve body. The valve body has an inductive limit switch installed. The principle is to install the inductive part (6300) on the moving piston (1260). When the moving piston (1260) moves, it reaches the inductive limit switch (6200) set on the valve body and sends an open or closed feedback signal.

[0288] Fig.132 This is a schematic diagram of Example 11, which comprises a sealing actuator assembly (1000) including a connecting extension tube (1250) and a straight tube four-way (2070) main valve body.

[0289] Fig.133 This is a schematic diagram of Example 12, in which a sealing actuator assembly (1000) containing a soft protective sleeve (1280) is combined with a straight pipe four-way (2070) main valve body.

[0290] Fig.134 This is a schematic diagram of Example 13, which is composed of a sealing actuator assembly (1000) containing a hard protective cover (1290) and a straight pipe four-way (2070) main valve body.

[0291] Partially different sealing actuator components (1000) of the three-way valve body and the four-way valve body are interchangeable;

[0292] There are mechanical limit switches (6100) and inductive limit switches (6200), as well as inductive parts (6300), which can be installed on any embodiment.

[0293] Similarly, there may be a main valve body with 5, 6, 7 or even N channels, where N is an integer greater than or equal to 3.

[0294] There are various combinations of the sealing actuator assembly (1000), and there are various main valve bodies;

[0295] The two are combined together to form an embodiment, the number of which is Q, where Q is an integer greater than or equal to 1.

[0296] Fig.90 as well as Figures 96 to 109 , which are 15 common modes of three-way or multi-way expansion pipe sealing valve embodiments.

[0297] The valve body assembly (2000) is characterized in that the valve body assembly (2000) is composed of a main valve body and an extension valve body in the second mode, and is connected with a sealing actuator assembly (1000) to form an embodiment of an expansion tube sealing valve.

[0298] It contains: a sealing actuator assembly (1000) and a valve body assembly (2000). The valve body assembly (2000) adopts the second method and is composed of a main valve body and an extended valve body; part of the valve body assembly is provided with a mechanical limit switch (6100) and an inductive limit switch (6200), as well as an inductive part (6300).

[0299] Fig.90 This is a schematic diagram of Example 14, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000);

[0300] The valve body assembly (2000) is composed of a main valve body with an inclined or curved tee (2060) and an extended valve body straight pipe (2030).

[0301] Fig.96 This is a schematic diagram of Example 15, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0302] The valve body assembly (2000) is composed of:

[0303] A straight pipe tee (2050) main valve body; an extended valve body: a straight pipe (2030) and a curved pipe (2040); are combined together to form a main valve body.

[0304] Fig.97 This is a schematic diagram of Example 16, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0305] The valve body assembly (2000) is composed of:

[0306] A main valve body of a straight pipe three-way (2050); an extended valve body: a straight pipe (2030), a straight pipe four-way (2070); and they are combined together to form a main valve body.

[0307] Fig.98 This is a schematic diagram of Example 17, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0308] The valve body assembly (2000) is composed of:

[0309] A straight pipe three-way (2050) main valve body; an extended valve body: a straight pipe (2030), a straight pipe five-way (2110); combined together to form a structure.

[0310] Fig.99 This is a schematic diagram of Example 18, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0311] The valve body assembly (2000) is composed of:

[0312] A main valve body of a straight pipe tee (2050); an extended valve body: a straight pipe (2030), an oblique or curved pipe tee (2060); are combined together to form a main valve body.

[0313] Fig.100 This is a schematic diagram of Example 19, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0314] The valve body assembly (2000) is composed of:

[0315] A main valve body of a straight pipe tee (2050); an extended valve body: a straight pipe (2030), an oblique or curved pipe four-way (2080); are combined together to form a structure.

[0316] Fig.101 This is a schematic diagram of Example 20, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0317] The valve body assembly (2000) is composed of:

[0318] A main valve body of a straight pipe tee (2050); an extended valve body: two straight pipe tees (2050); are combined together to form a main valve body.

[0319] Fig.102 This is a schematic diagram of Example 21, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0320] The valve body assembly (2000) is composed of:

[0321] A main valve body of a straight pipe tee (2050); an extended valve body: two straight pipe tees (2050) and a curved pipe (2040); they are combined together to form a main valve body.

[0322] Fig.103 This is a schematic diagram of Example 22, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0323] The valve body assembly (2000) is composed of:

[0324] A main valve body of a straight pipe tee (2050); an extended valve body: two oblique or curved pipe tees (2060), and a curved pipe (2040); are combined together to form a main valve body.

[0325] Fig.104 This is a schematic diagram of Example 23, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0326] The valve body assembly (2000) is composed of:

[0327] A main valve body with an oblique or curved pipe tee (2060); an extended valve body: two oblique or curved pipe tees (2060), and an curved pipe (2040); are combined together to form a main valve body.

[0328] Fig.105 This is a schematic diagram of Example 24, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0329] The valve body assembly (2000) is composed of:

[0330] A main valve body of an inclined or curved pipe tee (2060); an extended valve body: two straight pipes (2030) and a curved pipe (2040); are combined together to form a structure.

[0331] Fig.106 This is a schematic diagram of Example 25, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0332] The valve body assembly (2000) is composed of:

[0333] A straight pipe tee (2050) main valve body; an extended valve body: two straight pipes (2030) and a curved pipe (2040); they are combined together to form a main valve body.

[0334] Fig.107 This is a schematic diagram of Example 26, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0335] The valve body assembly (2000) is composed of:

[0336] A straight pipe tee (2050) main valve body; extended valve body: is a special form, double inclined pipe or combined with a single elbow four-way composition; combined together to form.

[0337] Fig.108 This is a schematic diagram of Example 27, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0338] The valve body assembly (2000) is composed of:

[0339] On the basis of Example 26, an extended valve body straight pipe five-way (2110) is added to form a combination.

[0340] Fig.109 This is a schematic diagram of Example 28, in which a sealing actuator assembly (1000) is combined with a valve body assembly (2000).

[0341] The valve body assembly (2000) is composed of:

[0342] A main valve body of an inclined or curved pipe tee (2060); an extended valve body: a straight pipe (2030), a curved pipe (2040); are combined together to form a structure.

[0343] The valve body assembly (2000) is composed of a main valve body and an extended valve body when the second method is adopted.

[0344] The main valve bodies of Examples 14 to 28 are 3-way valve bodies, which can be replaced with 4-way, 5-way, 6-way, 7-way or even N-way main valve bodies according to different needs, where N is an integer greater than or equal to 3.

[0345] The extended valve body may be one or a combination of multiple ones; the number is not limited and is an integer greater than or equal to 0;

[0346] When the valve body assembly (2000) adopts the second method, any extended valve body thereof:

[0347] According to the design, it can be: zero-through blind plate, 1-through pipe, i.e. blind plate deformation structure, 2-through, 3-through, 4-through, 5-through, 6-through, ... up to K-through form with K through diameters, the number of through diameters K is an integer greater than or equal to 0.

[0348] The sealing actuator (1000) has multiple combinations.

[0349] There are mechanical limit switches (6100) and inductive limit switches (6200), as well as inductive parts (6300), which can be installed on any embodiment.

[0350] The above-mentioned sealing actuator assembly (1000) and valve body assembly (2000) are combined together to form an embodiment, the number of which is E, where E is an integer greater than or equal to 1.

[0351] Figures 111 to 124 The main application process range is slag discharge or material discharge. It is mainly used at the bottom of the tank. It is also called tank bottom valve or discharge valve. It is a valve specially designed for similar working conditions.

[0352] Tilt discharge valve Figures 111 to 113 As shown, the three-way valve body is deformed, the feed inlet is the inlet just above the figure, and the discharge port is diagonally below.

[0353] Fig.111 , is a schematic diagram of Example 29, in which the sealing actuator (1000) and the valve body assembly (2050) are combined together to form a discharge valve; generally, the feed port is the inlet directly above the figure, and the discharge port is diagonally below, and the sealing actuator (1000) is installed at an angle; the characteristic is that when the expansion tube valve seat (1500) of the sealing actuator (1000) expands, the feed port and the discharge port of the three-way valve body (2050) are closed at the same time, and the expansion tube valve seat (1500) is in contact with both the feed port and the discharge port.

[0354] Fig.112 , which is a schematic diagram of Example 30, is based on Example 29 and is equipped with a soft protective sleeve (1280), which is characterized in preventing the medium from adhering to the piston rod.

[0355] Fig.113 , is a schematic diagram of Example 31, which is based on Example 29 and is equipped with a connecting extension pipe (1250), and the sealing actuator (1000) is installed at an angle; the characteristic is that when the expansion pipe valve seat (1500) of the sealing actuator (1000) expands, only the discharge port of the three-way valve body (2050) is closed, and the expansion pipe valve seat (1500) is only in contact with the discharge port.

[0356] Eccentric discharge valve Figures 114 to 116 As shown, the three-way valve body is deformed, the feed port is the inlet just above the figure, and the discharge port is just below the figure. The center lines of the pipes of the feed port and the discharge port are offset. It can be seen in the figure that the center lines of the feed port and the discharge port do not overlap.

[0357] Fig.114 , is a schematic diagram of embodiment 32, which is based on embodiment 29, the three-way valve body is deformed (2200), the feed port is the inlet directly above the drawing, the discharge port is below, and the pipe centers of the feed port and the discharge port are offset. It is mainly adapted to the situation where there is insufficient space above, and the sealing actuator (1000) can be disassembled and repaired laterally.

[0358] Fig.115, which is a schematic diagram of Example 33, the three-way valve body is deformed (2220), the inlet directly above the figure is the feed port, and the lower section is inclined; the sealing actuator (1000) is perpendicular to the lower outlet, and the pipe centers of the feed port and the outlet are offset. It is mainly suitable for the yield installation in the case of insufficient space above, and the sealing actuator (1000) can be disassembled and repaired online.

[0359] Fig.116 , is a schematic diagram of Example 34, the three-way valve body is deformed (2230), the inlet directly above the figure is the feed port, the lower section is inclined, the sealing actuator (1000) is perpendicular to the lower discharge port, and the pipe centers of the feed port and the discharge port are offset. It is mainly suitable for double-giving installation when there is insufficient space above the feed pipe and the sealing actuator (1000). The sealing actuator (1000) can be disassembled and repaired online. Double-tube discharge valve 1 Figure 117 to Figure 118 As shown, the four-way valve body is tilted and deformed, the feed inlet is the inlet just above the figure, and there are two discharge ports just below and obliquely below the figure, which is particularly suitable for water mixture media of residues such as wood blocks and nails, such as papermaking slag removers and other process applications.

[0360] Fig.117 , is a schematic diagram of Example 35, the four-way valve body is deformed (2240), the feed inlet in the figure is the inlet directly above, and there are two discharge ports directly below and obliquely below the figure; the sealing actuator (1000) is inclined at the lower discharge port, and there are two discharge ports. The straight pipe can directly discharge the medium residue to avoid some viscous material media from sticking to the oblique discharge port. The oblique discharge port plays an auxiliary role and is also beneficial to the expansion tube valve seat (1500) of the sealing actuator (1000) not sticking to the medium when expanding.

[0361] Fig.118 , which is a schematic diagram of Example 36, the four-way valve body is deformed (2240), the feed port in the figure is the inlet directly above, and there are two discharge ports directly below and obliquely below the figure; the sealing actuator (1000) contains a soft protective sleeve (1280), which is inclined at the lower discharge port. There are two discharge ports, and the straight pipe can directly discharge the medium residue to avoid some viscous material media or granular material media from sticking to the oblique discharge port. The oblique discharge port plays an auxiliary role and is also beneficial to the expansion tube valve seat (1500) of the sealing actuator (1000) from sticking to the medium when it expands. A hard protective sleeve (1290) or a soft protective sleeve (1280) can also be used to protect the piston rod and other medium contact parts from sticking to the medium. The main application is particulate media. The soft protective sleeve is used in this embodiment. The combined valve body discharge valve with the feed port and the discharge port coinciding in the center is as follows Figures 119 to 124 As shown, in order, they are Example 37 to Example 42, which are assembled by adding an extended valve body on the basis of Example 32 to 36.

[0362] Figures 119 to 122The sealing actuator assembly (1000) can adopt different forms of piston rod assemblies, the main valve body is a deformed tee, the extended valve body (2210), and the valve body assembly (2000) adopts the second method, which is composed of a main valve body and an extended valve body. The valve body assembly (2000) is characterized in that the center lines of the feed inlet and the discharge port coincide with each other, and is a combined valve body discharge valve with the center lines of the feed inlet and the discharge port coincident.

[0363] Figure 123 to Figure 124 The sealing actuator assembly (1000) can adopt different forms of piston rod assemblies, the main valve body is a deformed four-way valve (2250), the extended valve body (2260), and the valve body assembly (2000) adopts the second method, which is composed of a main valve body and an extended valve body. The valve body assembly (2000) is characterized in that the center lines of the feed inlet and the discharge port coincide with each other, and is a combined valve body discharge valve combined valve island with the center lines of the feed inlet and the discharge port coincident. Figures 125 to 128 As shown;

[0364] Fig.125 Valve island embodiment 43 (10000) is composed of 2 Fig.87 Embodiment 1 is combined with a straight pipe tee (2050) of the extended valve body to form a valve island with two inlets and one outlet. It is generally used for the rear end of the screw sludge pump in the sewage treatment plant. The two feed holes of Embodiment 1 are connected to different screw sludge pump outlets respectively, and the two sides of the extended valve body are connected to Embodiment 1 to form a two-inlet and one-outlet combined valve island. When the inlet and outlet of the medium are interchanged, the flow direction changes, which is a one-inlet and two-outlet combined valve island.

[0365] Fig.126 Valve island embodiment 44 (100010) is composed of 2 Fig.87 Example 1, plus a Fig.112 Embodiment 29, adding two sections of extended valve body straight pipe two-way (2030); adding a section of extended valve body with a telescopic joint at the lower end, and combining them together to form;

[0366] The four-way extension valve body of the telescopic joint is easy to install, and the three separately controlled embodiments can realize the conveying of media in different directions.

[0367] Fig.127 Valve island embodiment 45 (100020), consisting of 4 Fig.130 The embodiment 8 is composed of the left medium inlet, the lower 4 medium outlets and the right medium outlet as shown in the figure. The characteristic is that the medium is controlled sequentially, and different embodiments 8 are named as control valves 1, 2, 3 and 4 from left to right. When No. 1 is closed, all subsequent outlets are closed; when No. 1 is opened, No. 2 can be opened; when No. 1 and No. 2 are opened, No. 3 can be opened; when No. 1, No. 2 and No. 3 are opened, No. 4 can be opened; the opening sequence is controlled, which is a valve island application with locking sequence.

[0368] Fig.128 Valve island embodiment 46 (100030), consisting of 4 Fig.133 The embodiment 11 is composed of the embodiment 11, and is set as the left medium inlet, 4 medium outlets on the lower side, and one medium outlet on the right side as shown in the figure. It is characterized in that the medium flow is controlled separately, and different embodiments 11 are named as control valves 1, 2, 3, and 4 from left to right. When No. 1 is opened and closed, all subsequent outlet controls are not affected; when No. 2 is opened and closed, all front and rear outlet controls are not affected; when No. 3 is opened and closed, all front and rear outlet controls are not affected; when No. 4 is opened and closed, all front and rear outlet controls are not affected;

[0369] The medium in and out of the valve island is controlled separately under the control of each independent embodiment 11, which is a valve island application that can freely select output control. The embodiment of the valve island can have S embodiments according to actual conditions such as demand and design, where S is an integer greater than or equal to 1. DETAILED DESCRIPTION

[0370] The technical solution of this solution is further described in detail below in conjunction with specific implementation methods.

[0371] In all embodiments of the expansion pipe sealing valve of this case, the following components are included:

[0372] The invention comprises: a sealing actuator component (1000), a valve body component (2000), a sealing component (3000) and a connecting component (4000).

[0373] As well as optional mounting parts, mechanical limit switches (6100) and inductive limit switches (6200), as well as inductive parts (6300) and so on.

[0374] First, in all embodiments, all valve components, the treatment methods of the internal parts in contact with the medium include:

[0375] The medium contact surface inside the valve is not treated;

[0376] Or make an attachment layer or coating on the medium contact surface inside the valve;

[0377] Or perform anti-corrosion surface treatment on the medium contact surface inside the valve.

[0378] Second, all embodiments may optionally be installed with or without a mechanical limit switch (6100); or an inductive limit switch (6200), and an inductive part (6300).

[0379] Third, the sealed actuator assembly (1000), attached to this case Fig.11 ,include:

[0380] The valve body is connected to an end cover (1200), a connecting piece (1210), and a plug (1220);

[0381] Piston rod: either the slot-type air inlet piston rod (1230) or the hole-type air inlet piston rod (1240) can be installed; the two can be interchanged without affecting the actual working state of the valve.

[0382] Static piston (1250), dynamic piston (1260), expansion pipe valve seat (1500), valve seat clamp (1270);

[0383] Connecting extension tube (1250) Fig.58 As shown in, as an option, installed or not installed;

[0384] Protective sleeve: Soft protective sleeve (1280) and hard protective sleeve (1290) are optional. Depending on the working conditions and media, you can choose to install one or not. Generally, they are connected to the piston rod assembly through threads or flanges.

[0385] by Fig.11 An example is provided, which is a connection form of a sealing actuator (1000);

[0386] In addition, the piston rod assembly refers to the state of the sealing actuator (1000) that is not connected to the valve body connection end cover (1200), which is called the piston rod assembly; it is an intermediate state assembly in the assembly process of the sealing actuator (1000), and because it has different forms, it is described as follows.

[0387] First, according to Fig.48 ,

[0388] The first step is to connect a connector (1210) to the upper part of the hole-type air inlet piston rod (1240), generally by thread, flange or welding.

[0389] The second step is to connect the static piston (1250) and the connecting piece (1210), generally by means of threads or flanges.

[0390] In the third step, the expansion pipe valve seat (1500) is then inserted into the static piston (1250); the expansion pipe valve seat (1500) is elastic and elastically connected, and the valve seat is inserted into the static piston through its own elasticity.

[0391] The fourth step is based on Fig.49 , continue to install the two valve seat clamps (1270) and insert them into the position shown in the figure.

[0392] Step 5: According to Fig.50 The movable piston (1260) is installed to connect the expansion pipe valve seat (1500), and the connection is elastic. The valve seat is sleeved on the movable piston (1260) through its own elasticity.

[0393] The sixth step is to install the plug (1220) at the lower end of the hole-type air inlet piston rod (1240), preferably by threading, but optionally by welding.

[0394] Step 7: According to Fig.51 , install two valve seat clamps (1270), preferably threaded connection; respectively connect the static piston (1250) and the dynamic piston (1260) to form Fig.54 The piston rod assembly (1110) shown, Fig.55 Its cross-sectional view.

[0395] On the basis of the above, optionally, an extension tube (1250) is connected to the connecting piece (1210). Fig.58 As shown in , a piston rod assembly (1140) is formed; it is generally threaded or flanged, and can also be welded.

[0396] If the piston rod (1240) replaces the plug (1220) with a connector (1210) and connects the plug (1220) at the lower end, then Fig.52 Piston rod assembly (1100), Fig.53 A cross-sectional view thereof;

[0397] Fig.56 It is a cross-sectional view of the piston rod assembly (1120), that is, the piston rod assembly (1110) is removed from the plug (1220) and connected to the hard protective sleeve (1290);

[0398] Fig.57 is a cross-sectional view of the piston rod assembly (1130), i.e., the piston rod assembly (1110), connected to the soft protective sleeve (1280);

[0399] Different piston rod assemblies, part numbers (1100), (1110), (1120), (1130), (1140), are connected to the valve body connection end cover (1200) through bolts of the connection assembly (4000), and a sealing assembly (3000) is provided between the two to form a complete sealing actuator assembly (1000);

[0400] The sealing actuator assembly (1000) can be connected to any one of the piston rod assemblies (1100), (1110), (1120), (1130), (1140).

[0401] There are five common combinations of the sealing actuator assembly (1000), which are matched with the above-mentioned different piston rod assemblies.

[0402] Regarding the third, the above is the preferred installation method; as shown in the figure, the static piston (1250) is on the top and the dynamic piston (1260) is on the bottom, the valve body is connected to the end cover (1200) connected to the static piston (1250), and the dynamic piston (1260) is displaced downward.

[0403] Piston rod used: slot-type air inlet piston rod (1230), hole-type air inlet piston rod (1240), either one can be installed; the two can be interchanged without affecting the actual valve working state. The air inlet hole or slot is on one side of the static piston (1250), the upper side in the figure.

[0404] In fact, the installation can be reversed, that is, the moving piston (1250) is on the top and the static piston (1260) is on the bottom, the connecting piece (1210) or the plug (1220) is connected to the static piston (1250), and the moving piston (1260) moves upward.

[0405] The piston rod used is installed in reverse: either the slot-type air inlet piston rod (1230) or the hole-type air inlet piston rod (1240) can be installed; the two can be interchanged without affecting the actual valve working state. That is, the air inlet or slot is on one side of the static piston (1250), the lower side in the figure.

[0406] Fourth, the valve body assembly includes: a main valve body and an extended valve body.

[0407] The valve body assembly (2000) includes two combinations:

[0408] In the first method, the main valve body is independently composed;

[0409] The main valve body can be a three-way valve body or a four-way valve body, as shown in the embodiment;

[0410] Similarly, there may be a main valve body with 5, 6, 7 or even N channels, where N is an integer greater than or equal to 3.

[0411] Main valve bodies with different numbers of passages can be matched with sealing actuators (1000) at will. That is, different piston rod assemblies, such as the above-mentioned five types of piston rod assemblies (1100), (1110), (1120), (1130), (1140); the sealing actuators (1000) respectively constructed can be used interchangeably according to the design;

[0412] The sealing actuator assembly (1000) and the valve body assembly (2000) are connected by threads, flanges or welding; if the valve body assembly (2000) is connected by bolts of the connecting assembly (4000), there is a sealing assembly (3000) between the two, forming a complete embodiment, namely, an expansion tube sealing valve.

[0413] In the embodiment of the present case, the valve body assembly (2000) adopts the first mode, in which the main valve body is independently composed;

[0414] There are five common combinations of the sealing actuator (1000).

[0415] There are G possibilities for the main valve body, where G is an integer greater than or equal to 1; that is, different N-way main valve bodies, where N is an integer greater than or equal to 3.

[0416] The above-mentioned sealing actuator and main valve body are combined together to form different embodiments, the number of which is M, where M is an integer greater than or equal to 1.

[0417] The second method is composed of a main valve body and an extended valve body combination;

[0418] The main valve body is described in the same way as in the first method;

[0419] The extended valve body may be one or a combination of multiple ones; the number is not limited and is an integer greater than or equal to 0;

[0420] When the valve body assembly (2000) adopts the second method, any extended valve body thereof:

[0421] According to the design, it can be: zero-through blind plate, 1-through pipe, i.e. blind plate deformation structure, 2-through, 3-through, 4-through, 5-through, 6-through, ... up to K-through form with K through diameters, the number of through diameters K is an integer greater than or equal to 0.

[0422] An extended valve body is composed of K N ports, and is described as an extended valve body containing K N ports; that is, 1N, 2N, ..., up to KN;

[0423] K is an integer greater than or equal to 0, that is:

[0424] When K = 0, there is no extended valve body;

[0425] When K = 1, there is 1 extended valve body;

[0426] When K=2, there are 2 extended valve bodies;

[0427] …

[0428] There are K extended valve bodies up to K, where K is an integer greater than or equal to 0.

[0429] The N-through holes of the extended valve body have a through hole number of T, where T is an integer greater than or equal to 0.

[0430] When T = 0, there is no path, which is equivalent to a blind plate; that is, N is a blind plate;

[0431] When T=1, there is a through diameter, and the other end is closed, which is equivalent to a section of a one-side closed tube; that is, N-pass is a section of a one-side closed tube;

[0432] When T=2, a section of pipe connected on both sides includes elbows, reducers, straight pipes, V-tubes, etc.; that is, N-way is a section of two-way pipe;

[0433] When T=3, a section of pipe with three through holes includes elbow tees, reducer tees, straight tees, oblique tees, etc.; that is, N through holes is a section of tee pipe;

[0434] When T=4, a section of pipe with four through holes includes elbow cross, reducer cross, straight cross, oblique cross, etc.; that is, N through holes is a section of cross pipe;

[0435] T changes continuously according to the above rule; from 0, 1, 2, 3, 4, ..., to T; T is an integer greater than or equal to 0.

[0436] That is, the extended valve body N-way is a T-way valve body with T through holes, and the N-way described above is an extended valve body.

[0437] Each of the above KN passes is independent of each other because of the different K values;

[0438] At the same time, the T value of each KN pass is determined according to the design, and the T value is an arbitrary integer greater than or equal to 0;

[0439] Therefore, N-pass valves with different K values ​​are independent of each other, and their T-pass valve bodies can have the same or different number of holes T as other N-pass valves.

[0440] For example, the extended valve body 1N may be a two-way pipe; the extended valve body 2N may also be a two-way pipe, or 2N may be a three-way pipe or a four-way pipe, and each of the N-way pipes is independent.

[0441] In the present embodiment, the valve body assembly (2000) adopts the second mode, which is composed of a main valve body and an extended valve body;

[0442] There are five common combinations of the sealing actuator (1000).

[0443] There are G possibilities for the main valve body, where G is an integer greater than or equal to 1; that is, different N-way main valve bodies, where N is an integer greater than or equal to 3.

[0444] The extended valve body may be one or a combination of multiple ones; there is no limit to the number, which is an integer greater than or equal to 0.

[0445] The sealing actuator, the main valve body and the extension valve body are combined together to form different embodiments, the number of which is P, where P is an integer greater than or equal to 1.

[0446] Fourth, the sealing of the connection positions of the various parts of the valve body of the complete embodiment, and the connection method;

[0447] Sealing is achieved through a sealing assembly (3000); including various common gaskets, such as rubber gaskets, PTFE gaskets, O-rings, metal sealing gaskets, etc.

[0448] The connection of each component, in addition to welding or reserved threaded connection, is achieved through a connection component (4000), including various types of screws, bolts, nuts, etc.

[0449] The connection between the main valve body and the extension valve body is sealed by a sealing assembly (3000). The connection methods include threaded connection, welding connection and reserved flange connection through a connection assembly (4000), including various types of screws, bolts, nuts, etc.

[0450] The connection between the extension valve bodies is sealed by a sealing assembly (3000), and the connection methods include threaded connection, welding connection and reserved flange connection through a connection assembly (4000), including various types of screws, bolts, nuts, etc.

[0451] The connection between the sealing actuator component (1000) and the valve body component (2000) is sealed by the sealing component (3000). The connection methods include threaded connection, welding connection and reserved flange connection through the connection component (4000), including various types of screws, bolts, nuts, etc.

[0452] In all the above embodiments, the setting value of inflation or liquid filling (the reference value is the standard atmospheric pressure at sea level is 0, and the actual pressure is about 1 bar. According to various standards, it is uniformly defined here that the standard atmospheric pressure is 0 bar, that is, the actual pressure gauge reference value is 0; the actual operating valve pressure refers to the actual gauge pressure, that is, the gauge pressure 0 bar = the actual sea level pressure 1 bar; the actual gauge pressure is 0.1 MPa, 0.1 MPa = 1 bar, the pressure value is the gauge pressure, and the actual reference sea level is 2 bar), according to the actual medium pressure design selection, the valve is opened and closed, and the setting value is greater than the medium pressure to ensure that the expansion tube can expand to a sufficient size and close the medium channel; after the pressure is released, the normal pressure is restored, that is, the standard atmospheric pressure of the reference value is about 0.1 MPa, and at this time, the valve is opened by relying on its own elastic reset;

[0453] When inflated, the air pressure is between 0Mpa and 2.0Mpa; or other expressions, between 0bar and 20bar;

[0454] During filling, due to the incompressibility of liquid, an external control device controls the entry and discharge of liquid. After cutting off, the holding pressure is controlled and the filling holding pressure is set to less than 10Mpa or 100bar.

[0455] The above pressure values ​​are preferred values, except for special designs.

[0456] The above are some implementation examples of the present solution, but it should be pointed out that the present solution is a separate valve, which is a part of the entire application system and a participant in the operation of the system, but not the entire system. The present solution is a means to achieve the operation of the system by using it independently or in conjunction with other equipment in the system, and the present solution does not have all the functions of the system. At the same time, the realization of the functions of the present solution itself also requires the cooperation of the system's own control system, power system, transportation system, protection system, etc. to achieve the final realization, so the above-mentioned embodiments exist in the entire system, and are supported by themselves or other system equipment, and operate together to ultimately achieve the system design function. The actual application scope of the present solution is not limited to the simple scope described in the implementation example.

[0457] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting from all perspectives, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0458] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions of each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An expansion pipe sealing valve, comprising: Seal actuator assembly, valve body assembly, sealing assembly, connection assembly; The sealing actuator assembly includes: valve body connection end cover, connector, plug, piston rod, static piston, dynamic piston, expansion pipe valve seat, valve seat clamp, connection extension pipe, protective sleeve: soft protective sleeve and hard protective sleeve; The valve body assembly includes: a main valve body and an extended valve body; Its characteristic is that the moving piston in the sealing actuator assembly reciprocates between the holding point and the limit point along the piston rod in the sealing actuator assembly during the process of filling and releasing gas or liquid from the expansion tube valve seat, that is, during the process of closing and opening the valve.

2. The expansion pipe sealing valve according to claim 1, characterized in that: The valve body assembly includes: a main valve body and an extended valve body; The valve body assembly is composed of the following two methods: In the first method, there is only one main valve body, which independently constitutes the valve body assembly; The second method is to connect the main valve body and the extension valve body together to form a valve body assembly; The features of the valve body assembly, main valve body and extended valve body are as follows: The main valve body in the valve body assembly is M-way, and there is only one M-way main valve body; The main valve body M has through holes inside, the number of through holes is S, and S is an integer greater than or equal to 3; That is, M-pass is an S-pass valve body with S number of through holes; The extended valve body in the valve body assembly is KN-through. It is composed of K N combinations, that is, 1N, 2N, ..., up to KN, where K is an integer greater than or equal to 0; The N-through holes of the extended valve body have a through hole number of T, where T is an integer greater than or equal to 0.

3. The expansion pipe sealing valve according to claim 1, characterized in that Also includes: wherein the piston rod has an opening or a slot; The hole or groove is located outside the travel range of the moving piston.

4. The expansion pipe sealing valve according to claim 1, characterized in that Also includes: The expansion pipe valve seat is made of elastic material; The expansion tube valve seat is in the shape of a circular tube; The expansion pipe valve seat is a single-layer structure; or a multi-layer structure, that is, the number of expansion pipe layers is N, and N is a positive integer greater than or equal to 2; When the expansion pipe valve seat has a multi-layer structure, each layer of the expansion pipe valve seat has a different thickness; When the expansion pipe valve seat has a multi-layer structure, each layer of the expansion pipe valve seat has the same thickness; When the expansion pipe valve seat has a multi-layer structure, the outer layer of the expansion pipe valve seat is made of wear-resistant material; When the expansion tube valve seat has a multi-layer structure, the expansion tube valve seat has an inner layer made of a material having an elastic deformation coefficient greater than that of an outer layer; When the expansion tube valve seat has a multi-layer structure, the expansion tube valve seat has inner and outer layers made of the same material.

5. The expansion pipe sealing valve according to claim 1, characterized in that Also includes: The protective cover includes: soft protective cover and hard protective cover. The soft protective cover is made of soft material and fixed on two circular plates. The two circular plates are respectively connected to the moving piston and the plug and move with the moving piston; stretch to open or shrink; Among them, the hard protective cover: the hard protective cover is connected to the moving piston through threads or bolts and moves accordingly. The hard protective cover is made of hard material.

6. The expansion pipe sealing valve according to claim 1, characterized in that Also includes: Sealed actuator limited positions and holding points: The holding point refers to the position where the lower edge of the moving piston contacts the piston rod when the seal actuator is not inflated with air or liquid, that is, when the expansion pipe valve seat is not expanded, which is defined as the holding point; The limit point refers to the position where the lower edge of the moving piston contacts the connector or plug when the sealing actuator is inflated with air or liquid, that is, after the expansion pipe valve seat expands, which is defined as the limit point; There is a displacement distance between the holding point and the limit point.

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