Eccentric expansion pipe sealing valve

Abstract

The utility model belongs to the field of valves, is mainly applied to conveying media such as gas or liquid or particulate matter, and is particularly suitable for conveying the media such as gas or powder or particulate matter or sludge or conveying the media in a negative pressure state. The control of the valve is realized 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 eccentric 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 derived from the following three inventions, namely, an expansion pipe sealing valve with application number 202020507448.3; an eccentric expansion pipe sealing valve with application number 202220163279.5; an eccentric expansion pipe sealing valve with application number 202220163278.0;

[0004] On this basis, the shortcomings of the original invention are summarized and sorted out, and further creative improvements are made.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] At the same time, compared with other valves, such as butterfly valves, knife gate valves, ball valves and other valves, the invention of this case 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 storing and transporting grain or chemical particles.

[0009] Fourth, it can avoid powder accumulation inside the valve body when conveying powder media.

[0010] Fifth, the seal adopts face seal, 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] Eighth, when used as a tank bottom valve, compared with the cited patent, the invention in this case can achieve full-bore flow. Summary of the invention

[0018] This solution aims at the above-mentioned problem, overcomes at least one disadvantage, and provides an eccentric expansion pipe sealing valve to solve the problem.

[0019] To achieve the above objectives, this solution provides the following technical solutions.

[0020] The invention of this case is an eccentric expansion pipe sealing valve, which includes a sealing actuator component and a valve body component as well as a sealing component and a connecting component.

[0021] The sealing actuator assembly includes: valve body connection end cover, connector, plug, telescopic tube assembly: telescopic tube and limit stopper, moving piston, static piston, expansion tube valve seat, valve seat clamp, and connecting extension tube.

[0022] The sealing actuator assembly executes 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 executes the process of filling or releasing air or liquid in the valve by the air or liquid circuit controlled by the above spare parts.

[0023] Changes in the expansion pipe valve seat in the sealing actuator during the process of filling or releasing gas or liquid;

[0024] 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;

[0025] 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 flow of medium inside the valve body, so that the medium can flow in the valve cavity, which is equivalent to opening the valve;

[0026] 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;

[0027] The above is the process of closing, opening and adjusting the flow of medium by the valve.

[0028] Because the function it realizes is similar to the function of the actuator in other valve controls, it is named as the sealed actuator.

[0029] The expansion tube assembly in the seal actuator assembly is divided into multi-stage expansion tubes, which are nested together one by one, and reciprocate in the process of filling or releasing gas or liquid in the expansion tube valve seat. That is, in the process of opening and closing the valve, the expansion tubes of the expansion tube assembly in the seal actuator assembly cooperate with each other to reciprocate and retract, similar to a multi-stage hydraulic cylinder, but because there is no need to seal between the expansion joints, the processing accuracy does not need to be very high.

[0030] The first characteristic of the invention is that it has a multi-stage expansion tube, and each section of the expansion tube extends or retracts as the expansion tube valve seat is filled with gas or liquid. At the same time, the expansion tube valve seat is relied upon to open or cut off the medium flow section of the internal cavity of the valve body assembly, thereby realizing the control process of medium flow, cutting off or regulating.

[0031] The second characteristic is that the center point of the expansion tube valve seat will be displaced between the initial valve opening position and the valve closing position after inflation or liquid expansion due to the deformation, extension, and retraction recovery process of the expansion tube valve seat; that is, the center point of the expansion tube valve seat itself is displaced, and this displacement is defined as a manifestation of valve eccentricity. In view of this, the valve in this case is named an eccentric expansion tube sealing valve, also known as a multi-stage expansion tube eccentric expansion valve.

[0032] Unless there is a special description or reference in the specification of this case to point out the difference with this case, the "eccentric expansion tube sealing valve" or "multi-stage telescopic tube eccentric expansion valve" in the text refers to the invention of this case.

[0033] Sealed actuator (1000), attached to this caseFig.11 , 12, 13, 14, several forms, including:

[0034] The valve body is connected with an end cover (1200), a connector (1210), and a plug (1220); a telescopic tube assembly: a telescopic tube (1300) and a limit stopper (1220), wherein the telescopic tube has different numbers for different sizes (for example, 1310 or 1320), and the limit stop has different numbers for different sizes (for example, 1220A or 1220B or 1220X); a static piston (1250), a dynamic piston (1260), an expansion tube valve seat (1500), and a valve seat clamp (1270);

[0035] Connecting extension tube (1240) Fig.15 , as shown in 16 and 17, as an optional part, installed or not installed;

[0036] Valve body connection end cover (1200), attached Fig.18 Main view, attached Fig.19 is a top view; the valve body connection end cover (1200) is a circular plate, similar to a blind plate, but with a through hole in the middle; from the top view, the through hole in the middle of the valve body connection end cover is named a connection hole, which is used as a connection channel, and the connector (1210) is connected to or passes through it. Preferably, the hole has a reserved thread; optionally, the hole has no reserved thread.

[0037] 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;

[0038] Preferably, the static piston connecting hole has a reserved threaded hole; optionally, the static piston connecting hole has no reserved threaded hole.

[0039] 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;

[0040] From the top view, optionally, the outermost edge of the valve body connection end cover has a reserved thread for connecting the valve body.

[0041] Connector (1210), attached Fig. 20 Main view, attached Fig. 22 For top view, Fig.21 The middle section view of the main view;

[0042] From the combination of the three views, the component is a three-section machined cylindrical structure, divided into three parts: upper, middle and lower.

[0043] from Figure 1As 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.

[0044] Preferably, it is installed at the upper end of the telescopic tube. Fig.45 As shown, the upper cylinder has threads inside and outside, and 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, and is used to connect the telescopic pipe assembly.

[0045] Optionally, it is installed at the lower end of the telescopic tube. That is, the upper cylinder has internal and external threads, and the lower cylinder has internal and external threads, which are used to connect the telescopic tube. The middle cylinder is used as a stopper for the movement of the telescopic tube; the lower cylinder has internal and external threads, which is used to connect the plug (1220).

[0046] Plug (1290); attached Fig.29 Main view, attached Fig.18 For top view, Fig.30 The middle section view of the main view;

[0047] From the two views, the assembly is a machined two-section cylindrical structure, divided into upper and lower parts, solid structure, airtight. The upper part has threads for connecting the telescopic tube; it can also be used to connect the connector (1210) at the lower end of the telescopic tube; the lower part is used as a stopper for the movement of the telescopic tube.

[0048] The telescopic tube assembly comprises: a telescopic tube and a limit stopper, which are formed into one piece by thread connection or welding, or machining.

[0049] In this case, the telescopic tube is sometimes described as a telescopic rod, but they all refer to the same part.

[0050] Telescopic tube (1300): has openings or slots for gas or liquid to enter the expansion tube valve seat, exert pressure on it, and cause it to expand and deform. The number of telescopic tubes is X according to design requirements, where X is an integer greater than or equal to 2.

[0051] The upper and lower parts of the telescopic tube are threaded inside and outside for connecting the connector (1210) or the plug (1220) or the limit stop (1220)

[0052] Limit stop (1220): attached Fig.23 Main view, attached Fig.24 For top view, Fig.25 The middle section view of the main view;

[0053] From the three views, the assembly is a machined two-section cylindrical structure, divided into upper and lower parts, with a through hole in the middle, which is a passage for gas or liquid. The upper part has threads for connecting the telescopic tube; it can also be used to connect the connector (1210) at the lower end of the telescopic tube. The lower part is used as a stopper for the movement of the telescopic tube;

[0054] Static piston (1250), attached Fig.37 Main view, attached Fig.38 It is a top view;

[0055] 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 telescopic tube.

[0056] The upper part has a connection hole with a thread for connecting the valve body to the end cover (1200); the upper part has a connection thread for connecting the valve seat clamp (1270); 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 connection pipe connector and is a common product on the market.

[0057] Moving piston (1260), attached Fig.39 Main view, attached Fig.40 It is a top view;

[0058] From the combination of the two figures, the movable piston (1260) is a machined two-section structural component, divided into an upper and lower part, 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.

[0059] The upper part is processed with threads on the outside for connecting the expansion pipe; the upper part has connecting threads for connecting the valve seat clamp (1270); the lower part has pagoda-shaped connecting patterns for connecting the expansion pipe valve seat (1500). The pagoda-shaped connecting patterns are the external structure of general pipe connectors for connecting air pipes and are common products on the market.

[0060] Optionally, the static piston and the dynamic piston have the same structure, so they can be used interchangeably.

[0061] Optionally, a connection hole or groove for the sensing part (6300) is reserved on the outer side of the universal static piston and the movable piston; the hole may be threaded or not threaded, and when the threaded hole is not used, it is blocked with a top screw.

[0062] The static piston has a through hole inside and a groove in the middle, and an O-ring or a piston ring or a skeleton-type sealing ring is arranged in the groove;

[0063] The upper part is provided with a connection hole, which is threaded and used for connecting the valve body and the end cover;

[0064] The upper part has a connecting thread for connecting the valve seat clamp;

[0065] The lower part has a pagoda-shaped connection pattern, which is used to connect the expansion pipe valve seat;

[0066] The moving piston has a through hole inside and a groove in the middle, and an O-ring or a piston ring or a skeleton-type sealing ring is arranged in the groove;

[0067] The upper part is processed with threads on the outside for connecting the protective cover;

[0068] The upper part has a connecting thread for connecting the valve seat clamp;

[0069] There is a pagoda-shaped connection pattern at the bottom, which is used to connect the expansion pipe valve seat.

[0070] Expansion pipe valve seat (1500), attached Fig. 27 Main view, attached Fig.26 For top view, Fig.28 The middle section view of the main view;

[0071] The expansion pipe valve seat is preferably made of elastic material, such as rubber, silicone and other soft materials, and preferably has a circular tube shape.

[0072] The cross section is preferably circular, i.e. Fig.26 shape, hollow inside; the cross section can also be square, elliptical, polygonal or other shapes.

[0073] The expansion pipe valve seat is preferably a single-layer structure;

[0074] Or the expansion tube valve seat can be optionally a multi-layer structure; it can also be called a nested structure, for example, a nested circular tube with one layer inside another.

[0075] For example, the outer layer is a tubular expansion tube valve seat with a length of 200 mm, a thickness of 5 mm, an outer diameter of 100 mm, and an inner diameter of 90 mm; the inner layer is a tubular expansion tube valve seat with a length of 200 mm, an outer diameter of 90 mm, a thickness of 3 mm, and an inner diameter of 84 mm. The inner layer is inserted into the outer layer and embedded together to form a double-layer expansion tube valve seat. According to the above example, the nested layers can be increased to form an expansion tube valve seat with 3 or 4 layers or even N layers; that is, the number of expansion tube layers is N, and N is a positive integer greater than or equal to 2.

[0076] 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.

[0077] 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.

[0078] For example, a multilayer sensor is filled with a relatively low pressure gas between the layers. An inert gas, such as 0.2 bar nitrogen, is preferred, and the gas pipe is connected to an external pressure sensor;

[0079] When the expansion tube valve seat is torn, causing nitrogen leakage, the pressure sensor alarms, thereby determining the status of the valve seat.

[0080] 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.

[0081] Multi-layer expansion pipe valve seat, optional, each layer has the same thickness.

[0082] 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;

[0083] 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;

[0084] Multi-layer expansion pipe valve seat, optional, inner and outer layers of the same material.

[0085] The expansion pipe valve seat is made of elastic material;

[0086] The expansion pipe valve seat is in the shape of a circular tube;

[0087] 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;

[0088] When the expansion pipe valve seat has a multi-layer structure, each layer of the expansion pipe valve seat has a different thickness;

[0089] When the expansion pipe valve seat has a multi-layer structure, each layer of the expansion pipe valve seat has the same thickness;

[0090] 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;

[0091] 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;

[0092] 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.

[0093] Valve seat clamp (1270); attached Fig.41 Main view, attached Fig.42 For top view, Fig.43 It is the left view, attached Fig.44 The middle section view of the main view;

[0094] 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)

[0095] 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.

[0096] 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;

[0097] 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.

[0098] Connecting extension tube (1240) Fig.15 , Fig.16 , Fig.17 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,

[0099] 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;

[0100] The valve body assembly (2000) includes: a main valve body and an extended valve body.

[0101] The valve body assembly (2000) is composed of the following two methods:

[0102] The first method has only one main valve body, which is an independent valve body assembly (2000)

[0103] The second method is to connect the main valve body and the extension valve body together to form a valve body assembly (2000)

[0104] Among them, the main valve body and the extended valve body have the following features:

[0105] 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.

[0106] The main valve body is named M-port. The main valve body has only one M-port.

[0107] 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.

[0108] 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;

[0109] 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;

[0110] 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;

[0111] 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.

[0112] 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.

[0113] The extended valve body in the valve body assembly (2000) is named KN-pass.

[0114] 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;

[0115] 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.

[0116] 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;

[0117] K is an integer greater than or equal to 0, that is:

[0118] When K = 0, there is no extended valve body;

[0119] When K = 1, there is 1 extended valve body;

[0120] When K=2, there are 2 extended valve bodies;

[0121] …

[0122] There are K extended valve bodies up to K, where K is an integer greater than or equal to 0.

[0123] 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.

[0124] When T = 0, there is no path, which is equivalent to a blind plate; that is, N is a blind plate;

[0125] 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;

[0126] 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;

[0127] 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;

[0128] 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;

[0129] 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.

[0130] 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.

[0131] Each of the above KN passes is independent of each other because of the different K values;

[0132] 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;

[0133] 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.

[0134] 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.

[0135] Complete valve body assembly:

[0136] Example 1: Fig.91 Illustrated embodiment

[0137] 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;

[0138] Extension valve body, K = 2, that is, the valve contains 2 N-way extension valve bodies;

[0139] Among them, 1N-way is a three-way valve body with 3 through holes, which is a three-way;

[0140] Among them, 2N-way is a two-way valve body with 2 through holes, which is a two-way;

[0141] Add the main valve body to form a complete valve body (2000) in the figure;

[0142] 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).

[0143] 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).

[0144] 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:

[0145] 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.

[0146] 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.

[0147] The sealing components include:

[0148] 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.

[0149] The connection components include:

[0150] The connecting bolts, nuts, gaskets, etc. between various parts are generally well-known products in the market.

[0151] 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.

[0152] Components Fig.11 , Fig.12 , Fig.13 , Fig.14 Examples are provided for several common connection forms of the sealing actuator (1000);

[0153] Multi-stage telescopic tube assembly Fig.45 , Fig.46 , Fig.47 Examples are provided of several composition forms of the sealing actuator (1000);

[0154] In addition, the multi-stage telescopic tube 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). Due to the different numbers of telescopic tubes, it has different forms, which are described below.

[0155] like Fig.45 , is a schematic diagram of a two-expansion tube assembly without a moving piston and an expansion tube valve seat, as can be seen from the figure;

[0156] In the first step, the top of the second stage telescopic tube (1310) (i.e. Fig.45 The top of the view is connected to the limit stop (1220A), and the lower section is connected to the limit stop (1220B);

[0157] In the second step, the bottom of the first-stage telescopic tube (1300) (i.e. Fig.45 The bottom of the view), connected to the limit stop (1220);

[0158] The third step is to insert the combined second-stage telescopic tube into the first-stage telescopic tube;

[0159] Step 4: The bottom of the second stage telescopic tube (1310) (i.e. Fig.45 bottom of the view), connecting plug (1290);

[0160] Step 5: The top of the first stage telescopic tube (1300) (i.e. Fig.45 top view), connecting the connector (1210);

[0161] Step 6, the assembly of step 5, connecting the valve body and the end cover (1200), to form a schematic diagram of a two-stage telescopic telescopic tube structure.

[0162] Fig.46 , is to install the static piston and the dynamic piston on the basis of the above;

[0163] Fig.47 , is to add a 1st level telescopic tube on the basis of the 2nd level to form a 3-level telescopic tube assembly.

[0164] The number of telescopic tubes refers to the number of telescopic stages. Two telescopic tubes are defined as two-stage telescopic tubes, three are defined as three-stage telescopic tubes, and so on. The number of telescopic stages is S, which is an integer greater than or equal to 2.

[0165] Multi-stage telescopic tube assembly, assembly process description:

[0166] first Fig.48 This is its schematic diagram. The assembly process is as follows Figures 49 to 53 ;

[0167] like Fig.49 , a connecting piece (1210) is connected to the upper part of the multi-stage expansion pipe assembly (1300); after the connecting piece (1210) and the static piston (1250) are connected, the expansion pipe valve seat (1500) is inserted into the static piston (1250);

[0168] Secondly, according to Fig.50 , continue to install two valve seat clamps (1270);

[0169] According to Fig.51 , installing a plug (1290) at the lower end of the multi-stage telescopic tube assembly (1300);

[0170] According to Fig.52 , installing the movable piston (1260) and connecting it to the expansion pipe valve seat (1500);

[0171] Finally, according to Fig.53 , install two valve seat clamps (1270), respectively connect the static piston (1250) and the dynamic piston (1260), to form Fig.48 Multi-section telescopic tube assembly, Fig.54 A cross-sectional view thereof;

[0172] Different multi-section telescopic tube assemblies, based on the above, can optionally extend the length of the telescopic tube, or connect an extension tube (1240) Fig.15 , Fig.16 As shown, a multi-section telescopic tube assembly is formed;

[0173] The connecting piece (1210) is connected to the valve body and the end cover (1200) by bolts or threads, and a gasket is provided in between to form a complete sealing actuator assembly (1000);

[0174] According to the above, the different sealing actuator components (1000) are composed of part numbers (1000), (1000A), (1000B), (1000X) and so on.

[0175] The valve body assembly (2000) includes: a first mode, in which the main valve body is independently composed; a second mode, in which the main valve body and the extended valve body are combined.

[0176] 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.

[0177] The working principle of the expansion pipe sealing valve is as follows:

[0178] 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);

[0179] Figure 2 This is his left view. Figure 3 It is his main view. Figure 4 It is his top view;

[0180] 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;

[0181] 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;

[0182] Fig. 9 When the sealing actuator (1000) is not inflated with air or liquid, the expansion pipe valve seat (1500) is not expanded, the moving piston (1260) is at the holding point position, and the expansion pipe valve seat (1500) is in the original state, that is, the valve open position;

[0183] 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 of the lower edge of the moving piston (1260) shown in the figure is defined as the holding point, that is, the position where the horizontal line of the displacement distance in the figure intersects with the midpoint of the lower edge of the moving piston (1260).

[0184] Fig.10 This is a schematic diagram showing that when the sealing actuator (1000) is inflated with air or liquid, the expansion pipe valve seat (1500) expands, the movable piston (1260) is at a limit point, i.e., a valve closing position, and the limit point is at the position of the movable piston (1260);

[0185] 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 lower edge of the movable piston (1260) shown in the figure, that is, the position where the horizontal line of the displacement distance in the figure intersects with the midpoint of the lower edge of the movable piston (1260), is defined as the limit point.

[0186] 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, which is also called the eccentric distance.

[0187] The sealing actuator has a limit point and a holding point. There is a displacement distance between the holding point and the limit point, also called the eccentric distance.

[0188] The holding point refers to the position of the lower edge of the moving piston when the sealing actuator is not inflated with air or liquid, that is, when the expansion pipe valve seat is not expanded, and all components are in their normal initial positions, which is defined as the holding point;

[0189] The limit point refers to the position of the lower edge of the moving piston when the sealing actuator is inflated with air or liquid, that is, after the expansion tube valve seat expands and reaches the maximum value of the designed air pressure, expansion size, and displacement distance, and the expansion tube valve seat fits tightly against the inner wall of the valve body assembly. This is defined as the limit point.

[0190] By means of the expansion tube valve seat (1500) in the sealing actuator (1000), changes occur during the process of filling or releasing gas or liquid; that is, when the external device is filled with gas or liquid, the expansion tube valve seat (1500) expands due to the filling of gas or liquid, thereby sealing the medium flow cavity inside the valve body and closing the valve;

[0191] 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;

[0192] 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.

[0193] Because the expansion and contraction process of the expansion tube valve seat (1500) during the filling and discharging of gas or liquid realizes the control process of medium flow, cutting off or regulating; and there is a displacement distance between the holding point and the limit point, also called the eccentric distance. In view of this, the valve in this case is named as an eccentric expansion tube sealing valve.

[0194] The above is the principle of the valve's closing, opening and regulating process for the flow of media.

[0195] Telescopic tube assembly: Telescopic tube and limit stop

[0196] The valve body assembly is composed of the following two methods:

[0197] In the first method, there is only one main valve body, which independently constitutes the valve body assembly;

[0198] The second method is to connect the main valve body and the extension valve body together to form a valve body assembly;

[0199] 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.

[0200] 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.

[0201] That is, the treatment methods of the parts of all valve components in contact with the medium include:

[0202] The medium contact surface inside the valve is not treated;

[0203] Or make an attachment layer or coating on the medium contact surface inside the valve;

[0204] Or perform anti-corrosion surface treatment on the medium contact surface inside the valve;

[0205] During the application of this case, the following effects can be effectively achieved.

[0206] 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 on 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 8. Compared with the cited patent, when this case is used as a tank bottom valve and the like, full-diameter flow can be achieved, that is, the flow of the medium is not blocked by the valve plate or the sealing actuator (1000). BRIEF DESCRIPTION OF THE DRAWINGS

[0214] Figure 1Schematic diagram of the valve structure of Example 1 of the present scheme;

[0215] Figure 2 It is a schematic diagram of the structure of Example 1 of the present scheme, a left view;

[0216] Figure 3 It is a structural schematic diagram of Example 1 of the present scheme, a front view;

[0217] Figure 4 1 is a schematic diagram of the structure of Example 1 of the present scheme, a top view;

[0218] Figure 5 For along Figure 4 The top view of the expansion tube valve seat (1500) is in a non-expanded state along the BB' line, and the valve is in an open position; the second stage of the expansion tube inside the sealing actuator (1000) is within the first stage.

[0219] 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 a closed position; after the expansion tube valve seat (1500) is inflated by 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). The second stage of the telescopic tube inside the sealing actuator assembly (1000) extends out of the first stage.

[0220] 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;

[0221] 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;

[0222] Fig. 9 A schematic diagram of the valve opening position when the sealing actuator (1000) is not inflated with air or liquid; and a schematic diagram of the holding point position;

[0223] Fig.10 When the sealing actuator (1000) is inflated with air or liquid, the valve is in the closed position; a schematic diagram of the position of the limit point;

[0224] Fig. 9 and Fig.10 , it can be seen that there is a displacement distance between the holding point and the limit point; it is also called the eccentric distance;

[0225] Fig.11 is a schematic diagram of a sealing actuator (1000);

[0226] Fig.12 is a schematic diagram of a seal actuator assembly (1000A), wherein the seal actuator assembly is lengthened;

[0227] Fig.13 It is a schematic diagram of a sealed actuator assembly (1000B), which is equipped with a connecting extension tube (1240) to extend the overall length;

[0228] Fig.14 A schematic diagram of a sealed actuator assembly (1000X) having an extended connecting extension tube (1240A) installed to extend the overall length;

[0229] Fig.15 A view showing two connecting pieces (1210) and a connecting extension pipe (1240) combined together, which are threaded, flanged or welded;

[0230] Fig.16 A view showing two connecting pieces (1210) and a connecting extension pipe (1240A) combined together, which are threaded, flanged or welded;

[0231] Fig.17 for Fig.16 A cross-sectional view of

[0232] Fig.18 It is a front view of the valve body connection end cover (1200); Fig.19 A top view of the valve body connection end cover (1200);

[0233] Fig. 20 is a front view of the connecting member (1210); Fig.21 A cross-sectional view of the connecting member (1210); Fig. 22 is a top view of the connecting member (1210);

[0234] Fig.23 is a front view of the limit stop (1220); Fig.24 is a top view of the limit stop (1220);

[0235] Fig.25 A cross-sectional view of the limit stop (1220);

[0236] Fig.26 is a top view of the expansion pipe valve seat (15000); Fig. 27 is a front view of the expansion pipe valve seat (15000);

[0237] Fig.28 is a cross-sectional view of an expansion pipe valve seat (15000);

[0238] Fig.29 is a front view of the plug (1290); Fig.30 A top view of the plug (1290);

[0239] Fig.31 For the telescopic tube assembly: a top view of the telescopic tube; Fig.32 For the telescopic tube assembly: the front view of the telescopic tube;

[0240] Fig.33 For the telescopic tube assembly: a cross-sectional view of the telescopic tube;

[0241] Fig.34 A schematic diagram of the connection between the first-stage telescopic tube (1300), the connecting member (1210) and the limit stopper (1220);

[0242] Fig.35 A schematic diagram of the connection between the second-stage telescopic tube (1310) and the limit stop (1220A) and the limit stop (1220B);

[0243] Fig.36 A schematic diagram of the connection between the third-stage telescopic tube (1320) and the limit stopper (1220X);

[0244] Fig.37 is a front view of the moving piston (1250); Fig.38 is a top view of the moving piston (1250);

[0245] Fig.39 is a front view of the static piston (1260); Fig.40 is a top view of the static piston (1260);

[0246] Fig.41 is a front view of the valve seat clamp (1270); Fig.42 is a top view of the valve seat clamp (1270);

[0247] Fig.43 It is a left side view of the valve seat clamp (1270); Fig.44 is a cross-sectional view of a valve seat clamp (1270);

[0248] Fig.45 It is a schematic diagram of the installation of the secondary expansion pipe assembly of the sealing actuator assembly (1000), and the expansion pipe valve seat (1500) and the dynamic and static pistons are not connected;

[0249] Fig.46 It is a schematic diagram of the installation of the secondary expansion tube assembly of the sealing actuator assembly (1000), and the expansion tube valve seat (1500) is not connected;

[0250] Fig.47It is a schematic diagram of the installation of a three-stage expansion pipe assembly of a sealing actuator assembly (1000), and the expansion pipe valve seat (1500) is not connected;

[0251] Figures 48 to 53 Description of the description, first Fig.48 This is its schematic diagram. The assembly process is as follows Figures 49 to 53 ;

[0252] Fig.49 , which is a schematic diagram of connecting a connector (1210) to the upper part of the multi-stage expansion pipe assembly (1300); after the connector (1210) and the static piston (1250) are connected, the expansion pipe valve seat (1500) is inserted into the static piston (1250);

[0253] Fig.50 , is a schematic diagram of continuing to install two valve seat clamps (1270);

[0254] Fig.51 , a schematic diagram of installing a plug (1290) at the lower end of a multi-stage telescopic tube assembly (1300);

[0255] Fig.52 , a schematic diagram of installing the movable piston (1260) and connecting the expansion pipe valve seat (1500);

[0256] Fig.53 , to install two valve seat clamps (1270), respectively connected to the static piston (1250) and the dynamic piston (1260), to form Fig.48 A schematic diagram of a multi-stage telescopic tube assembly;

[0257] Figures 54 to 80 The valve body assembly (2000) includes: a main valve body and an extension valve body.

[0258] Main valve body example range is Figures 63 to 80 ;Extended valve body example range is Figures 54 to 80 ; The main valve body and the extended valve body are partially overlapping.

[0259] Fig.54 It is a main view of a pass, commonly known as a blind plate (2010); Fig.55 It is a top view of a blind plate, commonly known as a blind plate.

[0260] Fig.56 It is a through deformation structure, which is a blind hole tube, and a front view of the blind hole tube (2020); Fig.58 A top view of it; Fig.57 Its cross-sectional view.

[0261] Fig.59 It is a front view of a two-way, straight pipe (2030); Fig.60 A top view of it.

[0262] Fig.61 It is a front view of a two-way elbow (2040); Fig.62 A top view of it.

[0263] Fig.63 It is a front view of a tee, a straight pipe tee (2050); Fig.64 A top view of it.

[0264] Fig.65 It is a front view of a tee, an oblique or elbow tee (2060); Fig.66 A top view of it.

[0265] Fig.67 It is a front view of a cross, a straight pipe cross (2070); Fig.68 A top view of it.

[0266] Fig.69 It is a front view of a cross, an oblique or curved pipe cross (2080); Fig.70 A top view of it.

[0267] Fig.71 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.72 A top view of it.

[0268] Fig.73 It is a front view of a cross-type, ectopic straight pipe cross-type (2100); Fig.74 A top view of it.

[0269] Fig.75 It is a front view of a five-way straight five-way (2110); Fig.76 A top view of it.

[0270] Fig.77 It is a front view of a six-way straight pipe six-way (2120); Fig.78 A top view of it.

[0271] Fig.79 It is a front view of a six-way, oblique or curved six-way (2130); Fig.80 A top view of it.

[0272] Figure 81 to Figure 87 , not including Fig.82 ,as well as Fig.84 ; 5 common modes of three-way expansion pipe sealing valve embodiments. The 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; part of it has a mechanical limit switch (6100) and an inductive limit switch (6200), and an inductive part (6300).

[0273] Fig.81This is a schematic diagram of Example 1, in which the sealing actuator (1000) and the main valve body of the straight pipe tee (2050) are connected and combined via a connecting assembly (4000), and the sealing assembly (3000) is between the sealing actuator (1000) and the straight pipe tee (2050).

[0274] Fig.83 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).

[0275] Fig.85 This is a schematic diagram of Example 3, in which the sealing actuator (1000X) is combined with the straight pipe tee (2050) main valve body.

[0276] Fig.86 This is a schematic diagram of Example 4, in which the sealing actuator (1000X) is combined with the straight pipe tee (2050) main valve body. The valve body is equipped with a mechanical limit switch, and the principle is described in the three cited patents.

[0277] Fig.87 This is a schematic diagram of Example 5, 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.

[0278] In Examples 1 to 5, the sealing actuator (1000) partially blocks the medium channel in the valve body, that is, when the medium flows in the internal cavity of the valve body assembly, it is not full-bore, and the cross-sectional area of ​​the expansion tube valve seat (1500) is included in the cross-sectional area of ​​the medium channel.

[0279] Fig.82 This is a schematic diagram of Example 6, in which the sealing actuator (1000) is combined with a valve body assembly including a straight pipe tee (2050) main valve body and an extended valve body (2030).

[0280] Fig.84 This is a schematic diagram of Example 7, in which the sealing actuator (1000) is combined with a valve body assembly including an inclined or curved tee (2060) main valve body and an extended valve body (2030).

[0281] Fig.88 This is a schematic diagram of Example 8, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a tee, with 2 straight pipes, 1 elbow, and a total of 3 extended valve bodies, and the valve is in the open state;

[0282] Fig.89This is a schematic diagram of Example 9, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with two straight pipes and one four-way valve, a total of three extended valve bodies, and the valve is in the open state;

[0283] Fig.90 This is a schematic diagram of Example 10, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with two straight pipes and one five-way valve, a total of three extended valve bodies, and the valve is in the open state;

[0284] Fig.91 This is a schematic diagram of Example 11, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with two straight pipes and one oblique three-way valve, a total of three extended valve bodies, and the valve is in the open state;

[0285] Fig.92 This is a schematic diagram of Example 12, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with one straight pipe and one oblique four-way valve, a total of two extended valve bodies, and the valve is in the open state;

[0286] Fig.93 This is a schematic diagram of Example 13, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with one straight pipe, two straight three-way valves, a total of three extended valve bodies, and the valve is in the open state;

[0287] Fig.94 This is a schematic diagram of Example 14, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with 1 straight pipe, 1 elbow, 2 straight three-way valves, a total of 4 extended valve bodies, and the valve is in the open state;

[0288] Fig.95 This is a schematic diagram of Example 15, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with 1 straight pipe, 1 curved pipe, 2 oblique or curved 3-way valves, a total of 4 extended valve bodies, and the valve is in the open state;

[0289] Fig.96 This is a schematic diagram of Example 16, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a three-way valve, with 1 straight pipe, 2 long straight pipes, 1 curved pipe, a total of 4 extended valve bodies, and the valve is in the open state;

[0290] Fig.97 This is a schematic diagram of Example 17, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is an oblique tee, with 1 straight pipe, 2 oblique or curved 3-way pipes, 1 curved pipe, a total of 4 extended valve bodies, and the valve is in the open state;

[0291] Fig.98 This is a schematic diagram of Example 18, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is an oblique tee, with 1 straight pipe, 2 long straight pipes, 1 curved pipe, a total of 4 extended valve bodies, and the valve is in the open state;

[0292] Fig.99 This is a schematic diagram of Example 19, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is an oblique tee, with 1 straight pipe, 1 curved pipe, and 2 extended valve bodies in total, and the valve is in the open state;

[0293] In embodiments 6 to 19, the sealing actuator (1000) is located above the medium channel inside the valve body (in the direction shown in the figure), that is, when the medium flows in the internal cavity of the valve body assembly, it is full-bore, and the cross-sectional area of ​​the expansion tube valve seat (1500) is not included in the cross-sectional area of ​​the medium channel. Full-bore flow is achieved. The forward flow direction shown in the embodiment diagram is from the left to the main valve body and out from the bottom; the reverse flow direction is from the bottom to the left of the main valve body; the reverse flow direction is not suitable for powders, particles, viscous fluids and other media;

[0294] Fig.100 This is a schematic diagram of Example 20, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 1 straight pipe, 1 curved pipe, and 2 extended valve bodies in total, and the valve is in the open state;

[0295] Fig.101 This is a schematic diagram of Example 21, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 1 straight pipe, 1 four-way, a total of 2 extended valve bodies, and the valve is in the open state;

[0296] Fig.102 This is a schematic diagram of Example 22, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 1 straight pipe, 1 five-way, a total of 2 extended valve bodies, and the valve is in the open state;

[0297] Fig.103 This is a schematic diagram of Example 23, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 1 straight pipe, 1 oblique or curved tee, a total of 2 extended valve bodies, and the valve is in the open state;

[0298] Fig.104 This is a schematic diagram of Example 24, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight three-way, with 1 oblique or curved four-way, a total of 1 extended valve body, and the valve is in the open state; it contains an inductive limit switch.

[0299] Fig.105 This is a schematic diagram of Example 25, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, there are 2 straight tees, a total of 2 extended valve bodies, and the valve is in the open state;

[0300] Fig.106 This is a schematic diagram of Example 26, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 2 straight tees, 1 elbow, a total of 3 extended valve bodies, and the valve is in the open state;

[0301] Fig.107 This is a schematic diagram of Example 27, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 2 oblique or curved tees, 1 elbow, a total of 3 extended valve bodies, and the valve is in the open state;

[0302] Fig.108 This is a schematic diagram of Example 28, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a straight tee, with 2 long straight pipes, 1 curved pipe, and a total of 3 extended valve bodies, and the valve is in the open state;

[0303] Fig.109 This is a schematic diagram of Example 29, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is an oblique or curved tee, with 2 oblique or curved tees, 1 elbow, a total of 3 extended valve bodies, and the valve is in the open state;

[0304] Fig.110 This is a schematic diagram of Example 30, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is an oblique or curved tee, with 2 long straight pipes, 1 curved pipe, a total of 3 extended valve bodies, and the valve is in the open state;

[0305] Fig.111 This is a schematic diagram of Example 31, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is an oblique or curved tee, with 1 straight pipe, 1 curved pipe, and a total of 2 extended valve bodies, and the valve is in the open state;

[0306] The above-mentioned embodiments 1 to 31 are all one-inlet and multiple-outlet, one-inlet and one-outlet, or multiple-inlet and one-outlet. Some are full-diameter and some are not full-diameter. Some have long extension distances and some have short extension distances. They can be selected according to needs.

[0307] Fig.112This is a schematic diagram of Example 32, in which a sealing actuator (1000) is combined with a valve body assembly (2000), the main valve body is an oblique or curved tee, with 1 oblique or curved 4-way, a total of 1 extended valve body, and the valve is in an open state; the characteristic is that a long sealing actuator (1000) is used, that is, Fig.12 (1000A) form.

[0308] Fig.113 Schematic diagram of Example 33, the sealing actuator (1000) is combined with the valve body assembly (2000), the main valve body is an oblique or curved tee, with an oblique or curved or straight 5-way, and a straight pipe 5-way, a total of 2 extended valve bodies, the valve is in the open state; the characteristic is that a long sealing actuator (1000) is used, that is, Fig.12 (1000A) form.

[0309] The above-mentioned embodiments 32 to 33 are all of the multi-inlet and multi-outlet type. Some places inside the valve body are full-diameter, some are not full-diameter, some extend for a long distance, and some extend for a short distance, which can be selected according to needs.

[0310] Fig.114 This is a schematic diagram of Example 34, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), and the main valve body is a four-way valve with the valve in the open state; there is no extended valve body.

[0311] Fig.115 This is a schematic diagram of Example 35, in which the sealing actuator assembly (1000X) is combined with the valve body assembly (2000), and the main valve body is a four-way valve with the valve in the open state; there is no extended valve body.

[0312] Fig.116 This is a schematic diagram of Example 36, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a four-way, has 1 straight pipe, a total of 1 extended valve body, and the valve is in the open state;

[0313] Fig.117 This is a schematic diagram of Example 37, in which the sealing actuator assembly (1000) is combined with the valve body assembly (2000), the main valve body is a four-way valve, there is no extended valve body, and there is an induction sensor assembly, and the valve is in an open state;

[0314] Through the simple examples of embodiments 34 to 37, when the main valve body of embodiments 1 to 33 is replaced with a four-way valve, its functional application is not affected.

[0315] 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.

[0316] There are various combinations of the sealing actuator assembly (1000), and there are various main valve bodies;

[0317] The two are combined together to form an embodiment, the number of which is M, where M is an integer greater than or equal to 1.

[0318] In addition, some of the differential seal actuator components (1000) of the three-way valve body and the four-way valve body can be interchanged;

[0319] In addition, the mechanical limit switch (6100) and the inductive limit switch (6200), as well as the inductive component (6300), can be installed on any embodiment. In another embodiment, the valve body assembly (2000) includes two combinations:

[0320] In the first mode, the main valve body is independently formed. The main valve body can be a three-way valve body or a four-way valve body, as shown in the embodiment; similarly, there can also be a 5-way, 6-way, 7-way or even N-way main valve body, where N is an integer greater than or equal to 3.

[0321] Main valve bodies with different diameters can be matched with sealing actuators (1000) (1000A) (1000B) (1000X) and other components. Fig.45 , Fig.46 , Fig.47 An example is provided, which is a composition form of several multi-stage telescopic tube assemblies of a sealing actuator assembly; the sealing actuator assemblies (1000) respectively constructed can also be used interchangeably according to the design;

[0322] The sealing actuator (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, i.e., an expansion tube sealing valve. In the embodiment of this case, the sealing actuator (1000) has four common combinations, (1000) (1000A) (1000B) (1000X).

[0323] In the first mode, the main valve body is independently formed; 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.

[0324] In the first embodiment, the actual implementation is T, where T is an integer greater than or equal to 1.

[0325] In addition, the sealing actuator assembly (1000) has multiple combinations, and the mechanical limit switch (6100) and the inductive limit switch (6200), as well as the inductive component (6300), can be installed on any embodiment.

[0326] As mentioned above, the number of embodiments formed by various combinations is S, where S is an integer greater than or equal to 1.

[0327] The second method is composed of a main valve body and an extended valve body.

[0328] 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.

[0329] Among them, the main valve body is described in the same way as in the first method;

[0330] 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;

[0331] When the valve body assembly (2000) adopts the second method, which is composed of a main valve body and an extended valve body, the sealing actuator assembly (1000) adopts four common combination forms.

[0332] 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.

[0333] 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.

[0334] 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.

[0335] Figures 118 to 130 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.

[0336] The feed port is generally shown above and the discharge port is generally shown below or obliquely below. The feed port and discharge port axis refers to the center line of the cavity cross section inside the front valve cavity along the medium flow direction.

[0337] The axis of the sealing actuator (1000) refers to the connecting line of the center of the cross section of the expansion tube valve seat, which coincides with or is parallel to the center connecting line of the cross section of the cavity inside the valve cavity along the flow direction of the medium.

[0338] Tilt discharge valve Fig.118 , Fig.119 , Fig.120 , Fig.123 , Fig.124 As shown, the three-way valve body is deformed, the feed inlet is directly above the figure, and the discharge port is below or diagonally below.

[0339] Fig.118, is a schematic diagram of Example 38, in which the sealing actuator (1000) and the valve body assembly (2060) are combined to form a discharge valve; generally, the feed port is the inlet directly above the drawing, and the discharge port is obliquely below, and the sealing actuator (1000) is installed obliquely; the characteristic is that when the expansion pipe valve seat (1500) of the sealing actuator (1000) expands, the feed port and the discharge port of the three-way valve body (2060) are closed at the same time;

[0340] Fig.119 , is a schematic diagram of Example 39, in which the sealing actuator (1000) and the valve body assembly (2200) are combined together to form a discharge valve; generally, the feed port is the inlet directly above the drawing, and the discharge port is diagonally below or 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 (2200) are closed at the same time; the sealing actuator (1000) does not hinder the discharge of the material, and the medium is directly discharged from the discharge port, and the valve passes the medium through the entire diameter.

[0341] Fig.120 , is a schematic diagram of Example 40, in which the sealing actuator (1000) and the valve body assembly (2200) are combined to form a discharge valve; generally, the feed port is the inlet directly above the drawing, and the discharge port is diagonally below or below, 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, the feed port and the discharge port of the three-way valve body (2200) are closed at the same time; the sealing actuator (1000) hinders the discharge of the material, and the medium is discharged from the discharge port, and the valve does not pass the medium at all.

[0342] Fig.121 , which is a schematic diagram of Example 41, is composed of Example 39 connected to an extended valve body (2210); 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 (2200) are closed at the same time; the sealing actuator (1000) does not hinder the discharge of materials, the medium is directly discharged from the discharge port, and the full diameter of the valve passes the medium; and the feed port and the discharge port are coaxial, and it can be seen in the figure that the center lines of the feed port and the discharge port coincide.

[0343] Fig.122 , which is a schematic diagram of Example 42, is composed of Example 40 connected to an extended valve body (2210); 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 (2200) are closed at the same time; the sealing actuator (1000) hinders the discharge of the material, the medium is discharged from the discharge port, and the valve does not pass the medium at all; and the feed port and the discharge port are coaxial, and it can be seen in the figure that the center lines of the feed port and the discharge port coincide.

[0344] Fig.123 , which is a schematic diagram of Example 43, is characterized in that the axis of the sealing actuator (1000) is parallel to the axis of the feed port and the discharge port, and when the expansion tube valve seat (1500) expands, the feed port and the discharge port of the three-way valve body (2220) are closed at the same time; the sealing actuator (1000) does not hinder the discharge of the material, the medium is discharged from the discharge port, and the valve passes the medium through the entire diameter.

[0345] Fig.124 , which is a schematic diagram of Example 44, is characterized in that the axis of the sealing actuator (1000) is parallel to the axis of the feed port and the discharge port, and when the expansion tube valve seat (1500) expands, the feed port and the discharge port of the three-way valve body (2220) are closed at the same time; the sealing actuator (1000) hinders the discharge of the material, and the medium is discharged from the discharge port, and the valve does not allow the medium to pass through the entire diameter.

[0346] Fig.125 , which is a schematic diagram of Example 45, is characterized in that the axis of the sealing actuator (1000X) is parallel to the axis of the feed port and the discharge port, and when the expansion tube valve seat (1500) expands, only the discharge port of the three-way valve body (2220) is closed; the sealing actuator (1000X) hinders the discharge of the material, and the medium is discharged from the discharge port, and the valve does not pass the medium at all.

[0347] Fig.126 , which is a schematic diagram of Example 46; the characteristic is that the axis of the sealing actuator (1000) is parallel to the axis of the feed port and the discharge port, and when the expansion tube valve seat (1500) expands, the feed port and the discharge port of the three-way valve body (2220) are closed; the sealing actuator (1000) does not hinder the discharge of materials, and the medium is discharged from the discharge port, and the valve medium channel is full-diameter; it is suitable for occasions where there is insufficient space above the feed port to disassemble the sealing actuator (1000).

[0348] Fig.127 , which is a schematic diagram of Example 47, is characterized in that the axis of the sealing actuator (1000) is parallel to the axis of the feed port and the discharge port. When the expansion tube valve seat (1500) expands, the feed port and the discharge port of the three-way valve body (2220) are closed at the same time; the sealing actuator (1000) hinders the discharge of the material, and the medium is discharged from the discharge port, and the valve does not pass the medium at full diameter. It is generally suitable for occasions where there is insufficient disassembly space above the sealing actuator (1000). Double-tube discharge valve such as Figure 128 to Figure 129 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.

[0349] Fig.128, is a schematic diagram of Example 48, 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) is inclined at the lower discharge port, there are two discharge ports, the straight pipe can discharge the medium directly, and prevent some viscous material media from sticking to the oblique discharge port. The oblique discharge port plays an auxiliary role and is also conducive to the expansion pipe valve seat (1500) of the sealing actuator (1000) not sticking to the medium when expanding. The sealing actuator (1000) hinders the discharge of the material, and the medium is discharged from the discharge port. The valve does not pass the medium at full bore.

[0350] Fig.129 , is a schematic diagram of Example 48 using a four-way valve body deformed (2250), 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) is inclined at the lower discharge port, there are two discharge ports, and the straight pipe can discharge the medium directly to avoid some viscous material media from sticking to the oblique discharge port. The oblique discharge port plays an auxiliary role and is also conducive to the expansion pipe valve seat (1500) of the sealing actuator (1000) not sticking to the medium when expanding. The sealing actuator (1000) blocks the discharge of the material, and the medium is discharged from the discharge port. The deformation of the four-way valve body (2250) allows the valve to pass the medium through the full diameter.

[0351] Fig.130 , is a schematic diagram of embodiment 50, the four-way valve body is deformed (2270), 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) does not hinder the discharge of materials, the medium is discharged from the discharge port, and the valve passes the medium through the full bore. The sealing actuator (1000) 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 mainly used for granular media.

[0352] Combined valve island Figures 131 to 137 As shown;

[0353] Fig.131 Valve island embodiment 52 (100030) is composed of 2 Fig.82 Example 6, add a Fig.114 Embodiment 34, adds two sections of extended valve body straight pipe two-way (2030); adds one section of four-way extended valve body with an expansion joint at the lower end, and combines them together to form; the expansion joint four-way extended valve body is easy to install, and the three separately controlled embodiment valves can realize the conveying of media in different directions.

[0354] Fig.132 Valve island embodiment 51 (10000) is composed of 2 Fig.81Embodiment 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.

[0355] Fig.133 Valve island embodiment 53 (100040), consisting of 4 Fig.114 The embodiment 34 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 the different embodiments 34 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 both opened, No. 3 can be opened; when No. 1, No. 2 and No. 3 are all opened, No. 4 can be opened; the opening sequence is controlled, which is a valve island application with locking sequence.

[0356] Fig.134 and Fig.135 Embodiments 54 and 55 differ from embodiments 51 and 52 in that the sealing actuator (1000) does not hinder material discharge, the medium is discharged from the discharge port, and the valve allows the medium to pass through its entire diameter.

[0357] Fig.136 Valve island embodiment 56 (10050) is compared with embodiment 53, and has the same function. The sealing actuator (1000) does not hinder the flow of the medium, and the medium passes through the entire diameter of the valve. The characteristic is that the opening sequence is controlled, and it is a valve island application with a locking sequence.

[0358] Fig.137 Valve island embodiment 57 (100030), consisting of 4 Fig.115 The embodiment 35 is combined and 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; the medium inlet and outlet of the valve island are controlled separately under the control of each independent embodiment 35, which is a valve island application that can freely select output control.

[0359] Fig.138, is a schematic diagram of Example 49, the four-way valve body is deformed (2260), 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) hinders the discharge of the material, and the medium is discharged from the discharge port, and the valve does not pass the medium with a full diameter. 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 or granular material media from sticking to the oblique discharge port. The oblique discharge port plays an auxiliary role and is mainly used for granular media.

[0360] The embodiments of the valve island may vary according to actual conditions such as demand and design, and there may be S embodiments, where S is an integer greater than or equal to 1. DETAILED DESCRIPTION

[0361] The technical solution of this solution is further described in detail below in conjunction with specific implementation methods.

[0362] In all embodiments of the expansion pipe sealing valve of this case, the following components are included:

[0363] The invention comprises: a sealing actuator component (1000), a valve body component (2000), a sealing component (3000) and a connecting component (4000).

[0364] As well as optional mounting parts, mechanical limit switches (6100) and inductive limit switches (6200), as well as inductive parts (6300) and so on.

[0365] First, in all embodiments, all valve components, the treatment methods of the internal parts in contact with the medium include:

[0366] The medium contact surface inside the valve is not treated;

[0367] Or make an attachment layer or coating on the medium contact surface inside the valve;

[0368] Or perform anti-corrosion surface treatment on the medium contact surface inside the valve.

[0369] 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).

[0370] Third, the sealed actuator assembly (1000), attached to this case Figures 11 to 14 ,include:

[0371] The valve body is connected to an end cover (1200), a connecting piece (1210), and a plug (1220);

[0372] Telescopic tube assembly: a telescopic tube (1300) and a limit stop (1220), wherein the telescopic tube has different numbers according to different sizes (e.g., 1310 or 1320), and the limit stop has different numbers according to different sizes (e.g., 1220A or 1220B or 1220X);

[0373] Static piston (1250), dynamic piston (1260), expansion pipe valve seat (1500), valve seat clamp (1270);

[0374] Connecting extension tube (1240) Fig.15 , as shown in 16 and 17, as an optional part, installed or not installed;

[0375] Valve body connection end cover (1200), attached Fig.18 Main view, attached Fig.19 It is a top view;

[0376] The valve body connection end cover (1200) is a circular plate, similar to a blind plate, but with a through hole in the middle;

[0377] by Fig.11 An example is provided, which is a connection form of a sealing actuator (1000);

[0378] Multi-stage telescopic tube assembly Fig.45 , Fig.46 , Fig.47 Examples are provided of several composition forms of the sealing actuator (1000);

[0379] In addition, the multi-stage telescopic tube 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). Due to the different numbers of telescopic tubes, it has different forms, which are described below.

[0380] like Fig.45 , is a schematic diagram of a two-expansion tube assembly without a moving piston and an expansion tube valve seat, as can be seen from the figure;

[0381] In the first step, the top of the second stage telescopic tube (1310) (i.e. Fig.45 The top of the view is connected to the limit stop (1220A), and the lower section is connected to the limit stop (1220B);

[0382] In the second step, the bottom of the first-stage telescopic tube (1300) (i.e. Fig.45 The bottom of the view), connected to the limit stop (1220);

[0383] The third step is to insert the combined second-stage telescopic tube into the first-stage telescopic tube;

[0384] Step 4: The bottom of the second stage telescopic tube (1310) (i.e. Fig.45 bottom of the view), connecting plug (1290);

[0385] Step 5: The top of the first stage telescopic tube (1300) (i.e. Fig.45 top view), connecting the connector (1210);

[0386] Step 6, the assembly of step 5, connecting the valve body and the end cover (1200), to form a schematic diagram of a two-stage telescopic telescopic tube structure.

[0387] Fig.46 , is to install the static piston and the dynamic piston on the basis of the above;

[0388] Fig.47 , is to add a 1st level telescopic tube on the basis of the 2nd level to form a 3-level telescopic tube assembly.

[0389] The number of telescopic tubes refers to the number of telescopic stages. Two telescopic tubes are defined as two-stage telescopic tubes, three are defined as three-stage telescopic tubes, and so on. The number of telescopic stages is S, which is an integer greater than or equal to 2.

[0390] Multi-section telescopic tube assembly, assembly process description:

[0391] first, Fig.48 This is its schematic diagram. The assembly process is as follows Figures 49 to 53 ;

[0392] Secondly, Fig.49 , a connecting piece (1210) is connected to the upper part of the multi-stage expansion pipe assembly (1300); after the connecting piece (1210) and the static piston (1250) are connected, the expansion pipe valve seat (1500) is inserted into the static piston (1250);

[0393] Again according to Fig.50 , continue to install two valve seat clamps (1270);

[0394] According to Fig.51 , installing a plug (1290) at the lower end of the multi-stage telescopic tube assembly (1300);

[0395] Continue according to Fig.52 , installing the movable piston (1260) and connecting it to the expansion pipe valve seat (1500);

[0396] Finally, according to Fig.53 , install two valve seat clamps (1270), respectively connect the static piston (1250) and the dynamic piston (1260), to form Fig.48 Multi-section telescopic tube assembly, Fig.54 A cross-sectional view thereof;

[0397] Different multi-section telescopic tube assemblies: Based on the above, you can choose to extend the length of the telescopic tube or connect the extension tube (1240) Fig.15 , Fig.16 As shown, a multi-section telescopic tube assembly is formed;

[0398] The connecting piece (1210) is connected to the valve body and the end cover (1200) by bolts or threads, and a gasket is provided in between to form a complete sealing actuator assembly (1000);

[0399] Finally, different sealing actuators (1000) are selected according to the requirements, and the part numbers are subdivided into (1000), (1000A), (1000B), (1000X), etc. Fourth, the valve body assembly includes: a main valve body and an extended valve body.

[0400] The valve body assembly (2000) includes two combinations:

[0401] In the first mode, the main valve body is independently formed. The main valve body can be a three-way valve body or a four-way valve body, as shown in the embodiment; similarly, there can also be a 5-way, 6-way, 7-way or even N-way main valve body, where N is an integer greater than or equal to 3.

[0402] Main valve bodies with different diameters can be matched with sealing actuators (1000) (1000A) (1000B) (1000X) and other components. Fig.45 , Fig.46 , Fig.47 An example is provided, which is a composition form of several multi-stage telescopic tube assemblies of a sealing actuator assembly; the sealing actuator assemblies (1000) respectively constructed can also be used interchangeably according to the design;

[0403] The sealing actuator (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, i.e., an expansion tube sealing valve. In the embodiment of this case, the sealing actuator (1000) has four common combinations, (1000) (1000A) (1000B) (1000X).

[0404] In the first mode, the main valve body is independently formed; 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.

[0405] In the first embodiment, the actual implementation is T, where T is an integer greater than or equal to 1.

[0406] In addition, the sealing actuator assembly (1000) has multiple combinations, and the mechanical limit switch (6100) and the inductive limit switch (6200), as well as the inductive component (6300), can be installed on any embodiment.

[0407] As mentioned above, the number of embodiments formed by various combinations is S, where S is an integer greater than or equal to 1.

[0408] The second method is composed of a main valve body and an extended valve body.

[0409] 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.

[0410] Among them, the main valve body is described in the same way as in the first method;

[0411] 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;

[0412] When the valve body assembly (2000) adopts the second mode and is composed of a main valve body and an extended valve body; the sealing actuator assembly (1000)

[0413] Choose from 4 common combinations.

[0414] 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.

[0415] 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.

[0416] 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.

[0417] When the valve body assembly (2000) adopts the second method, any extended valve body thereof:

[0418] According to the design, it can be: zero-pass blind plate, 1-pass pipe, i.e. blind plate deformation structure, 2-pass, 3-pass, 4-pass, 5-pass, 6-pass, ... up to K-pass form with K diameters, and the number of diameters K is an integer greater than or equal to 0.

[0419] 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;

[0420] K is an integer greater than or equal to 0, that is:

[0421] When K = 0, there is no extended valve body;

[0422] When K = 1, there is 1 extended valve body;

[0423] When K=2, there are 2 extended valve bodies;

[0424] ..., until K, there are K extended valve bodies, K is an integer greater than or equal to 0.

[0425] 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.

[0426] When T = 0, there is no path, which is equivalent to a blind plate; that is, N is a blind plate;

[0427] 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;

[0428] 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;

[0429] 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;

[0430] 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;

[0431] 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.

[0432] 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.

[0433] Each of the above KN passes is independent of each other because of the different K values;

[0434] 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;

[0435] 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.

[0436] 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.

[0437] Fourth, the sealing of the connection positions of the various parts of the valve body of the complete embodiment, and the connection method;

[0438] Sealing is achieved through a sealing assembly (3000); including various common gaskets, such as rubber gaskets, PTFE gaskets, O-rings, metal sealing gaskets, etc.

[0439] 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.

[0440] 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.

[0441] 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.

[0442] 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.

[0443] 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;

[0444] When inflated, the air pressure is between 0Mpa and 2.0Mpa; or other expressions, between 0bar and 20bar;

[0445] 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.

[0446] The above pressure values ​​are preferred values, except for special designs.

[0447] 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.

[0448] 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.

[0449] 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 eccentric expansion pipe sealing valve, comprising: Seal actuator assembly, valve body assembly, sealing assembly, connection assembly; The sealing actuators include: Valve body connection end cover, connector, plug, telescopic tube assembly: telescopic tube and limit stopper, moving piston, static piston, expansion tube valve seat, valve seat clamp, connecting extension tube; The valve body assembly includes: a main valve body and an extended valve body; Its characteristics are: The expansion tube assembly in the seal actuator assembly is in the process of filling or releasing gas or liquid from the expansion tube valve seat, that is, the process of closing and opening the valve; When inflating with air or liquid, the valve seat of the expansion tube expands and lengthens, driving the expansion tube to extend step by step; When the air or liquid is released, the expansion tubes are retracted step by step under the elastic force of the expansion tube valve seat; Displacement between the holding point and the limit point.

2. The eccentric expansion pipe sealing valve according to claim 1 is 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 eccentric expansion pipe sealing valve according to claim 1, characterized in that Also includes: It is stated that The telescopic tube assembly includes: a telescopic tube and a limit stop Telescopic tube: has openings or slots for gas or liquid to enter the expansion tube valve seat; The number of telescopic tubes is X, where X is an integer greater than or equal to 2; The scaling level is S, where S is an integer greater than or equal to 2; The upper and lower parts of the telescopic tube are threaded inside and outside; Limit stop: There is a through hole in the middle, which is a passage for gas or liquid.

4. The eccentric expansion pipe sealing valve according to claim 1, characterized in that Also includes: It is stated that 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 eccentric expansion pipe sealing valve according to claim 1, characterized in that Also includes: The connecting extension pipe is a pipe which is hollow inside and has threads or flanges on the top and bottom.

6. The eccentric expansion pipe sealing valve according to claim 1, characterized in that Also includes: The sealing actuator has a limit point and a holding point. There is a displacement distance between the holding point and the limit point, also called the eccentric distance. The holding point refers to the position of the lower edge of the moving piston when the sealing actuator is not inflated with air or liquid, that is, when the expansion pipe valve seat is not expanded, and all components are in their normal initial positions, which is defined as the holding point; The limit point refers to the position of the lower edge of the moving piston when the sealing actuator is inflated with air or liquid, that is, after the expansion tube valve seat expands and reaches the maximum value of the designed air pressure, expansion size, and displacement distance, and the expansion tube valve seat fits tightly against the inner wall of the valve body assembly. This is defined as the limit point.

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