A simple motor valve for gas pipeline

Abstract

The present invention discloses a simple motor valve for gas pipelines, which belongs to the field of gas valve bodies. A gas channel is provided in the valve body of the present invention, and a lower sealing plate and an upper sealing plate are sequentially provided on the inner wall of the valve body, and the upper part of the lower sealing plate and the lower part of the upper sealing plate are both kept in communication with the gas channel; a channel sleeve is also provided between the lower sealing plate and the upper sealing plate, and a connecting hole communicating with the gas channel is provided on the side of the channel sleeve facing the lower sealing plate, and a closed ring is provided at the bottom of the inner cavity of the channel sleeve, and a matching closing gasket is provided above the closed ring, as well as a power actuator for driving the closing gasket to operate to close or open the closed ring. The present invention overcomes the current situation in the prior art that the valve body structure is relatively complex and the production cost is high, optimizes the valve body circulation channel structure, simplifies the overall installation structure, and helps to reduce production costs on the basis of ensuring performance.

Description

Technical Field

[0001] The present invention relates to the technical field of gas valve bodies, and more particularly to a simple motor valve for a gas pipeline. Background Art

[0002] A gas valve is a safety device used in gas pipeline projects to control technical parameters such as gas pressure and flow. It offers excellent control characteristics and a tight seal, suitable for use on pipelines carrying various fuel media, including city gas, liquefied petroleum gas, natural gas, and oxygen. Ensuring the tightness and safety of gas pipeline systems is crucial. Currently, a wide variety of gas valve designs are available on the market, each with its own distinct usage and performance.

[0003] For example, Chinese patent application No. 2019210865839 discloses an indoor gas self-testing safety intelligent control valve, which includes a valve body with a main flow cavity, a sealing interface and a detection interface respectively communicating with the main flow cavity; a sealing ring for controlling flow in the main flow cavity, connected to a power actuator; and a pressure sensor on the detection interface. For example, Chinese patent application No. 2014104408005 discloses a gas shut-off valve, comprising a valve disc capable of longitudinal movement relative to a valve seat, mounted on an adjusting rod maintained longitudinally within a valve housing, a linear unit driven by a motor via a reduction gear device, and an edge seal on the valve seat.

[0004] For example, Chinese Patent Application No. 2018116060068 discloses a gas valve and gas appliance, comprising a proportional valve having a proportional valve air inlet and a proportional valve air outlet; and a plug valve having a plug valve air inlet and three plug valve air outlets, wherein the proportional valve air outlet is directly connected only to the plug valve air inlet, and by providing three plug valve air outlets on the plug valve, the plug valve air outlets are respectively connected to the inner ring gas channel, the middle ring gas channel, and the outer ring gas channel of the burner. Chinese Patent Application No. 2020102573696 discloses a motor gas proportional valve, comprising a motor end cover having a mounting channel formed therein, the output shaft of the stepper motor being located in the mounting channel and being threadedly connected to a transmission screw, the mounting channel being provided with a transmission sleeve connected to the transmission screw, the bottom of the transmission sleeve extending out of the mounting channel and being fixed with a flow regulator.

[0005] The above applications involve various common valve body structures, but the general structural design is still relatively complex. Control of production costs has always been a hot topic in the industry, and various new valve body structure designs have been emerging one after another. Summary of the Invention

[0006] 1. Technical problem to be solved by the invention

[0007] The purpose of the present invention is to overcome the current situation in the prior art where the valve body structure is relatively complex and the production cost is high. It is intended to provide a simple motor valve for gas pipelines, which reasonably optimizes the valve body flow channel structure and simplifies the overall installation structure. It helps to reduce production costs and improve enterprise production efficiency while ensuring performance.

[0008] 2. Technical solution

[0009] In order to achieve the above object, the technical solution provided by the present invention is:

[0010] The present invention provides a simple motor valve for a gas pipeline, comprising a valve body, a gas channel being provided within the valve body, a lower sealing plate and an upper sealing plate being provided in sequence on the inner wall of the valve body along the direction of gas flow, the upper part of the lower sealing plate and the lower part of the upper sealing plate both being maintained in communication with the gas channel; a channel sleeve is further provided between the lower sealing plate and the upper sealing plate, a communicating hole communicating with the gas channel is provided on the side of the channel sleeve facing the lower sealing plate, and a closed ring opening is provided at the bottom of the inner cavity of the channel sleeve, a corresponding closed gasket is provided above the closed ring opening, and a power actuator for driving the closed gasket to operate to close or open the closed ring opening.

[0011] Furthermore, the power actuator includes a power screw driven by a power motor. The power screw is located inside the channel sleeve and the lower thread is fitted with a pressure-lifting cylinder. The power screw drives the pressure-lifting cylinder to move linearly. The bottom of the pressure-lifting cylinder is a pressing plate, and a closing pad is fitted under the pressing plate. The pressure-lifting cylinder drives the closing pad to close or open the closing ring.

[0012] Furthermore, there is a certain gap between the closed ring opening inside the channel sleeve and the inner wall of the channel sleeve, and a guide member that cooperates with the pressing plate is provided on the inner wall of the channel sleeve, and the guide member guides the linear displacement of the pressure-lifting cylinder.

[0013] Furthermore, a tower-shaped sealing ring is provided between the pressure-boosting cylinder and the channel sleeve. The top of the tower-shaped sealing ring is fixed to the top of the channel sleeve, and the bottom of the tower-shaped sealing ring is locked to the outside of the bottom of the channel sleeve through a fastening ring.

[0014] Furthermore, there is an extended upper connecting shell on the upper part of the valve body, and the top of the channel sleeve is an upper fixed plate, which is connected to the upper connecting shell, and a placement cavity is opened in the middle of the upper fixed plate; at least one circle of sealing grooves is opened on the outer wall surface of the bottom of the channel sleeve, and is sealed with the corresponding lower sealing plate and upper sealing plate through a sealing ring; at least one circle of sealing grooves is opened on the outer wall surface of the upper part of the channel sleeve, and is sealed with the upper connecting shell through a sealing ring.

[0015] Furthermore, a power mounting plate for installing a power actuator is provided above the valve body, and an outer cylinder is provided on the power mounting plate, and the power actuator is installed inside the outer cylinder. A circuit mounting plate and an outer cover shell are also provided above the power mounting plate, and the circuit mounting plate and the outer cover shell are connected to the power mounting plate through a snap-fit structure.

[0016] Furthermore, the snap-on structure includes elastic snap-on rods arranged on the power mounting plate and symmetrically located on both sides of the outer cylinder. Two groups of snap-on tips are provided on the outer sides of the snap-on rods on both sides, which are spaced apart from each other. The snap-on tips are snap blocks protruding outward, and the upper wall surface of the snap-on tips is an inclined wall surface to facilitate smooth engagement; corresponding holes and grooves are provided on the circuit mounting plate and the outer cover shell for the snap-on rods to pass through and engage.

[0017] Furthermore, a mounting hole for the outer tube to pass through is correspondingly opened on the circuit mounting plate, and buckle holes for the buckle rod to pass through are provided on both sides of the mounting hole. The clip tip at the bottom of the buckle rod passes through the buckle hole and pops out to be clamped on the circuit mounting plate.

[0018] Furthermore, a matching hole for the outer tube to pass through is correspondingly opened on the outer cover shell, and matching side holes for the snap rod to pass through are provided on both sides of the matching hole, and a matching protrusion protruding outward is provided on the inner wall of the matching side hole, and the card tip on the upper part of the snap rod is ejected and locked on the matching protrusion.

[0019] Furthermore, a detection sensor is provided on the valve body behind the channel sleeve, which is directly connected to the gas channel, and a mounting cavity for installing the detection sensor is correspondingly provided on the upper fixing plate at the top of the channel sleeve.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] (1) The simple motor valve of the present invention effectively simplifies the internal structure of the gas channel through the special design of the lower sealing plate and the upper sealing plate, and the application of the corresponding channel sleeve, which helps to reduce production costs and ensure the smooth flow of gas.

[0023] (2) The simple motor valve of the present invention has a pressing plate comprising an upper and lower disc body, wherein the lower disc body is embedded in the inner cavity of the sealing gasket and corresponds to the lower disc body, and the upper disc body is pressed on the top of the sealing gasket and is not less than the edge of the sealing gasket, so as to achieve a fully stable pressing process of the sealing gasket on the sealing ring mouth to prevent gas leakage.

[0024] (3) The simple motor valve of the present invention, the circuit mounting plate and the outer cover shell are connected to the power mounting plate through a snap-fit structure, which ensures the tightness of the connection while facilitating the operator to achieve detachable and quick installation, making production and application more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the motor valve structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the motor valve of the present invention;

[0027] Figure 3 Schematic diagram of the internal structure of the valve body in the present invention;

[0028] Figure 4 Schematic diagram of the structure of the channel sleeve in the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the present invention after removing the outer cover shell;

[0030] Figure 6 Schematic diagram of the structure of the fastener in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the circuit mounting board in the present invention;

[0032] Figure 8 It is a structural schematic diagram of the outer cover shell in the present invention.

[0033] Explanation of the numbers in the schematic diagram:

[0034] 100, valve body; 101, upper connecting shell; 102, lower sealing plate; 103, upper sealing plate; 104, gas channel; 105, detection sensor;

[0035] 200, channel sleeve; 201, communicating hole; 202, sealing groove; 203, closed ring opening; 204, placement cavity; 205, upper fixing plate; 206, installation cavity; 207, guide member;

[0036] 300, power screw; 301, lifting cylinder; 302, tower-shaped sealing ring; 303, fastening ring; 304, pressing plate; 305, closing gasket;

[0037] 400, power mounting plate; 401, outer cylinder; 402, buckle rod; 403, clamping tip;

[0038] 500, circuit mounting plate; 501, mounting hole; 502, snap hole;

[0039] 600, outer cover shell; 601, matching hole; 602, matching side hole; 603, matching protrusion. DETAILED DESCRIPTION

[0040] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0041] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] The present invention will be further described below with reference to the embodiments.

[0043] Example 1

[0044] like Figures 1-8 As shown, a simple motor valve for a gas pipeline in this embodiment includes a valve body 100, a gas channel 104 is provided in the valve body 100, and a lower sealing plate 102 and an upper sealing plate 103 are provided on the inner wall of the valve body 100 in sequence along the gas flow direction, and the upper part of the lower sealing plate 102 and the lower part of the upper sealing plate 103 are both kept in communication with the gas channel 104; a channel sleeve 200 is also provided between the lower sealing plate 102 and the upper sealing plate 103, and a connecting hole 201 communicating with the gas channel 104 is provided on the side of the channel sleeve 200 facing the lower sealing plate 102, and a closed ring opening 203 is provided at the bottom of the inner cavity of the channel sleeve 200, and a corresponding closing gasket 305 is provided above the closed ring opening 203, as well as a power actuator for driving the closing gasket 305 to operate to close or open the closed ring opening 203, thereby realizing the on-off control of the gas channel 104.

[0045] Specifically, if Figure 2 and Figure 3 As shown, in this embodiment, the lower sealing plate 102 is an arc-shaped plate arranged at the front end of the gas channel 104, gradually extending upward from the bottom of the annular inner wall of the valve body 100, and maintaining a gap with the upper wall of the inner wall of the valve body 100. Figure 2 In this example, the semicircular lower sealing plate 102, which occupies the lower half of the space in the gas passage 104, is used. Accordingly, the upper sealing plate 103 is an arc-shaped plate disposed at the rear end of the lower sealing plate 102, gradually extending downward from above the annular inner wall of the valve body 100, and maintaining a gap with the lower inner wall of the valve body 100. In this way, the gas passes through the gap channel above the lower sealing plate 102, between the lower sealing plate 102 and the upper sealing plate 103, and through the gap channel below the upper sealing plate 103, ultimately forming a smooth gas passage 104.

[0046] Correspondingly, in this embodiment, a channel sleeve 200 is provided between the lower sealing plate 102 and the upper sealing plate 103. An extended upper connecting shell 101 is provided on the upper portion of the valve body 100 for subsequent connection with the power mounting plate 400 for mounting the power actuator and the outermost cover shell 600, thereby safely enclosing the entire internal structure. Figure 2 and Figure 3 As shown, the top of the channel sleeve 200 is an upper fixed plate 205, which is fixedly connected to the upper connecting shell 101, and a placement cavity 204 is opened in the middle of the upper fixed plate 205; at least one circle of sealing grooves 202 are opened on the outer wall surface of the bottom of the channel sleeve 200, and are sealed with the corresponding lower sealing plate 102 and upper sealing plate 103 through sealing rings; at least one circle of sealing grooves 202 are opened on the upper outer wall surface of the channel sleeve 200, and are sealed with the upper connecting shell 101 through sealing rings.

[0047] Specifically, the channel sleeve 200 is a cylindrical structure with a cavity inside, and a connecting hole 201 is provided on the side facing the lower sealing plate 102. The connecting hole 201 is consistent with the position of the gap channel above the lower sealing plate 102, that is, the gas still forms an unobstructed gas channel 104 through the gap channel above the lower sealing plate 102, the connecting hole 201, the inner cavity of the channel sleeve 200, between the lower sealing plate 102 and the upper sealing plate 103, and the gap channel below the upper sealing plate 103. In this embodiment, there is a certain height corresponding overlapping portion between the top of the lower sealing plate 102 and the bottom of the upper sealing plate 103. That is, taking the lower sealing plate 102 as a semicircular plate that occupies half of the space of the gas channel 104 as an example, the upper sealing plate 103 extends downward to a height exceeding half of the space of the gas channel 104, so that the bottom of the channel sleeve 200 can be sealed and connected to the top of the lower sealing plate 102 and the upper sealing plate 103 respectively. Specifically, two circles of sealing grooves 202 are opened on the bottom outer wall of the channel sleeve 200, and are sealed by two layers of O-rings at the top of the lower sealing plate 102 and the upper sealing plate 103 respectively; correspondingly, two circles of sealing grooves 202 are opened on the upper outer wall of the channel sleeve 200, and are sealed between the upper connecting shell 101 by two layers of O-rings, thereby fully avoiding gas leakage and ensuring safe use.

[0048] like Figure 2As shown, in actual application of this embodiment, since the bottom of the inner cavity of the channel sleeve 200 is provided with a closed ring opening 203 arranged circumferentially, the top height of the closed ring opening 203 corresponds to the same level as the bottom of the communicating hole 201, and the bottom of the closed ring opening 203 is connected to the bottom wall of the channel sleeve 200 by an inclined surface that gradually tilts downward and outward, so that the opening formed by the closed ring opening 203 gradually increases downward. When the power actuator drives the closing gasket 305 to press downward on the closed ring opening 203, the closed ring opening 203 is blocked. At this time, the gas entering through the communicating hole 201 cannot continue to enter the rear channel through the closed ring opening 203, that is, the gas channel 104 is in a disconnected state; when the power actuator drives the closing gasket 305 to lift upward and separate from the closed ring opening 203, the closed ring opening 203 is in an open state. At this time, the gas entering through the communicating hole 201 continues to enter the rear channel through the closed ring opening 203, that is, the gas channel 104 is in a flowing state; in this way, the on-off state of the gas can be controlled.

[0049] In this embodiment, the special design of the lower sealing plate 102 and the upper sealing plate 103, as well as the corresponding application of the channel sleeve 200, effectively simplifies the internal structure of the gas channel 104 compared with the most common gas valve body structure currently on the market, helps to reduce production costs, and ensures the smooth flow of gas.

[0050] Example 2

[0051] The simple motor valve for gas pipeline of this embodiment has the same basic structure as that of embodiment 1. Figure 2 As shown, in this embodiment, the power actuator includes a power screw 300 driven by a power motor. The power screw 300 is located inside the channel sleeve 200 and a pressure-lifting cylinder 301 is provided in a threaded sleeve at the lower part. The power screw 300 drives the pressure-lifting cylinder 301 to move linearly. The bottom of the pressure-lifting cylinder 301 is a pressing plate 304, and a closing pad 305 is provided under the pressing plate 304. The pressure-lifting cylinder 301 drives the closing pad 305 to close or open the closed ring mouth 203.

[0052] Specifically, there is still a certain distance between the closed loop 203 inside the channel sleeve 200 and the inner wall of the channel sleeve 200 to facilitate the smooth lifting and lowering process of the closing gasket 305, and a guide member 207 is provided on the inner wall of the channel sleeve 200 to guide and cooperate with the pressing plate 304, and the guide member 207 guides the linear displacement of the pressure-lifting cylinder 301. For example, a guide block is provided on the inner wall of the channel sleeve 200, and a guide groove is provided on the outer wall of the pressing plate 304, so that the rotation of the power screw 300 drives the linear lifting and lowering displacement of the pressure-lifting cylinder 301; or a guide groove is provided on the inner wall of the channel sleeve 200, and a guide block is provided on the outer wall of the pressing plate 304. It should be noted that other power drive structures in the industry can also be used in this embodiment, which can drive the closing gasket 305 to close or open the closed loop 203, and they will not be fully described here.

[0053] In this embodiment, the pressing plate 304 includes two parts, the lower part of the disc, which is embedded in the inner cavity of the sealing gasket 305 and corresponds to it, and the upper part of the disc is pressed on the top of the sealing gasket 305 and is not smaller than the edge of the sealing gasket 305, so as to achieve a fully stable pressing process of the sealing gasket 305 to prevent gas leakage.

[0054] In this embodiment, a tower-shaped sealing ring 302 is installed between the pressure-raising cylinder 301 and the channel sleeve 200. The top of the tower-shaped sealing ring 302 is fixed to the top of the channel sleeve 200, that is, it is correspondingly fixed to the upper fixing plate 205. The bottom of the tower-shaped sealing ring 302 is locked to the bottom outer side of the channel sleeve 200, that is, the pressure plate 304, via a fastening ring 303 to prevent gas leakage. More specifically, the upper portion of the pressure-raising cylinder 301 is a frustum-shaped structure with a gradually increasing cross-sectional area downward. Between the bottom of the frustum and the pressure plate 304, a groove is formed for the fastening ring 303 to lock, further enhancing the locking and sealing performance.

[0055] Example 3

[0056] The simple motor valve for gas pipeline of this embodiment has the same basic structure as the above embodiment. Figure 5 As shown, a power mounting plate 400 for mounting a power actuator is further provided above the valve body 100, an outer cylinder 401 is provided on the power mounting plate 400, and the power actuator is mounted inside the outer cylinder 401, and a circuit mounting plate 500 and an outer cover shell 600 are further provided above the power mounting plate 400, and both the circuit mounting plate 500 and the outer cover shell 600 are connected to the power mounting plate 400 by a snap-fit structure.

[0057] like Figure 6As shown, the snap-fit structure includes snap-fit rods 402 with a certain elasticity, which are arranged on the power mounting plate 400 and symmetrically located on both sides of the outer cylinder 401. In the initial state, the snap-fit rods 402 gradually move upward and slightly away from the outer cylinder 401; two groups of snap-fit tips 403 are respectively provided on the outer sides of the snap-fit rods 402 that are separated from each other, and are spaced apart from each other. The snap-fit tips 403 are outwardly protruding blocks, and the upper wall surface of the snap-fit tips 403 is an inclined wall surface to facilitate smooth engagement; the circuit mounting plate 500 and the outer cover shell 600 are correspondingly provided with holes and grooves for the snap-fit rods 402 to pass through and engage.

[0058] Correspondingly, if Figure 7 As shown, a mounting hole 501 is correspondingly provided on the circuit mounting plate 500 for the outer cylinder 401 to pass through, and snap holes 502 are provided on both sides of the mounting hole 501 for the snap rod 402 to pass through. During installation, the circuit mounting plate 500 is gradually put downward over the snap rod 402, and finally the clip tip 403 at the lower part of the snap rod 402 passes through the snap hole 502 and pops out to be locked on the circuit mounting plate 500.

[0059] Correspondingly, if Figure 8 As shown, a matching hole 601 for the outer cylinder 401 to pass through is correspondingly opened on the outer cover shell 600, and matching side holes 602 for the snap rod 402 to pass through are provided on both sides of the matching hole 601, and matching protrusions 603 protruding outward are provided on the inner wall of the matching side hole 602. During installation, the outer cover shell 600 is gradually put downward over the snap rod 402, and finally the card tip 403 on the upper part of the snap rod 402 is ejected and stuck on the matching protrusion 603, realizing detachable and quick installation.

[0060] Example 4

[0061] The simple motor valve for gas pipeline of this embodiment has the same basic structure as the above embodiment. Figure 2 and Figure 3 As shown, in this embodiment, a detection sensor 105 is further provided on the valve body 100 behind the channel sleeve 200. The detection sensor 105 is directly connected to the gas channel 104. The upper fixing plate 205 at the top of the channel sleeve 200 and the upper connecting shell 101 are both provided with corresponding mounting cavities 206 for mounting the detection sensor 105. The detection sensor 105 is electrically connected to a circuit board mounted on the circuit mounting plate 500 via a circuit. The specific configuration of the circuit board is conventional technology and will not be described here. The detection sensor 105 can be a common sensor such as a pressure sensor, which can be adapted according to the specific application requirements to achieve timely online detection of the gas on / off status, providing timely alarms and controlling the gas on / off to prevent gas safety accidents.

[0062] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A simple motor valve for a gas pipeline, comprising a valve body (100), a gas passage (104) being provided in the valve body (100), and characterized in that: A lower sealing plate (102) and an upper sealing plate (103) are sequentially provided on the inner wall of the valve body (100) along the gas flow direction. The upper part of the lower sealing plate (102) and the lower part of the upper sealing plate (103) are both connected to the gas channel (104). The lower sealing plate (102) is provided at the front end of the gas channel (104), gradually extending upward from the lower part of the annular inner wall of the valve body (100), and maintaining a gap with the upper wall of the inner wall of the valve body (100). The upper sealing plate (103) is an arc-shaped plate provided at the rear end of the lower sealing plate (102), gradually extending downward from the upper annular inner wall of the valve body (100), and maintaining a gap with the lower inner wall of the valve body (100); the gas passes through the upper gap channel of the lower sealing plate (102), between the lower sealing plate (102) and the upper sealing plate (103), and the lower gap channel of the upper sealing plate (103) to finally form a smooth gas channel (104); A channel sleeve (200) is further provided between the lower sealing plate (102) and the upper sealing plate (103). The channel sleeve (200) is a cylindrical structure with a cavity therein. A connecting hole (201) communicating with the gas channel (104) is provided on the side of the channel sleeve (200) facing the lower sealing plate (102). The connecting hole (201) is in the same position as the gap channel above the lower sealing plate (102). The gas passes through the gap channel above the lower sealing plate (102) and the connecting hole (201). The through hole (201), the inner cavity of the channel sleeve (200), the space between the lower sealing plate (102) and the upper sealing plate (103), and the gap channel below the upper sealing plate (103) form a smooth gas channel (104); the top of the lower sealing plate (102) and the bottom of the upper sealing plate (103) have a certain height corresponding overlapping portion, so that the bottom outer wall surface of the channel sleeve (200) can be sealed and connected with the top of the lower sealing plate (102) and the upper sealing plate (103) respectively; A closed ring opening (203) is provided at the bottom of the inner cavity of the channel sleeve (200), the top height of the closed ring opening (203) corresponds to being flush with the bottom of the communicating hole (201), and the bottom of the closed ring opening (203) is connected to the bottom wall of the channel sleeve (200) via an inclined surface that gradually tilts downward and outward, so that the opening formed by the closed ring opening (203) gradually increases downward; a corresponding closed pad (305) is provided above the closed ring opening (203), as well as a power actuator for driving the closed pad (305) to operate to close or open the closed ring opening (203); The valve body (100) has an upper connecting shell (101) extending therefrom. The top of the channel sleeve (200) is an upper fixing plate (205), which is connected to the upper connecting shell (101). A placement cavity (204) is provided in the middle of the upper fixing plate (205). At least one sealing groove (202) is provided on the outer wall surface of the bottom of the channel sleeve (200), and is sealed with the corresponding lower sealing plate (102) and upper sealing plate (103) through a sealing ring. At least one sealing groove (202) is provided on the outer wall surface of the upper portion of the channel sleeve (200), and is sealed with the upper connecting shell (101) through a sealing ring. A power mounting plate (400) for mounting a power actuator is further provided above the valve body (100), an outer cylinder (401) is provided on the power mounting plate (400), and the power actuator is mounted inside the outer cylinder (401), a circuit mounting plate (500) and an outer cover shell (600) are further provided above the power mounting plate (400), and both the circuit mounting plate (500) and the outer cover shell (600) are connected to the power mounting plate (400) via a snap-fit structure; The power actuator includes a power screw (300) driven by a power motor. The power screw (300) is located inside the channel sleeve (200) and is provided with a lifting and pressing cylinder (301) in a threaded manner at the lower portion. The power screw (300) drives the lifting and pressing cylinder (301) to move linearly. The bottom of the lifting and pressing cylinder (301) is a pressing plate (304). A sealing pad (305) is provided below the pressing plate (304). The lifting and pressing cylinder (301) drives the sealing pad (305) to seal. or opening the closed ring opening (203); the pressing plate (304) comprises an upper and lower disc body, wherein the lower disc body is embedded in the inner cavity of the closed pad (305) and corresponds to it, and the upper disc body is pressed on the top of the closed pad (305) and is not smaller than the edge of the closed pad (305); the upper part of the pressure cylinder (301) is a cone-shaped structure with a gradually increasing cross-sectional area downward, and a groove area for locking the fastening ring (303) is formed between the bottom of the cone and the pressing plate (304); The snap-fit structure comprises elastic snap-fit rods (402) provided on the power mounting plate (400) and symmetrically located on both sides of the outer cylinder (401); two sets of snap-fit tips (403) are respectively provided on the opposite outer sides of the snap-fit rods (402) and arranged at intervals in the upper and lower directions; the snap-fit tips (403) are snap-fit blocks protruding outward, and the upper wall surface of the snap-fit tips (403) is an inclined wall surface, so as to facilitate smooth snap-fitting; the circuit mounting plate (500) and the outer cover shell (600) are correspondingly provided with holes and slots for the snap-fit rods (402) to pass through and snap-fit; The circuit mounting plate (500) is provided with a mounting hole (501) for the outer cylinder (401) to pass through, and buckle holes (502) for the buckle rod (402) to pass through are provided on both sides of the mounting hole (501). The clamping tip (403) at the lower portion of the buckle rod (402) passes through the buckle hole (502) and pops outward to be clamped on the circuit mounting plate (500); A matching hole (601) for the outer cylinder (401) to pass through is correspondingly provided on the outer cover shell (600), matching side holes (602) for the latch rod (402) to pass through are provided on both sides of the matching hole (601), and matching protrusions (603) protruding outward are provided on the inner wall of the matching side hole (602), and the clamping tip (403) on the upper part of the latch rod (402) is ejected and clamped on the matching protrusion (603); There is a certain gap between the closed ring opening (203) inside the channel sleeve (200) and the inner wall of the channel sleeve (200), and a guide member (207) is provided on the inner wall of the channel sleeve (200) to guide and cooperate with the pressing plate (304), and the guide member (207) guides the linear displacement of the pressure-lifting cylinder (301); a tower-shaped sealing ring (302) is also provided between the pressure-lifting cylinder (301) and the channel sleeve (200), the top of the tower-shaped sealing ring (302) is fixed to the top of the channel sleeve (200), and the bottom of the tower-shaped sealing ring (302) is locked to the outside of the bottom of the pressure-lifting cylinder (301) through a fastening ring (303).

2. A simple motor valve for gas pipeline according to claim 1, characterized in that: A detection sensor (105) is further provided on the valve body (100) behind the channel sleeve (200). The detection sensor (105) is directly connected to the gas channel (104), and an installation cavity (206) for installing the detection sensor (105) is correspondingly provided on the upper fixing plate (205) at the top of the channel sleeve (200).

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