Double tube type lengthened stem gate valve

Abstract

The embodiment of the utility model relates to a double -tube type lengthening rod gate valve is provided with valve body below double -tube type lengthening rod gate valve, is provided with valve seat on valve body, is provided with gate inside valve body, is provided with valve cover above valve body, is provided with valve stem on double -tube type lengthening rod gate valve, valve stem is connected with gate, is provided with valve stem sealing structure on valve stem, is provided with double -tube type lengthening rod structure above valve stem, double -tube type lengthening rod structure is driven by hand wheel, drives valve stem and gate to move up and down, realizes the opening and closing of valve, solves in prior art, in some special working condition environment, the conventional gate valve often is difficult to satisfy safe, convenient operation demand, the operator is difficult to directly approach valve and carries out manual operation, the structural design of traditional gate valve can not provide enough support and stability, under the condition of long -distance transportation or complex pipeline layout, the installation and debugging of valve also face the technical problem that installation space is limited, pipeline stress influence.

Description

Technical Field

[0001] The embodiments of this utility model relate to a valve, and more particularly to a double-tube extended stem gate valve. Background Technology

[0002] In the field of industrial fluid control, gate valves, as a commonly used shut-off valve, are widely used in many industries such as petroleum, chemical, power, and water treatment to connect or disconnect the flow of media in pipelines.

[0003] In certain special operating environments, such as deeply buried pipeline systems or situations involving hazardous media such as radioactive or high-temperature and high-pressure media, the operating mechanisms of conventional gate valves often fail to meet the requirements for safe and convenient operation. Operators cannot directly approach the valves for manual operation, which not only increases the difficulty and danger of operation but may also affect the timely control and maintenance of the system. For systems with high requirements for valve control precision and stability, the structural design of traditional gate valves may not provide sufficient support and stability. In cases of long-distance transportation or complex pipeline layouts, valve installation and commissioning also face challenges such as limited installation space and the influence of pipeline stress. Utility Model Content

[0004] The purpose of this invention is to provide a double-tube extended stem gate valve that enhances the stability of the overall valve structure and makes operation safer and more convenient.

[0005] To achieve the above objectives, the present invention provides a double-tube extended stem gate valve, comprising:

[0006] The valve body is disposed below the double-tube extended stem gate valve;

[0007] Valve seat, wherein the valve seat is provided on the valve body;

[0008] A gate, wherein the gate is disposed inside the valve body;

[0009] A valve cover is provided above the valve body;

[0010] The valve stem is provided on the double-tube extended stem gate valve; the valve stem is connected to the gate plate;

[0011] A valve stem sealing structure is provided on the valve stem;

[0012] The double-tube extended rod structure is installed above the valve stem. The double-tube extended rod structure is driven by a handwheel, which moves the valve stem and the gate plate up and down to open and close the valve. The double-tube extended rod structure makes operation safer.

[0013] Furthermore, in the double-tube extended stem gate valve of this utility model, the double-tube extended stem structure includes:

[0014] An extension rod assembly is provided above the valve stem;

[0015] A dual-tube assembly is disposed above the extension rod assembly.

[0016] Furthermore, in the double-tube extended stem gate valve of this utility model, the extended stem assembly includes:

[0017] An extension rod is fixedly connected above the valve stem;

[0018] Valve stem nut, a valve stem nut is provided on the extended rod;

[0019] An oil cup is provided below the valve stem nut;

[0020] A first connecting plate is disposed above the oil cup;

[0021] The second connecting plate is disposed above the first connecting plate; the first connecting plate and the second connecting plate are fixedly connected by a double-ended stud and a lock nut.

[0022] Furthermore, in the double-tube extended stem gate valve of this utility model, the double-tube assembly includes:

[0023] An external connecting pipe is provided above the second connecting plate;

[0024] An inner connecting pipe is provided above the second connecting plate.

[0025] Furthermore, in the double-tube extended stem gate valve of this utility model, the valve stem sealing structure includes:

[0026] An upper sealing seat is provided around the valve stem;

[0027] The packing material is disposed above the upper sealing seat;

[0028] A packing sleeve is provided above the packing.

[0029] A packing pressure plate is provided above the packing sleeve; the packing pressure plate is fixedly connected to the valve cover by hinge bolts, nuts, and pins.

[0030] Furthermore, in the double-tube extended stem gate valve of this utility model, a pipe is provided in the valve body.

[0031] Furthermore, in the double-tube extended stem gate valve of this utility model, a gasket is provided between the valve body and the valve cover.

[0032] Furthermore, in the double-tube extended rod gate valve of this utility model, the valve body and the valve cover are fixedly connected by double-ended studs and nuts.

[0033] Furthermore, in the double-tube extended rod gate valve of this utility model, a handwheel is provided above the extended rod; the handwheel and the extended rod are fixedly connected by a double-ended stud.

[0034] Furthermore, in the double-tube extended stem gate valve of this utility model, a nameplate is provided on the valve body.

[0035] Compared with the prior art, the embodiment of this utility model adopts the following method: a valve body is set below the double-tube extended stem gate valve; a valve seat is set on the valve body; a gate plate is set inside the valve body; a valve cover is set above the valve body; a valve stem is set on the double-tube extended stem gate valve; the valve stem is connected to the gate plate; a valve stem sealing structure is set on the valve stem; and a double-tube extended stem structure is set above the valve stem. The double-tube extended stem structure is driven by a handwheel, which moves the valve stem and the gate plate up and down to realize the opening and closing of the valve. The double-tube extended stem structure makes the operation safer and solves the problem in some special working environments, such as deep burial, where the prior art is inadequate. In pipeline systems and applications involving radioactive or high-temperature and high-pressure hazardous media, the operating mechanisms of conventional gate valves often fail to meet the requirements for safe and convenient operation. Operators cannot directly approach the valves for manual operation, which not only increases the difficulty and danger of operation but may also affect the timely control and maintenance of the system. For some systems with high requirements for valve control precision and stability, the structural design of traditional gate valves may not provide sufficient support and stability. In the case of long-distance transportation or complex pipeline layouts, the installation and commissioning of valves also face technical challenges such as limited installation space and the influence of pipeline stress. Attached Figure Description

[0036] Figure 1 This is the front view of the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0038] The embodiments of this utility model relate to a double-tube extended stem gate valve, such as... Figure 1 As shown, it includes:

[0039] In this embodiment, a valve body 1 is provided below the double-tube extended stem gate valve. The valve body 1 serves as the main body of this embodiment and is used to accommodate and guide the flow of the medium.

[0040] A valve seat 2 is provided on the valve body 1. The valve seat 2 and the gate 3 cooperate to form a sealing surface to ensure that the flow of the medium can be effectively cut off when the valve is closed.

[0041] A gate 3 is installed inside the valve body 1. The valve is opened and closed by moving the gate 3 up and down. The sealing performance between the gate 3 and the valve seat 2 directly affects the sealing effect of the valve.

[0042] A valve cover 6 is installed above the valve body 1. The valve cover 6 can prevent external dust and moisture from entering the valve body 1, avoiding these impurities from causing wear and corrosion to internal moving parts such as the valve stem 4 and the gate 3, thus extending the service life of the valve. The valve stem 4 passes through the valve cover 6, and the valve cover 6 provides support for the valve stem 4, enabling the valve stem 4 to move stably up and down inside the valve, thereby accurately controlling the opening and closing of the gate 3.

[0043] The double-tube extended stem gate valve is equipped with a valve stem 4, which is connected to the gate 3 and the extended stem 27. This converts the rotational motion of the handwheel 19 into the linear motion of the gate 3, thus transmitting power.

[0044] A valve stem sealing structure 29 is provided on the valve stem 4. The valve stem sealing structure 29 is used to seal the gap between the valve stem 4 and the valve cover 6 to prevent media leakage.

[0045] A double-tube extended rod structure 30 is provided above the valve stem 4. The double-tube extended rod structure 30 is driven by the handwheel 19, which drives the valve stem 4 and the gate 3 to move up and down, thereby opening and closing the valve. The double-tube extended rod structure 30 enhances the stability of the overall valve structure, making operation safer and more convenient.

[0046] In this embodiment, a double-tube extended rod structure 30 is provided above the valve stem 4. The double-tube extended rod structure 30 is driven by the handwheel 19, which moves the valve stem 4 and the gate 3 up and down to open and close the valve. The double-tube extended rod structure 30 makes operation safer, and the double-tube structure enhances the overall strength and stability of the valve, effectively resisting various stresses and vibrations in the pipeline system. The design of the extended rod 27 allows the valve to be operated far from dangerous areas or in locations where operation is inconvenient, greatly improving the safety and convenience of operation. This solves the problem that in some special working environments, such as deeply buried pipeline systems or situations with radioactive or high-temperature and high-pressure hazardous media, the operating mechanism of conventional gate valves often cannot meet the requirements for safe and convenient operation. Operators cannot directly approach the valve for manual operation, which not only increases the difficulty and danger of operation, but may also affect the timely control and maintenance of the system. For some systems with high requirements for valve control accuracy and stability, the structural design of traditional gate valves may not provide sufficient support and stability. In the case of long-distance transportation or complex pipeline layout, the installation and commissioning of valves also face technical problems such as limited installation space and pipeline stress.

[0047] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the double-tube extended rod structure 30 includes:

[0048] An extension rod assembly 28 is provided above the valve stem 4. The extension rod assembly 28 allows the valve to be operated from a greater distance, avoiding direct contact between the operator and hazardous media or hazardous environments such as high temperature and high pressure, thus improving the safety and convenience of operation.

[0049] A double-tube assembly 29 is provided above the extended rod assembly 28. The double-tube assembly 29 enhances the overall strength and stability of the valve and can better withstand various stresses and vibrations in the pipeline system.

[0050] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the extension rod assembly 28 includes:

[0051] An extension rod 27 is fixedly connected above the valve stem 4. The extension rod 27 allows the valve to be operated from a greater distance, avoiding direct contact between the operator and hazardous media or dangerous environments such as high temperature and high pressure, thus improving the safety and convenience of operation.

[0052] A valve stem nut 14 is installed on the extension rod 27. The valve stem nut 14 and the extension rod 27 are threaded together. When the operator turns the handwheel 19, the extension rod 27 rotates, and the valve stem nut 14 rotates together with the extension rod 27. The valve stem 4 then moves linearly along the axial direction to open and close the valve. The extension rod 27 also provides an installation position and support for the valve stem nut 14, so that the valve stem nut 14 is firmly installed on the extension rod 27, reducing transmission errors caused by loosening or displacement, and making the valve operation more precise.

[0053] An oil cup 13 is provided below the valve stem nut 14. The oil cup 13 is a component for storing and replenishing lubricating oil. When the valve is operated, friction and wear will occur at the threaded engagement between the valve stem nut 14 and the extension rod 27. The lubricating oil in the oil cup 13 can lubricate the threaded engagement between the valve stem nut 14 and the extension rod 27, reduce wear, prevent rust and corrosion, and extend the service life of the components.

[0054] A first connecting plate 15 is provided above the oil cup 13;

[0055] A second connecting plate 16 is provided above the first connecting plate 15; the first connecting plate 15 and the second connecting plate 16 are fixedly connected by a double-ended stud 21 and a locking nut 22, forming a stable support structure that can distribute the force, enhance the structural strength, and ensure the normal operation of the valve.

[0056] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the dual-tube assembly 29 includes:

[0057] An external pipe 17 is installed above the second connecting plate 16. The external pipe 17 provides support and positioning for the internal structure, enhances the overall structural stability of the valve, and ensures the accurate relative position of each component.

[0058] An inner tube 18 is provided above the second connecting plate 16. The inner tube 18 can protect the internal extension rod 27 and prevent external factors from interfering with and damaging it.

[0059] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the valve stem sealing structure 31 includes:

[0060] An upper sealing seat 9 is provided around the valve stem 4. The upper sealing seat 9 is used to seal the gap between the valve stem 4 and the valve cover 6 to prevent media leakage.

[0061] Packing 10 is installed above the upper sealing seat 9. Packing 10 is used to seal the gap between valve stem 4 and valve cover 6 to prevent medium leakage.

[0062] A packing sleeve 11 is installed above the packing 10. Under the pressure of the packing plate 12, the packing sleeve 11 applies pressure evenly to the packing 10, compacts the packing 10 to ensure a seal and prevent media leakage.

[0063] A packing pressure plate 12 is provided above the packing sleeve 11; the packing pressure plate 12 and the valve cover 6 are fixedly connected by a hinge bolt 23, a nut 24 and a pin 25, which enhances the structural stability between the packing pressure plate 12, the packing sleeve 11 and the valve cover 6.

[0064] To achieve the above-mentioned technical effects, such as Figure 1 As shown, a pipe 32 is provided inside the valve body 1, and the pipe 32 is used for the flow of the medium.

[0065] To achieve the above-mentioned technical effects, such as Figure 1 As shown, a gasket 5 is provided between the valve body 1 and the valve cover 6, and the gasket 5 seals the space between the valve body 1 and the valve cover 6.

[0066] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the valve body 1 and the valve cover 6 are fixedly connected by a double-ended stud 7 and a nut 8.

[0067] To achieve the above-mentioned technical effects, such as Figure 1 As shown, a handwheel 19 is installed above the extension rod 27. The handwheel 19 is fixedly connected to the extension rod 27 by a double-ended stud 20. The handwheel 19 is the driving device. When the operator rotates the handwheel 19, the handwheel 19 drives the extension rod 27 to rotate through the double-ended stud 20. The valve stem 4 is connected to the extension rod 27. The rotation of the extension rod 27 will drive the valve stem 4 to rotate. The rotation of the valve stem 4 is converted into the linear motion of the gate 3. When the gate 3 is raised, the valve opens, and the medium flows in the pipeline 32. When the gate 3 moves downward and fits tightly against the valve seat 2, the valve closes, cutting off the flow of the medium.

[0068] To achieve the above-mentioned technical effects, such as Figure 1 As shown, a nameplate 26 is provided on the valve body 1.

[0069] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A double-tube extended stem gate valve, characterized in that, include: The valve body is disposed below the double-tube extended stem gate valve; Valve seat, wherein the valve seat is provided on the valve body; A gate, wherein the gate is disposed inside the valve body; A valve cover is provided above the valve body; The valve stem is provided on the double-tube extended stem gate valve; the valve stem is connected to the gate plate; A valve stem sealing structure is provided on the valve stem; The double-tube extended rod structure is installed above the valve stem. The double-tube extended rod structure is driven by a handwheel, which moves the valve stem and the gate plate up and down to open and close the valve. The double-tube extended rod structure makes operation safer.

2. The double-tube extended stem gate valve according to claim 1, characterized in that, The double-tube extended rod structure includes: An extension rod assembly is provided above the valve stem; A dual-tube assembly is disposed above the extension rod assembly.

3. The double-tube extended stem gate valve according to claim 2, characterized in that, The extension rod assembly includes: An extension rod is fixedly connected above the valve stem; Valve stem nut, a valve stem nut is provided on the extended rod; An oil cup is provided below the valve stem nut; A first connecting plate is disposed above the oil cup; The second connecting plate is disposed above the first connecting plate; the first connecting plate and the second connecting plate are fixedly connected by a double-ended stud and a lock nut.

4. The double-tube extended stem gate valve according to claim 2, characterized in that, The dual-tube assembly includes: An outer connecting pipe is provided above the second connecting disc of the extension rod assembly; An inner connecting pipe is provided above the second connecting plate.

5. The double-tube extended stem gate valve according to claim 1, characterized in that, The valve stem sealing structure includes: An upper sealing seat is provided around the valve stem; The packing material is disposed above the upper sealing seat; A packing sleeve is provided above the packing. A packing pressure plate is provided above the packing sleeve; the packing pressure plate is fixedly connected to the valve cover by hinge bolts, nuts, and pins.

6. The double-tube extended stem gate valve according to claim 1, characterized in that, A pipe is installed inside the valve body.

7. The double-tube extended stem gate valve according to claim 1, characterized in that, A gasket is provided between the valve body and the valve cover.

8. The double-tube extended stem gate valve according to claim 1, characterized in that, The valve body and the valve cover are fixedly connected by double-ended studs and nuts.

9. The double-tube extended stem gate valve according to claim 3, characterized in that, A handwheel is provided above the extension rod; the handwheel is fixedly connected to the extension rod by a double-ended stud.

10. The double-tube extended stem gate valve according to claim 1, characterized in that, A nameplate is affixed to the valve body.

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