Gate valve with flexible sheath

Abstract

The utility model provides a gate valve with a flexible sheath, which comprises a valve body, a valve rod arranged on the valve body, and a rotating hand wheel arranged on the valve body and connected with the valve rod, the protection column is vertically arranged on the upper end face of the rotating hand wheel and located on the peripheral side of the valve rod; the clearance opening hole is formed in the protection column and used for allowing the valve rod to be in clearance fit with the protection column; the abutting block is arranged on the protection column in a lifting mode and located in the clearance opening hole; the compression spring is arranged between the upper end of the abutting block and the protection column and located in the gap open hole, and the prompting device is arranged between the upper end of the abutting block and the protection column and used for ascending and descending along with a valve rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a gate valve with flexible sheath. BACKGROUND

[0002] The gate valve is a gate board, and the movement direction of the gate board is perpendicular to the fluid direction. The gate valve can only be fully opened and closed, and cannot be adjusted and throttled. The gate valve is sealed by the contact between the valve seat and the gate board, and a metal material is usually built up on the sealing surface to increase the wear resistance.

[0003] The rising stem gate valve is mainly used in industrial pipeline systems and is suitable for most scenes. The valve stem nut is lifted when the valve is opened and closed, so the movement of the valve stem can be seen. The advantage is that the medium does not contact the valve stem thread, which makes it perform well in environments that need to be frequently operated. The rising stem gate valve is suitable for large-diameter or situations where the installation space is limited. Since the valve stem only rotates when the valve is opened and closed and does not lift, it is usually used in environments that are not frequently opened and closed and have limited installation space. The medium of the rising stem gate valve will contact the valve stem thread, which is suitable for use in situations that require less maintenance.

[0004] In order to facilitate the observation of the opening and closing state of the valve, the traditional rising stem gate valve needs to expose the valve stem externally. However, the exposed screw rod cannot be protected, so that the long-term exposed valve stem is easily affected by external media and corroded or rusted, which can easily cause damage to the thread surface of the valve stem and affect the normal use of the valve stem. UTILITY MODEL CONTENTS

[0005] The utility model discloses a gate valve with a flexible sheath.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gate valve with a flexible sheath, comprising a valve body, a valve stem arranged on the valve body, a rotating hand wheel arranged on the valve body and connected with the valve stem, a protection column arranged vertically on the upper end surface of the rotating hand wheel and located on the side of the valve stem, a gap opening arranged on the protection column for gap cooperation between the valve stem and the protection column, an abutting block arranged on the protection column and located in the gap opening, a compression spring arranged between the upper end of the abutting block and the protection column and located in the gap opening, and a prompt device arranged between the upper end of the abutting block and the protection column for following the lifting of the valve stem.

[0007] Further improvement: the prompt device comprises a sliding opening arranged on the upper end surface of the protection column and communicating with the gap opening, and a lifting rod arranged on the upper end surface of the abutting block and gap cooperating with the sliding opening. The upper end of the lifting rod passes through the sliding opening and is located above the protection column.

[0008] Further improvement is that the sealing piece is arranged between the lifting rod and the protection column to improve the sealing between the lifting rod and the sliding opening.

[0009] Further improvement is that the sealing frame is arranged on the valve body outside the valve rod and below the rotating handle, and the auxiliary sealing sleeve is arranged in the sealing frame on the valve body.

[0010] Further improvement is that the auxiliary sealing sleeve is a flexible sealing sleeve.

[0011] Further improvement is that the upper and lower ends of the auxiliary sealing sleeve are fixed to the upper and lower ends of the sealing frame respectively.

[0012] Further improvement is that the flexible sealing sleeve is a polyester sleeve, a polyimide sleeve, a rubber sleeve or a silica gel sleeve.

[0013] Further improvement is that the sealing piece comprises a longitudinal ring hole which is longitudinally arranged on the lifting rod and circumferentially opened, a placing ring groove which is annularly opened on the protection column and communicated with the sliding opening, and an elastic sealing ring which is arranged on the protection column and located in the placing ring groove, one side of the elastic sealing ring being located in the placing ring groove and the other side being located in the longitudinal ring hole.

[0014] Further improvement is that the rotating handle comprises an inner ring and an outer ring, the inner ring and the outer ring are connected through a connecting column, the lower end of the protection column is provided with a plurality of clamping blocks, each clamping block is a reverse L-shaped block, the end face of each clamping block close to the inner ring is a circular arc surface, the circular arc surface of the inner ring of each clamping block is matched with the outer side of the inner ring of the rotating handle, and a bolt is arranged between the side end face of each clamping block and the inner ring of the rotating handle.

[0015] Further improvement is that the bolt is an internal hexagonal bolt.

[0016] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: in the process of controlling the rotation of the valve rod through the rotating handle, the valve rod will be lifted on the valve body, the opening and closing state of the valve can be judged through the exposed valve rod above the rotating handle in the traditional way, the valve rod can be protected through the protection sleeve at this time, so as to prevent the exposed valve rod from being corroded or rusted due to the influence of external medium, the threads of the valve rod are not easy to be damaged to affect the normal use of the valve rod, the abutting block is abutted on the upper end face of the valve rod through the compression spring, when the valve rod rises in the gap opening, the abutting block is lifted to make the compression spring gradually contract and produce elastic deformation, at this time, the abutting block drives the lifting rod to rise in the sliding opening and the gap opening, if the compression spring gradually releases the elastic potential energy to push the abutting block to descend when the valve rod descends, the abutting block drives the lifting rod to descend, the opening and closing state of the valve can be judged according to the exposed position of the lifting rod through the methods such as marking lines or smearing colors on the lifting rod.

[0017] Further effect: the flexible protective sleeve can seal and protect the valve stem exposed below the rotating handle, so as to prevent the part of the valve stem from being corroded or rusted by external medium.

[0018] Further effect: the placement ring hole is used to tightly fit the elastic sealing ring in the longitudinal ring hole during the lifting of the lifting rod, and the position of the elastic sealing ring is limited by the placement ring hole, so that the elastic sealing ring can be prevented from moving up and down with the lifting rod, and the protection effect on the valve stem can be further improved in rainy or humid weather.

[0019] Further effect: when it is needed to disassemble the protective column from the rotating handle, the bolt is disassembled from the clamping block and the rotating handle by a tool, and then the protective column can be pulled up and disassembled from the rotating handle. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is a front view cutaway view of the rotating handle and the protective column in the present application;

[0023] Figure 3 is an enlarged view of A part of Figure 2

[0024] Figure 4 is a top view cutaway view of the rotating handle and the clamping block in the present application.

[0025] Mark explanation: valve body 1, valve stem 2, rotating handle 3, protective column 4, gap opening 5, abutting block 6, compression spring 7, sliding opening 8, lifting rod 9, sealing frame 10, auxiliary sealing sleeve 11, longitudinal ring hole 12, placement ring groove 13, elastic sealing ring 14, clamping block 15, bolt 16. DETAILED DESCRIPTION

[0026] The present application will be further described in combination with the drawings and specific embodiments.

[0027] Referring to Figures 1 to 4 ​The technical scheme adopted in the embodiment is shown as follows: a gate valve with a flexible sheath, comprising a valve body 1, a valve rod 2 arranged on the valve body 1, a rotating hand wheel 3 arranged on the valve body 1 and connected with the valve rod 2, a protection column 4 arranged vertically on an upper end surface of the rotating hand wheel 3 and located at a side of the valve rod 2, a gap opening 5 opened on the protection column 4 and used for gap cooperation between the valve rod 2 and the protection column 4, an abutting block 6 arranged on the protection column 4 and located in the gap opening 5, a compression spring 7 arranged between an upper end of the abutting block 6 and the protection column 4 and located in the gap opening 5, and a prompt device arranged between the upper end of the abutting block 6 and the protection column 4 and used for following the lifting of the valve rod 2.

[0028] The prompt device comprises a sliding opening 8 opened on the upper end surface of the protection column 4 and communicated with the gap opening 5, and a lifting rod 9 arranged on an upper end surface of the abutting block 6 and gap cooperated with the sliding opening 8, wherein an upper end of the lifting rod 9 penetrates through the sliding opening 8 and is located above the protection column 4.

[0029] A sealing member is arranged between the lifting rod 9 and the protection column 4 and used for improving the sealing performance between the lifting rod 9 and the sliding opening 8.

[0030] A sealing frame 10 is arranged on the valve body 1 and located at an outer side of the valve rod 2, the sealing frame 10 is located below the rotating hand wheel 3, and an auxiliary sealing sleeve 11 is arranged on the valve body 1 and located in the sealing frame 10.

[0031] The auxiliary sealing sleeve 11 is a flexible sealing sleeve.

[0032] The upper and lower ends of the auxiliary sealing sleeve 11 are fixed to the upper and lower ends of the sealing frame 10, respectively. The flexible sealing sleeve is sleeved on a side of the valve rod 2 in a sheet-shaped flexible material and is rolled into a tubular shape, then the connected end rolled into the tubular shape is connected by means of adhesive or glue or hot melting, and the upper and lower ends are fixed to the upper and lower ends of the sealing frame 10 by means of adhesive or glue.

[0033] The flexible sealing sleeve is a polyester sleeve or a polyimide sleeve or a rubber sleeve or a silica gel sleeve. Polyester is a common flexible material, has good corrosion resistance, and is widely used in packaging, textile and other fields. Polyimide is also a high-performance flexible material, has excellent high-temperature resistance and corrosion resistance.

[0034] The sealing member comprises a longitudinal ring hole 12 opened in a circumferential direction on the lifting rod 9 and arranged in a longitudinal direction, a placement ring groove 13 opened in an annular shape on the protection column 4 and communicated with the sliding opening 8, and an elastic sealing ring 14 arranged on the protection column 4 and located in the placement ring groove 13, wherein one side of the elastic sealing ring 14 is located in the placement ring groove 13 and the other side is located in the longitudinal ring hole 12.

[0035] The rotating hand wheel 3 comprises an inner ring and an outer ring, and the inner ring and the outer ring are connected through a connecting column, the lower end of the protection column 4 is provided with a plurality of clamping blocks 15, each clamping block 15 is a reverse L-shaped block, the end face of each clamping block 15 close to the inner ring is a circular arc surface, the circular arc surface of the inner ring of each clamping block 15 is attached to the outer side of the inner ring of the rotating hand wheel 3, and the side end face of each clamping block 15 is provided with a bolt 16 between the inner ring of the rotating hand wheel 3.

[0036] The bolt 16 is a hexagonal bolt 16. It can also be a common bolt 16, but preferably a hexagonal bolt 16, which can facilitate the operation of a hexagonal wrench.

[0037] The working principle of the utility model is: in the process of controlling the rotation of the valve rod 2 by rotating the hand wheel 3, the valve rod 2 will be lifted on the valve body 1, and the traditional valve rod 2 exposed above the rotating hand wheel 3 is used to judge the opening and closing state of the valve. At this time, the valve rod 2 can be protected by the protective sleeve, thereby preventing the exposed valve rod 2 from being corroded or rusted by external media, and preventing the threads of the valve rod 2 from being damaged to affect the normal use of the valve rod 2. The compression spring 7 pushes the abutting block 6 to abut against the upper end face of the valve rod 2. When the valve rod 2 rises in the gap hole 5, the valve rod 2 pushes the abutting block 6 upward to make the compression spring 7 gradually contract and produce elastic deformation. At this time, the abutting block 6 drives the lifting rod 9 to rise in the sliding opening 8 and the gap hole 5. If the valve rod 2 is lowered, the compression spring 7 gradually releases the elastic potential energy to push the abutting block 6 downward, and the abutting block 6 drives the lifting rod 9 to descend. The lifting rod 9 can be marked or colored to judge the opening and closing state of the valve according to the exposed position of the lifting rod 9.

[0038] The utility model wants to protect the structure of the product, the model of each element is not the content protected by the utility model, and is also a known technology. As long as the elements on the market can realize the functions of the utility model, they can be selected and applied as a gate valve with a flexible sheath. Therefore, the model and other parameters of the elements are not described in detail in the utility model. The contribution of the utility model lies in the scientific combination of each element.

[0039] The basic principle and main features of the utility model and its advantages are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above examples. The above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements. These changes and improvements fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents. The utility model is not described in detail, which is the known technology of those skilled in the art.

Claims

1. A flexible-jacketed gate valve comprising a valve body, a valve stem disposed on the valve body, a rotating handwheel disposed on the valve body and connected to the valve stem, characterized in that: The protection column is vertically arranged on the upper end surface of the rotating handle and located on the side of the valve rod, a gap opening is arranged on the protection column and used for gap cooperation between the valve rod and the protection column, an abutting block is arranged on the protection column and located in the gap opening, a compression spring is arranged between the upper end of the abutting block and the protection column and located in the gap opening, and a prompt device is arranged between the upper end of the abutting block and the protection column and used for following the lifting of the valve rod.

2. A gate valve with a flexible boot according to claim 1, characterized in that: The prompt device comprises a sliding opening arranged on the upper end surface of the protection column and communicated with the gap opening, and a lifting rod arranged on the upper end surface of the abutting block and gap cooperated with the sliding opening, the upper end of the lifting rod passes through the sliding opening and is located above the protection column.

3. A gate valve with a flexible boot as defined in claim 2, wherein: A sealing member is arranged between the lifting rod and the protection column and used for improving the sealing performance between the lifting rod and the sliding opening.

4. A gate valve with a flexible boot as defined in claim 1, wherein: A sealing frame is arranged on the valve body and located on the outside of the valve rod, the sealing frame is located below the rotating handle, and an auxiliary sealing sleeve is arranged on the valve body and located in the sealing frame.

5. A gate valve with a flexible boot as defined in claim 4, wherein: The auxiliary sealing sleeve is a flexible sealing sleeve.

6. A gate valve with a flexible boot as defined in claim 4, wherein: The upper and lower ends of the auxiliary sealing sleeve are fixed to the upper and lower ends of the sealing frame, respectively.

7. A gate valve with a flexible boot as defined in claim 5, wherein: The flexible sealing sleeve is a polyester sleeve, a polyimide sleeve, a rubber sleeve or a silica gel sleeve.

8. A gate valve with a flexible boot as defined in claim 3, wherein: The sealing member comprises a longitudinal ring hole arranged on the lifting rod and longitudinally arranged, a ring-shaped placing ring groove arranged on the protection column and communicated with the sliding opening, and an elastic sealing ring arranged on the protection column and located in the placing ring groove, one side of the elastic sealing ring is located in the placing ring groove, and the other side is located in the longitudinal ring hole.

9. A gate valve with a flexible boot as defined in claim 1, wherein: The rotating handle comprises an inner ring and an outer ring, the inner ring and the outer ring are connected through a connecting column, the lower end of the protection column is provided with a plurality of clamping blocks, each clamping block is a reverse L-shaped block, the end surface of each clamping block close to the inner ring is a circular arc surface, the circular arc surface of the inner ring of each clamping block is matched with the outer side of the inner ring of the rotating handle, and a bolt is arranged between the side end surface of each clamping block and the inner ring of the rotating handle.

10. A gate valve with a flexible boot according to claim 9, characterized in that: The bolt is an inner hexagonal bolt.

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