A locking card for valve stem

Abstract

The invention discloses a locking card for a valve stem, comprising a metal strip, the metal strip is sleeved outside the valve body, a mounting sleeve fixed on the top of the inner side wall of the metal strip is sleeved on the upper end of the valve stem, one end of the metal strip and a strip body closely connected to the end are fixed to one side of the valve body, a locking sleeve is fixed to the outer side wall of the strip body, a plug is fixed in the upper opening of the locking sleeve, a strip-shaped opening is provided at the lower end of the locking sleeve, an axially vertical bolt is rotatably installed in the locking sleeve, the upper end of the bolt passes through the screw seat upward and is connected with a screw head, the lower end of the bolt passes through the screw seat downward and extends to a position close to the lower end of the locking sleeve, a strip body closely connected to the other end of the metal strip is provided with a plurality of tooth openings, the other end of the metal strip passes through the strip opening into the locking sleeve, and the bolt itself in the locking sleeve is threadedly engaged with the tooth opening of the strip body closely connected to the other end of the metal strip. The invention can prevent non-professionals from operating the valve stem, and has the advantage of being easy to use.

Description

Technical Field

[0001] The invention relates to the field of valve components, in particular to a locking card for a valve stem. Background Art

[0002] At present, valves are generally installed in heating pipeline systems to control the on-off of the flowing medium in the pipeline. The upper end of the valve stem in the valve passes through the valve body upward, and a rotary handle is generally installed on the upper end of the valve stem. Valves in heating pipeline systems are required to be operated and controlled only by professionals, but the valves in the prior art do not have measures to restrict the rotation of the valve stem. Non-professionals can easily operate the valve stem of the valve by rotating the rotary handle, so they cannot meet the valve operation requirements in heating pipeline systems. Summary of the invention

[0003] The purpose of the present invention is to provide a locking card for a valve stem, so as to solve the problem that the prior art valves have no restrictive measures to limit the operation of the valve stem by non-professionals.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A locking card for a valve stem, characterized in that it comprises a metal strip, which is vertically annularly sleeved on the valve body of the valve, an installation sleeve is fixed on the inner side wall of the metal strip facing the valve body corresponding to the valve stem position of the valve, the installation sleeve is sleeved on the upper end of the valve stem, one end of the metal strip and a section of the strip body closely connected to the end are fixed to one side of the valve body through its own inner side wall, an axially vertical locking sleeve is fixed on the outer side wall of the strip body, the upper end of the locking sleeve is open and the lower end is closed, wherein a plug is fixedly inserted into the opening of the upper end of the locking sleeve, a strip opening is vertically penetrated through the lower end of the locking sleeve at a position close to the side wall of one side of the locking sleeve at the lower end of the locking sleeve, and the inner side wall of the locking sleeve is fixed with a plug. A screw seat is fixed near the upper end, and an axially vertical bolt is rotatably installed in the screw seat, and the bolt is limited to being able to rotate only in the screw seat, the upper end of the bolt passes through the screw seat upward and is connected to a screw head, and a groove for the end of a screwdriver to be inserted into the top of the screw head is provided, and the lower end of the bolt passes through the screw seat downward and extends to a position close to the lower end of the locking sleeve, and a section of the strip body closely connected to the other end of the metal strip is provided with a plurality of tooth openings, and the plurality of tooth openings are arranged in sequence along the extension direction of the strip body, and the other end of the metal strip passes through the locking sleeve from the strip opening at the lower end of the locking sleeve, and the bolt itself in the locking sleeve is threadedly engaged with the tooth opening of the strip body closely connected to the other end of the metal strip.

[0006] The locking card for a valve stem is characterized in that the groove at the top of the screw head is a groove of a non-standard shape.

[0007] The locking card for a valve stem is characterized in that the screw seat is also connected to an axially vertical arc sleeve, and the arc sleeve covers the outside of the bolt.

[0008] The locking card for a valve stem is characterized in that the spacing between adjacent threads on the bolt is equal to the spacing between adjacent tooth openings on the strip body.

[0009] The locking card for a valve stem is characterized in that the tooth opening is a strip-shaped through hole penetrating the strip body, or is a tooth groove arranged on the inner side wall surface of the strip body facing the valve body.

[0010] The locking card for a valve stem is characterized in that the length of the strip opening at the lower end of the locking sleeve is greater than or equal to the width of the metal strip body, and the width of the strip opening is greater than or equal to the thickness of the metal strip body.

[0011] The locking card for a valve stem is characterized in that: the bolt is formed with an expanded diameter section in the screw seat, and a through hole for rotating the mounting bolt is provided in the screw seat. The through hole is also formed into a matching expanded diameter portion at the position corresponding to the expanded diameter section of the bolt. The expanded diameter section of the bolt is located in the expanded diameter portion of the through hole, thereby limiting the bolt to be able to rotate only inside the screw seat.

[0012] In the present invention, the metal strip is sleeved outside the valve body, and the inner wall of the metal strip is fixedly mounted on the upper end of the valve stem after the rotary handle is removed, so that the upper end of the valve stem is hidden in the mounting sleeve, and the strip body where the locking sleeve is located in the metal strip is fixed to one side of the valve body, and the strip body with teeth of the metal strip is inserted into the locking sleeve, and the thread of the bolt in the locking sleeve is engaged with the teeth of the strip body, so that the strip body where the teeth are located can be fixed in the locking sleeve. In this way, the valve stem of the valve can be hidden and locked to prevent other non-professionals from operating.

[0013] When the valve stem needs to be operated, the connection between the upper opening of the locking sleeve and the plug is destroyed to pull out the plug. Then, the screw head is turned by a screwdriver to rotate the bolt in one direction. The thread of the bolt can be used to push the rack where the tooth mouth is located downward out of the locking sleeve. Then, the mounting sleeve connected to the metal strip is removed from the upper end of the valve stem. The valve stem can then be operated to rotate.

[0014] When re-locking is required, re-install the installation sleeve onto the upper end of the valve stem, insert the bar where the teeth are located into the locking sleeve, then turn the bolt in the other direction, use the thread of the bolt to push the rack where the teeth are located upward into the locking sleeve, and then re-seal and fix the blockage to complete the locking of the locking rod.

[0015] Compared with the prior art, the present invention can lock the locking rod of the valve when not needed, so that the upper end of the locking rod of the valve is hidden and cannot be operated, and the valve stem can be easily exposed again when needed, thereby preventing non-professionals from operating the valve stem, and has the advantage of being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention when locked.

[0017] Figure 2 It is a schematic diagram of the structure of the present invention when it is not locked.

[0018] Figure 3 It is a front view of the internal structure of the locking sleeve of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, a locking card for a valve stem includes a metal strip 1, which is vertically annularly sleeved outside the valve body 2 of the valve, and a mounting sleeve 4 is fixed on the upper part of the inner side wall of the metal strip 1 facing the valve body 2, corresponding to the position of the valve stem 3 of the valve, and the mounting sleeve 4 is sleeved on the upper end of the valve stem 3 and almost completely covers the upper end of the valve stem 3. One end of the metal strip 1 goes around the valve body 2 upward and then extends downward to the right side of the valve body 2. A section of the metal strip 1 that is closely connected to the end is fixed to the right side of the valve body 2 through its inner side wall, and an axially vertical locking sleeve 5 is fixed to the outer side wall of the metal strip, and the rest of the metal strip 1 is not connected to the valve body 2. The locking sleeve 5 has an open upper end and a closed lower end, wherein a plug 6 is fixedly inserted into the upper opening of the locking sleeve 5, and the plug 6 is fixed to the upper end of the locking sleeve 5 by adhesive bonding, and the plug 6 can be conveniently removed by directly scraping off the adhesive when needed.

[0021] A strip opening 7 vertically passing through the lower end of the locking sleeve 5 is provided at the lower end of the locking sleeve 5 close to the left side wall of the locking sleeve. The length of the strip opening 7 is greater than or equal to the width of the metal strip 1, and the width of the strip opening 7 is greater than or equal to the thickness of the metal strip 1.

[0022] A screw seat 8 is fixed near the upper end of the locking sleeve 5, and an axially vertical bolt 9 is rotatably installed in the screw seat 8. The part of the bolt 9 located inside the screw seat 8 is formed with an expanded diameter section 10, and a through hole for rotatably installing the bolt 9 is provided in the screw seat 8. The through hole corresponds to the position of the expanded diameter section 10 of the bolt 9 and is also formed into a matching expanded diameter portion. The expanded diameter section of the bolt 9 is located in the expanded diameter portion of the through hole, thereby limiting the bolt 9 to be able to rotate only inside the screw seat 8.

[0023] The upper end of the bolt 9 passes through the screw seat 8 upward and is connected to the screw head 11. The top of the screw head 11 is provided with a groove for the end of the screwdriver to be inserted. The groove at the top of the screw head is a non-standard shape. Traditional screwdrivers are standard parts such as cross screwdrivers and flat screwdrivers. In the present invention, the groove at the top of the screw head is designed to be a non-standard shape, such as a rectangle, an I-shaped, etc., that is, other shapes different from standard screwdrivers. In this way, professionals can hold a screwdriver with a special corresponding shape to turn the bolt 9. The lower end of the bolt 9 passes through the screw seat 8 downward and extends to a position close to the lower end of the locking sleeve 5.

[0024] The other end of the metal strip 1 goes around the bottom of the valve body 2 downward and then extends upward to the locking sleeve 5. A section of the strip body that is closely connected to the other end of the metal strip 1 is provided with a plurality of tooth openings 12, which are arranged in sequence along the extension direction of the strip body. The tooth openings 12 are bar-shaped through holes that penetrate the strip body, or tooth grooves that are arranged on the inner wall surface of the strip body facing the valve body. The other end of the metal strip 1 passes through the strip opening 7 at the lower end of the locking sleeve 5 into the locking sleeve 5. The thread 13 of the bolt 9 in the locking sleeve 5 is engaged with the tooth opening 12 of the strip body that is closely connected to the other end of the metal strip 1. The spacing between adjacent threads 13 on the bolt 9 is equal to the spacing between adjacent tooth openings 12 of the strip body. By rotating the bolt 9, the strip body where the tooth opening 12 is located can be pushed out or pushed into the locking sleeve 5. The screw seat 8 is also connected to an axially vertical arc sleeve 14, which covers the outside of the bolt 9.

[0025] The embodiments described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have all been recorded in the claims.

Claims

1. A locking card for a valve stem, characterized in that: The invention comprises a metal strip, which is vertically annularly sleeved on the valve body of the valve, and an installation sleeve is fixed on the inner side wall of the metal strip facing the valve body corresponding to the valve stem position of the valve, and the installation sleeve is sleeved on the upper end of the valve stem, and one end of the metal strip and a section of the strip body closely connected to the end are fixed to one side of the valve body through the inner side wall thereof, and an axially vertical locking sleeve is fixed on the outer side wall of the strip body, and the upper end of the locking sleeve is open and the lower end is closed, wherein a plug is fixedly inserted into the opening of the upper end of the locking sleeve, and a strip opening is vertically penetrated through the lower end of the locking sleeve at a position close to the side wall of one side of the locking sleeve at the lower end of the locking sleeve, and a fixing is made in the locking sleeve near the upper end. A screw seat is provided, in which an axially vertical bolt is rotatably installed, and the bolt is limited to being able to rotate only in the screw seat, the upper end of the bolt passes through the screw seat upward and is connected with a screw head, and a groove for the end of a screwdriver to be inserted is provided on the top of the screw head, and the lower end of the bolt passes through the screw seat downward and extends to a position close to the lower end of the locking sleeve, and a section of the strip body closely connected to the other end of the metal strip is provided with a plurality of tooth openings, and the plurality of tooth openings are arranged in sequence along the extending direction of the strip body, and the other end of the metal strip passes through the strip opening at the lower end of the locking sleeve into the locking sleeve, and the bolt itself in the locking sleeve is threadedly engaged with the tooth opening of the strip body closely connected to the other end of the metal strip; The groove on the top of the screw head is a groove of a non-standard shape; The screw seat is also connected with an axially vertical arc sleeve, which covers the outside of the bolt.

2. A locking card for a valve stem according to claim 1, characterized in that: The distance between adjacent threads on the bolt is equal to the distance between adjacent teeth of the strip body.

3. A locking card for a valve stem according to claim 1, characterized in that: The tooth opening is a strip-shaped through hole penetrating the strip body, or a tooth groove arranged on the inner side wall surface of the strip body facing the valve body.

4. A locking card for a valve stem according to claim 1, characterized in that: The length of the strip opening at the lower end of the locking sleeve is greater than or equal to the width of the metal strip body, and the width of the strip opening is greater than or equal to the thickness of the metal strip body.

5. A locking card for a valve stem according to claim 1, characterized in that: The bolt is formed with an expanded diameter section in the screw seat, and a through hole for rotating the mounting bolt is provided in the screw seat. The through hole is also formed into a matching expanded diameter portion corresponding to the expanded diameter section of the bolt. The expanded diameter section of the bolt is located in the expanded diameter portion of the through hole, thereby limiting the bolt to be able to rotate only inside the screw seat.

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