CN213319928U - Valve rod assembly and disassembly tools - Google Patents
Valve rod assembly and disassembly tools Download PDFInfo
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- CN213319928U CN213319928U CN202021797731.0U CN202021797731U CN213319928U CN 213319928 U CN213319928 U CN 213319928U CN 202021797731 U CN202021797731 U CN 202021797731U CN 213319928 U CN213319928 U CN 213319928U
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Abstract
The utility model relates to a valve rod assembly and disassembly tools. The valve rod disassembling tool comprises a tool main body, wherein the tool main body comprises a sleeve part and a handle, and the sleeve part is sleeved on a valve rod of a throttle valve; the handle is used for a maintainer to carry out screwing operation so as to drive the tool main body to rotate; the extension direction of an inner hole of the sleeve part is taken as the vertical direction, and the sleeve part is provided with a lower end surface facing a lifting nut of the throttle valve when in use; at least two keys are arranged on the lower end face of the sleeve part and are used for being matched with a key groove of a lifting nut of the throttle valve so as to drive the lifting nut to rotate when the tool main body rotates, and further drive the valve rod to move up and down. The upper portion of choke valve need not be disassembled in the valve rod dismouting process, compares with prior art, has reduced the work load of valve rod dismouting, has reduced maintainer's intensity of labour.
Description
Technical Field
The utility model relates to a valve rod assembly and disassembly tools.
Background
The gas field gathering and transportation station usually adopts an electric throttle valve to throttle and reduce pressure of natural gas in a pipeline, the structure of the throttle valve is shown in figure 1, the throttle valve comprises a valve body and a valve rod 7 arranged in the valve body, and the directions of two arrows in the figure are respectively the gas inlet direction and the gas outlet direction. The valve body comprises an upper part 3 and a valve seat 4, and the upper part 3 and the valve seat 4 are connected and pressed through bolts. The valve seat 4 inner seat is equipped with cage 8, has distributed a plurality of holes on the wall of cage 8, and the upper end of upper portion 3 is connected with lifting nut 6 through the bearing, and the upper portion and the 6 threaded connection of lifting nut of valve rod 7, the lower extreme of valve rod 7 are nested in cage 8 as the case, along with the up-and-down motion of valve rod 7, and the airflow through hole on the cage 8 increases thereupon or reduces, realizes the throttle step-down function of choke valve. In addition, a sealing groove is arranged in the upper part 3 and used for accommodating a sealing assembly 10 sleeved on the valve rod 7, and a movable gap 9 is arranged at the bottom of the upper part 3. During normal use, the lifting nut 6 is driven to rotate by an electric head (not shown in the figure), and then the valve rod 7 is driven to move up and down. Specifically, two keyways are arranged along circumference on the upper end face of lifting nut 6, two keys are arranged on the electric head, the two keys of the electric head are respectively matched with the two keyways of lifting nut 6, and the electric head and lifting nut 6 are in rotation stopping fit through the keys and the keyways, so that lifting nut 6 is driven to rotate.
In the long-term operation process of the throttling valve, impurities in the natural gas and fixed simple substances separated out when the natural gas is throttled and depressurized can gradually enter the position of the valve rod 7 along the valve body and gradually accumulate along the valve rod 7, and the impurities are firstly accumulated at the movable gap 9 and then gradually accumulate upwards until the sealing assembly 10. When the deposit is more and thick, on the one hand, the resistance when can increasing valve rod 7 up-and-down motion is rubbed each other between deposit and the valve rod 7, leads to valve rod 7 up-and-down motion difficulty, and on the other hand, the deposit can occupy the space in activity space 9, leads to activity space 9 to reduce, influences the upper and lower activity stroke of valve rod 7. When the throttle valve is serious, the torque required by the up-and-down movement of the throttle valve can exceed the maximum output torque of the electric head, finally, the throttling and pressure reducing functions of the throttle valve fail to work, the throttle valve cannot be opened and closed, and the throttle valve needs to be disassembled and maintained at the moment.
At present, the throttle valve is disassembled and overhauled by disassembling the bolt 5, disassembling the upper part 3 of the throttle valve and the valve seat 4 and cleaning the valve core. And the operation discovery is overhauld many times, and impurity can upwards pile up along valve rod 7 outer wall, leads to valve rod 7 and bearing adhesion card dead, if only wash the lower part of valve rod 7 this moment, still can't guarantee the choke valve and resume normal work, must take valve rod 7 whole this moment out and wash. However, since the valve rod 7 is stuck to the bearing, the poppet nut 6 cannot be driven to rotate by the electric head, and the valve rod 7 cannot move up and down, the valve rod 7 cannot be directly pulled out from the lower portion, and the bolt 11 is continuously detached only after the upper portion 3 is separated from the valve seat 4, so that the upper portion 3 of the throttle valve is completely detached, and the valve rod 7 can be taken out later. After the valve rod 7 is cleaned and maintained, the upper part 3 and the sealing assembly 10 are gradually reinstalled, and finally the valve seat 4 is reinstalled and the bolt 5 and the bolt 11 are fastened, so that the overhauling workload of the throttling valve is increased, and the labor intensity of an overhauling worker is increased.
In addition, because the seal assembly 10 is corroded by media for a long time, the parts forming the seal assembly 10 are easily subjected to plastic deformation, specifically, expansion deformation, and after the upper part 3 is completely disassembled, the seal assembly 10 is easily expanded and popped out of the seal groove due to the loss of extrusion force. After the sealing assembly 10 is ejected out of the sealing groove, the sealing assembly 10 may be disassembled due to different deformation degrees of the components constituting the sealing assembly 10, so that the assembly relationship of the components constituting the sealing assembly 10 is damaged. When the sealing assembly 10 is installed back, on one hand, after the assembly relationship of the parts forming the sealing assembly 10 is damaged, the parts can not be assembled to form the sealing assembly 10 due to different deformation degrees of the parts, so that the sealing assembly 10 cannot be used; on the other hand, even if the seal assembly 10 is not disassembled, the seal assembly 10 cannot be installed back into the seal groove due to the expansion deformation of the parts, and at this time, only a new seal assembly 10 is replaced, which increases the production cost of the natural gas.
The utility model discloses a utility model patent that the grant bulletin number is CN201287308Y discloses a gas flow control valve rod and valve head assembly and disassembly tools, including valve rod assembly and disassembly tools main part and valve head assembly and disassembly tools main part, valve rod assembly and disassembly tools main part and valve head assembly and disassembly tools main part constitute by handle and U-shaped spanner, and the U-shaped opening interval of U-shaped spanner matches with the recess interval of valve rod and valve head respectively, and valve rod assembly and disassembly tools main part still is equipped with moment instrument main part interface at the connecting portion of handle and U-shaped spanner for cup joint moment instrument main part and twist the valve rod. However, this detaching tool cannot be used to detach the valve stem of the throttle valve in which the poppet nut drives the valve stem to move up and down, and therefore, it is necessary to design a valve stem detaching tool to detach the valve stem in which the poppet nut drives the valve stem to move up and down.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a valve rod assembly and disassembly tools to solve the valve rod dismouting work load of throttle valve among the prior art big, technical problem that maintainer intensity of labour is big.
In order to achieve the above object, the utility model discloses valve rod assembly and disassembly tools's technical scheme is:
the valve rod assembly and disassembly tools include:
a tool body, the tool body comprising: the sleeve part is sleeved on a valve rod of the throttle valve;
the handle is used for a maintainer to carry out screwing operation so as to drive the tool main body to rotate;
the extension direction of an inner hole of the sleeve part is taken as the vertical direction, and the sleeve part is provided with a lower end surface facing a lifting nut of the throttle valve when in use;
at least two keys are arranged on the lower end face of the sleeve part and are used for being matched with a key groove of a lifting nut of the throttle valve so as to drive the lifting nut to rotate when the tool main body rotates.
The utility model has the advantages that:
when the valve rod needs to be integrally cleaned, the sleeve part is sleeved on the valve rod from the upper part of the valve rod, the key is matched with the key groove of the lifting nut, the rotation stopping matching of the sleeve part and the lifting nut is realized, an overhaul worker twists the handle to drive the lifting nut to rotate, and then drives the valve rod to move downwards until the valve rod is separated from the lifting nut, at the moment, the valve rod can be pulled out from the upper part from the valve core side to be cleaned, and when the valve rod is cleaned and needs to be installed back to the upper part, the valve rod is inserted from the lower end of the upper part, the lifting nut is rotated, the valve rod is driven to move upwards until the movable gap is zero, compared with the prior art, the workload of valve rod disassembly and assembly is. In addition, the upper part of the throttle valve does not need to be disassembled in the valve rod taking-out process, so that after the valve rod is drawn out, the sealing assembly can still be left in the sealing groove in the upper part, and the technical problem that the sealing assembly cannot be assembled back due to popping is avoided.
As a preferred technical scheme, the valve rod disassembling tool further comprises a limiting nut, wherein a threaded hole is formed in the limiting nut and is used for being in threaded connection with a valve rod of the throttle valve;
the limiting nut is provided with a downward main body stopping surface, and when the key of the sleeve part is matched with the key groove of the lifting nut, the limiting nut is in threaded connection with the valve rod, so that the main body stopping surface is matched with the lifting nut of the throttle valve to limit the tool main body in the vertical direction.
Has the advantages that: through stop nut and lifting nut cooperation, can carry out the spacing of direction from top to bottom to the instrument main part, avoid key and keyway when revolving wrong instrument main part to break away from, influence taking out fast of valve rod, still can avoid key and keyway to break away from the back, instrument main part and valve rod collision and damage valve rod.
As a preferred technical scheme, the limiting nut comprises a section with a larger diameter and a section with a smaller diameter, the outer diameter of the section with the larger diameter is larger than that of the section with the smaller diameter, and the section with the larger diameter is arranged at the upper part of the section with the smaller diameter;
the section with the smaller diameter is used for being inserted into the inner hole of the sleeve part, and the lower end face of the section with the larger diameter forms the main body stop face.
Has the advantages that: the smaller section of diameter is inserted into the inner hole of the sleeve part, so that the connection stability of the limiting nut and the valve rod can be improved, and the tool main body can be more stably limited up and down.
Preferably, the height of the smaller diameter section is smaller than the height of the sleeve part in the vertical direction.
Has the advantages that: avoid limit nut to twist soon the back on the valve rod, the diameter is compressed tightly on lifting nut for the segment, and top is tight about messenger lifting nut and limit nut leads to the instrument main part to be difficult to be twisted and moves, influences taking out of valve rod.
As a preferable technical scheme, an inner hole of the sleeve part is a circular hole, and the section with the smaller diameter is cylindrical.
Has the advantages that: compared with the mode that the inner hole of the sleeve part is set to be the polygonal hole, even if the sleeve part is in contact with the section with the smaller diameter due to uneven circumferential stress when the tool body is screwed, the contact area between the sleeve part and the section with the smaller diameter can be reduced, the friction force between the sleeve part and the section with the smaller diameter is further reduced, and the lifting nut can be rotated normally.
Preferably, the handle extends in the front-rear direction, and the handle is disposed to be biased to the right side of the sleeve portion.
Has the advantages that: when carrying out the valve rod and taking out the operation, operating personnel can follow the left side of handle and twist the operation, has bigger operating space, makes things convenient for operating personnel to twist and twists the instrument main part.
As a preferable technical scheme, the right side of the handle is tangent to the sleeve part, and the left side of the handle is connected with the sleeve part through an arc transition surface.
Has the advantages that: the phenomenon of stress concentration at the joint of the handle and the sleeve part is avoided, and the connection reliability of the handle and the sleeve part is ensured.
Preferably, the handle is offset to the upper side of the sleeve portion.
Has the advantages that: when the handle is screwed, the interference between the handle and the lifting nut can be effectively avoided, and the screwing operation is influenced.
Preferably, the handle extends in a front-rear direction, and the width of the handle in the left-right direction is larger at a front end than at a rear end.
Has the advantages that: the cross-sectional dimension of the handle is reduced, and the force applying bar is convenient to sleeve on the handle, so that an operator can screw the lifting nut with small force.
Preferably, the handle extends in the front-rear direction, the number of the keys is two, and the two keys are arranged in the front-rear direction.
Has the advantages that: like this, the relative position of the key of rear side and keyway can be observed at the handle side to the operating personnel, and when the key of rear side and keyway were aimed at, the key of front side and keyway also automatic alignment make things convenient for the operating personnel to insert the key in the keyway at the handle side.
Drawings
FIG. 1 is a schematic diagram of a throttle valve according to the prior art;
fig. 2 is an assembly schematic view of a specific embodiment 1 of the valve stem disassembling tool of the present invention;
fig. 3 is a half-sectional view of a valve stem assembling and disassembling tool according to an embodiment 1 of the present invention;
FIG. 4 is a top view of the tool body of FIG. 2;
FIG. 5 is a bottom view of the tool body of FIG. 2;
FIG. 6 is a schematic view of the internal structure of the stop nut of FIG. 2;
fig. 7 is a state view of the valve stem attaching and detaching tool in fig. 2.
In the figure: 1-a tool body; 2-a limit nut; 3-upper part; 4-valve seat; 5-bolt; 6-lifting the nut; 7-a valve stem; 8-a cage sleeve; 9-a movable gap; 10-a seal assembly; 11-a bolt; a 101-bond; 102-a sleeve portion; 103-a handle; 104-inner hole; 201-section with larger diameter; 202-smaller diameter; 203-threaded hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 1:
as shown in fig. 2 and 3, the valve stem dismounting tool includes a tool main body 1 and a stop nut 2, as shown in fig. 4 and 5, the tool main body 1 includes a sleeve portion 102 and a handle 103, the sleeve portion 102 is used for being sleeved on the valve stem 7 of the throttle valve, and the handle 103 is used for a service person to perform screwing operation. As shown in fig. 7, the extending direction of the inner hole 104 of the sleeve part 102 is the vertical direction, the sleeve part 102 has a lower end surface facing the lifting nut 6 of the throttle valve when in use, a key 101 is arranged on the lower end surface of the sleeve part 102, the key 101 is used for matching with a key groove of the lifting nut 6 of the throttle valve, so that the sleeve part 102 is matched with the lifting nut 6 in a rotation stopping way, and the lifting nut 6 is driven to rotate when the tool body 1 rotates, and the valve rod 7 is driven to move up and down. The key groove of the lifting nut 6 is used for being matched with the key of the electric head in a rotation stopping way when the throttle valve is in normal use.
As shown in fig. 6, the limiting nut 2 is a hollow cylindrical metal part with different upper and lower outer diameters, and includes a larger diameter section 201 and a smaller diameter section 202 which are coaxially arranged, and the limiting nut 2 is provided with a threaded hole 203 which is vertically through and is used for being in threaded connection with the valve rod 7 of the throttle valve. The smaller diameter section 202 is adapted to be inserted into the internal bore 104 of the sleeve portion 102, and the lower end surface of the larger diameter section 201 forms a body stop surface. As shown in fig. 3, the height of the smaller diameter section 202 is smaller than the height of the sleeve portion 102 in the up-down direction, so that the smaller diameter section 202 of the retainer nut 2 is prevented from pressing against the lift nut 6, which makes it difficult to screw the tool body 1.
As shown in fig. 4 and 5, the sleeve portion 102 is cylindrical, the inner hole 104 of the sleeve portion 102 is a circular hole, and the handle 103 is welded and fixed to the radially rear side of the sleeve portion 102. The handle 103 extends in the front-rear direction, the keys 101 are provided in two, and are both metal keys 101, and the two keys 101 are arranged along one diameter of the sleeve portion 102, and are arranged in the front-rear direction. The handle 103 is provided to be biased to the right side of the sleeve portion 102 so that the tool body 1 is formed in a q-shape as a whole. The right side of the handle 103 is tangent to the sleeve portion 102 and the left side of the handle 103 is connected to the sleeve portion 102 by an arcuate transition surface. The handle 103 is larger than the rear end at the front end in the up-down direction and the left-right direction, and finally the rear end of the handle 103 is formed into a cone shape with a large front end and a small rear end, so that a force bar can be conveniently sleeved at the rear end of the handle 103 according to the field requirement, and the labor intensity of the maintainers is reduced. Furthermore, the handle 103 is arranged offset to the upper side of the sleeve part 102, and the upper side of the handle 103 is tangential to the sleeve part 102, and the lower side of the handle 103 is connected to the sleeve part 102 by an arc-shaped transition surface.
As shown in fig. 6, the larger diameter section 201 has an outer diameter greater than the diameter of the inner bore 104 and the smaller diameter section 202 has an outer diameter less than the diameter of the inner bore 104. After the sleeve part 102 is sleeved on the valve rod 7 of the throttle valve, the small diameter section 202 is inserted into the inner hole 104 of the sleeve part 102, the large diameter section 201 is positioned above the sleeve part 102, the lower end face of the large diameter section 201 is matched with the lifting nut 6 of the throttle valve to limit the tool body 1 in the up-and-down direction, and the key 101 is prevented from being disengaged from the key groove of the lifting nut 6.
When the valve rod 7 needs to be taken out, the bolt 5 in fig. 1 is disassembled, the upper part 3 of the throttle valve is separated from the valve seat 4, then the tool body 1 is sleeved on the valve rod 7 from the upper end of the valve rod 7, and the key 101 on the sleeve part 102 is matched with the key groove of the lifting nut 6; then, the limiting nut 2 is screwed on the valve rod 7, and the small diameter section 202 is inserted into the inner hole 104 of the sleeve part 102, at this time, the large diameter section 201 and the lifting nut 6 are matched to limit the tool body 1 in the up-and-down direction, as shown in fig. 7; the handle 103 is rotated in the forward direction to drive the lifting nut 6 to rotate, so that the valve rod 7 moves downwards, and the movable gap 9 is enlarged until the valve rod 7 is separated from the lifting nut 6; finally, the valve rod 7 is pulled out of the upper part 3 from the valve element side.
After the valve rod 7 is cleaned, the valve rod 7 is inserted from the lower end of the upper part 3 of the throttle valve, the lifting nut 6 is driven to rotate by reversely rotating the handle 103, and then the valve rod 7 is driven to ascend until the movable gap disappears, so that the sealing assembly 10 is ensured to be intact.
It should be noted that, when the handle 103 is screwed by inserting the smaller diameter section 202 into the sleeve portion 102, a certain space is provided between the lower end surface of the larger diameter section 201 and the upper end surface of the sleeve portion 102 so as not to affect the rotation of the lifting nut 6. Specifically, in the process of rotating the tool body 1, if the distance between the lower end surface of the section 201 with the larger diameter and the upper end surface of the sleeve part 102 is found to be too small, the spacing nut 2 is reversely screwed to keep a certain distance between the lower end surface of the section 201 with the larger diameter and the upper end surface of the sleeve part 102; if the distance between the lower end surface of the larger diameter section 201 and the upper end surface of the sleeve portion 102 is found to be too large, the spacing nut 2 is positively screwed to keep a certain distance between the lower end surface of the larger diameter section 201 and the upper end surface of the sleeve portion 102.
The lifting nut 2 of the throttle valve specifically comprises a nut inner ring and a nut outer ring, wherein the key groove is formed in the upper end face of the nut inner ring, and an inner hole of the nut inner ring is a threaded hole which is used for being in threaded connection with the valve rod; the nut outer ring is fixedly connected with the upper part 3 through a bolt, and the nut inner ring and the nut outer ring are assembled through a bearing, so that the nut inner ring can rotate relative to the nut outer ring. The bore 104 of the sleeve part 102 is larger than the diameter of the valve rod 7 of the throttle valve, so that the sleeve part 102 is convenient to be sleeved on the valve rod 7 of the throttle valve. In the process of rotating the tool body 1, if the tool body 1 is found to be incapable of rotating, a force lever can be sleeved at the rear end of the handle 103 to increase the screwing torque.
Use the utility model discloses a valve rod assembly and disassembly tools can realize taking out fast of valve rod 7 under the prerequisite of not disassembling choke valve upper part 3, and dismouting valve rod 7 in-process, and seal assembly 10 is in the seal groove of upper part 3 all the time, avoids appearing seal assembly 10 and pops out and the technical problem that can't fit back. Compared with the prior art, use the utility model discloses a valve rod assembly and disassembly tools dismouting valve rod has reduced the maintenance work load of choke valve, reduces maintenance operation intensity of labour, has saved repair time and energy, has improved the maintenance efficiency of choke valve.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 2:
it differs from the above example 1 mainly in that: valve stem assembly and disassembly tools includes tool body and stop nut among the above-mentioned embodiment 1, and stop nut and lifting nut cooperation are in order to carry out the spacing of upper and lower direction to tool body. The valve rod assembly and disassembly tools in the embodiment only comprise the tool main body, but not comprise the limiting nut, so that the key is prevented from being separated from the key groove when the tool main body is screwed, the size of the key can be properly increased, and the key is in interference fit with the key groove of the lifting nut. At this time, the key may be fitted into the key groove or removed from the key groove by lightly tapping the tool body.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 3:
it differs from the above example 1 mainly in that: the stop nut in embodiment 1 includes a larger diameter section and a smaller diameter section, the smaller diameter section is inserted into the inner hole of the sleeve portion, and a lower end surface of the larger diameter section forms a main body stop surface, and cooperates with the lifting nut of the throttle valve to vertically limit the tool main body. In this embodiment, the outer diameters of the limit nuts are equal in the vertical direction, and when the tool is used, the limit nuts are all located above the sleeve portion, and the lower end surfaces of the limit nuts form a main body stop surface and are matched with the lifting nut of the throttle valve to limit the tool main body in the vertical direction.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 4:
it differs from the above example 1 mainly in that: the handle is provided toward the right side of the sleeve portion in embodiment 1 described above. The handle is provided in the middle of the sleeve portion in the left-right direction in this embodiment.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 5:
it differs from the above example 1 mainly in that: the handle in the above embodiment 1 is provided biased to the upper side of the sleeve portion. In this embodiment, the handle is provided at the middle of the sleeve portion in the up-down direction. Of course, in other embodiments, the upper and lower end surfaces of the handle may be flush with the upper and lower end surfaces of the sleeve portion.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 6:
it differs from the above example 1 mainly in that: the size of the front end of the handle in the embodiment 1 is larger than that of the rear end, so that a force application bar is conveniently sleeved on the handle. The front and back size of handle is equal in this embodiment, can reach the effect of conveniently adorning the power thick stick at handle rear end suit through the mode of suitably reducing the cross sectional dimension of handle, and at this moment, in order to increase the joint strength of handle and sleeve part, can weld the reinforcing plate between handle front end and sleeve part.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 7:
it differs from the above example 1 mainly in that: the inner bore of the sleeve portion in embodiment 1 above is a circular bore. In the embodiment, the inner hole of the sleeve part is a hexagonal hole, and the inscribed circle of the hexagonal hole is larger than the diameter of the valve rod so as to be conveniently sleeved on the valve rod; the outer diameter of the smaller diameter section should be smaller than the diameter of the inscribed circle of the hexagonal hole to facilitate insertion into the inner bore of the sleeve portion.
The utility model discloses a valve rod assembly and disassembly tools's embodiment 8:
it differs from the above example 1 mainly in that: in the embodiment 1, the right side of the handle is tangent to the sleeve part, and the left side of the handle is connected with the sleeve part through the arc transition surface. In this embodiment, the right and left sides of the handle are both connected to the sleeve portion via an arcuate transition surface.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A valve rod assembly and disassembly tool is characterized by comprising:
a tool body, the tool body comprising: the sleeve part is sleeved on a valve rod of the throttle valve;
the handle is used for a maintainer to carry out screwing operation so as to drive the tool main body to rotate;
the extension direction of an inner hole of the sleeve part is taken as the vertical direction, and the sleeve part is provided with a lower end surface facing a lifting nut of the throttle valve when in use;
at least two keys are arranged on the lower end face of the sleeve part and are used for being matched with a key groove of a lifting nut of the throttle valve so as to drive the lifting nut to rotate when the tool main body rotates.
2. The valve stem disassembly and assembly tool of claim 1, further comprising a stop nut having a threaded bore for threaded engagement with a valve stem of a throttle valve;
the limiting nut is provided with a downward main body stopping surface, and when the key of the sleeve part is matched with the key groove of the lifting nut, the limiting nut is in threaded connection with the valve rod, so that the main body stopping surface is matched with the lifting nut of the throttle valve to limit the tool main body in the vertical direction.
3. The valve stem disassembly tool of claim 2, wherein the stop nut comprises a larger diameter section and a smaller diameter section, the larger diameter section having an outer diameter larger than that of the smaller diameter section, the larger diameter section being disposed at an upper portion of the smaller diameter section;
the section with the smaller diameter is used for being inserted into the inner hole of the sleeve part, and the lower end face of the section with the larger diameter forms the main body stop face.
4. The stem remover of claim 3, wherein the smaller diameter section has a height in the up-down direction that is less than the height of the sleeve portion.
5. A valve stem removal tool as claimed in claim 3 or claim 4, wherein said internal bore of said sleeve portion is a circular bore and said smaller diameter section is cylindrical.
6. The valve stem removal tool of any one of claims 1-4, wherein the handle extends in a forward-rearward direction, the handle being disposed offset to a right side of the sleeve portion.
7. The valve stem disassembly tool of claim 6, wherein the right side of the handle is tangent to the sleeve portion and the left side of the handle is connected to the sleeve portion by an arcuate transition surface.
8. A valve stem removal tool as claimed in any one of claims 1 to 4, wherein said handle is offset towards the upper side of the sleeve portion.
9. The valve stem remover of any one of claims 1-4, wherein the handle extends in a front-to-back direction, the handle has a width in a left-to-right direction, and a front end is larger than a rear end.
10. The valve stem disassembly tool of any of claims 1-4, wherein the handle extends in a front-to-back direction, and the key is provided in two, two keys being arranged in the front-to-back direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021797731.0U CN213319928U (en) | 2020-08-25 | 2020-08-25 | Valve rod assembly and disassembly tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021797731.0U CN213319928U (en) | 2020-08-25 | 2020-08-25 | Valve rod assembly and disassembly tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213319928U true CN213319928U (en) | 2021-06-01 |
Family
ID=76099922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021797731.0U Active CN213319928U (en) | 2020-08-25 | 2020-08-25 | Valve rod assembly and disassembly tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213319928U (en) |
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2020
- 2020-08-25 CN CN202021797731.0U patent/CN213319928U/en active Active
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