CN212508780U - Metering pump oxidized ceramic plunger with self-positioning function and mounting structure thereof - Google Patents
Metering pump oxidized ceramic plunger with self-positioning function and mounting structure thereof Download PDFInfo
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- CN212508780U CN212508780U CN202021093078.XU CN202021093078U CN212508780U CN 212508780 U CN212508780 U CN 212508780U CN 202021093078 U CN202021093078 U CN 202021093078U CN 212508780 U CN212508780 U CN 212508780U
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Abstract
The utility model relates to a metering pump oxidized ceramic plunger with self-positioning function and an installation structure thereof, wherein a ball head is arranged at one side of the plunger connected with a plunger handle, and the plunger and the ball head are matched to form an integrated structure; one side of the plunger handle, which is connected with the plunger, is provided with a ball handle, one side of the ball handle is provided with a spherical groove matched with the ball head, and the ball head is limited in the spherical groove through a ball head bolt pressing cap; a conical hole is formed in the middle of the ball stud pressing cap, the ball stud pressing cap is sleeved with the plunger and is installed with the spherical groove, and a taper is formed between the conical hole and the plunger. The utility model effectively reduces the requirement of concentric and coaxial precision of the crosshead, the plunger and the pump head cavity in the current market, so that the ceramic plunger metering pump can be produced in general manufacturers, and simultaneously, the use cost of users is greatly reduced; the problem of ceramic plunger because the machining precision rupture has effectually been solved, the life of ceramic plunger measuring pump has been improved, has reduced the maintenance cost of ceramic plunger pump.
Description
Technical Field
The utility model relates to a measuring pump oxide ceramic plunger with from positioning function and mounting structure thereof.
Background
As is known, a metering pump mainly comprises two parts, namely a power drive part and a fluid conveying part. The power driving device drives the fluid delivery plunger piston to realize reciprocating motion through a mechanical link system: the plunger draws the delivered fluid into the pump head during the first half of the stroke and discharges the fluid out of the pump head during the second half of the stroke; therefore, the purpose of adjusting the fluid delivery amount can be achieved by changing the reciprocating frequency of the stroke or the stroke length of each reciprocating motion. The precise machining precision ensures that the output of the pump at each time can further realize the precise metering of the conveyed medium.
Metering pumps can be broadly divided into two broad categories, plunger and diaphragm, due to their different power drive and fluid delivery modes.
The plunger metering pump is widely applied to the field of petrochemical industry due to the advantages of simple structure, high temperature and high pressure resistance, relatively simple maintenance, high cost performance and the like. At present, plungers of plunger type metering pumps in the market are almost made of stainless steel materials, because the stainless steel plungers are not hard enough and have insufficient corrosion resistance in an acid environment, the plungers are exposed, and the plungers work in liquid, and the plungers are abraded under the liquid grinding effect, so that medium liquid is slightly leaked. The application of flammable, explosive, highly toxic and valuable liquid is limited, and a hydraulic diaphragm metering pump is generally adopted.
At present, metering pump manufacturers adopt oxide ceramics as plunger materials, the oxide ceramics plunger is improved by times compared with a stainless steel plunger in corrosion resistance or wear resistance, and the oxide ceramics plunger replaces a hydraulic diaphragm metering pump in a plurality of original places.
However, the ceramic plunger has a fatal weakness, namely is brittle and easy to break, and particularly in a small-flow high-pressure occasion, the requirement on the coaxiality of a connecting rod crosshead, the plunger and a pump head cavity is very high, so that the investment on production equipment and the enterprise management level of an enterprise are caused, and meanwhile, the quality of production and assembly personnel is very high. Except for a few top-level enterprises abroad, domestic enterprises can not produce basically. Therefore, the metering pump oxidized ceramic plunger with the self-positioning function is urgently needed in the market, so that the coaxiality requirement can be greatly reduced, and the oxidized ceramic plunger pump is convenient to popularize in the market.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a measuring pump oxide ceramic plunger and mounting structure's technical scheme with from positioning function.
The metering pump oxidized ceramic plunger with the self-positioning function comprises a plunger and a plunger handle, and is characterized in that a ball head is arranged on one side of the plunger, which is connected with the plunger handle, and the plunger and the ball head are matched to form an integral structure; one side of the plunger handle, which is connected with the plunger, is provided with a ball handle, one side of the ball handle is provided with a spherical groove matched with the ball head, and the ball head is limited in the spherical groove through a ball head bolt pressing cap; the middle of the ball stud pressing cap is provided with a tapered hole, the ball stud pressing cap is sleeved with the plunger and is installed with the spherical groove, a taper is formed between the tapered hole and the plunger, and the angle of the plunger after being installed with the plunger handle can be finely adjusted.
The metering pump oxidized ceramic plunger with the self-positioning function is characterized in that the plunger and the ball head are both made of oxidized ceramic, and the plunger and the ball head are sintered to form a ceramic plunger assembly; the plunger handle and the ball stud pressure cap are made of 304 stainless steel.
The metering pump oxidized ceramic plunger with the self-positioning function is characterized in that the ball stud pressure cap is provided with external threads, the spherical groove of the ball handle is provided with internal threads, and the ball stud pressure cap is in threaded connection with the spherical groove.
The metering pump oxidized ceramic plunger with the self-positioning function is characterized in that the contact end of the ball stud pressure cap and the ball head is arranged to be a concave sphere matched with the ball head.
The metering pump oxidized ceramic plunger with the self-positioning function is characterized in that a groove is formed in the outer edge of the plunger at the joint of the plunger and a ball head.
The metering pump oxidized ceramic plunger with the self-positioning function is characterized in that at least one groove is formed.
The metering pump oxidized ceramic plunger with the self-positioning function is characterized in that a rectangular groove is formed in one side, connected with a crosshead, of a plunger handle.
The mounting structure of the ceramic oxide plunger is characterized in that the plunger is arranged in a pump head cavity of the metering pump in a matching mode, and the taper formed between the tapered hole of the ball stud pressing cap and the plunger can enable the pump head cavity and the central line of the crosshead to have an adjustable angle.
In order to overcome the weak point of current oxidation ceramic plunger measuring pump at the easy rupture of the high pressure of carrying low discharge, the utility model provides a measuring pump oxidation ceramic plunger with from positioning function, this oxidation ceramic plunger's design is more than 3 times than the life-span on the existing market, requires greatly reduced to the processing of measuring pump and assembly simultaneously, and the processing cost is less than original half, and oxidation ceramic plunger measuring pump is in the unable field of using of high pressure low discharge on the existing market once more, the utility model provides an oxidation ceramic plunger can all be suitable for, means the utility model discloses the application field of oxidation ceramic plunger measuring pump has greatly been enlarged in oxidation ceramic plunger's use.
The beneficial effects of the utility model are that, it requires concentric coaxial to require cross head, plunger and pump head cavity to change on the existing market, requires that the required precision is very high moreover, otherwise causes ceramic plunger rupture easily. As most of domestic manufacturers can not meet the technical requirements due to processing, manufacturing, management and worker technical capabilities, the diameter of the pump head cavity is increased, and the pretightening force of the plunger adjusting bolt, the thread adjusting plunger seal in the pump head cavity and the ceramic plunger is reduced, so that the aim is fulfilled. However, the disadvantage is that the ceramic plunger is easy to break, and only stainless steel plunger is needed, especially in small flow and high pressure plunger metering pump, and only top-grade factories abroad use ceramic plunger, and the plunger metering pump designed in this way is easy to leak slightly, and can not be applied to flammable, explosive, highly toxic and valuable liquids. The utility model discloses a ceramic plunger is because ceramic plunger is equipped with the bulb, and plunger handle and ball stud press the cap simultaneously and all are equipped with spherical groove, and the assembly part that the three cooperation is constituteed presses the bell mouth that sets up in the middle of the cap and ceramic plunger's tapering according to the ball stud, can also cross the head central line according to the pump head cavity and adjust suitable angle, presses cap and plunger handle locking ball head ceramic plunger through the ball stud at last.
In summary, the following steps: the beneficial effects of the utility model are that
1. The precision requirement that the crosshead, the plunger and the pump head cavity are concentric and coaxial in the current market is reduced, so that the ceramic plunger metering pump can be produced by common manufacturers, and the use cost of a user is greatly reduced.
2. The problem of ceramic plunger because the machining precision rupture has effectually been solved, the life of ceramic plunger measuring pump has been improved, has reduced the maintenance cost of ceramic plunger pump.
3. Meanwhile, the pretightening force of the plunger piston adjusting bolt and the thread adjusting plunger piston seal and the ceramic plunger piston in the pump head cavity can be improved, so that the pretightening force of the ceramic plunger piston and the plunger piston seal completely meets the design requirements. The ceramic plunger has the characteristics of high hardness, good wear resistance and strong corrosion capability, so that the purpose of no leakage even if a small-flow high-pressure medium is conveyed is achieved. Can be completely applied to flammable, explosive, high-toxicity and valuable liquids. The application field of the plunger metering pump is effectively widened, and the competitiveness of the ceramic plunger metering pump is greatly improved.
Drawings
FIG. 1 is a schematic sectional view of an assembly of a conventional ceramic oxide plunger assembled in a metering pump;
FIG. 2 is a schematic cross-sectional view of a conventional oxide ceramic column;
FIG. 3 is a schematic cross-sectional view of an assembly of the oxide ceramic plunger in the metering pump according to the present invention;
FIG. 4 is a schematic cross-sectional view of a drive end assembly of the metering pump;
FIG. 5 is a schematic cross-sectional view of the oxide ceramic column of the present invention;
FIG. 6 is a schematic view of the plunger of the present invention;
FIG. 7 is a schematic structural view of the ball head of the present invention;
FIG. 8 is a schematic structural view of the ball head of the present invention after being connected to the plunger;
fig. 9 is a structural schematic of the ball stud pressure cap of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings in the following description:
referring to fig. 1-2, in the prior art, an inlet valve 1 and an outlet valve 3 are installed at the upper end and the lower end of a pump head 2, a pump head cavity is matched with a plunger 4a-1, the plunger 4a-1 penetrates through a plunger seal 5 and a plunger adjusting bolt 6 is in threaded connection with a crosshead at a transmission end 9, the center of the plunger adjusting bolt 6 penetrates through the plunger 4a-1 and is in threaded connection with the pump head 2 central cavity, the end face is in compression joint with the plunger seal 5, the pump head 2 is provided with a boss matched with a bracket body 8 and is fixed by screws, and the bracket body 8 is matched with the boss at the transmission end and is fixed by screws (the structure of the plunger pump. Because the plunger 4a-1 and the plunger handle 4a-2 can not be adjusted, the crosshead, the plunger 4a-1 and the pump head cavity are required to be concentric and coaxial, and the required precision requirement is very high, otherwise, stress concentration at the plunger B is easily caused, and the ceramic plunger is broken. As most of domestic manufacturers can not meet the technical requirements due to processing, manufacturing, management and worker technical capabilities, the diameter of the pump head cavity is increased, and the pretightening force of the plunger adjusting bolt, the thread adjusting plunger seal in the pump head cavity and the ceramic plunger is reduced, so that the aim is fulfilled. However, the disadvantage is that the ceramic plunger is easy to break, and only stainless steel plunger is needed, especially in small flow and high pressure plunger metering pump, and only top-grade factories abroad use ceramic plunger, and the plunger metering pump designed in this way is easy to leak slightly, and can not be applied to flammable, explosive, highly toxic and valuable liquids.
In order to overcome the weak point of current oxidation ceramic plunger measuring pump at the easy rupture of the high pressure of carrying low discharge, the utility model provides a measuring pump oxidation ceramic plunger with from positioning function, this oxidation ceramic plunger's design is more than 3 times than the life-span on the existing market, requires greatly reduced to the processing of measuring pump and assembly simultaneously, and the processing cost is less than original half, and oxidation ceramic plunger measuring pump is in the unable field of using of high pressure low discharge on the existing market once more, the utility model provides an oxidation ceramic plunger can all be suitable for, means the utility model discloses the application field of oxidation ceramic plunger measuring pump has greatly been enlarged in oxidation ceramic plunger's use.
As shown in fig. 3-9, the utility model discloses an oxidation ceramic plunger, including plunger 4-1 and plunger handle 4-3, one side that the plunger is connected with the plunger handle sets up bulb 4-2, sets up recess C in the plunger outer fringe of plunger and bulb junction, and the recess sets up one at least, and the recess setting can strengthen the firmness that bulb and plunger are connected, and the plunger sets up integrative structure with the cooperation of bulb, specifically, plunger and bulb all adopt oxidation ceramic, and the plunger constitutes ceramic plunger subassembly through the sintering with the bulb. One side of the plunger handle 4-3 connected with the crosshead is provided with a rectangular groove, one side of the plunger handle connected with the plunger is provided with a ball handle, one side of the ball handle is provided with a spherical groove matched with the ball head, the ball head is arranged in the spherical groove in a limiting mode through a ball head bolt pressure cap 4-4, specifically, the contact end of the ball head bolt pressure cap and the ball head is arranged to be in a concave spherical shape matched with the ball head, the ball head bolt pressure cap is convenient to fix and adjust the angle, an external thread is arranged on the ball head bolt pressure cap, an internal thread is arranged in the spherical groove of the ball handle, the ball head bolt pressure cap is in threaded connection with the spherical groove, and the. A taper hole is formed in the middle of the ball stud pressing cap, the ball stud pressing cap is sleeved with the plunger and is installed with the spherical groove, a taper E is formed between the taper hole and the plunger, and the angle a of the plunger after being installed with the plunger handle can be finely adjusted.
The utility model discloses a plunger cooperation sets up in the pump head cavity of measuring pump, and the tapering that forms between the bell mouth of ball stud pressure cap and the plunger can make pump head cavity and cross head central line have an adjustable angle an, will hang down a lot to the coaxial requirement of plunger and cross head like this, greatly reduced the processing degree of difficulty of plunger.
The utility model discloses the oxide ceramic plunger adopts 304 stainless steel and oxide ceramic to combine together two kinds of materials, and plunger handle and ball stud press the cap to adopt 304 stainless steel material, and the plunger adopts oxide ceramic. Plunger handle has set up a rectangular channel and measuring pump transmission end cross head at the rear end and has been connected through U type jump ring, one end sets up the ball handle in addition, set up spherical groove on the ball handle, spherical groove and bulb cooperation, the bulb has set up a blind hole, set up the plunger that has the rectangular channel in the blind hole, the blind hole of bulb and the sintering behind the cooperation of oxide ceramic material plunger, turning and grinding, oxide ceramic plunger and bulb form a whole and be bulb ceramic plunger, the rectangular channel that sets up on the plunger (the ceramic plunger that uses does not have this characteristic rectangular channel C on the existing market, the cohesion is not enough, cause plunger and plunger handle separation that drops easily) has increased oxide ceramic plunger and bulb cohesion, very big increase mechanical properties. The middle of the ball stud pressure cap is provided with a tapered hole, the ball stud pressure cap passes through the plunger and is in threaded connection with threads arranged at the front end of the spherical groove of the plunger handle, and the ball stud pressure cap fixes the ball ceramic plunger through the threaded connection. The plunger is matched with a pump head cavity of a plunger of a metering pump, the plunger pump head, the bracket body and the transmission end are fixed through bolt screwing, a plunger seal and a plunger seal adjusting bolt are arranged in the pump head cavity, a through hole is arranged between the plunger seal adjusting bolt and the plunger seal and penetrates through a ceramic plunger and the pump head cavity, pre-tightening quantity of the plunger seal and the ceramic plunger is adjusted through threads in the plunger seal adjusting bolt and the pump head cavity, and an inlet and outlet valve is arranged at the upper end and the lower end of the pump head.
Because the ceramic plunger is equipped with bulb 4-2, and the plunger handle is equipped with spherical groove simultaneously, and the ball stud pressure cap is equipped with concave spherical structure, the assembly part that the three cooperation was constituteed, the bell mouth that sets up in the middle of the ball stud pressure cap forms tapering E with ceramic plunger, can adjust out suitable angle with pump head cavity and cross head central line, has following advantage:
1. the precision requirement that a crosshead, a plunger and a pump head cavity are concentric and coaxial in the current market is effectively reduced, so that the ceramic plunger metering pump can be produced in general manufacturers, and the use cost of a user is greatly reduced;
2. the problem that the ceramic plunger is broken due to machining precision is effectively solved, the service life of the ceramic plunger metering pump is prolonged, and the maintenance cost of the ceramic plunger pump is reduced;
3. meanwhile, the pretightening force of the plunger piston adjusting bolt and the thread adjusting plunger piston seal and the ceramic plunger piston in the pump head cavity can be improved, so that the pretightening force of the ceramic plunger piston and the plunger piston seal can completely meet the design requirements; the ceramic plunger has the characteristics of high hardness, good wear resistance and strong corrosion capability, so that the purpose of no leakage even if a small-flow high-pressure medium is conveyed is achieved; the ceramic plunger metering pump can be completely applied to flammable, explosive, highly toxic and precious liquids, effectively widens the application field of the plunger metering pump, and greatly increases the competitiveness of the ceramic plunger metering pump.
Claims (8)
1. A metering pump oxidized ceramic plunger with a self-positioning function comprises a plunger and a plunger handle, and is characterized in that a ball head is arranged on one side of the plunger connected with the plunger handle, and the plunger and the ball head are matched to form an integral structure; one side of the plunger handle, which is connected with the plunger, is provided with a ball handle, one side of the ball handle is provided with a spherical groove matched with the ball head, and the ball head is limited in the spherical groove through a ball head bolt pressing cap; the middle of the ball stud pressing cap is provided with a tapered hole, the ball stud pressing cap is sleeved with the plunger and is installed with the spherical groove, a taper is formed between the tapered hole and the plunger, and the angle of the plunger after being installed with the plunger handle can be finely adjusted.
2. A metering pump oxidized ceramic plunger with a self-positioning function as claimed in claim 1, characterized in that the plunger and the ball head are both made of oxidized ceramic, and the plunger and the ball head are sintered to form a ceramic plunger assembly; the plunger handle and the ball stud pressure cap are made of 304 stainless steel.
3. A metering pump oxidized ceramic plunger with self-positioning function as claimed in claim 1, characterized in that the ball-bolt press cap is provided with external threads, the spherical groove of the ball shank is provided with internal threads, and the ball-bolt press cap is in threaded engagement with the spherical groove.
4. A metering pump oxidized ceramic plunger with self-positioning function according to claim 1, characterized in that the contact end of the ball stud pressure cap and the ball head is arranged into a concave spherical shape matched with the ball head.
5. The ceramic oxide plunger for the metering pump with the self-positioning function as claimed in claim 1, wherein a groove is formed on the outer edge of the plunger at the joint of the plunger and the ball head.
6. A metering pump oxidized ceramic plunger with self-positioning function according to claim 5, characterized in that at least one groove is provided.
7. The ceramic oxide plunger for the metering pump with the self-positioning function as claimed in claim 1, wherein a rectangular groove is formed in one side of the plunger handle connected with the crosshead.
8. The utility model provides a mounting structure of measuring pump oxidation ceramic plunger with from locate function which characterized in that: the plunger of claim 1, cooperatively disposed within a pump head chamber of a metering pump, the taper formed between the tapered bore of the ball stud compression cap and the plunger being such that the pump head chamber has an adjustable angle with respect to a centerline of the crosshead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093078.XU CN212508780U (en) | 2020-06-15 | 2020-06-15 | Metering pump oxidized ceramic plunger with self-positioning function and mounting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093078.XU CN212508780U (en) | 2020-06-15 | 2020-06-15 | Metering pump oxidized ceramic plunger with self-positioning function and mounting structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212508780U true CN212508780U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021093078.XU Active CN212508780U (en) | 2020-06-15 | 2020-06-15 | Metering pump oxidized ceramic plunger with self-positioning function and mounting structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212508780U (en) |
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2020
- 2020-06-15 CN CN202021093078.XU patent/CN212508780U/en active Active
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