CN211900899U - Accurate metering pump for chemical product production - Google Patents
Accurate metering pump for chemical product production Download PDFInfo
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- CN211900899U CN211900899U CN202020407619.5U CN202020407619U CN211900899U CN 211900899 U CN211900899 U CN 211900899U CN 202020407619 U CN202020407619 U CN 202020407619U CN 211900899 U CN211900899 U CN 211900899U
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- pipe
- connecting rod
- external screw
- metering pump
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Abstract
The utility model discloses an accurate measuring pump is used in chemical products production, including connecting rod case and external screw thread pipe, connecting rod roof portion is provided with the motor, and the motor bottom is connected with the worm, and worm bottom meshing is connected with the eccentric wheel, and eccentric wheel one side is provided with the connecting rod, and the connecting rod outer end is connected with the piston rod, and piston rod outer wall parcel has the protecting tube, and external screw thread union coupling is inside protecting tube one end, and external screw thread pipe end-to-end connection has the conveyer pipe, and conveyer pipe one side is provided with the feed liquor valve, and the spread groove has been seted up to external screw thread pipe side, and. This chemical products production is with flexible rubber sleeve surface of accurate measuring pump is provided with the crease, thereby when the piston plate is piston motion flexible rubber sleeve is flexible the folding work that replaces the diaphragm thereupon, and flexible rubber sleeve is more reasonable with its structure of diaphragm relative ratio, is favorable to improving life, and rubber has fabulous toughness, crushing resistance and leakproofness simultaneously, prevents that flexible rubber sleeve from taking place to break.
Description
Technical Field
The utility model relates to a measuring pump technical field specifically is an accurate measuring pump is used in chemical product production.
Background
The motor of the metering pump rotates to drive the worm to rotate. The worm obtains the reciprocating motion of the connecting rod through the action of the eccentric wheel, the connecting rod pushes the piston to enable the piston to do reciprocating motion in the working chamber of the metering pump, when the piston retracts, vacuum is formed in the pump chamber, the suction valve is opened, the discharge valve is closed, liquid enters the pump chamber, when the piston extends out, the suction valve is closed, the discharge valve is opened, the liquid is discharged from the discharge valve, the metering pump is also called a metering pump or a proportional pump, the metering pump is a reciprocating pump capable of adjusting the flow, the flow can be adjusted steplessly within the range of 0-100%, the metering pump is characterized in that when the flow is adjusted, the discharge pressure can be kept constant, and the metering pump is widely applied to the field of petrochemical production.
The inside diaphragm piece of present measuring pump cylinder appears breaking the condition easily after long-term the use, leads to the liquid seepage, and the whole full seal structure that is of pump cylinder, is difficult for disassembling the repair, so one when taking place the pump cylinder and take place the condition of breaking, the practicality of measuring pump will greatly reduced, to above-mentioned condition, we have released an accurate measuring pump for chemical product production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an accurate measuring pump is used in chemical products production to the diaphragm piece that provides general measuring pump cylinder inside among the solution above-mentioned background art appears the condition of breaking easily after long-term the use, leads to the liquid seepage, and the pump cylinder is whole to be full seal structure, is difficult for disassembling the repair, so one takes place the condition of breaking when taking place the pump cylinder, the practicality of measuring pump is the problem of greatly reduced.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an accurate measuring pump is used in chemical products production, including connecting rod case and external screw thread pipe, connecting rod roof portion is provided with the motor, and the motor bottom is connected with the worm, worm bottom meshing is connected with the eccentric wheel, and eccentric wheel one side is provided with the connecting rod, the connecting rod outer end is connected with the piston rod, and piston rod outer wall parcel has the protecting tube, external screw thread union coupling is inside protecting tube one end, and external screw thread pipe end-to-end connection has the conveyer pipe, conveyer pipe one side is provided with the feed liquor valve, and the conveyer pipe opposite side is provided with the liquid outlet valve, the spread groove has been seted up to.
Preferably, the piston rod forms a protective structure through a protective pipe, and the protective pipe is in threaded connection with the conveying pipe through an external threaded pipe.
Preferably, the structural dimension of the outer opening at the front end of the telescopic rubber sleeve is matched with the structural dimension of the inner opening of the connecting groove, and the front end of the telescopic rubber sleeve is connected with the connecting groove in a welding mode.
Preferably, the conveying pipe and the external thread pipe are in a welding integrated structure, and the conveying pipe forms a sealing structure through a telescopic rubber sleeve.
Preferably, the surface of the telescopic rubber sleeve is provided with a crease, and the tail end of the telescopic rubber sleeve is connected with a piston plate.
Preferably, the central axis of the telescopic rubber sleeve and the central axis of the piston rod are located on the same horizontal line, and the telescopic rubber sleeve forms a telescopic structure through a crease and the piston plate.
Compared with the prior art, the beneficial effects of the utility model are that: this accurate measuring pump is used in chemical products production replaces the diaphragm with flexible rubber sleeve, and flexible rubber sleeve surface is provided with the crease, thereby the flexible rubber sleeve is flexible folding work of replacing the diaphragm thereupon when the piston plate is piston motion, and flexible rubber sleeve is more reasonable with its structure of diaphragm relative ratio, is favorable to improving life, and rubber has fabulous toughness, crushing resistance and leakproofness simultaneously, prevents that flexible rubber sleeve from taking place to break.
This chemical products production is fixed with inside rethread electric fusion welding of spread groove card income at the flexible rubber sleeve front end of accurate measuring pump, be favorable to improving the fastness of being connected between flexible rubber sleeve and the external screw thread pipe, be favorable to improving the inside leakproofness of conveyer pipe simultaneously, prevent the liquid seepage, and flexible rubber sleeve can hold the liquid volume with conveyer inside and be fixed, so flexible rubber sleeve is flexible the liquid volume of propelling movement at every turn also fixed, thereby be favorable to improving the accuracy when this measuring pump carries the operation.
For threaded connection between this chemical products production is with accurate measuring pump protecting tube and the external screw thread pipe, keep apart flexible rubber sleeve through the protecting tube and played the guard action, it is inside to avoid impurity such as dust foreign matter to get into the protecting tube, and later stage accessible anticlockwise rotation protecting tube takes off it in addition, makes things convenient for maintainer to maintain to overhaul flexible rubber sleeve.
Drawings
FIG. 1 is a schematic view of the front view of the internal structure of the present invention;
FIG. 2 is a schematic view of the protective tube of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.
In the figure: 1. a connecting rod box; 2. a motor; 3. a worm; 4. an eccentric wheel; 5. a connecting rod; 6. a piston rod; 7. a protective tube; 8. an externally threaded tube; 9. a delivery pipe; 10. a liquid inlet valve; 11. a liquid outlet valve; 12. connecting grooves; 13. a telescopic rubber sleeve; 14. folding; 15. a piston plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an accurate metering pump for chemical product production comprises a connecting rod box 1 and an external thread pipe 8, wherein a motor 2 is arranged at the top of the connecting rod box 1, a worm 3 is connected to the bottom end of the motor 2, an eccentric wheel 4 is in meshing connection with the bottom of the worm 3, a connecting rod 5 is arranged on one side of the eccentric wheel 4, a piston rod 6 is connected to the outer end of the connecting rod 5, a protective pipe 7 wraps the outer wall of the piston rod 6, the external thread pipe 8 is connected to the inner portion of one end of the protective pipe 7, a conveying pipe 9 is connected to the tail end of the external thread pipe 8, the piston rod 6 forms a protective structure through the protective pipe 7, the protective pipe 7 is in threaded connection with the conveying pipe 9 through the external thread pipe 8, the piston rod 6 penetrates through the protective pipe 7, the stability of the piston rod 6 during piston movement can be improved through the protective pipe 7, impurities in the, the protective pipe 7 can be removed by rotating the protective pipe anticlockwise in the later period, so that maintenance personnel can conveniently maintain and overhaul the inside of the protective pipe 7;
one side of the delivery pipe 9 is provided with a liquid inlet valve 10, the other side of the delivery pipe 9 is provided with a liquid outlet valve 11, the side surface of the external thread pipe 8 is provided with a connecting groove 12, and a telescopic rubber sleeve 13 is fixed inside the connecting groove 12, the structural size of an outer opening at the front end of the telescopic rubber sleeve 13 is matched with the structural size of an inner opening of the connecting groove 12, the front end of the telescopic rubber sleeve 13 is connected with the connecting groove 12 in a welding mode, the conveying pipe 9 and the external thread pipe 8 are in a welding integrated structure, and the conveying pipe 9 forms a sealing structure through the telescopic rubber sleeve 13, the front end of the telescopic rubber sleeve 13 is clamped into the connecting groove 12 and then fixed through electric fusion welding, which is beneficial to improving the firmness of the connection between the telescopic rubber sleeve 13 and the external thread pipe 8, the conveying pipe 9 and the external thread pipe 8 are in a welding integrated structure, so that the sealing performance inside the conveying pipe 9 is improved, and liquid leakage is prevented;
The working principle is as follows: when the accurate metering pump for chemical product production is used, firstly, the motor 2 drives the worm 3 to enable the eccentric wheel 4 to drive the connecting rod 5 to enable the piston rod 6 to do piston motion inside the protective tube 7, the telescopic rubber sleeve 13 is telescopic and folded along with the telescopic rubber sleeve, when the telescopic rubber sleeve 13 is extended, the liquid inlet valve 10 is opened and the liquid outlet valve 11 is closed, liquid enters the conveying pipe 9, then when the telescopic rubber sleeve 13 is contracted and folded, the liquid inlet valve 10 is closed and the liquid outlet valve 11 is opened, liquid is discharged from the liquid outlet valve 11, the structure of the telescopic rubber sleeve 13 is more reasonable compared with that of a diaphragm, the service life is prolonged, meanwhile, the rubber has excellent toughness, pressure resistance and sealing performance, the telescopic rubber sleeve 13 is prevented from cracking, finally, the protective tube 7 is in threaded connection with the external threaded tube 8, the protective effect is achieved by the protective tube 7 by isolating the telescopic rubber sleeve 13, and impurities such as dust and foreign matters are prevented from, and later stage accessible anticlockwise rotation protective tube 7 takes off it, makes things convenient for maintainer to maintain flexible rubber sleeve 13 and overhauls.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an accurate measuring pump is used in chemical products production, includes connecting rod case (1) and external screw thread pipe (8), its characterized in that: connecting rod case (1) top is provided with motor (2), and motor (2) bottom is connected with worm (3), worm (3) bottom meshing is connected with eccentric wheel (4), and eccentric wheel (4) one side is provided with connecting rod (5), connecting rod (5) outer end is connected with piston rod (6), and piston rod (6) outer wall parcel has protecting tube (7), external screw pipe (8) are connected inside protecting tube (7) one end, and external screw pipe (8) end-to-end connection has conveyer pipe (9), conveyer pipe (9) one side is provided with feed liquor valve (10), and conveyer pipe (9) opposite side is provided with drain valve (11), spread groove (12) have been seted up to external screw pipe (8) side, and spread groove (12) inside is fixed with flexible rubber sleeve (13).
2. The accurate metering pump for chemical product production according to claim 1, wherein: the piston rod (6) forms a protective structure through a protective pipe (7), and the protective pipe (7) is in threaded connection with the conveying pipe (9) through an external threaded pipe (8).
3. The accurate metering pump for chemical product production according to claim 1, wherein: the outer opening structure size of the front end of the telescopic rubber sleeve (13) is matched with the inner opening structure size of the connecting groove (12), and the front end of the telescopic rubber sleeve (13) is connected with the connecting groove (12) in a welding mode.
4. The accurate metering pump for chemical product production according to claim 1, wherein: the conveying pipe (9) and the external threaded pipe (8) are in a welding integrated structure, and the conveying pipe (9) forms a sealing structure through a telescopic rubber sleeve (13).
5. The accurate metering pump for chemical product production according to claim 1, wherein: the surface of the telescopic rubber sleeve (13) is provided with a crease (14), and the tail end of the telescopic rubber sleeve (13) is connected with a piston plate (15).
6. The accurate metering pump for chemical product production according to claim 5, wherein: the central axis of the telescopic rubber sleeve (13) and the central axis of the piston rod (6) are located on the same horizontal line, and the telescopic rubber sleeve (13) forms a telescopic structure between the crease (14) and the piston plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020407619.5U CN211900899U (en) | 2020-03-26 | 2020-03-26 | Accurate metering pump for chemical product production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020407619.5U CN211900899U (en) | 2020-03-26 | 2020-03-26 | Accurate metering pump for chemical product production |
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| Publication Number | Publication Date |
|---|---|
| CN211900899U true CN211900899U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020407619.5U Active CN211900899U (en) | 2020-03-26 | 2020-03-26 | Accurate metering pump for chemical product production |
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| CN (1) | CN211900899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700643A (en) * | 2021-09-15 | 2021-11-26 | 湖北中油科昊机械制造有限公司 | Oil field plunger pump |
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2020
- 2020-03-26 CN CN202020407619.5U patent/CN211900899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700643A (en) * | 2021-09-15 | 2021-11-26 | 湖北中油科昊机械制造有限公司 | Oil field plunger pump |
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