CN214787838U

CN214787838U - Novel precision plunger metering pump

Info

Publication number: CN214787838U
Application number: CN202120825787.0U
Authority: CN
Inventors: 周夕晴
Original assignee: Kapton Automation Equipment Guangzhou Co ltd
Current assignee: Kapton Automation Equipment Guangzhou Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-11-19
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a novel precise plunger metering pump, which comprises a cylinder body, a plunger replacing unit and a cylinder cover quick-dismantling unit; a cylinder body: a plunger cylinder is fixed in the middle of the left side surface, the plunger cylinder is communicated with the inside of the cylinder body, and the side surface of the right end of the plunger cylinder is fixedly connected with the inner side surface of the fixing ring; a plunger replacing unit: including activity plunger, screw rod and fixed plunger, the left end of fixed plunger is located the inside of plunger section of thick bamboo right-hand member, and the right-hand member of fixed plunger extends to the inside of cylinder body, the middle part of fixed plunger left surface and the right-hand member fixed connection of screw rod, the screw hole threaded connection of screw rod and activity plunger right flank middle part, this novel accurate plunger metering pump can make things convenient for quick pull down the cylinder cap to maintain and maintain the plunger of measuring pump to when plunger and transport liquid contact site take place to corrode and wear, can pull down the change with the position that wears out, reduce the time of maintaining, convenient to use.

Description

Novel precision plunger metering pump

Technical Field

The utility model relates to a plunger measuring pump technical field specifically is a novel accurate plunger measuring pump.

Background

The metering pump is a special volumetric pump for conveying liquid (especially corrosive liquid), and is characterized by that it can retain a constant flow rate independent of discharge pressure. The functions of conveying, metering and adjusting can be simultaneously completed by using the metering pump, thereby simplifying the production process flow, the precision plunger metering pump enables one type of the metering pump, which is mainly used in the field of petrochemical industry, because most chemical liquid has corrosivity, the rapid abrasion of one end of a plunger in the metering pump, which is contacted with the liquid, is easy to cause, and because the plungers of the metering pump are of an integrated structure, the whole plunger is required to be replaced when the plunger is abraded or damaged, the pump body is required to be detached when the plunger is replaced, which is very troublesome and inconvenient to use, and most cylinder covers of the existing metering pumps are directly fixed on the cylinder body through a plurality of bolts, all bolts are required to be detached when the interior of the metering pump is required to be maintained and repaired, thus, the disassembly of the cylinder covers is more troublesome, the rapid maintenance and the maintenance of the metering pump are not favorable, and the bolts can be aged and rusted, is difficult to disassemble, leads to difficult maintenance and repair of the metering pump,

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses a novel precision plunger metering pump, which adopts the technical proposal that the metering pump comprises a cylinder body, a plunger replacing unit and a cylinder cover quick-dismantling unit;

a cylinder body: a plunger cylinder is fixed in the middle of the left side surface, the plunger cylinder is communicated with the inside of the cylinder body, and the side surface of the right end of the plunger cylinder is fixedly connected with the inner side surface of the fixing ring;

a plunger replacing unit: the left end of the fixed plunger is positioned inside the right end of the plunger barrel, the right end of the fixed plunger extends into the cylinder body, the middle of the left side surface of the fixed plunger is fixedly connected with the right end of the screw rod, the screw rod is in threaded connection with the screw hole in the middle of the right side surface of the movable plunger, a plunger replacing unit is arranged, so that the contact part of the plunger and liquid can be conveniently detached and replaced when the plunger is corroded, and the troublesome operation of detaching the whole pump body when the plunger is maintained is avoided;

cylinder cap quick detach unit: the four fixing holes are arranged on the left side face of the fixing ring at equal angles, the fixing blocks are arranged in the middle of the inner side faces of the four fixing holes, the four fixing rods are arranged, the left ends of the four fixing rods are rotatably connected with the outer side of the right side face of the cylinder cover, arc-shaped grooves corresponding to the four fixing blocks are formed in the side faces of the four fixing rods, the four fixing grooves are formed in the side faces of the right end of the fixing rod respectively and are communicated with the arc-shaped grooves in the side faces of the four fixing rods, the four fixing grooves correspond to the four fixing blocks, the support ring is sleeved on the outer side of the plunger cylinder, through holes corresponding to the four fixing rods are formed in the left side face of the support ring, the four springs are arranged, and the four springs are sleeved on the outer sides of the four fixing rods respectively, and the both ends of four springs respectively with the right flank of cylinder cap and the left surface fixed connection of support ring, the cylinder cap quick detach unit that sets up can be when maintaining the plunger fast convenient pull down the cylinder cap, make the maintenance of plunger and the pump body can quick completion to need not the bolt as the connecting piece, can effectually prevent that smooth silk or the rusty condition of ageing from appearing in the bolt, make the cylinder cap pull down fast smoothly, convenient to use.

As the utility model discloses an optimal technical scheme still includes hexagonal recess and rubber circle, the middle part at the activity plunger left surface is seted up to the hexagonal recess, the rubber circle is established at the middle part of cylinder cap right flank, and the left surface of rubber circle and plunger section of thick bamboo corresponds, and the hexagonal recess of setting can use outside instrument to borrow power when dismantling and installing the activity plunger, the change of the plunger of being convenient for, the leakproofness with plunger section of thick bamboo hookup location of the multiplicable cylinder cap of rubber pad of setting.

As a preferred technical scheme of the utility model, still include backup pad and mounting hole, the backup pad is the L type, and the backup pad is equipped with two, and two backup pads are fixed respectively in the front and back both sides of cylinder body lower surface, and three mounting hole has all been seted up to the upper surface of two backup pad lower extremes, and the backup pad and the mounting hole of setting can make the measuring pump fix the position of using, improve the stability of measuring pump when operation.

As a preferred technical scheme of the utility model, still include the rotor plate, the rotor plate is equipped with four, and four through-holes of cylinder cap left surface and the left end fixed connection of four fixed columns are passed to four inboard axles in the rotor plate right flank, and the rotor plate that sets up can be convenient promote the fixed column and carry out the dismantlement and the installation of cylinder cap.

As a preferred technical scheme of the utility model, still include spacing hole and fixed pin, spacing hole is equipped with four, and four spacing holes are seted up respectively in the outside of four rotor plates right flank, the fixed pin is equipped with four, and four fixed pins correspond with four through-holes of four spacing holes and cylinder cap left and right sides respectively, and the rotor plate after the side of setting can be fixed rotating to spacing hole and fixed pin cooperation, prevents that the dead lever from taking place to rotate when the measuring pump uses.

The utility model has the advantages that: the utility model can be conveniently detached and replaced through the cooperation of the movable plunger, the screw rod and the fixed plunger, so that the contact part of the plunger and the liquid can be rapidly replaced when being damaged and corroded, thereby avoiding the troublesome operation of detaching the whole pump body, and the utility model is convenient to use, the cylinder cover can be rapidly detached and installed through the cooperation of the spring, the fixed rod, the support ring, the fixed groove, the fixed block and the fixed hole, so that the metering pump can be rapidly maintained and repaired, the bolt is not used for fixing, the situation that the bolt is difficult to detach is avoided, the utility model is convenient to use and maintain, the movable plunger can be detached and installed by using an external tool through the hexagonal groove, the sealing property of the joint of the cylinder cover and the plunger cylinder can be increased through the rubber ring, the cylinder body can be conveniently installed at the using position through the mounting hole on the support plate, and the stability of the cylinder body when in use is improved, the fixed rod can be conveniently pushed to rotate through the rotating plate to install and detach the cylinder cover, the rotating plate can be fixed through the fixed pin, the limiting hole and the through hole in the cylinder cover, and the rotating plate is prevented from rotating when the metering pump is used.

Drawings

FIG. 1 is a front view of the internal structure of the present invention;

fig. 2 is a schematic view of the back structure of the present invention.

In the figure: the device comprises a cylinder body 1, a plunger barrel 2, a plunger replacing unit 3, a movable plunger 31, a screw 32, a fixed plunger 33, a cylinder cover quick-release unit 4, a cylinder cover 41, a spring 42, a fixed rod 43, a support ring 44, a fixed groove 45, a fixed block 46, a fixed hole 47, a fixed ring 5, a hexagonal groove 6, a rubber ring 7, a support plate 8, a mounting hole 9, a rotating plate 10, a limiting hole 11 and a fixed pin 12.

Detailed Description

Example 1

As shown in fig. 1 to 2, the utility model discloses a novel precision plunger metering pump, which adopts the technical scheme that the precision plunger metering pump comprises a cylinder body 1, a plunger replacing unit 3 and a cylinder cover quick-detaching unit 4;

the cylinder body 1: a plunger barrel 2 is fixed in the middle of the left side face, the plunger barrel 2 is communicated with the inside of the cylinder body 1, and the side face of the right end of the plunger barrel 2 is fixedly connected with the inner side face of the fixing ring 5;

plunger replacing unit 3: the movable plunger 31 can be conveniently detached and replaced by matching the movable plunger 31, the screw rod 32 and the fixed plunger 33, so that the replacement of a contact part of the plunger and liquid can be quickly completed when the contact part is damaged and corroded, the troublesome operation of detaching the whole pump body for replacement is avoided, and the use is convenient;

cylinder cap quick detach unit 4: comprises a cylinder cover 41, a spring 42, fixing rods 43, support rings 44, fixing grooves 45, four fixing blocks 46 and four fixing holes 47, wherein the four fixing holes 47 are arranged on the left side surface of a fixing ring 5 at equal angles, the middle parts of the inner side surfaces of the four fixing holes 47 are respectively provided with the fixing blocks 46, the four fixing rods 43 are arranged, the left ends of the four fixing rods 43 are rotatably connected with the outer side of the right side surface of the cylinder cover 41, the side surfaces of the four fixing rods 43 are respectively provided with arc-shaped grooves corresponding to the four fixing blocks 46, the four fixing grooves 45 are respectively arranged on the side surface of the right end of the fixing rod 43, the four fixing grooves 45 are communicated with the arc-shaped grooves on the side surfaces of the four fixing rods 43, the four fixing grooves 45 correspond to the four fixing blocks 46, the support rings 44 are sleeved on the outer side of a plunger cylinder 2, and the left side surfaces of the support rings 44 are provided with through holes corresponding to the four fixing rods 43, spring 42 is equipped with four, four springs 42 cup joint the outside at four dead levers 43 respectively, and four springs 42's both ends respectively with the right flank of cylinder cap 41 and the left surface fixed connection of support ring 44, through spring 42, dead lever 43, support ring 44, fixed slot 45, fixed block 46 and fixed orifices cooperate 47 can be quick dismantle and install cylinder cap 41, make the measuring pump can maintain fast and maintain, and need not bolt fastening, avoid taking place the condition that the bolt is difficult to pull down, convenient to use and maintenance.

As an optimal technical scheme of the utility model, still include hexagonal recess 6 and rubber circle 7, hexagonal recess 6 is seted up at the middle part of activity plunger 31 left surface, and rubber circle 7 is established at the middle part of 41 right flanks of cylinder cap, and rubber circle 7 corresponds with the left surface of plunger section of thick bamboo 2, can make activity plunger 31 use outside instrument to dismantle and install through hexagonal recess 6, through the leakproofness of 7 multiplicable cylinder cap 41 of rubber circle and the 2 junctions of plunger section of thick bamboo.

As an optimal technical scheme of the utility model, still include backup pad 8 and mounting hole 9, backup pad 8 is the L type, and backup pad 8 is equipped with two, and two backup pads 8 are fixed respectively in the front and back both sides of 1 lower surface of cylinder body, and three mounting hole 9 has all been seted up to the upper surface of two backup pad 8 lower extremes, and the position of using is installed cylinder body 1 that can be convenient through mounting hole 9 in the backup pad 8, improves the stability when cylinder body 1 uses.

As an optimal technical scheme of the utility model, still include rotor plate 10, rotor plate 10 is equipped with four, four through-holes that cylinder cap 41 left surface was passed to the inboard axle in four rotor plate 10 right flanks and the left end fixed connection of four dead levers 43, through rotor plate 10 can be convenient promote dead lever 43 and rotate the installation and the dismantlement that carry out cylinder cap 41.

As a preferred technical scheme of the utility model, still include spacing hole 11 and fixed pin 12, spacing hole 11 is equipped with four, four spacing holes 11 are seted up respectively in the outside of four rotor plates 10 right flank, fixed pin 12 is equipped with four, four fixed pins 12 correspond with four through-holes of four spacing holes 11 and cylinder cap 41 left and right sides respectively, fixed pin 12, through-hole on spacing hole 11 and the cylinder cap 41 can fix rotor plates 10, prevent that the measuring pump from taking place to rotate rotor plates 10 when using.

The utility model discloses a theory of operation: when the cylinder cover is installed, the arc-shaped grooves on the four fixing rods 43 can be aligned with the four fixing blocks 46 in the four fixing holes 47, the right ends of the four fixing rods 43 are inserted into the four fixing holes 47, the cylinder cover 41 is pushed rightwards, the fixing grooves 45 are moved to be flush with the fixing blocks 46, the rotating plate 10 is pushed, the rotating plate 10 drives the fixing rods 43 to rotate, the fixing grooves 45 are rotated to the outer sides of the fixing blocks 46, the fixing rods 43 are fixed in the fixing holes 47, when the cylinder cover 41 is pushed rightwards, the support ring 45 can be in contact with the fixing ring 5, along with the rightward movement of the cylinder cover 41, can compress spring 42, fix the back in fixed orifices 47 at dead lever 43, spring 42's elasticity can make fixed block 46 block in fixed slot 56, prevent that dead lever 43 from taking place to rotate, when maintaining the dismantlement, can reverse promotion rotor plate 10, make dead lever 43 and fixed slot 45 rotate, make the arc wall on the dead lever 43 rotate to the outside of fixed block 46, can pull down dead lever 43 and cylinder cap 41, reverse rotation activity plunger 31 afterwards, it can to pull down the change with activity plunger 31.

The utility model discloses transmission structure in the cylinder body 1 is the inside transmission structure of current plunger measuring pump.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations without creative efforts are still within the scope of the present invention.

Claims

1. A novel precision plunger metering pump is characterized by comprising a cylinder body (1), a plunger replacing unit (3) and a cylinder cover quick-release unit (4);

cylinder (1): a plunger cylinder (2) is fixed in the middle of the left side face, the plunger cylinder (2) is communicated with the inside of the cylinder body (1), and the side face of the right end of the plunger cylinder (2) is fixedly connected with the inner side face of the fixing ring (5);

plunger replacement unit (3): the hydraulic cylinder comprises a movable plunger (31), a screw rod (32) and a fixed plunger (33), wherein the left end of the fixed plunger (33) is positioned inside the right end of a plunger cylinder (2), the right end of the fixed plunger (33) extends into a cylinder body (1), the middle of the left side surface of the fixed plunger (33) is fixedly connected with the right end of the screw rod (32), and the screw rod (32) is in threaded connection with a screw hole in the middle of the right side surface of the movable plunger (31);

cylinder cap quick detach unit (4): comprises a cylinder cover (41), a spring (42), four fixing rods (43), a support ring (44), fixing grooves (45), fixing blocks (46) and fixing holes (47), wherein the number of the fixing holes (47) is four, the four fixing holes (47) are arranged on the left side surface of a fixing ring (5) at equal angles, the fixing blocks (46) are arranged in the middle of the inner side surfaces of the four fixing holes (47), the number of the fixing rods (43) is four, the left ends of the four fixing rods (43) are rotatably connected with the outer side of the right side surface of the cylinder cover (41), arc-shaped grooves corresponding to the four fixing blocks (46) are formed in the side surfaces of the four fixing rods (43), the four fixing grooves (45) are respectively formed in the side surface of the right end of the fixing rod (43), the four fixing grooves (45) are communicated with the arc-shaped grooves in the side surfaces of the four fixing rods (43), and the four fixing grooves (45) correspond to the four fixing blocks (46), the support ring (44) is sleeved on the outer side of the plunger cylinder (2), through holes corresponding to the four fixing rods (43) are formed in the left side face of the support ring (44), the springs (42) are four, the four springs (42) are sleeved on the outer sides of the four fixing rods (43) respectively, and the two ends of the four springs (42) are fixedly connected with the right side face of the cylinder cover (41) and the left side face of the support ring (44) respectively.

2. The novel precision plunger metering pump of claim 1, wherein: still include hexagonal recess (6) and rubber ring (7), the middle part at activity plunger (31) left surface is seted up in hexagonal recess (6), the middle part at cylinder cap (41) right flank is established in rubber ring (7), and rubber ring (7) correspond with the left surface of plunger section of thick bamboo (2).

3. The novel precision plunger metering pump of claim 1, wherein: still include backup pad (8) and mounting hole (9), backup pad (8) are the L type, and backup pad (8) are equipped with two, and both sides around cylinder body (1) lower surface are fixed respectively in two backup pads (8), and three mounting hole (9) have all been seted up to the upper surface of two backup pad (8) lower extremes.

4. The novel precision plunger metering pump of claim 1, wherein: the novel cylinder cover is characterized by further comprising four rotating plates (10), wherein the four rotating plates (10) are arranged, and the shafts on the inner sides of the right side faces of the four rotating plates (10) penetrate through four through holes in the left side face of the cylinder cover (41) and are fixedly connected with the left ends of the four fixing rods (43).

5. The novel precision plunger metering pump of claim 4, wherein: still include spacing hole (11) and fixed pin (12), spacing hole (11) are equipped with four, and four outside at four rotor plates (10) right flank are seted up respectively in four spacing holes (11), fixed pin (12) are equipped with four, and four fixed pins (12) correspond with four through-holes of four spacing holes (11) and cylinder cap (41) left and right sides respectively.