CN113048041A

CN113048041A - Novel metering pump

Info

Publication number: CN113048041A
Application number: CN202110381164.3A
Authority: CN
Inventors: 吴昊
Original assignee: Nanjing Shunpai Information Technology Co ltd
Current assignee: Nanjing Shunpai Information Technology Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-06-29

Abstract

The invention discloses a novel metering pump, which comprises a driving structure, a piston rod, a transmission box body and a check valve group, wherein the piston rod is matched with the driving structure, the transmission box body is connected with the driving structure and the check valve group, the check valve group is communicated with the transmission box body, the piston rod comprises a turbine, a connecting rod and an eccentric wheel, the turbine is matched with the eccentric wheel, the connecting rod comprises an end socket provided with a spring, a diaphragm, a plurality of supporting rings and a rotating base, the end socket penetrates through the diaphragm, the supporting rings are abutted against the diaphragm, two ends of the spring are respectively abutted against the rotating base and the transmission box body, the rotating base is rotationally connected with the driving structure, the diaphragm is matched with the check valve group, on the basis of the prior art, the metering pump structure is improved, the supporting rings are additionally arranged, the supporting rings are abutted against the diaphragm through the supporting rings, the pressure which can be born, thereby effectively expanding the application range of the metering pump.

Description

Novel metering pump

Technical Field

The invention relates to the technical field of pump machinery, in particular to a novel metering pump.

Background

Metering pumps, particularly more precise metering pumps, have been widely used in perfusion apparatuses in the fields including pharmaceuticals, biological reagents, petrochemical industries, etc., with their high-precision control of fluid metering and relatively high corrosion resistance, and conventional metering pumps are generally controlled by a diaphragm, but in the prior art, when a metering pump is used for conveying a liquid having a relatively high solid content, the metering pump requires a relatively high pressure, and the diaphragm cannot be used for conveying the high-pressure liquid.

Disclosure of Invention

The invention provides a novel metering pump, aiming at solving the problem that a diaphragm cannot bear high-pressure liquid conveying when liquid with high solid content is conveyed in the prior art.

A novel metering pump comprises a driving structure, a piston rod, a transmission box body and a check valve group, wherein the piston rod and the driving structure are matched with each other and are arranged at the inner side of the transmission box body, the transmission box body is connected with the driving structure and the check valve group, the check valve group is arranged at the upper side and the lower side of one end of the transmission box body and is communicated with the transmission box body, the piston rod comprises a turbine, a connecting rod and an eccentric wheel, the turbine is matched with the eccentric wheel, the connecting rod is rotationally connected with the eccentric wheel, the connecting rod comprises a seal head provided with a spring, a diaphragm, a plurality of supporting rings and a rotating base, the rotating base is arranged at one side of the connecting rod close to the driving structure, the seal head penetrates through the diaphragm, the plurality of supporting rings are abutted against the diaphragm and are arranged between the seal head, the spring is arranged on the periphery side of the connecting rod, two ends of the spring are respectively abutted against the rotating base and the transmission box body, the rotating base is arranged at one end, far away from the diaphragm, of the connecting rod and is rotatably connected with the driving structure, and the diaphragm is arranged inside the transmission box body and is matched with the check valve group.

The rotary base comprises a rotary column and a connector, the rotary column is arranged in the connector and is rotatably connected with the connector, the connector is matched with the eccentric wheel, and the connector passes through the rotary column and the eccentric wheel is rotatably connected with the eccentric wheel.

The driving structure comprises a driving motor and a worm, the driving motor is arranged on the upper side of the transmission box body, the output end of the driving motor is matched with the worm, and the worm is matched with the turbine.

The eccentric wheel comprises a connecting wheel, an eccentric body and a matching protrusion, the two ends of the connecting wheel are respectively connected with the turbine and the eccentric body, and the matching protrusion is arranged on one side of the eccentric body and is rotatably connected with the rotating base.

The transmission box body comprises a driving box body, a piston pipe and a conveying box, the driving box body is arranged on the lower side of the driving structure and covers the turbine, the piston pipe is connected with the conveying box body and the driving box body, and the conveying box body is arranged between the check valve groups and matched with the diaphragm.

The piston pipe is provided with a limiting bulge and a movable channel, the movable channel is arranged along the horizontal direction and is in clearance fit with the connecting rod, and the limiting bulge is matched with the seal head and is arranged on one side, close to the conveying box, of the movable channel.

The invention has the beneficial effects that: on prior art's basis, improve the measuring pump structure, add the support ring, through support ring and diaphragm butt, and then effectively increase the diaphragm and carry the pressure that can bear when high solid content to the realization lets the diaphragm carry the purpose of the fluid of high solid content, and then has effectively expanded the application scope of measuring pump.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic sectional structural view of a novel metering pump of the present invention.

Fig. 2 is a schematic diagram of a shaft measuring structure of the novel metering pump.

Fig. 3 is a schematic diagram of a driving structure of the novel metering pump and a matching axial structure of a piston rod.

10-drive structure, 20-piston rod, 30-transmission box body, 40-check valve group, 11-drive motor, 12-scroll bar, 21-turbine, 22-connecting rod, 23-eccentric wheel, 31-drive box body, 32-piston tube, 33-conveying box, 41-valve cover, 42-valve core, 43-plug sleeve support, 221-end enclosure, 222-diaphragm, 223-support ring, 224-rotating base, 225-rotating column, 226-connector, 231-connecting wheel, 232-eccentric body, 233-matching projection, 321-limiting projection, 322-movable channel, 411-conveying channel, 421-mounting groove and 422-locking ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 3, the present invention provides a technical solution:

a novel metering pump comprises a driving structure 10, a piston rod 20, a transmission case 30 and a check valve group 40, wherein the piston rod 20 and the driving structure 10 are matched with each other and are arranged on the inner side of the transmission case 30, the transmission case 30 is connected with the driving structure 10 and the check valve group 40, the check valve group 40 is arranged on the upper side and the lower side of one end of the transmission case 30 and is communicated with the transmission case 30, the piston rod 20 comprises a turbine 21, a connecting rod 22 and an eccentric wheel 23, the turbine 21 is matched with the eccentric wheel 23, the connecting rod 22 is rotatably connected with the eccentric wheel 23, the connecting rod 22 comprises a seal head 221 provided with a spring, a diaphragm 222, a plurality of support rings 223 and a rotating base 224, the rotating base 224 is arranged on one side of the connecting rod 22 close to the driving structure 10, and the seal head 221 penetrates through the diaphragm 222, the support rings 223 are abutted against the diaphragm 222 and arranged between the end socket 221 and the diaphragm 222, the spring is arranged on the periphery side of the connecting rod 22, two ends of the spring are respectively abutted against the rotating base 224 and the transmission case 30, the rotating base 224 is arranged at one end of the connecting rod 22 far away from the diaphragm 222 and is rotatably connected with the driving structure 10, and the diaphragm 222 is arranged inside the transmission case 30 and is matched with the one-way valve group 40.

In this embodiment, the driving structure 10 drives the piston rod 20 to cooperate, the piston rod 20 performs a reciprocating motion by itself to achieve a quantitative fluid delivery, the transmission case 30 is used to protect each component, the check valve set 40 cooperates with the piston rod 20 to achieve a quantitative fluid delivery, the turbine 21 cooperates with the driving structure 10 to drive the eccentric wheel 23 to rotate, the connecting rod 22 cooperates with the eccentric wheel 23 to achieve a reciprocating motion, the end enclosure 221 cooperates with the diaphragm 222 to achieve a pressure change of the fluid in the transmission case 30 by the motion of the diaphragm 222 to achieve a quantitative fluid delivery, the spring is used to cooperate with the movement of the end enclosure 221, the support ring 223 cooperates with the diaphragm 222 to improve a pressure bearing force of the diaphragm 222, the rotating base 224 is used for connecting the connecting rod 22 and the eccentric wheel 23.

Further, the rotating base 224 comprises a rotating column 225 and a connecting head 226, the rotating column 225 is disposed inside the connecting head 226, and is rotatably connected to the connecting head 226, the connecting head 226 is engaged with the eccentric wheel 23, and the connecting head 226 passes through the rotating column 225 and the eccentric wheel 23.

In this embodiment, the rotating column 225 is used to engage with the connecting head 226, so that the connecting head 226 can engage with the piston rod 20 under the driving of the rotating column 225.

Further, the driving structure 10 includes a driving motor 11 and a worm 12, the driving motor 11 is disposed on the upper side of the transmission case 30, an output end of the driving motor 11 is matched with the worm 12, and the worm 12 is matched with the worm wheel 21.

In this embodiment, the output end of the driving motor 11 is used to drive the worm 12, and the worm 12 is used to drive the eccentric wheel 23, so as to drive the eccentric wheel 23 to rotate, thereby facilitating the subsequent operation.

Further, the eccentric wheel 23 includes a connecting wheel 231, an eccentric body 232 and a matching protrusion 233, two ends of the connecting wheel 231 are respectively connected to the turbine 21 and the eccentric body 232, and the matching protrusion 233 is disposed at one side of the eccentric body 232 and rotatably connected to the rotating base 224.

In this embodiment, the connecting wheel 231 is used to connect the eccentric body 232 and the turbine 21, and the engaging protrusion 233 is used to engage with the connecting rod 22, so that the connecting rod 22 can rotate along with the rotation of the engaging protrusion 233.

Further, the transmission case 30 includes a driving case 31, a piston tube 32 and a transmission case 33, the driving case 31 is disposed at the lower side of the driving structure 10 and covers the turbine 21, the piston tube 32 is connected to the transmission case 33 and the driving case 31, and the transmission case 33 is disposed between the check valve sets 40 and is matched with the diaphragm 222.

In the present embodiment, the driving case 31 is used for protecting the worm 12 and the worm wheel 21, the piston tube 32 is used for protecting the movement of the piston rod 20, and the delivery case 33 is used for matching with the check valve set 40.

Further, the piston tube 32 has a limiting protrusion 321 and a moving channel 322, the moving channel 322 is disposed along the horizontal direction and is in clearance fit with the connecting rod 22, the limiting protrusion 321 is engaged with the end socket 221, and is disposed on one side of the moving channel 322 close to the conveying box 33.

In this embodiment, the limiting protrusion 321 is used to limit the spring and thus the displacement path of the spring, and the moving channel 322 is used to match the piston rod 20, so that the piston rod 20 can reciprocate along the moving channel 322.

Further, the check valve sets 40 each include a valve cover 41 provided with a conveying passage 411, a valve core 42, and a plug bush bracket 43, the valve cover 41 is disposed on the upper and lower sides of the conveying box 33, the plug bush bracket 43 is disposed inside the valve cover 41 and fixedly connected to the valve cover 41, the valve core 42 is slidably connected to the plug bush bracket 43, and the conveying passage 411 penetrates through the valve cover 41 in the vertical direction.

In this embodiment, the valve cover 41 is configured to cooperate with the plug holder 43 to limit the position of the plug holder 43, and the valve core 42 cooperates with the valve cover 41 to enable the valve core 42 to reciprocate by using the pressure change of the fluid, so as to limit the flow rate, and the delivery passage 411 delivers the liquid.

Further, the valve body 42 has a plurality of mounting grooves 421 and a locking ring 422, the plurality of mounting grooves 421 are provided on the outer circumferential side of the valve body 42 and are engaged with the sleeve holder 43, and the locking ring 422 is provided on the outer circumferential side of the valve body 42 and is engaged with the sleeve holder 43.

In this embodiment, the mounting groove 421 is adapted to fit the sleeve holder 43, and the locking ring 422 is adapted to limit the movement of the valve core 42 in the sleeve holder 43, so as to avoid the valve core 42 from moving excessively to affect the flow rate limitation.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A novel metering pump is characterized by comprising a driving structure, a piston rod, a transmission case body and a check valve group, wherein the piston rod and the driving structure are matched with each other and are arranged at the inner side of the transmission case body, the transmission case body is connected with the driving structure and the check valve group, the check valve group is arranged at the upper side and the lower side of one end of the transmission case body and is communicated with the transmission case body, the piston rod comprises a turbine, a connecting rod and an eccentric wheel, the turbine is matched with the eccentric wheel, the connecting rod is rotationally connected with the eccentric wheel, the connecting rod comprises a seal head provided with a spring, a diaphragm, a plurality of supporting rings and a rotating base, the rotating base is arranged at one side of the connecting rod close to the driving structure, the seal head penetrates through the diaphragm, the plurality of supporting rings are abutted to the diaphragm and are arranged between the seal head and, the spring is arranged on the periphery side of the connecting rod, two ends of the spring are respectively abutted against the rotating base and the transmission box body, the rotating base is arranged at one end, far away from the diaphragm, of the connecting rod and is rotatably connected with the driving structure, and the diaphragm is arranged inside the transmission box body and is matched with the check valve group.

2. The novel metering pump as claimed in claim 1, wherein the rotating base comprises a rotating column and a connector, the rotating column is disposed inside the connector and is rotatably connected with the connector, the connector is engaged with the eccentric wheel, and the connector is rotatably connected with the eccentric wheel through the rotating column.

3. The novel metering pump as claimed in claim 2, wherein the driving structure comprises a driving motor and a worm, the driving motor is disposed on the upper side of the transmission case, the output end of the driving motor is engaged with the worm, and the worm is engaged with the worm.

4. The novel metering pump as claimed in claim 1, wherein the eccentric wheel comprises a connecting wheel, an eccentric body and a matching protrusion, two ends of the connecting wheel are respectively connected with the turbine wheel and the eccentric body, and the matching protrusion is arranged on one side of the eccentric body and is rotatably connected with the rotating base.

5. The new metering pump as set forth in claim 1, wherein said drive case body includes a drive case body, a piston tube and a delivery case, said drive case body is disposed on the lower side of said drive structure and covers said turbine arrangement, said piston tube connects said delivery case and said drive case body, said delivery case is disposed between said check valve sets and cooperates with said diaphragm.

6. The novel metering pump of claim 5, wherein the piston tube is provided with a limiting protrusion and a movable passage, the movable passage is arranged along the horizontal direction and is in clearance fit with the connecting rod, and the limiting protrusion is engaged with the end socket and is arranged on one side of the movable passage close to the conveying box.