CN215486550U

CN215486550U - Metering pump capable of being cleaned on line

Info

Publication number: CN215486550U
Application number: CN202121293071.7U
Authority: CN
Inventors: 袁书清
Original assignee: Wuxi Super Precise Machinery Science & Technology Co ltd
Current assignee: Wuxi Super Precise Machinery Science & Technology Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-11
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a metering pump capable of being cleaned on line, wherein a pump sleeve is sleeved outside a pump body, a pump rod is inserted into a central hole of the pump body, a liquid inlet hole, a liquid outlet hole and a cleaning liquid hole which are communicated are formed in the circumferential wall surface of the pump body, a liquid inlet nozzle, a liquid outlet nozzle and a cleaning liquid nozzle are correspondingly arranged on the pump sleeve, a liquid guide groove is formed in the inner end, inserted into the pump body, of the pump rod, a central hole of the pump body is sequentially provided with a first straight hole part, a conical hole part and a second straight hole part from front to back, the inner diameter of the first straight hole part is matched with the outer diameter of the pump rod, and a circulation cavity is formed between the outer peripheral surface of the pump rod and the inner peripheral surface of the conical hole part. The circulation cavity of the utility model forms a liquid flowing space with a larger gap between the inner wall surface of the pump body and the peripheral surface of the pump rod, and liquid flows into the circulation cavity and can uniformly cover each part of the peripheral surface of the pump rod to thoroughly clean each part of the peripheral surface of the pump rod, thereby avoiding the filling liquid remaining in the pump rod to influence the quality of the next filling product.

Description

Metering pump capable of being cleaned on line

Technical Field

The utility model relates to the technical field of pumps, in particular to a metering pump capable of being cleaned on line.

Background

The metering pump has high precision for controlling fluid metering and strong corrosion resistance, and is widely applied to filling equipment in the fields of pharmacy, biological reagents and the like. In order to avoid the pollution or the influence on the quality of the next filling product caused by the residual filling liquid in the working cavity and the pump rod inside the metering pump, the metering pump needs to be thoroughly cleaned after the filling is finished every time.

In the conventional metering pump capable of being cleaned on line, during cleaning, a cleaning agent enters the interior of a metering pump body from a liquid inlet, is discharged from a liquid medicine outlet and a water outlet, and cleans the inner wall of a hole, the periphery of the rod and the inlet and the outlet; after entering the metering pump body from the liquid inlet, a cleaning agent flows along a gap between the inner wall of the pump body hole and the outer cylindrical surface of the pump rod to clean the inner wall of the pump body hole and the periphery of the pump rod, the gap between the inner wall of the pump body hole and the outer cylindrical surface of the pump rod is small, the flowing cleaning agent is difficult to uniformly distribute on the outer cylindrical surface of the pump rod and clean every place, and therefore, some places on the outer cylindrical surface of the pump rod can remain filling liquid due to the fact that the places are not cleaned; in addition, the flow of the cleaning agent flowing in the narrow gap is small, so that a long time is required for cleaning, and the cleaning efficiency is low; and because the flow is less, even if the pump rod is cleaned for a long time, particles which are strongly adhered to the outer cylindrical surface of the pump rod can be remained and cannot be completely cleaned, and the quality of the next filling product is influenced.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the defects of the conventional metering pump capable of being cleaned on line, and provides the metering pump which is reasonable in structure and capable of being cleaned on line, so that a pump rod is thoroughly cleaned, and residual filling liquid is avoided.

The technical scheme adopted by the utility model is as follows:

the utility model provides a can online cleaning's measuring pump, the pump body overcoat is established the pump jacket, the downthehole cartridge pump rod in center of the pump body, set up the feed liquor hole that link up, go out liquid hole and cleaning solution hole on the circumference wall of the pump body, correspond on the pump jacket and set up feed liquor mouth, go out liquid mouth, cleaning solution mouth, the liquid guide groove has been seted up to the inner that the pump rod inserted the pump body, the centre bore of the pump body is first straight hole portion, taper hole portion, second straight hole portion in proper order after to in the past, the internal diameter of first straight hole portion and the external diameter phase-match of pump rod, form the circulation chamber between pump rod outer peripheral face and the taper hole portion inner peripheral surface.

As a further improvement of the above technical solution:

the cleaning liquid hole is communicated with the part with the largest inner diameter of the taper hole part.

The taper hole part comprises a front taper hole with a small front part and a large rear part and a rear taper hole with a large front part and a small rear part, the large diameter end of the front taper hole is connected with the large diameter end of the rear taper hole, the small diameter end of the front taper hole is connected with the first straight hole part, and the small diameter end of the rear taper hole is connected with the second straight hole part.

The cleaning liquid hole is communicated with the connecting part of the front taper hole and the rear taper hole of the taper hole part.

The first straight hole part and the second straight hole part have inner diameters equivalent to each other.

An annular groove is formed in the inner peripheral surface of the second straight hole portion, and a second sealing ring is arranged in the annular groove.

The liquid inlet nozzle, the liquid outlet nozzle and the cleaning liquid nozzle are integrally processed and formed on the pump sleeve.

The pump body and the pump sleeve are fixedly provided with a bottom cover at the other end opposite to the pump rod insertion hole, a ceramic separation blade is arranged in the bottom cover, and a first sealing ring is arranged on the separation blade.

The liquid inlet hole and the liquid outlet hole are positioned on two opposite sides of the pump body, and the central shafts of the liquid inlet hole and the liquid outlet hole are positioned on the same vertical plane; the cleaning liquid hole is positioned behind the liquid inlet hole and at the same side as the liquid inlet hole.

The outer end part of the pump rod is sleeved with a rod handle; the pump body and the pump rod are made of ceramic materials, and the pump sleeve is made of non-ceramic metal or plastic materials.

The utility model has the following beneficial effects:

the circulation cavity of the utility model forms a liquid flowing space with a larger gap between the inner wall surface of the pump body and the peripheral surface of the pump rod, and liquid flows into the circulation cavity and can uniformly cover each part of the peripheral surface of the pump rod to thoroughly clean each part of the peripheral surface of the pump rod, thereby avoiding the filling liquid remaining in the pump rod from influencing the quality of the next filling product; and moreover, the conical circulation cavity increases the liquid flowing space, the liquid flow and the flow velocity are correspondingly increased, the cleaning time required to be consumed is correspondingly reduced, the cleaning efficiency is improved, the liquid flow and the flow velocity are increased, and the pump rod surface particles can be thoroughly cleaned.

The cleaning liquid hole is positioned at the position with the largest inner diameter of the taper hole part, and the taper surface of the taper hole part plays a role in guiding the cleaning liquid to flow to the cleaning liquid hole, so that the cleaning liquid hole is more beneficial to flowing of the cleaning liquid, the cleaning efficiency is improved, the cleaning time is reduced, and the cleaning liquid hole is also beneficial to thoroughly discharging the cleaning liquid.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

In the figure: 1. a pump body; 11. a central bore; 111. a first straight hole portion; 112. a taper hole portion; 113. a second straight hole portion; 12. a liquid inlet hole; 13. a liquid outlet hole; 14. cleaning fluid holes; 2. a pump housing; 21. a liquid inlet nozzle; 22. a liquid outlet nozzle; 23. a cleaning liquid nozzle; 3. a pump rod; 31. a liquid guide groove; 32. a stem; 4. a bottom cover; 5. a baffle plate; 6. a first seal ring; 7. a second seal ring; 8. a flow-through chamber.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, a cylindrical pump sleeve 2 is sleeved on the periphery of a cylindrical pump body 1, a through central hole 11 is formed in the center of the pump body 1, a pump rod 3 is inserted in the central hole 11, and the pump rod 3 can slide in the central hole 11 and also can rotate around the central line of the pump rod 3; the pump body 1 and the pump sleeve 2 are fixed with a bottom cover 4 at another end opposite to the insertion hole of the pump rod 3, a blind hole is formed in one end, facing the pump body 1, of the bottom cover 4, a ceramic separation blade 5 is arranged in the blind hole, the separation blade 5 is provided with a step surface, a first sealing ring 6 is arranged on the step surface, the first sealing ring 6 is abutted against the end surface of the pump body 1 to realize sealing, and liquid leakage is prevented. The pump body 1 and the pump rod 3 are made of ceramic materials, and the pump sleeve 2 is made of non-ceramic metal or plastic materials.

As shown in fig. 1, the central hole 11 of the pump body 1 is sequentially provided with a first straight hole part 111, a taper hole part 112 and a second straight hole part 113 from front to back, the inner diameters of the first straight hole part 111 and the second straight hole part 113 are equivalent, the taper hole part 112 comprises a front taper hole with a small front and a large back and a rear taper hole with a large front and a small back, the large diameter end of the front taper hole is connected with the large diameter end of the rear taper hole, the small diameter end of the front taper hole is connected with the first straight hole part 111, and the small diameter end of the rear taper hole is connected with the second straight hole part 113; a ring of annular grooves are formed in the inner peripheral surface of the second straight hole portion 113, and second sealing rings 7 are arranged in the annular grooves. The inner diameters of the first straight hole part 111 and the second straight hole part 113 are matched with the outer diameter of the pump rod 3, after the pump rod 3 is inserted into the central hole 11, the second sealing ring 7 abuts against the surface of the pump rod 3 to realize sealing, a circulation cavity 8 is formed between the outer peripheral surface of the pump rod 3 and the inner peripheral surface of the conical hole part 112, a liquid flowing space with a large gap is formed between the inner wall surface of the pump body 1 and the outer peripheral surface of the pump rod 3 of the circulation cavity 8, liquid flows into the circulation cavity 8 and can uniformly cover each part of the outer peripheral surface of the pump rod 3, each part of the outer peripheral surface of the pump rod 3 is thoroughly cleaned, and filling liquid is prevented from remaining in the pump rod 3 to influence the quality of a next filling product; moreover, the conical circulation cavity 8 increases the liquid flowing space, the liquid flow and the flow velocity are correspondingly increased, the cleaning time required to be consumed is correspondingly reduced, the cleaning efficiency is improved, the liquid flow and the flow velocity are increased, and the pump rod 3 is more beneficial to thoroughly cleaning particles on the surface. Two opposite sides of the circumferential wall surface of the pump body 1 are respectively provided with a liquid inlet hole 12 and a liquid outlet hole 13 which are communicated along the radial direction, the central axes of the liquid inlet hole 12 and the liquid outlet hole 13 are positioned on the same vertical plane, and the liquid inlet hole 12 and the liquid outlet hole 13 are communicated with a first straight hole part 111; the circumferential wall surface of the pump body 1 is located behind the liquid inlet hole 12 and is also provided with a cleaning liquid hole 14 along the radial direction on the same side as the liquid inlet hole 12, the cleaning liquid hole 14 is communicated with the taper hole part 112, the cleaning liquid hole 14 is communicated with the connecting part of the front taper hole and the rear taper hole of the taper hole part 112, namely, the cleaning liquid hole 14 is communicated with the part with the largest inner diameter of the taper hole part 112, and the taper surface of the taper hole part 112 plays a role in guiding the cleaning liquid to flow to the cleaning liquid hole 14, so that the cleaning liquid is more beneficial to flowing of the cleaning liquid, the cleaning efficiency is improved, the cleaning time is reduced, and the cleaning liquid is also beneficial to being thoroughly discharged.

As shown in fig. 1, the pump sleeve 2 is provided with a liquid inlet nozzle 21, a liquid outlet nozzle 22 and a cleaning liquid nozzle 23 corresponding to the liquid inlet hole 12, the liquid outlet hole 13 and the cleaning liquid hole 14, and the liquid inlet nozzle 21, the liquid outlet nozzle 22 and the cleaning liquid nozzle 23 are integrally formed on the pump sleeve 2, so that the assembly procedure is saved, and the assembly cost is saved.

As shown in FIG. 1, a liquid guiding groove 31 is opened on the outer peripheral surface of the inner end of the pump rod 3 inserted into the central hole 11 of the pump body 1, and a rod handle 32 is sleeved on the outer end part of the pump rod 3.

When the filling operation is carried out, firstly, the liquid guide groove 31 of the pump rod 3 is aligned to the liquid inlet nozzle 21, the driving device drives the pump rod 3 to be pulled outwards through the transmission device, and liquid in the material barrel is input into the central hole 11 of the pump body 1 through the liquid inlet nozzle 21, the liquid inlet hole 12 and the liquid guide groove 31 to complete the liquid suction process; the pump rod 3 is rotated by 180 degrees, the liquid guide groove 31 of the pump rod 3 is aligned to the liquid outlet 22, the driving device drives the pump rod 3 to push inwards through the transmission device, and the liquid in the central hole 11 is output to the corresponding filling bottle through the liquid outlet hole 13 and the liquid outlet 22, so that the liquid outlet process is completed.

When the present invention is cleaned, the cleaning liquid is fed from the liquid inlet nozzle 21 into the center hole 11, flows on the inner peripheral surface of the pump body 1 and on the outer peripheral surface of the pump rod 3, and is discharged from the cleaning liquid nozzle 23 after the inner peripheral surface of the pump body 1 and the outer peripheral surface of the pump rod 3 are thoroughly cleaned.

The foregoing description is illustrative of the present invention and is not to be construed as limiting thereof, as the utility model may be modified in any manner without departing from the spirit thereof.

Claims

1. The utility model provides a but online cleaning's measuring pump, pump body (1) overcoat is established pump jacket (2), cartridge pump rod (3) in centre bore (11) of the pump body (1), set up feed liquor hole (12) that link up on the circumference wall of the pump body (1), go out liquid hole (13) and cleaning fluid hole (14), it sets up feed liquor mouth (21) to correspond on pump jacket (2), go out liquid mouth (22), cleaning fluid mouth (23), pump rod (3) insert the inner of the pump body (1) and seted up liquid guide groove (31), its characterized in that: a central hole (11) of the pump body (1) is sequentially provided with a first straight hole part (111), a conical hole part (112) and a second straight hole part (113) from front to back, the inner diameter of the first straight hole part (111) is matched with the outer diameter of the pump rod (3), and a circulation cavity (8) is formed between the outer circumferential surface of the pump rod (3) and the inner circumferential surface of the conical hole part (112).

2. Metering pump which can be cleaned on-line according to claim 1, characterized in that: the cleaning liquid hole (14) is communicated with the part with the largest inner diameter of the taper hole part (112).

3. Metering pump which can be cleaned on-line according to claim 1, characterized in that: the taper hole part (112) comprises a front taper hole with a small front part and a large rear part and a rear taper hole with a large front part and a small rear part, the large diameter end of the front taper hole is connected with the large diameter end of the rear taper hole, the small diameter end of the front taper hole is connected with the first straight hole part (111), and the small diameter end of the rear taper hole is connected with the second straight hole part (113).

4. The metering pump which can be cleaned on line according to claim 3, wherein: the cleaning liquid hole (14) is communicated with the connecting part of the front taper hole and the rear taper hole of the taper hole part (112).

5. Metering pump which can be cleaned on-line according to claim 1, characterized in that: the first straight hole (111) and the second straight hole (113) have inner diameters corresponding to each other.

6. Metering pump which can be cleaned on-line according to claim 1, characterized in that: an annular groove is formed in the inner peripheral surface of the second straight hole part (113), and a second sealing ring (7) is arranged in the annular groove.

7. Metering pump which can be cleaned on-line according to claim 1, characterized in that: the liquid inlet nozzle (21), the liquid outlet nozzle (22) and the cleaning liquid nozzle (23) are integrally formed on the pump sleeve (2).

8. Metering pump which can be cleaned on-line according to claim 1, characterized in that: a bottom cover (4) is fixed on the other end of the pump body (1) and the pump sleeve (2) opposite to the insertion opening of the pump rod (3), a ceramic blocking piece (5) is arranged in the bottom cover (4), and a first sealing ring (6) is arranged on the blocking piece (5).

9. Metering pump which can be cleaned on-line according to claim 1, characterized in that: the liquid inlet hole (12) and the liquid outlet hole (13) are positioned at two opposite sides of the pump body (1), and the central axes of the liquid inlet hole (12) and the liquid outlet hole (13) are positioned on the same vertical plane; the cleaning liquid hole (14) is positioned at the rear part of the liquid inlet hole (12) and at the same side of the liquid inlet hole (12).

10. Metering pump which can be cleaned on-line according to claim 1, characterized in that: a rod handle (32) is sleeved at the outer end part of the pump rod (3); the pump body (1) and the pump rod (3) are made of ceramic materials, and the pump sleeve (2) is made of non-ceramic metal or plastic materials.