CN215672576U

CN215672576U - Plunger pump is used in soft capsule production

Info

Publication number: CN215672576U
Application number: CN202122126562.9U
Authority: CN
Inventors: 杨松; 李雄柏; 张富; 林安弟; 夏朝洋
Original assignee: ZHEJIANG JIANGNAN PHARMACEUTICAL MACHINERY CO Ltd
Current assignee: ZHEJIANG JIANGNAN PHARMACEUTICAL MACHINERY CO Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-28
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a plunger pump for producing soft capsules, wherein a body is provided with a cavity, a runner, a liquid inlet and a liquid outlet which can be opened and closed, the liquid inlet is communicated with the bottom end of the cavity, one end of the runner is communicated with the liquid outlet, a relay block is arranged on the body, the relay block is provided with a relay cavity and a through hole, the other end of the runner is communicated with the opening side of the cavity through the relay cavity, and the through hole is concentric with the cavity; a pump cover is arranged on the outer side of the relay block, the plunger rod comprises a first rod part, a flange and a second rod part which are connected into a whole, the second rod part penetrates through the pump cover and the through hole, the front end of the second rod part extends into the cavity, and a gap L is formed between the second rod part and the cavity; a sealing assembly is arranged between the pump cover and the second rod part of the plunger rod; the first rod part is arranged in the clamping groove of the push block, the outer end of the first rod part is provided with a fine adjustment component, the fine adjustment component is used for adjusting the distance between the adjacent surfaces of the flange and the push block, and the push block is connected with a power source.

Description

Plunger pump is used in soft capsule production

Technical Field

The utility model relates to the technical field of soft capsule production machinery, in particular to a plunger pump for producing soft capsules.

Background

The soft capsule is a traditional formulation, has wide application in medicine, the content is generally oily functional substance or fluid substances such as functional substance solution, etc., because the requirement of the loading precision is very high, the plunger pump is generally adopted to measure in the industry, the existing plunger pump for measuring the soft capsule mainly comprises a pump body, a liquid inlet and a liquid outlet which are opened and closed through a reversing plate are arranged on the pump body, the liquid inlet is communicated with a hopper, the liquid outlet is communicated with a medicine injection pipe, a measuring cavity is arranged in the pump body, the plunger is in sealing fit with the measuring cavity to suck and extrude the material, the plunger and the measuring cavity are directly rubbed, liquid leakage is easy to occur after abrasion, and the measuring precision is reduced, because a plurality of soft capsules are produced in parallel during production, therefore, the plunger pumps are also arranged in parallel, namely one plunger pump corresponds to one capsule, meanwhile, the pump body is usually of an integrated structure for convenient installation, and the same push block is adopted to push and pull each plunger so as to realize synchronous filling.

Disclosure of Invention

The plunger pump for producing the soft capsules is provided, a gap is formed between the plunger and the metering cavity, abrasion is avoided, the service life is long, the metering precision is finely adjusted by the fine adjustment component, long-term stability of the metering precision is favorably kept, and the problems in the prior art are solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a plunger pump for soft capsule production comprises a body 1 and a plunger rod 6, wherein a cavity 102, a flow channel 104, a liquid inlet 101 and a liquid outlet 103 which can be opened and closed are arranged on the body 1, the liquid inlet 101 is communicated with the bottom end of the cavity 102, the cavity 102 is opened at one side of the body 1, one end of the flow channel 104 is communicated with the liquid outlet 103, a relay block 2 is arranged on the body 1 and positioned at the opening side of the cavity 102, a relay cavity 201 and a through hole 202 are arranged on the relay block 2, the other end of the flow channel 104 is communicated with the opening side of the cavity 102 through the relay cavity 201, and the through hole 202 is concentric with the cavity 102; a pump cover 3 is arranged on the outer side of the relay block 2, the plunger rod 6 comprises a first rod part 603, a flange 602 and a second rod part 604 which are connected into a whole, the second rod part 604 penetrates through the pump cover 3 and the through hole 202, the front end of the second rod part 604 extends into the cavity 102, and a gap L is formed between the second rod part 604 and the cavity 102; a sealing assembly 7 is arranged between the pump cover 3 and the second rod part 604 of the plunger rod 6; the first rod part 603 is installed in the clamping groove 401 of the push block 4, the outer end of the first rod part 603 is provided with a fine adjustment component 5, the fine adjustment component 5 is used for adjusting the distance between the adjacent surfaces of the flange 602 and the push block 4, and the push block 4 is connected with a power source.

Further, the seal assembly 7 includes:

the sealing sleeve 704 is arranged in the pump cover 3 and sleeved on the second rod part 604, and one end of the sealing sleeve 704 is abutted against the outer side surface of the relay block 2; the periphery of the sealing sleeve 704 and two ends of an inner hole are provided with sealing rings 705;

the elastic gasket 703 is provided with a plurality of elastic gaskets 703 which are serially connected and arranged in the pump cover 3 and sleeved on the second rod part 604, and the end surface of the elastic gasket 703 at the rightmost side is in butt fit with the other end of the sealing sleeve 704;

the hollow nut 701 is sleeved on the second rod part 604 and screwed on the pump cover 3;

and the pressing sleeve 702 is sleeved on the second rod part 604, one end of the pressing sleeve 702 is abutted against the hollow nut 701, and the other end of the pressing sleeve 702 is abutted against the end face of the elastic washer 703 at the leftmost side.

Further, the fine adjustment assembly 5 includes:

a threaded hole 601 axially provided in the first rod portion 603;

one end of the screw 501 is screwed into the threaded hole 601, and the other end of the screw extends out of one side of the push block 4 far away from the flange 602;

the second nut 503 is screwed on the screw 501 and is close to the push block 4;

and a first nut 502 screwed on the screw 501 and located outside the second nut 503.

Further, the clearance L is 0.5-1.5 mm.

Further, the elastic washer 703 and the sealing sleeve 704 are made of teflon materials.

The working principle and the beneficial effects of the utility model are as follows: when the plunger pump for producing the soft capsules provided by the utility model works, the pushing block is driven by a power source to push and pull the plunger rod to complete the metering and filling of materials, when the pushing block pushes the plunger rod to go deep into the cavity, the liquid inlet is closed, the materials in the cavity enter the relay cavity along the gap L under the pushing of the plunger rod and are discharged from the liquid outlet through the flow channel to complete the metering and filling of the materials, when the pushing block pulls the plunger rod to exit from the cavity, the liquid outlet is closed, the volume in the cavity is increased at the moment, negative pressure is generated to suck the materials from the liquid inlet, and the blank is circulated to complete the metering of the materials; the plunger rod is not in contact with the cavity, so that the abrasion is avoided, and the service life is long; the metering precision is finely adjusted by arranging the fine adjustment component, so that the long-term stability of the metering precision is favorably kept; through, the seal assembly who sets up, adjustable sealing pressure, and adopt polytetrafluoroethylene material, the wearability is good, and the leakproofness is good.

Drawings

Fig. 1 is a cut-away schematic view of the structure of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

FIG. 3 is a schematic view of a combination structure of a plurality of plunger pumps for soft capsule production.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a plunger pump for soft capsule production comprises a body 1 and a plunger rod 6, wherein the body 1 is provided with a cavity 102, a flow channel 104, and a liquid inlet 101 and a liquid outlet 103 which can be opened and closed, the liquid inlet 101 is communicated with the bottom end of the cavity 102, the cavity 102 is opened at one side of the body 1, one end of the flow channel 104 is communicated with the liquid outlet 103, a relay block 2 is arranged on the body 1 and positioned at the opening side of the cavity 102, the relay block 2 is provided with a relay cavity 201 and a through hole 202, the other end of the flow channel 104 is communicated with the opening side of the cavity 102 through the relay cavity 201, and the through hole 202 is concentric with the cavity 102; the outer side of the relay block 2 is provided with a pump cover 3, the plunger rod 6 comprises a first rod part 603, a flange 602 and a second rod part 604 which are connected into a whole, the second rod part 604 penetrates through the pump cover 3 and the through hole 202, the front end of the second rod part 604 extends into the cavity 102, and a gap L is formed between the second rod part 604 and the cavity 102; a sealing assembly 7 is arranged between the pump cover 3 and the second rod part 604 of the plunger rod 6; the first rod part 603 is installed in the slot 401 of the push block 4, the outer end of the first rod part 603 is provided with a fine adjustment component 5, the fine adjustment component 5 is used for adjusting the distance between the adjacent surfaces of the flange 602 and the push block 4, and the push block 4 is connected with a power source.

Preferably, the sealing assembly 7 comprises: the sealing sleeve 704 is arranged in the pump cover 3 and sleeved on the second rod part 604, and one end of the sealing sleeve 704 is abutted against the outer side surface of the relay block 2; sealing rings 705 are arranged on the periphery of the sealing sleeve 704 and at two ends of the inner hole; the elastic washer 703 is provided with a plurality of elastic washers 703 which are serially connected and arranged in the pump cover 3 and sleeved on the second rod part 604, and the end surface of the elastic washer 703 at the rightmost side is in butt fit with the other end of the sealing sleeve 704; the hollow nut 701 is sleeved on the second rod part 604 and screwed on the pump cover 3; the pressing sleeve 702 is sleeved on the second rod part 604, one end of the pressing sleeve 702 is abutted with the hollow nut 701, and the other end of the pressing sleeve 702 is abutted with the end face of the elastic washer 703 at the leftmost side; through the arrangement, pressure can be applied to or reduced from the pressing sleeve 702 by rotating the hollow nut 701, the pressing sleeve 702 transmits axial pressure to the elastic gasket 703 and the sealing sleeve 704, the sealing sleeve 704 axially extrudes the sealing ring 705 to enable the sealing ring 705 to elastically deform along the radial direction to complete sealing, the pressure can be conveniently adjusted through the hollow nut 7, and then the matching of the sealing performance and the smooth movement performance of the plunger rod 6 can be conveniently adjusted.

Preferably, the fine adjustment assembly 5 comprises: the nut comprises a threaded hole 601, a screw 501, a second nut 503 and a first nut 502, wherein the threaded hole 601 is axially arranged on a first rod part 603; one end of the screw 501 is screwed into the threaded hole 601, and the other end of the screw extends out of one side of the push block 4 far away from the flange 602; a second nut 503 is screwed on the screw 501 close to the push block 4; the first nut 502 is screwed on the screw 501 and positioned outside the second nut 503, through the arrangement, the actual stroke of the plunger rod 6 can be adjusted finely conveniently, when the first nut 502 is loosened and the second nut 503 is screwed outwards, the distance between the second nut 503 and the flange 602 is increased, namely the distance between the flange 602 and the adjacent surface of the push block 4 is increased, at the moment, the actual stroke of the plunger rod 6 is reduced under the condition that the stroke of the push block 4 is not changed, so that the quality of the pumped material is reduced, otherwise, the actual stroke of the plunger rod 6 is increased, and when the distance is zero, the stroke of the plunger rod 6 is consistent with the stroke of the push block 4; after the adjustment is completed, the first nut 502 and the second nut 503 are tightly combined to complete locking, so that the stability is ensured; thus, under the parallel structure of a plurality of plunger pumps as shown in fig. 3, the push block 4 is the same, so that the actual stroke of each plunger rod 6 can be finely adjusted conveniently, and the metering accuracy of each plunger pump is consistent.

Preferably, the clearance L is 0.5-1.5 mm.

Preferably, elastomeric gasket 703 and gland 704 are made of polytetrafluoroethylene material.

When the plunger pump for producing the soft capsules provided by the utility model works, the pushing block 4 pushes and pulls the plunger rod 6 under the driving of the power source to finish the metering and filling of materials, when the pushing block 4 pushes the plunger rod 6 to go deep into the cavity, the liquid inlet 101 is closed, the materials in the cavity 102 enter the relay cavity 201 along the gap L under the pushing of the plunger rod 6 and are discharged from the liquid outlet 103 through the flow channel 104 to finish the metering and filling of the materials, when the pushing block 4 pulls the plunger rod 6 to exit the cavity 102, the liquid outlet 103 is closed, the volume in the cavity 102 is increased at the moment, negative pressure is generated to suck the materials from the liquid inlet 101, and the metering of the materials is finished by blank circulation; the plunger rod 6 is not in contact with the cavity 102, so that the abrasion is avoided, and the service life is long; the metering precision is finely adjusted by arranging the fine adjustment component 5, so that the long-term stability of the metering precision is favorably kept; through, the seal assembly 7 that sets up, adjustable sealing pressure, and adopt polytetrafluoroethylene material, the wearability is good, and the leakproofness is good.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "one end", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a plunger pump for soft capsule production, includes body (1), plunger rod (6), be equipped with cavity (102), runner (104) and inlet (101) and liquid outlet (103) that can open and close on body (1), inlet (101) with cavity (102) bottom intercommunication, cavity (102) open in body (1) one side, runner (104) one end with liquid outlet (103) intercommunication, its characterized in that: a relay block (2) is arranged on the body (1) and located on the opening side of the cavity (102), a relay cavity (201) and a through hole (202) are formed in the relay block (2), the other end of the runner (104) is communicated with the opening side of the cavity (102) through the relay cavity (201), and the through hole (202) is concentric with the cavity (102); the outer side of the relay block (2) is provided with a pump cover (3), the plunger rod (6) comprises a first rod part (603), a flange (602) and a second rod part (604) which are connected into a whole, the second rod part (604) penetrates through the pump cover (3) and the through hole (202), the front end of the second rod part (604) extends into the cavity (102), and a gap L is formed between the second rod part (604) and the cavity (102); a sealing assembly (7) is arranged between the pump cover (3) and the second rod part (604) of the plunger rod (6); the first rod part (603) is arranged in a clamping groove (401) of the push block (4), a fine adjustment component (5) is arranged at the outer end of the first rod part (603), the fine adjustment component (5) is used for adjusting the distance between the flange (602) and the adjacent surface of the push block (4), and the push block (4) is connected with a power source.

2. Plunger pump for the production of soft capsules according to claim 1, characterized in that said sealing assembly (7) comprises:

the sealing sleeve (704) is arranged in the pump cover (3) and sleeved on the second rod part (604), and one end of the sealing sleeve (704) is abutted against the outer side surface of the relay block (2); the periphery of the sealing sleeve (704) and two ends of an inner hole are provided with sealing rings (705);

the elastic gasket (703) is provided with a plurality of elastic gaskets (703) which are serially connected in the pump cover (3) and sleeved on the second rod part (604), and the end face of the elastic gasket (703) at the rightmost side is in butt fit with the other end of the sealing sleeve (704);

the hollow nut (701) is sleeved on the second rod part (604) and screwed on the pump cover (3);

and the pressing sleeve (702) is sleeved on the second rod part (604), one end of the pressing sleeve (702) is abutted against the hollow nut (701), and the other end of the pressing sleeve (702) is abutted against the end face of the elastic washer (703) at the leftmost side.

3. Plunger pump for the production of soft capsules according to claim 1, characterized in that said trimming assembly (5) comprises:

a threaded hole (601) axially provided in the first rod portion (603);

one end of the screw rod (501) is screwed in the threaded hole (601), and the other end of the screw rod extends out of one side, far away from the flange (602), of the push block (4);

the second nut (503) is screwed on the screw rod (501) and is close to the push block (4);

and the first nut (502) is screwed on the screw rod (501) and is positioned outside the second nut (503).

4. The plunger pump for producing soft capsules according to claim 1, wherein said clearance L is 0.5 to 1.5 mm.

5. The plunger pump for soft capsule production of claim 2, wherein said elastic washer (703) and said sealing sleeve (704) are made of teflon.