CN108685691B

CN108685691B - Double-screw rod lifting and extruding structure

Info

Publication number: CN108685691B
Application number: CN201710233068.8A
Authority: CN
Inventors: 蔡宝昌; 张金连; 秦昆明; 蔡挺
Original assignee: HANGZHOU HAISHAN PHARMACEUTICAL EQUIPMENT CO Ltd
Current assignee: HANGZHOU HAISHAN PHARMACEUTICAL EQUIPMENT CO Ltd
Priority date: 2017-04-11
Filing date: 2017-04-11
Publication date: 2020-10-16
Anticipated expiration: 2037-04-11
Also published as: CN108685691A

Abstract

The invention relates to a double-screw rod lifting and extruding structure, which comprises: the outer periphery of the thick wire rod with a hollow structure is a spiral surface so as to form connection for promoting the thick wire rod to lift with an external mechanism; the lower end of the thick wire rod is a connecting end for fixing the pot cover, and a first bearing is arranged in the thick wire rod; the upper end of the thick screw rod is provided with a bearing hole, and a second bearing and a tapered roller bearing are sequentially arranged in the bearing hole from bottom to top; the thin screw rod is coaxially arranged in the hollow part of the thick screw rod, the periphery of the lower section of the thin screw rod is a spiral surface, and the upper section of the thin screw rod is provided with an annular boss; the upper section penetrates through the second bearing and the tapered roller bearing, and the lower side wall of the annular boss is buckled and pressed on the upper end face of the inner ring of the tapered roller bearing; and the screw rod sleeve is sleeved on the spiral periphery of the fine screw rod, the lower end of the screw rod sleeve penetrates through the first bearing, and the periphery of the screw rod sleeve is provided with a limiting mechanism for preventing the screw rod sleeve from rotating. Therefore, the invention can open the pot cover and extrude the medicine package in the same straight line through the double-screw lifting structure.

Description

Double-screw rod lifting and extruding structure

Technical Field

The invention relates to a traditional Chinese medicine decoction decocting device, in particular to a double-screw rod lifting and extruding structure.

Background

The decoction is the earliest and most widely applied medicament form in China, and as the medicament can be added or reduced according to clinical requirements, the decoction has the characteristics of easy absorption, quick response, simple preparation and the like, is highly popular among doctors of all generations, and is still the main form of Chinese medicament. With the development of industrial modernization, the development of modern traditional Chinese medicine and the ever-expanding social demand, the traditional Chinese medicine decoction is gradually developed from the original traditional artificial casserole decoction to the automatic decoction of a medicine decocting machine. The decocting machine is adopted for decocting, the decocting efficiency can be effectively improved, the advantages of convenience, rapidness and the like are achieved, and the key problem is that whether the quality of decoction can be guaranteed or not is achieved when batch automatic efficient decoction of traditional Chinese medicine is carried out.

The material basis of the decoction which influences the curative effect is mainly the effective components decocted from the decoction, which is recorded in Xulingtai: the herb-decocting method is most suitable for the case that the herbs have no effect, so it is all the more. Therefore, to exert the clinical curative effect of the traditional Chinese medicine decoction, the effective components must be decocted to the maximum extent. The rate of decocting the traditional Chinese medicine also becomes an evaluation index for inspecting the decocting quality of the traditional Chinese medicine decocting machine.

As one of measures for improving the traditional Chinese medicine decocting rate, most of the traditional Chinese medicine decocting machines are provided with mechanical extrusion devices, so that the residual liquid medicine of the medicine dregs is fully extruded, and the medicine is extruded and stirred in the decocting process, so that the effective ingredients in the traditional Chinese medicine are easier to decoct.

Korean developed a machine for decocting Chinese herbal medicines by extruding the liquid using an extruder, which is characterized in that: install the hand wheel extruder in the middle of the cover, the lift principle through the hand wheel extruder is taken out the traditional chinese medicine of decocting medicinal herbs through mechanical type extrusion, but takes time, difficultly, and the extrusion force is little and the extrusion is insufficient, seriously influences the result of use of machine of decocting medicinal herbs. At present, a plurality of drug decocting machine manufacturers improve the extrusion device.

A full-automatic Chinese medicinal decoction piece decocting machine ZL 92204658.1 is a medicine pressing device with hollow rod with oil through hole in the decocting pan, and a pressing cover at the lower end. ZL 002596610.6 discloses an automatic machine of decocting medicinal herbs is provided with dregs of a decoction extrusion device, including main shaft, extrusion dish and main shaft twist grip, as long as rotatory main shaft twist grip, the extrusion dish will reciprocate, realizes lifting up and down moving the function of extrusion dregs of a decoction. ZL 200420041962.10 provides take stirring and abluent automatic traditional chinese medicine decocting machine sets up the stripper plate in the decocte jar, and the lower terminal surface of stripper plate is provided with the blade, and the up end of stripper plate passes through the extrusion stem to be connected with the agitator motor who sets up in the decocte jar upper end, has realized that can stir and abluent full-automatic traditional chinese medicine decocte, has improved the rate of decocting medicinal effective component. ZL 2004200848410.6 provides a traditional chinese medicine machine of decocting medicinal herbs with electronic extrusion device, is equipped with a dregs of a decoction extrusion device inside the machine of decocting medicinal herbs, and this extrusion device comprises motor, the electronic control box of control motor pivoted, the reduction gear that links to each other with the motor output shaft, the drive gear that links to each other with the reduction gear, the lead screw of fixing on the drive gear, the cover pipe and the extrusion dish that the endotheca has the screw. The extrusion disc is fixed on the top of the sleeve and moves up and down along with the sleeve in which the screw nut is sleeved, so that medicine residues are extruded automatically. ZL 200620172868.0 discloses a normal pressure traditional Chinese medicine decocting machine with electric extrusion device, which is internally provided with a medicine residue electric extrusion device, and comprises a reversible motor, a transmission gear set, a screw rod, an extrusion rod and an extrusion disc. The extrusion rod penetrates through the base plate of the decoction barrel and extends into the inner barrel, and an extrusion disc is fixed at the top of the extrusion rod. In the rotary medicine decocting machine provided by ZL200720017802.9, after the medicine liquid is discharged, a big hand wheel is rotated to enable a squeezing plate to move downwards through a lead screw, and medicine liquid contained in medicine dregs is squeezed out. ZL 200920225457.7 discloses a liquid medicine extractor in traditional chinese medicine sediment comprises recipient, backup pad, screw rod, stripper plate, medicine cup, and during the use, pours the dregs of a decoction into the recipient, fixes the backup pad that has the screw rod in the recipient upper end, then rotates the handle of screw rod upper end, and the stripper plate can extrude the dregs of a decoction, and the liquid medicine of extrusion gets into in the medicine cup through the sieve mesh on the recipient bottom.

The ceramic traditional Chinese medicine decocting machine provided by ZL 00254287.0 is a method for fully extruding liquid medicine from a silica gel air bag by using a high-pressure air pump. The extrusion type medicine decocting machine disclosed in ZL 200920089604.2 is characterized in that an air bag is arranged in a medicine decocting unit, the air bag extrudes or releases a medicine bag in a medicine bag box through inflation and deflation of the air bag in the medicine decocting process, so that rolling and moving of traditional Chinese medicine formulas in the medicine bag are realized, and after the medicine decocting process is completed, a control unit controls the air bag to shrink.

The extrusion motion of the above-mentioned patent has two modes, one is from the bottom to the top and the other is from the top to the bottom. The water leaks when the water-saving cup is pressed upwards from the lower part for a long time. The bottom extrusion must be changed to the top extrusion to ensure stability of the machine and ease of disassembly and maintenance. At present, the traditional medicine decocting machine with the upper extrusion part has no automatic cover opening function.

Disclosure of Invention

The invention mainly aims to provide a double-screw rod lifting extrusion structure which can extrude a medicine bag and can control the opening and closing of a pot cover.

The technical problem of the invention is mainly solved by the following technical scheme: a double-screw lifting extrusion structure comprises:

the outer periphery of the thick wire rod with a hollow structure is a spiral surface so as to form connection for promoting the thick wire rod to lift with an external mechanism; the lower end of the thick wire rod is a connecting end for fixing the pot cover, and a first bearing is arranged in the thick wire rod; the upper end of the thick screw rod is provided with a bearing hole, and a second bearing and a tapered roller bearing are sequentially arranged in the bearing hole from bottom to top;

the thin screw rod is coaxially arranged in the hollow part of the thick screw rod, the periphery of the lower section of the thin screw rod is a spiral surface, and the upper section of the thin screw rod is provided with an annular boss; the upper section penetrates through the second bearing and the tapered roller bearing, and the lower side wall of the annular boss is buckled and pressed on the upper end face of the inner ring of the tapered roller bearing;

the screw rod sleeve is sleeved on the spiral periphery of the fine screw rod so as to convert the rotary motion of the fine screw rod into the linear motion of the screw rod sleeve; the lower end of the screw rod sleeve penetrates through the first bearing, and a limiting mechanism for preventing the screw rod sleeve from rotating is arranged between the periphery of the screw rod sleeve and the hollow inner wall surface of the thick screw rod.

Therefore, the present invention has the following advantageous effects.

1. The structure of screw rod extrusion is adopted, and the precipitation of effective components during decoction is ensured.

2. Through the double-screw lifting structure, the pot cover can be opened and the medicine bag can be extruded on the same straight line; the structure of having guaranteed the lead screw lift can directly promote, uncaps and need not overturn again, can directly promote uncaps, has solved among the prior art lead screw extrusion mechanism can not uncap or uncap the mechanism can not lead screw extruded drawback.

3. The screw rod extrusion needs to do both rotary motion and up-and-down micro-movement compound motion, so that the friction resistance of the screw rod is reduced.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Wherein: 1. a fine screw rod; 2. guiding round steel; 3. a bearing seat; 4. a thrust ball bearing; 5. a tapered roller bearing; 6. a second bearing; 7. sleeving; 8. a screw rod sleeve; 9. a coarse screw rod; 10. a first bearing.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b): the invention discloses a double-screw lifting extrusion structure, as shown in the attached figure 1, which comprises: the periphery of the thick screw rod 9 with a hollow structure is a spiral surface, and the thick screw rod 9 is connected with an external mechanism to promote the thick screw rod 9 to lift and control the actions of opening and closing the cover; the lower end of the thick screw rod 9 is a connecting end for directly or indirectly fixing the pot cover through a transition connecting piece, and a first bearing 10 is arranged in the thick screw rod; the upper end of the thick screw rod 9 is provided with a bearing hole, a second bearing 6 and a tapered roller bearing 5 are sequentially arranged in the bearing hole from bottom to top, the tapered roller bearing 5 faces downwards, and an inner ring bears a downward axial load; the thin screw rod 1 is coaxially arranged in the hollow of the thick screw rod 9, the periphery of the lower section of the thin screw rod is a spiral surface, and the upper section of the thin screw rod is provided with an annular boss; the upper section passes through the second bearing 6 and the tapered roller bearing 5, and the lower side wall of the annular boss is buckled and pressed on the upper end surface of the inner ring of the tapered roller bearing 5; and a screw rod sleeve 8 which is sleeved on the spiral periphery of the fine screw rod 1 so as to convert the rotary motion of the fine screw rod 1 into the linear motion of the screw rod sleeve 8; the lower end of the screw rod sleeve 8 penetrates through the first bearing 10, and a limiting mechanism for preventing the screw rod sleeve 8 from rotating is arranged between the periphery of the screw rod sleeve and the hollow inner wall surface of the thick screw rod 9. The end part of the filament rod is provided with a plane bearing or a thrust ball bearing 4, and when the filament rod moves reversely, the friction can be reduced, the rotation of the filament rod can be ensured, and a certain axial force can be borne.

Bearing hole installation second bearing 6 and tapered roller bearing 5 to provide spacingly for tapered roller bearing 5 outer lane from the lower part, it can adopt two kinds of schemes, and first scheme is: the upper end of the thick screw rod 9 is provided with a bearing seat 3, a bearing hole is arranged in the bearing seat 3, an embedded bushing 7 is arranged in the bearing seat 3, a second bearing 6 is arranged in the embedded bushing 7, the upper end part of the embedded bushing 7 is provided with a groove, and the groove edge of the groove is abutted against the lower end face of the outer ring of the tapered roller bearing 5. The second scheme is as follows: the bearing hole on the thick screw rod 9 is in a step shape, the small diameter end is arranged below and is internally provided with the second bearing 6, the large diameter end is arranged above and is internally provided with the tapered roller bearing 5, and the outer ring of the tapered roller bearing 5 is limited by the step surface in the bearing hole. Compared with the prior art, the thick screw rod and the bearing seat are separately arranged in the first scheme, so that the manufacturing is convenient, the thick screw rod in the second scheme is of an integrated structure, and the second bearing 6 and the tapered roller bearing 5 have better coaxiality.

The end part of the connecting end of the thick screw rod 9 extends radially to form a disc, and a plurality of through holes are arranged on the disc. So as to be connected with the cooker cover, and apply downward pressure to the cooker cover through the disc, thereby increasing the stressed area and transmitting the pressure to the cooker cover more uniformly.

The first bearing 10 and the second bearing 6 are oilless bearings or copper sleeves, and the oilless bearings can be copper sleeves embedded with graphite; the end face of the connecting end of the thick screw rod 9 is recessed into an annular groove, and a disc is arranged on the periphery of the first bearing 10 and embedded into the annular groove.

The limiting structure between the periphery of the screw rod sleeve 8 and the thick screw rod 9 prevents the screw rod sleeve 8 from rotating along the axis when moving axially, and a conventional structure can be adopted, for example, the screw rod sleeve 8 is provided with a strip-shaped groove, the thick screw rod 9 is provided with a pin, or the screw rod sleeve 8 is axially provided with a plurality of convex strips, and the thick screw rod 9 is correspondingly provided with a plurality of strip-shaped grooves; in the present invention, a preferable technical scheme is provided, and the limiting structure includes: a clamping groove arranged on the periphery of the screw rod sleeve 8; the guide round steel 2 is a rod-shaped body and is arranged along the axial direction of the thick screw rod 9; the guide round steel 2 is fixed on the inner peripheral wall of the thick screw rod 9 and inserted into the clamping groove to provide guide for the axial movement of the screw rod sleeve 8. The structure is simple, the manufacture is easy, and especially, the length of the guide round steel 2 can be controlled according to the axial moving stroke of the actual requirement; and the solid structure at place need link up in the bar groove among the traditional structure, because the axial length of screw rod cover is great, obviously the bar groove link up the screw rod cover body and has both increased the processing degree of difficulty and be not convenient for install again. In order to further improve the manufacturability, the periphery of the screw rod sleeve 8 is provided with a bulge, the bulge is provided with a clamping groove, the clamping groove is easier to form, and the clamping groove is only arranged on the bulge, so that the cutting amount of the screw rod sleeve 8 is reduced, and the manufacturing cost is reduced. In addition, the outer contour of the screw rod sleeve 8 is a slender rod shape, and a segmented structure can be adopted, namely, the part connected with the thin screw rod 1 internally and provided with a bulge externally is a segment, the rest part to the extending end is a segment, the two segments are separately manufactured as separate bodies, and then are in threaded connection or welded into a whole.

It should be noted that the connection between the fine screw rod 1 and the screw rod sleeve 8 is to convert the rotary motion of the fine screw rod 1 into the linear motion of the screw rod sleeve 8; the connection structure between the two can adopt the connection structure that the screw thread closes soon, also can adopt the connection structure of ball.

In practical application, the hollow thick screw rod is lifted to open the pot cover, the thin screw rod rotates in the hollow thick screw rod (moves up and down in an oilless bearing or a copper sleeve inner ring and rotates), and the extending part of the screw rod sleeve 8 moves up and down to loosen and extrude the medicine bag; when the pipe sleeve is extruded and subjected to resistance, the filament rod moves up and down under the reaction of force and rotates at the same time, and the inner ring and the outer ring of the tapered roller bearing are separated and rotate while the filament rod moves reversely.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a two lead screw lift extrusion structure which characterized in that includes:

the outer periphery of the thick screw rod (9) is a spiral surface, so that the thick screw rod (9) is connected with an external mechanism to promote the thick screw rod to lift; the lower end of the thick screw rod (9) is a connecting end for fixing the pot cover, and a first bearing (10) is arranged in the thick screw rod; the upper end of the thick screw rod (9) is provided with a bearing hole, and a second bearing (6) and a tapered roller bearing (5) are sequentially arranged in the bearing hole from bottom to top;

the thin screw rod (1) is coaxially arranged in the hollow part of the thick screw rod (9), the periphery of the lower section of the thin screw rod is a spiral surface, and the upper section of the thin screw rod is provided with an annular boss; the upper section of the annular boss penetrates through the second bearing (6) and the tapered roller bearing (5), and the lower side wall of the annular boss is buckled and pressed on the upper end face of the inner ring of the tapered roller bearing (5);

the screw rod sleeve (8) is sleeved on the spiral periphery of the fine screw rod (1) so as to convert the rotary motion of the fine screw rod (1) into the linear motion of the screw rod sleeve (8); the lower end of the screw rod sleeve (8) penetrates through the first bearing (10), and a limiting mechanism for preventing the screw rod sleeve (8) from rotating is arranged between the periphery of the screw rod sleeve and the hollow inner wall surface of the thick screw rod (9).

2. The double-screw lifting extrusion structure of claim 1, wherein: the upper end of the thick screw rod (9) is provided with a bearing seat (3), a bearing hole is formed in the bearing seat (3), an embedded bushing (7) is arranged in the bearing seat, a second bearing (6) is arranged in the embedded bushing (7), the upper end of the embedded bushing (7) is provided with a groove, and the groove edge of the groove is abutted against the lower end face of the outer ring of the tapered roller bearing (5).

3. The double-screw lifting extrusion structure of claim 1, wherein: the bearing hole on the coarse screw rod (9) is in a step shape, the small-diameter end is arranged below and is internally provided with the second bearing (6), the large-diameter end is arranged above and is internally provided with the tapered roller bearing (5), and the outer ring of the tapered roller bearing (5) is limited by the step surface in the bearing hole.

4. The double-screw lifting extrusion structure of claim 1, wherein: the end part of the connecting end of the thick screw rod (9) radially extends to form a disc, and a plurality of through holes are formed in the disc.

5. The double-screw lifting extrusion structure of claim 1, wherein: the first bearing (10) and the second bearing (6) are oilless bearings or copper sleeves; the end face of the connecting end of the thick screw rod (9) is recessed into an annular groove, a disc is arranged on the periphery of the first bearing (10), and the disc is embedded into the annular groove.

6. The twin lead screw elevating extrusion structure as set forth in any one of claims 1 to 5, wherein said limit mechanism comprises:

the clamping groove is arranged on the periphery of the screw rod sleeve (8);

the guide round steel (2) is a rod-shaped body and is arranged along the axial direction of the thick screw rod (9); the guide round steel (2) is fixed on the inner peripheral wall of the thick screw rod (9) and inserted into the clamping groove to provide guide for the axial movement of the screw rod sleeve (8).

7. The twin screw lifting extrusion structure of claim 6 wherein: the periphery of the screw rod sleeve (8) is provided with a bulge, and the bulge is provided with a clamping groove.