CN114151546B - Flour mill - Google Patents
Flour mill Download PDFInfo
- Publication number
- CN114151546B CN114151546B CN202111399131.8A CN202111399131A CN114151546B CN 114151546 B CN114151546 B CN 114151546B CN 202111399131 A CN202111399131 A CN 202111399131A CN 114151546 B CN114151546 B CN 114151546B
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- Prior art keywords
- air
- air guide
- transmission shaft
- transmission
- box body
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- 235000013312 flour Nutrition 0.000 title description 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 160
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000001954 sterilising effect Effects 0.000 claims abstract description 19
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/24—Drives
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention provides a pulverizer, which belongs to the technical field of pharmaceutical equipment and comprises a main box body, a transmission box body and a sealing structure. The main box body is internally provided with a main cavity, and a crushing part for crushing materials is arranged in the main cavity; the transmission box body is connected to one side of the main box body, a transmission shaft is rotationally arranged in the transmission box body, and one end of the transmission shaft penetrates into the main cavity and is connected with the crushing part; the sealing structure comprises an airtight structure and a contact sealing structure, the airtight structure is positioned on the side wall of the main cavity penetrating into the transmission shaft, and the airtight structure seals the main cavity in a working state by blowing out pressure gas to the circumferential direction of the rotating transmission shaft; the contact sealing structure is arranged in the transmission case body and is abutted against the circumference of the static transmission by self-expansion so as to seal the main chamber in a sterilization state. The pulverizer provided by the invention ensures that the main chamber is in a sealed environment under the working state and the sterilization state.
Description
Technical Field
The invention belongs to the technical field of pharmaceutical equipment, and particularly relates to a pulverizer.
Background
The pulverizer is also called as a pulverizer and a granulator, and can pulverize materials to reach corresponding granularity (mesh number), thereby providing good preparation for the next process.
The pulverizer is widely applied in the field of medicine, so strict requirements are imposed on the uniqueness of materials, but as gaps and corners inside the pulverizer can possibly remain materials, reactions or pollution can exist on different materials, cleaning and sterilization are required, so that the relative uniqueness of different batches of materials is ensured. The sterilization is a procedure after cleaning, and the sterilization is divided into online sterilization (without dismantling equipment) and offline sterilization (dismantling equipment), wherein the online sterilization is carried out in a closed environment by saturated steam sterilization, and microorganisms and spores are effectively killed in a short time, so that the cleaning requirement is met.
The crushing knife of the pulverizer is arranged in the main cavity, the motor is arranged outside the main cavity, and the pulverizing knife and the motor are connected through the transmission shaft. When the pulverizer is in a working state (pulverizing materials), the materials are in a main cavity, and the transmission shaft is in a high-speed rotating state; when the pulverizer is used for online sterilization, saturated steam is introduced into the main cavity, and the transmission shaft is in a static state. The pulverizer is required to be sealed in a working state and an online sterilization state, so that the main chamber is ensured to be in a sealed environment, and materials and steam are prevented from entering the transmission box body of the transmission shaft.
Disclosure of Invention
The invention aims to provide a pulverizer, which can ensure that a main chamber is in a sealed environment in different states, namely, in a state that a transmission shaft is rotated at a high speed or is in a static state.
In order to achieve the above purpose, the invention adopts the following technical scheme: there is provided a mill comprising:
the main box body is internally provided with a main cavity, and a crushing part for crushing materials is arranged in the main cavity;
the transmission box body is connected to one side of the main box body, a transmission shaft is rotationally arranged in the transmission box body, and one end of the transmission shaft penetrates into the main cavity and is connected with the crushing part;
the sealing structure comprises a gas sealing structure and a contact sealing structure, the gas sealing structure is positioned on the side wall of the main cavity penetrating into the transmission shaft, and the gas sealing structure seals the main cavity in a working state by blowing out pressure gas to the circumferential direction of the rotating transmission shaft; the contact sealing structure is arranged in the transmission box body and is abutted against the circumference of the static transmission by self-expansion so as to seal the main cavity in a sterilization state.
In one possible implementation manner, the airtight structure comprises an airtight chamber, an air supply channel and an air exhaust channel, the airtight chamber is arranged on the side wall of the transmission shaft penetrating into the main chamber, an air guide cover is arranged in the airtight chamber, the air guide cover is arranged around the circumference of the transmission shaft, an air seal gap is formed between the air guide cover and the transmission shaft, the air supply channel is communicated with the air guide cover, and the air exhaust channel is communicated with the airtight chamber.
In one possible implementation manner, the air guide cover comprises two air guide rings which are oppositely arranged, the air outlet end of the air supply channel is positioned between the two air guide rings, the outer side edge of the air guide ring is arranged on the side wall of the airtight chamber, and the air seal gap is formed between the inner side edge of the air guide ring and the transmission shaft.
In one possible implementation manner, the inner side edges of the two air guide rings are inclined outwards to form a flaring structure, the air seal gap is formed between the edge of the flaring structure and the transmission shaft, and pressure air enters the air seal cavity along the axial direction of the transmission shaft through the air seal gap.
In one possible implementation manner, the inner edge line of the flaring structure comprises an arc-shaped section, an inclined section and a horizontal section which are sequentially connected, the arc-shaped section and the side wall of the transmission shaft form a first air guide cavity, the inclined section and the side wall of the transmission shaft form a second air guide cavity, the horizontal section and the side wall of the transmission shaft form a third air guide cavity, and the first air guide cavity, the second air guide cavity and the third air guide cavity are sequentially communicated and are used for guiding the pressure air blown out from the axial direction perpendicular to the transmission shaft to be blown into the airtight cavity in parallel to the axial direction of the transmission shaft.
In one possible implementation manner, the side wall of the airtight chamber is circumferentially provided with an annular rib, two air guide rings are arranged on two sides of the annular rib, the air outlet end of the air supply channel is arranged on the end face of the annular rib, two sides of the annular rib are respectively provided with a press-fit ring, and the press-fit rings are clamped in the airtight chamber and are used for pressing the corresponding air guide ring on the side wall of the annular rib.
In one possible implementation manner, the contact sealing structure comprises a contact sealing cavity, an elastic sealing ring and an inflation channel, wherein the contact sealing cavity is arranged in the transmission box body and surrounds the circumference of the transmission shaft, the elastic sealing ring is arranged in the contact sealing cavity, the inflation cavity is formed in the elastic sealing ring, the inflation channel is formed in the transmission box body, and an inflation tube which is communicated with the inflation cavity is arranged in the inflation channel.
In one possible embodiment, the inner side of the cross section of the elastic sealing ring is provided with a bending section.
In one possible implementation manner, a sealing spiral cover is arranged on one side of the main box body, the sealing spiral cover is arranged in the middle of the sealing spiral cover, a circular air guide groove and an annular air guide groove are formed in the side surface of the sealing spiral cover, which is close to the transmission box body, the annular air guide groove is formed in the circumferential direction of the sealing spiral cover and is communicated with the sealing spiral cover, the circular air guide groove is positioned above the annular air guide groove, a straight section air guide groove is formed in the side surface of the sealing spiral cover, which is close to the transmission box body, and the straight section air guide groove extends to the lower side edge of the sealing spiral cover;
the air supply channel comprises a first air supply channel arranged in the main box body and a second air supply channel arranged in the transmission box body, the first air supply channel is communicated with the second air supply channel through the circular air guide groove, one end of the first air supply channel is communicated with the air guide cover, and the other end of the first air supply channel penetrates out of the transmission box body to be communicated with the outside;
the exhaust passage is arranged in the transmission case body, one end of the exhaust passage is communicated with the lower part of the straight section air guide groove, and the other end of the exhaust passage penetrates out of the transmission case body to be communicated with the outside.
In one possible implementation manner, the second air supply channel is arranged on the upper side of the transmission box body along the axial direction of the transmission shaft, and one end of the second air supply channel, which is far away from the circular air guide groove, is provided with a first threaded communication hole which is communicated with the outside; the exhaust passage is axially arranged on the lower side of the transmission box body along the transmission shaft, one end, away from the straight-section air guide groove, of the exhaust passage is provided with a second threaded communication hole, and the second threaded communication hole is communicated with the outside.
The flour mill provided by the invention has the beneficial effects that: compared with the prior art, when the milling machine is in the working state, the airtight structure can blow out pressure gas to the circumference of the transmission shaft, so that an airtight film is formed on the circumference of the transmission shaft rotating at high speed, thereby closing the main cavity and avoiding materials in the main cavity from entering the transmission box body. When the pulverizer is in a sterilization state, the contact sealing structure can expand, so that contact sealing is formed by abutting against the circumference of the transmission shaft in a static state, the main cavity is sealed, and saturated steam in the main cavity is prevented from entering the transmission box body. By using the pulverizer provided by the invention, the main chamber can be ensured to be in a sealed environment under the working state and the sterilization state.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a pulverizer in a working state according to the present invention;
fig. 2 is a schematic structural view of the pulverizer in a sterilizing state;
FIG. 3 is a first embodiment of a partial enlarged view at A in FIG. 1;
FIG. 4 is a second embodiment of a partial enlarged view at A in FIG. 1;
FIG. 5 is a third embodiment of a partial enlarged view at A in FIG. 1;
FIG. 6 is a first embodiment of a partial enlarged view at B in FIG. 1;
FIG. 7 is a second embodiment of a partial enlarged view at B in FIG. 1;
fig. 8 is a schematic structural view of the seal cap according to the present invention.
Reference numerals illustrate:
100. a main case; 110. a main chamber; 120. a pulverizing part; 130. sealing and screwing the cover; 131. a circular air guide groove; 1311. an annular seal ring; 132. an annular air guide groove; 133. a straight section air guide groove; 200. a transmission case; 210. a transmission shaft; 220. a first threaded communication hole; 230. a second threaded communication hole; 310. an airtight chamber; 320. a gas ring; 3201. positioning an edge; 321. an arc section; 322. an inclined section; 323. a horizontal section; 3210. a first air guide cavity; 3220. a second air guide cavity; 3230. a third air guide cavity; 330. annular rib; 340. press fitting the ring; 350. a first air supply channel; 360. a second air supply channel; 370. an exhaust passage; 410. an elastic sealing ring; 411. an inflation chamber; 412. a bending section; 420. and (5) an inflation tube.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, a pulverizer according to the present invention will now be described. A pulverizer comprises a main case 100, a transmission case 200, and a sealing structure.
The main chamber 110 is provided in the main housing 100, and a pulverizing unit 120 for pulverizing materials is provided in the main chamber 110; the transmission case 200 is connected to one side of the main case 100, a transmission shaft 210 is rotatably provided in the transmission case 200, and one end of the transmission shaft 210 penetrates into the main chamber 110 and is connected to the pulverizing part 120; the sealing structure comprises a hermetic sealing structure and a contact sealing structure, the hermetic sealing structure is positioned on the side wall of the main chamber 110 penetrating into the transmission shaft 210, and the hermetic sealing structure seals the main chamber 110 in a working state by blowing out pressure gas to the circumferential direction of the rotating transmission shaft 210; a contact seal is provided within the transmission housing 200 which seals the main chamber 110 in a sterilized condition by expanding itself against the circumference of the stationary transmission.
Compared with the prior art, the pulverizer provided by the invention has the advantages that the main box body 100 and the transmission box body 200 are sequentially connected, the transmission shaft 210 is arranged in the middle of the transmission box body 200 in a penetrating way, two ends of the transmission shaft 210 respectively penetrate out of the transmission box body 200, the pulverizing part 120 of the main box body 100 is arranged at one end of the transmission shaft 210 penetrating into the main box body 100, and the other end of the transmission shaft 210 is connected with an external driving motor, so that the transmission shaft 210 is driven to act. When the pulverizer is in an operating state, the driving motor is started to drive the transmission shaft 210 to rotate at a high speed, so that the pulverizing part 120 is driven to break up the materials in the main chamber 110. When the pulverizer is in a sterilized state, the driving motor is stopped, the transmission shaft 210 is in a stationary state, and saturated steam is introduced into the main chamber 110.
The sealing structure comprises a hermetic sealing structure and a contact sealing structure, when the pulverizer is in a working state, the hermetic sealing structure can blow out pressure gas to the circumference of the transmission shaft 210, so that a hermetic sealing film is formed on the circumference of the transmission shaft 210 rotating at a high speed, thereby closing the main chamber 110 and avoiding materials in the main chamber 110 from entering the transmission box body 200. When the mill is in a sterilized state, the contact seal structure can expand itself to form a contact seal against the circumference of the drive shaft 210 in a stationary state, thereby sealing the main chamber 110 from the saturated steam in the main chamber 110 entering the drive housing 200. The use of the mill provided by the invention ensures that the main chamber 110 is in a sealed environment both in the operating state and in the sterilized state.
In some embodiments, referring to fig. 1, 3, 4 and 5, the airtight structure includes an airtight chamber 310, an air supply channel and an air exhaust channel 370, the airtight chamber 310 is opened on a side wall of the main chamber 110 penetrating into the transmission shaft 210, an air guide cover is disposed in the airtight chamber 310, the air guide cover is circumferentially disposed on the transmission shaft 210, an air seal gap is formed between the air guide cover and the transmission shaft 210, the air supply channel is communicated with the air guide cover, and the air exhaust channel 370 is communicated with the airtight chamber 310.
Specifically, when the mill is sealed in the working state, the pressure gas is introduced into the gas supply channel, and enters the gas guide cover through the gas supply channel, and the gas seal chamber 310 and the main chamber 110 are blown into the gas seal gap between the gas guide cover and the transmission shaft 210, and the gas seal gap is a micro-narrow gap, so that an air film is formed in the gap. And then the transmission shaft 210 is driven to rotate, and the transmission shaft 210 is in a high-speed rotating state so as to drive the crushing part 120 to rotate to crush the materials in the main chamber 110. At this time, the air film may block the material from entering the transmission case 200 through the gap of the transmission shaft 210 and the external polluted air from entering the main chamber 110. Eventually, the gas is again vented by vent passage 370, which communicates with hermetically sealed chamber 310, and other unidirectional passages downstream of main chamber 110. By continuously supplying pressure gas into the gas supply channel, the mill is ensured to always keep the materials in the main chamber 110 in a sealed state in the working state. The pulverizer provided by the invention can effectively seal the transmission shaft 210 rotating at high speed through the air sealing structure, so that the problem of chip pollution caused by adopting contact sealing is avoided.
In some embodiments, referring to fig. 1 and 3, the air guide cover includes two air guide rings 320 disposed opposite to each other, the air outlet end of the air supply channel is located between the two air guide rings 320, the outer side edge of the air guide ring 320 is disposed on the side wall of the airtight chamber 310, and an air seal gap is formed between the inner side edge of the air guide ring 320 and the transmission shaft 210.
Specifically, the two air guide rings 320 are arranged in the airtight chamber 310 at intervals, the outer diameter of the air guide ring 320 is consistent with the inner contour of the airtight chamber 310, so that the outer side edge of the air guide ring 320 is attached to the edge of the airtight chamber 310, the pressure air introduced into the air supply channel enters into the gap between the two air guide rings 320, is guided by the gap between the two air guide rings 320, and is blown out from the space between the inner side edge of the air guide ring 320 and the transmission shaft 210, so that enough air pressure is provided to prevent materials from entering into the airtight chamber 310, and the materials are prevented from entering into the transmission box 200 through the airtight chamber 310.
In some embodiments, referring to fig. 3 to 5, the inner sides of the two gas rings 320 are inclined outwards to form a flaring structure, and a gas seal gap is formed between the edge of the flaring structure and the transmission shaft 210, through which pressurized gas enters the gas seal chamber 310 along the axial direction of the transmission shaft 210.
Specifically, the flaring structure and the slightly narrow air seal gap can guide the pressure air to blow out along the axial direction of the transmission shaft 210 as much as possible, so as to improve the air seal effect.
In some embodiments, referring to fig. 3, the inner edge line of the flaring structure includes an arc-shaped section 321, an inclined section 322 and a horizontal section 323 which are sequentially connected, wherein the arc-shaped section 321 and the side wall of the transmission shaft 210 form a first air guiding cavity 3210, the inclined section 322 and the side wall of the transmission shaft 210 form a second air guiding cavity 3220, the horizontal section 323 and the side wall of the transmission shaft 210 form a third air guiding cavity 3230, and the first air guiding cavity 3210, the second air guiding cavity 3220 and the third air guiding cavity 3230 are sequentially communicated and are used for guiding the pressure air blown out perpendicular to the axial direction of the transmission shaft 210 to the axial blowing air sealing cavity 310 parallel to the transmission shaft 210.
Specifically, the first air guiding cavity 3210, the second air guiding cavity 3220 and the third air guiding cavity 3230 are sequentially communicated, are all annular cavities, and are circumferentially arranged around the transmission shaft 210.
The pressure gas is blown out from the exhaust channel 370, the blown-out airflow direction is perpendicular to the axial direction of the transmission shaft 210, the air is guided to flow to two outer sides by the arc-shaped section 321 of the first air guide cavity 3210, the air reaches the second air guide cavity 3220, the air is guided to further incline by the inclined section 322 of the second air guide cavity 3220, the air tends to be parallel to the axial direction of the transmission shaft 210, the air reaches the third air guide cavity 3230, the horizontal section 323 of the third air guide cavity 3230 cooperates with the side wall of the transmission shaft 210 to form an airflow channel parallel to the axial direction of the transmission shaft 210, and the air can form an airflow direction parallel to the axial direction of the transmission shaft 210 after passing through the third air guide cavity 3230. The air blown out parallel to the drive shaft 210 has sufficient air pressure, and can improve the sealing effect of the air seal.
Preferably, the projection length of the inclined section 322 in the axial direction of the transmission shaft 210 is greater than 1/2 of the sum of the projection lengths of the inner edge lines of the flaring structures in the axial direction of the transmission shaft 210, i.e. the inclined section 322 has a sufficient length, so that the inclination angle of the inclined section 322 does not need to be excessively large, thus reducing the loss of wind pressure and improving the air sealing effect.
In some embodiments, referring to fig. 3, the side wall of the airtight chamber 310 is circumferentially provided with an annular rib 330, two air guide rings 320 are disposed at two sides of the annular rib 330, the air outlet end of the air supply channel is disposed on the end surface of the annular rib 330, two sides of the annular rib 330 are respectively provided with a press-fitting ring 340, and the press-fitting rings 340 are clamped in the airtight chamber 310 to press the corresponding air guide rings 320 onto the side wall of the annular rib 330.
Specifically, the annular rib 330 integrally forms the circumference of the middle part of the airtight chamber 310, the two air guide rings 320 are respectively located at two sides of the annular rib 330, and the air outlet end of the air supply channel is arranged on the end surface of the annular rib 330, so that the pressure air entering from the air supply channel can smoothly enter into the gap between the two air guide rings 320.
The two press-fitting rings 340 are respectively clamped at two sides of the annular convex edge 330 and are stably installed in the airtight cavity 310 of the press-fitting ring, so that the corresponding air guide ring 320 is pressed on the side wall of the annular convex edge 330, the sealing effect of the outer side edge of the air guide ring 320 is ensured, and the air leakage condition of the outer side edge of the air guide ring 320 is avoided.
Preferably, referring to fig. 4, a positioning edge 3201 is circumferentially provided on an outer end surface of an outer side edge of the air ring 320, and an annular positioning groove is correspondingly provided on the press-fit ring 340, when the press-fit ring 340 presses the air ring 320, the positioning edge 3201 is inserted into the annular positioning groove of the press-fit ring 340, so that stability of the air ring 320 can be further improved, and a problem that the air ring 320 is offset or even falls due to continuous introduction of pressure air is avoided.
Preferably, referring to fig. 5, a positioning edge 3201 is circumferentially provided on an inner end surface of an outer side edge of the air ring 320, two sides of the annular rib 330 are provided with annular positioning grooves correspondingly, when the air ring 320 is installed, the positioning edge 3201 is inserted into the annular positioning groove of the annular rib 330, and then the air ring 320 is pressed by the press-fit ring 340, so that stability of the air ring 320 can be improved.
In some embodiments, referring to fig. 2, 6 and 7, the contact seal structure includes a contact seal chamber, an elastic seal ring 410 and an inflation channel, the contact seal chamber is disposed in the transmission case 200 and surrounds the circumference of the transmission shaft 210, the elastic seal ring 410 is disposed in the contact seal chamber, the inflation chamber 411 is disposed in the elastic seal ring 410, the inflation channel is disposed on the transmission case 200, and the inflation channel is provided with an inflation tube 420 communicating with the inflation chamber 411.
Specifically, when the pulverizer is in online sterilization, the transmission shaft 210 is in a static state, the inflation tube 420 inflates the inflation chamber 411, the elastic sealing ring 410 expands, the inner side edge of the elastic sealing ring 410 abuts against the circumference of the transmission shaft 210 to form contact seal, a complete sealing environment is ensured to be formed in the main chamber 110, and then saturated steam is introduced into the main chamber 110. So as to smoothly perform high-temperature saturated steam sterilization operation.
In some embodiments, the inner side of the cross section of the elastomeric seal ring 410 is provided with a crimped section 412.
Alternatively, referring to fig. 6, the bending section 412 is M-shaped, and in the non-inflated state of the inflation chamber 411, the upper inner side of the middle of the bending section 412 is completely, i.e. far from the direction of the transmission shaft 210. By continuously inflating the inflation chamber 411, the middle part of the M-shaped bending section 412 expands outwards under the action of air pressure and abuts against the circumference of the transmission shaft 210, so that a good contact seal is achieved.
Alternatively, referring to fig. 7, the bending section 412 is in a wave shape, and has a plurality of peaks and a plurality of valleys, and in the non-inflated state of the inflation chamber 411, a certain gap exists between the bending section 412 and the transmission shaft 210. Through constantly aerifing to the inflation cavity 411, under the effect of atmospheric pressure, the wave is bent section 412 outwards and is expanded, and the circumference at transmission shaft 210 is butt in a plurality of outside crest parts, because a plurality of crest parts arrange in proper order along the axial of transmission shaft 210, consequently, contact seal structure that can the multilayer can further improve the effect of contact seal.
In some embodiments, referring to fig. 1, 2 and 7, a seal screw cap 130 is disposed on one side of the main case 100, a seal chamber 310 is disposed in the middle of the seal screw cap 130, a circular air guide groove 131 and an annular air guide groove 132 are disposed on the side of the seal screw cap 130 close to the transmission case 200, the annular air guide groove 132 is disposed in the circumferential direction of the seal chamber 310 and is communicated with the seal chamber 310, the circular air guide groove 131 is disposed above the annular air guide groove 132, a straight air guide groove 133 is disposed on the side of the seal screw cap 130 close to the transmission case 200, and the straight air guide groove 133 extends towards the lower side edge of the seal screw cap 130.
The air supply channel comprises a first air supply channel 350 arranged in the main box body 100 and a second air supply channel 360 arranged in the transmission box body 200, wherein the first air supply channel 350 and the second air supply channel 360 are communicated through the circular air guide groove 131, one end of the first air supply channel 350 is communicated with the air guide cover, and the other end of the first air supply channel penetrates out of the transmission box body 200 to be communicated with the outside.
The exhaust channel 370 is arranged in the transmission case 200, one end of the exhaust channel 370 is communicated with the lower part of the straight air guide groove 133, and the other end penetrates out of the transmission case 200 to be communicated with the outside.
Specifically, a threaded hole is formed in a side of the main casing 100 adjacent to the transmission casing 200, and the seal screw cap 130 is screwed into the threaded hole. The sealing screw cap 130 is a circular cap body, and the airtight chamber 310 is a cylindrical chamber, which is located in the middle of the sealing screw cap 130 and is coaxially disposed. The seal screw cap 130 is inserted into and sealed with one end of the transmission case 200, and the transmission shaft 210 is coaxial with the seal screw cap 130.
The first air supply passage 350 is provided at the upper side of the main sealing screw cap 130, one end of which is connected to the circular air guide groove 131, the other end of which is connected to the airtight chamber 310, and the second air supply passage 360 is horizontally provided at the upper side of the transmission case 200, one end of which is connected to the circular air guide groove 131, and the other end of which is connected to the outside. Therefore, the first air supply channel 350 and the second air supply channel 360 form a completed air supply channel through the circular air guide groove 131, and the circular air guide groove 131 is positioned on the joint surface of the sealing screw cap 130 and the transmission case 200, and the diameter of the circular air guide groove is far greater than the inner diameter of the air supply channel, so that the first air supply channel 350 and the second air supply channel 360 can be smoothly communicated through the transition of the circular air guide groove 131 even if the first air supply channel and the second air supply channel 360 cannot be completely aligned.
Preferably, an annular sealing ring 1311 is installed on the outer circumference of the circular air guide groove 131, so that the condition that air leakage occurs at the joint surface of the sealing screw cap 130 and the transmission case 200 after pressure air enters the circular air guide groove 131 is avoided.
The exhaust passage 370 is horizontally opened at the lower side of the transmission case 200, one end of which is communicated with the straight air guide groove 133, and the other end of which is communicated with the outside. Wherein, the width of straight section air guide groove 133 is greater than the internal diameter of exhaust channel 370, and exhaust channel 370 is easier to align straight section air guide groove 133, and when adjusting second air supply channel 360 and circular air guide groove 131, exhaust channel 370 also can not easily stagger with straight section air guide groove 133. In addition, the annular air guide groove 132 is located on the outer end surface of the seal spiral cover 130, is located in the circumferential direction of the airtight chamber 310 and is communicated with the airtight chamber 310, the straight-section air guide groove 133 is communicated with the annular air guide groove 132, and the air discharged from the airtight chamber 310 is discharged outwards through the annular air guide groove 132, so that the air is discharged more smoothly, and then enters the air discharge channel 370 through the straight-section air guide groove 133.
In some embodiments, referring to fig. 1 and 2, a second air supply channel 360 is opened on the upper side of the transmission case 200 along the axial direction of the transmission shaft 210, one end of the second air supply channel 360 away from the circular air guide groove 131 is provided with a first threaded communication hole 220, and the first threaded communication hole 220 is communicated with the outside; the exhaust passage 370 is axially provided at the lower side of the transmission case 200 along the transmission shaft 210, and a second threaded communication hole 230 is provided at one end of the exhaust passage 370, which is far away from the straight air guide groove 133, and the second threaded communication hole 230 communicates with the outside.
Specifically, the first threaded communication hole 220 is located at the air inlet end of the air supply channel, the second threaded communication hole 230 is located at the air outlet end of the air outlet channel 370, and the first threaded communication hole 220 and the second threaded communication hole 230 are adapted to be screwed on the sealing screw plug to seal the air inlet channel and the air outlet channel 370, so that the problem that saturated steam leaks through the air supply channel and the air outlet channel 370 in a sterilization state is avoided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. A mill, comprising:
a main box body (100) internally provided with a main chamber (110), wherein a crushing component (120) for crushing materials is arranged in the main chamber (110);
the transmission box body (200) is connected to one side of the main box body (100), a transmission shaft (210) is rotatably arranged in the transmission box body (200), and one end of the transmission shaft (210) penetrates into the main cavity (110) and is connected with the crushing component (120);
the sealing structure comprises a gas sealing structure and a contact sealing structure, wherein the gas sealing structure is positioned on the side wall of the main cavity (110) penetrating into the transmission shaft (210), and the gas sealing structure seals the main cavity (110) in an operating state by blowing out pressure gas to the circumferential direction of the rotating transmission shaft (210); the contact sealing structure is arranged in the transmission box body (200) and is abutted against the circumference of the static transmission by self-expansion so as to seal the main cavity (110) in a sterilization state;
the airtight structure comprises an airtight chamber (310), an air supply channel and an air exhaust channel (370), wherein the airtight chamber (310) is formed in the way that a main chamber (110) penetrates into the side wall of the transmission shaft (210), an air guide cover is arranged in the airtight chamber (310), the air guide cover is arranged around the circumference of the transmission shaft (210), an airtight gap is formed between the air guide cover and the transmission shaft (210), the air supply channel is communicated with the air guide cover, and the air exhaust channel (370) is communicated with the airtight chamber (310);
the air guide cover comprises two air guide rings (320) which are oppositely arranged, the air outlet end of the air supply channel is positioned between the two air guide rings (320), the outer side edge of the air guide ring (320) is arranged on the side wall of the air seal cavity (310), and an air seal gap is formed between the inner side edge of the air guide ring (320) and the transmission shaft (210).
2. A mill according to claim 1, wherein the inner sides of both said gas rings (320) are inclined outwardly to form a flared structure, the edges of which form said gas seal gap with the drive shaft (210), through which gas under pressure enters said gas-tight chamber (310) in the axial direction of the drive shaft (210).
3. A mill according to claim 2, characterized in that the inner edge line of the flaring structure comprises an arc-shaped section (321), an inclined section (322) and a horizontal section (323) which are connected in sequence, the arc-shaped section (321) and the side wall of the transmission shaft (210) form a first air guiding cavity (3210), the inclined section (322) and the side wall of the transmission shaft (210) form a second air guiding cavity (3220), the horizontal section (323) and the side wall of the transmission shaft (210) form a third air guiding cavity (3230), and the first air guiding cavity (3210), the second air guiding cavity (3220) and the third air guiding cavity (3230) are connected in sequence for guiding the pressure air blown out perpendicularly to the axial direction of the transmission shaft (210) and blowing in parallel to the air sealing cavity (310).
4. The pulverizer as claimed in claim 1, wherein the sidewall of the airtight chamber (310) is circumferentially provided with an annular rib (330), two air guide rings (320) are disposed on two sides of the annular rib (330), the air outlet end of the air supply channel is disposed on the end face of the annular rib (330), two sides of the annular rib (330) are respectively provided with a press-fit ring (340), and the press-fit rings (340) are clamped in the airtight chamber (310) to press the corresponding air guide rings (320) on the sidewall of the annular rib (330).
5. A pulverizer as claimed in claim 1, wherein the contact seal structure comprises a contact seal chamber, an elastic seal ring (410) and an inflation channel, the contact seal chamber is arranged in the transmission case (200) and surrounds the circumference of the transmission shaft (210), the elastic seal ring (410) is arranged in the contact seal chamber, the inflation chamber (411) is arranged in the elastic seal ring (410), the inflation channel is arranged on the transmission case (200), and an inflation tube (420) communicating with the inflation chamber (411) is arranged in the inflation channel.
6. A mill according to claim 5, characterized in that the inner side of the cross section of the elastic sealing ring (410) is provided with a bending section (412).
7. The pulverizer as claimed in claim 1, wherein a seal screw cap (130) is provided on one side of the main casing (100), the seal screw cap (310) is provided in the middle of the seal screw cap (130), a circular air guide groove (131) and an annular air guide groove (132) are provided on the side surface of the seal screw cap (130) close to the transmission casing (200), the annular air guide groove (132) is provided in the circumferential direction of the seal screw cap (310) and is communicated with the seal screw cap (310), the circular air guide groove (131) is located above the annular air guide groove (132), a straight air guide groove (133) is provided on the side surface of the seal screw cap (130) close to the transmission casing (200), and the straight air guide groove (133) extends to the lower side edge of the seal screw cap (130);
the air supply channel comprises a first air supply channel (350) which is arranged in the main box body (100) and a second air supply channel (360) which is arranged in the transmission box body (200), the first air supply channel (350) is communicated with the second air supply channel (360) through the circular air guide groove (131), one end of the first air supply channel (350) is communicated with the air guide cover, and the other end of the first air supply channel penetrates out of the transmission box body (200) and is communicated with the outside;
the exhaust channel (370) is arranged in the transmission box body (200), one end of the exhaust channel (370) is communicated with the lower part of the straight air guide groove (133), and the other end of the exhaust channel penetrates out of the transmission box body (200) to be communicated with the outside.
8. The pulverizer as claimed in claim 7, wherein the second air supply passage (360) is opened to an upper side of the transmission case body (200) in an axial direction of the transmission shaft (210), a first screw communication hole (220) is provided at an end of the second air supply passage (360) away from the circular air guide groove (131), and the first screw communication hole (220) is communicated with the outside; the exhaust passage (370) is axially arranged on the lower side of the transmission box body (200) along the transmission shaft (210), one end, away from the straight-section air guide groove (133), of the exhaust passage (370) is provided with a second threaded communication hole (230), and the second threaded communication hole (230) is communicated with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399131.8A CN114151546B (en) | 2021-11-19 | 2021-11-19 | Flour mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111399131.8A CN114151546B (en) | 2021-11-19 | 2021-11-19 | Flour mill |
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| Publication Number | Publication Date |
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| CN114151546A CN114151546A (en) | 2022-03-08 |
| CN114151546B true CN114151546B (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111399131.8A Active CN114151546B (en) | 2021-11-19 | 2021-11-19 | Flour mill |
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| Country | Link |
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| CN (1) | CN114151546B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502828A (en) * | 2009-02-26 | 2009-08-12 | 武汉工程大学 | Sealing system of mechanical rapping apparatus |
| CN102466581A (en) * | 2010-11-09 | 2012-05-23 | 艾博生物医药(杭州)有限公司 | Device |
| CN108065758A (en) * | 2018-02-01 | 2018-05-25 | 合肥雅观匠道科技有限公司 | A kind of normal pressure Self-unlocking vapor-proof reveals formula high pressure steam box |
| CN110497476A (en) * | 2019-08-28 | 2019-11-26 | 六安永贞匠道机电科技有限公司 | A kind of emergency stop protection method of pneumatic actuation reciprocating saw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180021787A1 (en) * | 2016-07-22 | 2018-01-25 | Hsiang Hsi WANG | Lubricant pack for a paper shredder |
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2021
- 2021-11-19 CN CN202111399131.8A patent/CN114151546B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101502828A (en) * | 2009-02-26 | 2009-08-12 | 武汉工程大学 | Sealing system of mechanical rapping apparatus |
| CN102466581A (en) * | 2010-11-09 | 2012-05-23 | 艾博生物医药(杭州)有限公司 | Device |
| CN108065758A (en) * | 2018-02-01 | 2018-05-25 | 合肥雅观匠道科技有限公司 | A kind of normal pressure Self-unlocking vapor-proof reveals formula high pressure steam box |
| CN110497476A (en) * | 2019-08-28 | 2019-11-26 | 六安永贞匠道机电科技有限公司 | A kind of emergency stop protection method of pneumatic actuation reciprocating saw |
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| Publication number | Publication date |
|---|---|
| CN114151546A (en) | 2022-03-08 |
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