CN206334749U - A kind of multifunctional assembled linkage smashing-classifying integrated machine - Google Patents

Abstract

The utility model relates to a combined multifunctional linkage crushing and grading machine, which includes crushing equipment, grading equipment and collecting equipment connected by pipelines; Airflow classifier and airflow classification system; the inlet of the mechanical pulverizer is connected to the feeder through the feed pipe, and the outlet of the mechanical pulverizer is connected to the inlet of the classification chamber of the airflow classifier through the powder conveying conduit , the lower part of the airflow classifier communicates with the housing of the mechanical pulverizer through a return pipe, and a two-way communication structure is formed between the mechanical pulverizer and the airflow classifier; the outlet of the classification chamber of the airflow classifier is connected to the The inlet of the collecting device is connected. The utility model not only strictly limits the "big particles" but also avoids over-grinding by the circular feed structure of the utility model, which can maximize the production capacity of superfine grinding and meet the industrialization needs of "micronization" of traditional Chinese medicine.

Description

A combined multifunctional linkage crushing and grading all-in-one machine

technical field

The utility model relates to a solid material crushing device, in particular to a combined multifunctional linkage crushing and grading machine for traditional Chinese medicinal materials, which belongs to the technical field of pharmaceutical equipment.

Background technique

In the process of modernization of traditional Chinese medicine, "Chinese medicine cell wall breaking technology" is an important technical means in the processing of Chinese medicinal materials and the production process of traditional Chinese medicine preparations. The so-called cell-level crushing refers to the crushing operation aimed at breaking the cells of Chinese medicinal materials. The ultrafine grinding of traditional Chinese medicine pursues the breaking rate of cells. According to the pharmacopoeia or general standards, the fine powder of medicinal materials directly used in medicine is 80 mesh (180 μm) or 100 mesh (150 μm). In an ideal cell disruption model, 180 μm particles composed of 10 μm cells have a ratio of particle size to cell diameter n = 18, and the wall breaking rate η is only 15.77%. The traditional Chinese medicine ultra-fine pulverization technology crushes Chinese medicinal materials to 1250 mesh (10 μm). Under this fineness condition, the cell wall breaking rate of general medicinal materials is ≥95%. After the traditional Chinese medicine is "micronized", its characteristics are as follows:

1 Increase drug absorption rate and improve its bioavailability.

2 It is beneficial to retain biologically active ingredients and improve drug efficacy.

3 There is a homogenization effect in the comminution of traditional Chinese medicine compound

4 Reduce dosage and save resources of Chinese herbal medicines

5 Avoid pollution and ensure that the product meets high hygienic requirements

6 Transformation of traditional Chinese medicine extraction process

7 Broaden the dosage forms of traditional Chinese medicine

But there are many kinds of Chinese medicinal materials, according to the incomplete statistics of "Compendium of Materia Medica", there are more than 2,200 kinds, and there are more than 11,000 attached prescriptions of Chinese medicines. The state of Chinese herbal medicines is complex, roughly divided into: rhizomes, whole plants, fruits, minerals, skins, fungi, animals, flowers, and others. Therefore, in the face of many types of Chinese herbal medicines with complex states, in the pulverization process, if one cannot "prescribe the right medicine" and only use one kind of pulverization method, it is obviously not enough to "break the cell wall" of Chinese herbal medicines.

According to the author's understanding, at present, most manufacturers adopt the traditional single segmental pulverization method for the "micronization" of traditional Chinese medicine, first coarse pulverization, and then superfine pulverization. There are many problems in the process. First, the process is complicated, and the fineness of crushing is difficult to meet the requirements at one time; second, after the segmental crushing reaches a certain fineness, the output of superfine crushing is low; third, the crushing temperature is too high; fourth, dust leakage during crushing and transfer , causing material and environmental pollution.

The micro-powder pulverization process of powder is actually a process in which each particle in the macro-powder is broken, broken, and miniaturized under the action of external force, which causes the performance index of the whole powder to change. The external force of material crushing is realized by means of impact, collision, shearing, grinding, dispersing and other means on the material. When choosing a crushing method, it must be determined by the nature of the crushed material and the required crushing ratio, especially the physical and chemical properties of the crushed material have a great decisive effect, and the hardness and fracture of the material are more important. , for hard and brittle materials, impact is very effective; for plant materials with fibrous characteristics, grinding and shearing methods are better. For the pulverization of micron-sized materials, it is advisable to use supersonic airflow pulverization.

Utility model content

The purpose of this utility model is to address the defects of the existing technology, and propose a combined multifunctional linkage pulverizer, which can perform fine powder pulverization (80-200 mesh), and can also directly perform wall-breaking pulverization (1-10 μm) Advanced traditional Chinese medicine pulverizing and classifying machine, while ensuring the quality of micronization, it can effectively improve the production capacity of ultrafine pulverization.

The utility model solves the technical problem through the following technical solutions: a combined multifunctional linkage crushing and grading machine, including crushing equipment, grading equipment and collection equipment connected by pipelines; machine, the grading equipment includes an airflow classifier and an airflow classification system; the inlet of the mechanical pulverizer is connected to the feeder through a feed pipe, and the outlet of the mechanical pulverizer is connected to the airflow through a powder conveying conduit. The inlet of the classification chamber of the classifier is connected, and the lower part of the air classifier communicates with the housing of the mechanical pulverizer through a return pipe, and the mechanical pulverizer and the air classifier are in a two-way communication structure; The outlet of the classifying chamber is connected with the inlet of the collection equipment through the inner channel.

The outlet of the classifying chamber of the air classifying system receives the inlet of the collection device through the inner channel.

Since the crushing chamber of the mechanical pulverizer is relatively separated from the classifying chamber, the crushed material will not stay in the crushing chamber for a long time due to the barrier of the classifying mechanism, thus avoiding the phenomenon of "over-crushing" and improving the crushing capacity. In addition, the lower part of the classification chamber can be communicated with the casing of the crushing chamber through the return pipe, so that two-way communication between the crushing chamber and the classification chamber can be formed, which helps to increase the crushing output, and further prevents the crushed materials from being damaged in the crushing chamber. Blocking and staying for too long.

Further, in the aforementioned combined multifunctional linkage crushing and grading machine, the outlet of the classifying chamber of the airflow classifier is also connected to the feed port of the pulverizing chamber of the swirling jet pulverizer through an inner channel, and the pulverizing chamber of the swirling jet pulverizing machine The feed port communicates with the airflow classification system through a pipeline, and the outlet of the classification chamber of the airflow classification system is connected to the inlet of the collecting device through an internal channel.

Further, in the aforementioned combined multifunctional linkage crushing and classifying machine, the collection equipment includes a cyclone collector and an isolation collector connected in series by pipelines, and the outlet of the isolation collector is connected to the atmosphere through an induced draft fan.

In order to achieve a further purpose, the mechanical pulverizers in the combined Chinese herbal medicine multifunctional linkage pulverizing unit of the present invention include two types.

Furthermore, in the aforementioned combined multifunctional linkage crushing and grading machine, the mechanical pulverizer includes a rotating pulverizing device installed in the pulverizing chamber casing, and the pulverizing chamber casing consists of three communicating pulverizing areas in the middle, so The above three crushing areas are respectively equipped with coaxial rotating crushing devices, and the rotating crushing devices are square pile crushing devices, swing knife crushing devices and conical knife crushing devices respectively. The first type of pulverizer is suitable for the pulverization of Chinese herbal medicine mixture.

Further, the aforementioned combined multifunctional linkage crushing and grading machine, the mechanical pulverizer also includes a rotary crushing device in the crushing chamber casing and a fixed crushing device installed on the casing and the cover plate, the rotary crushing device Respectively, the first and second floors are rotating square pile crushing devices and the third floor is a toothed swinging knife crushing device. The fixed crushing device includes a circular fixed crushing device with double-layer internal and external teeth on the front cover and a ring gear on the inner ring of the housing. The pulverizer is superimposed multi-layer multiple pulverization. The rotating and fixed occlusal pulverizing device on the first layer uses its impact performance to help pulverize various hard and large materials; The shear performance of the device and the blade is conducive to crushing various fibrous materials. The second type is suitable for the crushing of fibrous Chinese herbal medicines.

Further, the aforementioned combined multifunctional linkage crushing and grading machine, the swirling jet flow mill includes a cylindrical crushing chamber with an upper opening and a closed lower part, and four nozzle seats are symmetrically and evenly distributed on the side wall of the cylindrical crushing chamber , the lower interface of each nozzle seat is connected to the rotating air bag through the air outlet pipe; the upper part of the crushing chamber is connected to the lower part of the classification chamber of the air classifier, and the bottom of the crushing chamber is threadedly connected to the upper part of the rotating air bag. A supersonic air flow nozzle is installed inside the nozzle seat; the rotating air bag includes an air pipe outlet on the wall of the cylindrical air bag and a nut interface on the upper part. When the material enters the crushing chamber, it enters the high-speed airflow acceleration zone with the shortest distance. Driven by the high-speed airflow, it moves at a high speed and collides at the intersection of the airflow to achieve crushing.

Further, the aforementioned combined multifunctional linkage crushing and classifying machine, the flow classifier includes a classifying chamber housing, the upper part of the housing is a cylinder, and the lower part is a cone, and the diameter of the bottom surface of the cone is the same as that of the cylinder. The diameter of the bottom is consistent; the upper top plate of the housing is equipped with a machine head, and the machine head is composed of a machine head outlet fixed on the top plate, a motor arranged above the machine head outlet, and a classifying wheel driven by the motor. The grading wheel is placed in the grading chamber below the top plate, including a cavity in the middle that communicates with the outlet of the machine head through a hole in the top plate, and blades distributed at intervals on the outer periphery. The feed conduit, the outlet of the feed conduit faces upwards, is located near the middle of the lower part, and the bottom end of the lower part is connected with the return pipe. When the classifier is working, the motor drives the classifying wheel to rotate, and the powder entering the classifier from the feed pipe is dispersed in the classifier by airflow from bottom to top. The wall falls, and the return material is processed; the fine particles move to the center of the rotor, and are sucked and collected by the induced draft fan from the outlet of the machine head, thus completing the classification process.

Beneficial effects of the utility model: the structure of the cyclic feeding of the utility model not only strictly limits the "big particles", but also avoids over-grinding, so the particle size distribution of the product is narrow and the particle size is uniform; The problem of sieving can effectively complete the classification of fine powder particles. At the same time, adjusting the speed of the classification wheel of the classifier of the mechanical pulverizer and the classification system of the cyclojet jet pulverizer can maximize the production capacity of ultrafine pulverization and meet the requirements of "micronization" of traditional Chinese medicine. "Industrialization needs.

The utility model has the following advantages:

1. The organic combination of mechanical pulverization and jet pulverization can make the raw materials of Chinese herbal medicines be directly pulverized until the "cells" are broken.

2. This unit is a multi-purpose machine, which can not only carry out fine powder crushing (80-200 mesh), but also directly carry out wall-breaking crushing (1-10μm)

3. The mechanical crushing chamber is relatively separated from the grading chamber to avoid "over-grinding". First, reduce the "overheating" generated by crushing and reduce the temperature of the crushing chamber. The second is that the effective crushing in the crushing chamber increases, which improves the crushing output.

4. The mechanically pulverized classifier and the special design of the swirl-jet classifying system have a low classifying speed. High grading accuracy.

5. Fully enclosed negative pressure operation, the powder will not leak during the crushing process, no environmental pollution, and low noise.

6. It is especially suitable for use in traditional Chinese medicine crushing workshops that meet the requirements of GMP.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a schematic structural view of the mechanical pulverizer in Fig. 1 .

Fig. 3 is a schematic structural view of the swirling jet mill in Fig. 1 .

Fig. 4 is a schematic structural view of the classifier for mechanical pulverization in Fig. 1 .

Fig. 5 is a schematic structural diagram of the classifying system of jet milling in Fig. 1 .

detailed description

The structure of the combined multi-functional linkage crushing and grading all-in-one machine of this embodiment is shown in Figure 1 to Figure 5. It is composed of flow pulverizer 9, air classification system 11, cyclone collector 13, isolation collector 15 and induced draft fan 18. Wherein, a mechanical pulverizer discharge pipe 5 and a feed return pipe 6 are arranged between the mechanical pulverizer 4 and the classifier 7 . The feed port of the crushing chamber of the mechanical crushing machine 4 is connected to the feeder 2 through the feed pipe 3, and the discharge port is connected to the entrance of the classification chamber of the mechanical crushing classifier 7 through the mechanical crushing discharge pipe 5, and the mechanical crushing classifier 7 The lower part of the classification chamber communicates with the casing of the mechanical crushing chamber through the return pipe 6, forming a two-way communication structure. The outlet of the classifying chamber of the mechanically pulverized classifier 7 is respectively connected to the third connecting pipe 10 and the fourth connecting pipe 13 through the second connecting pipe 8, and the outlet of the fourth connecting pipe is connected to the inlet of the collecting equipment. Wherein, the third connecting pipe 10 is connected with the air classifier. The outlet of the classification chamber of the airflow classifier is also connected to the feed port of the crushing chamber of the swirl-jet flow mill through the inner passage, and the feed port of the crushing chamber of the swirl-jet flow grinder is connected with the airflow classification system through a pipeline, and the airflow classification system The outlet of the classification chamber is connected to the inlet of the collection device via an internal channel.

The collection equipment is composed of a cyclone collector 13 and an isolation collector 15 connected in series through a fifth connecting pipe 14, and the outlet of the isolation collector is connected to an induced draft fan 18 through a sixth connecting pipe 16 to ventilate to the atmosphere. Simultaneously, the front end of induced draft fan is also equipped with induced draft fan muffler 17.

The mechanical pulverizer in the unit of this embodiment is shown in Figure 2, and the pulverizer housing 2-2 is divided into three comminuting areas connected in the middle by the partition plate 12-7 and the partition plate 22-13——the first pulverizing zone 2 -3. The second crushing zone 2-8 and the third crushing zone 2-12. The shaft section located in the first crushing area is equipped with a hammer-type crushing device composed of a hammer head bracket 2-4 and a hammer head 2-5, and the corresponding inner wall of the first crushing area is fixed with a spur gear 2-6; The rotating shaft section of the district is installed with the swinging knife bracket 2-9 and the swinging knife 2-10 constituted crushing device, and the inner wall of the corresponding second crushing area is fixed with a spur gear ring 2-11; the rotating shaft section at the third crushing area is installed Cone cutter support 2-18 and the conical cutter crushing device that cone cutter 2-14 constitutes, its corresponding third crushing zone circumference inner wall fixes bevel gear ring 2-15. The casing at one end of the third pulverizing zone is also provided with a fan chamber, and a fan blade 2-17 connected by a fan blade bracket 2-16 is fixed on the rotating shaft 2-1 passing through the chamber. When working, each crushing device can cooperate with the corresponding ring gear to play a crushing role step by step. Under the action of the fan, the powder is fed from the feed port, and then output from the discharge port after being crushed. When it is applied to the field of pharmaceutical production, it can increase the central particle diameter of 150-200 mesh powder obtained from traditional Chinese medicinal materials from the traditional crushing process to a central particle diameter of 30-40 microns, thereby greatly improving the absorption speed of active ingredients and degree of absorption.

The jet jet mill in the unit of this embodiment is shown in Figure 3. The jet jet mill consists of a swivel crushing chamber 3-10, a swivel air bag 3-4, a swivel joint 3-2, and an air inlet distribution pipe 3-7. composition. The cylindrical walls of the rotating crushing chamber 3-10 are welded to two sets of opposite supersonic nozzle seats 3-5. The upper part of the cylindrical air bag 3-4 is bolted to the lower part of the rotary crushing chamber 3-10, and the lower part of the cylindrical air bag 3-4 is connected to the upper part of the rotary joint 3-2 to form a rotatable unity. One end of the four equally divided gas distribution pipes 3-7 is connected to the supersonic nozzle seat 3-5, and the other end is connected to the cylindrical air bag 3-4. The intake pipe 3-1 is connected to the rotary joint 3-2.

When working, start the rotating crushing chamber. When the material enters the crushing chamber, the material enters the high-speed airflow acceleration area with the shortest distance. Driven by the high-speed airflow, it moves at high speed and collides at the intersection of the airflow to achieve ultrafine pulverization. The crushed mixed material enters the classification system above the rotating crushing chamber.

The classifier of the mechanical pulverizer in the present embodiment is a centrifugal type, as shown in Figure 4,

It can be seen from FIG. 4 that the classifying chamber housing is composed of an upper cylindrical upper housing 4-7 and a lower conical cone housing 4-5. The classifier head 4-9 is installed on the upper top plate. The machine head includes a machine head outlet 4-16 which is fixed on the top plate and opens to both sides, and the machine head outlet 4-16 is externally connected to a suction fan negative pressure source. The motor 4-14 is fixed above the exit 4-16 of the machine head, the output shaft of the motor is connected with the main shaft 4-10 of the grader through the coupling 4-15, and the lower end of the main shaft is fixed and installed vertically by the lock nut 4-18 Rounds 4-8. The grading wheels are located in the grading chamber below the top plate. The middle part of the grading wheel is a cavity, which communicates with the outlet of the machine head through the hole on the top plate. One side of the cone housing 4-5 in the lower part of the classification chamber penetrates the feed conduit 4-6, and the outlet of the feed conduit faces upwards and is located in the middle of the lower part. The bottom end of the cone housing 4-5 is connected with the return material tee 4-2, and the return material tee 4-2 is connected with the return material pipe 4-1 through the shut-off fan 4-4. The other end is equipped with a return ventilation pipe 4-3.

The classification system of the swirling jet mill in the present embodiment is a centrifugal type, as shown in Figure 5, as can be seen from Figure 5, the classification chamber housing consists of a cylindrical upper housing 5-6 on the top and a conical extension system on the bottom Cone shell 5-5, straight shell 5-1 form. The extension system classifier head 5-8 is installed on the upper top plate. The machine head includes an extension system head outlet 5-13 which is fixed on the top plate and opens to both sides, and the extension system head outlet 5-13 is externally connected to a suction fan negative pressure source. The motor 5-15 is fixed above the outlet 5-13 of the machine head of the extension system, and the output shaft of the motor is connected with the main shaft 5-9 of the classifier of the extension system through the coupling 5-14 of the extension system, and the lower end of the main shaft passes through the locking nut of the extension system 5-11 Fixed installation of vertical extension system grading wheels 5-7. The extension system grading wheel is located in the grading chamber below the top plate. The middle part of the grading wheel is a cavity, which communicates with the outlet of the machine head of the extension system through the hole on the top plate. One side of the housing 5-1 at the lower part of the classifying chamber penetrates into the rotating crushing chamber. An observation space 5-2 is installed on one side of the straight housing 5-1 at the lower part of the classification chamber. The tangential direction of extension system cone housing 5-5 is equipped with two symmetrical bypass air pipes.

The working process of the utility model is: start the power supply, adjust and select the required value through the electric control cabinet, and start the equipment. Place the material to be crushed from the inlet of the feeder, and transport it to the feed port of the crushing chamber of the mechanical crushing machine through the first connecting pipe. At the inlet of the machine, if the powder particles after classification are too large, they will be transported back to the shell of the mechanical pulverizer through the return pipe provided at the lower part of the air classifier for re-crushing; if it is necessary to crush the powder , the powder is sent to the jet mill through the conveying pipeline, and is discharged from the air classification system after being pulverized in the pulverizing chamber.

Practice has proved that the centrifugal classifier of this embodiment does not need to be equipped with a screen, and can classify the particle size of the product at a low rotation speed. Its circular feed structure not only strictly limits the "big particles", but also avoids over-grinding, so the particle size distribution of the product is narrow and the particle size is uniform; it solves the problem that the powder above 150 mesh is difficult to sieve, and can efficiently complete the fine powder particles At the same time, adjusting the speed of the classification wheel of the classifier of the mechanical pulverizer and the classification wheel of the cyclojet pulverizer classification system can maximize the production capacity of ultrafine pulverization and meet the industrialization needs of "micronization" of traditional Chinese medicine.

Practice has proved that the unit of this embodiment has the following advantages:

1. The organic combination of mechanical pulverization and jet pulverization can make the raw materials of Chinese herbal medicines be directly pulverized until the "cells" are broken.

2. This unit is a multi-purpose machine, which can not only carry out fine powder crushing (80-200 mesh), but also directly carry out wall-breaking crushing (1-10μm).

3. The mechanical crushing chamber is relatively separated from the grading chamber to avoid "over-grinding". First, reduce the "overheating" generated by crushing and reduce the temperature of the crushing chamber. The second is that the effective crushing in the crushing chamber increases, which improves the crushing output.

4. The mechanically pulverized classifier and the special design of the swirl-jet classifying system have a low classifying speed. High grading accuracy.

5. Fully enclosed negative pressure operation, the powder will not leak during the crushing process, no environmental pollution, and low noise.

6. It is especially suitable for use in traditional Chinese medicine crushing workshops that meet the requirements of GMP.

In addition to the implementation described above, the utility model can also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (9)

1. A combined multifunctional linkage crushing and grading machine, characterized in that: it includes crushing equipment, grading equipment and collection equipment connected by pipelines; The equipment includes an airflow classifier and an airflow classification system; the inlet of the mechanical pulverizer is connected to the feeder through a feed pipe, and the outlet of the mechanical pulverizer is connected to the classification chamber of the airflow classifier through a powder conveying conduit The inlet is connected, and the lower part of the airflow classifier communicates with the housing of the mechanical pulverizer through the return pipe, and the structure between the mechanical pulverizer and the airflow classifier is a two-way communication structure; the outlet of the classification chamber of the airflow classifier passes through the inner The channel is connected to the inlet of the collection device. 2. The combined multifunctional linkage crushing and grading integrated machine according to claim 1, characterized in that: the outlet of the classifying chamber of the airflow classifier is also connected to the feed port of the crushing chamber of the swirling jet airflow mill through an inner passage, The feed port of the pulverizing chamber of the swirl-jet airflow mill is connected to the airflow classification system through a pipeline, and the outlet of the classification chamber of the airflow classification system is connected to the inlet of the collecting device through an inner channel. 3. The combined multifunctional linkage crushing and grading integrated machine according to claim 1, characterized in that: the collection equipment includes a cyclone collector and an isolation collector connected in series by pipelines, and the exit of the isolation collector passes through The induced draft fan is connected to the atmosphere. 4. The combined multifunctional linkage crushing and grading integrated machine according to claim 1, characterized in that: the mechanical pulverizer includes a rotating pulverizing device installed in the pulverizing chamber casing, and the pulverizing chamber casing is composed of a partition plate Construct three comminuting areas connected in the middle, and the three comminuting areas are respectively equipped with coaxial rotary crushing devices, and the rotary crushing devices are square pile crushing devices, pendulum knife crushing devices and conical knife crushing devices respectively. 5. The combined multifunctional linkage crushing and grading integrated machine according to claim 4, characterized in that: the mechanical pulverizer also includes a rotating pulverizing device in the pulverizing chamber housing and a Fixed crushing device, the first and second floors of the rotary crushing device are respectively a rotating square pile crushing device and a toothed pendulum knife crushing device on the third floor; The fixed crushing device includes a circular fixed crushing device with double-layer internal and external teeth on the front cover and a ring gear on the inner ring of the housing. 6. The combined multifunctional linkage crushing and grading integrated machine according to claim 1, characterized in that: the swirl-jet airflow pulverizer comprises a cylindrical crushing chamber with an upper opening and a closed lower part, and the side wall of the cylindrical crushing chamber There are four nozzle seats symmetrically and evenly distributed on the top, and the lower interface of each nozzle seat is connected with the rotating air bag through the air outlet pipe; the upper part of the crushing chamber is connected with the lower part of the classifying chamber of the air classifier, and the crushing chamber The bottom is threadedly connected with the upper part of the rotary air bag. 7. The combined multifunctional linkage crushing and grading all-in-one machine according to claim 6, characterized in that: a supersonic air flow nozzle is installed inside the nozzle seat; the rotating air bag includes a cylindrical air bag wall The outlet of the upper air pipe, the upper nut interface. 8. The combined multifunctional linkage crushing and grading machine according to claim 1, characterized in that: the airflow classifier includes a classification chamber housing, the upper part of the housing is a cylinder, and the lower part is a cone, so The bottom diameter of the cone is consistent with the bottom diameter of the cylinder; the machine head is installed on the upper top plate of the housing, and the machine head is composed of the machine head outlet fixed on the top plate, the motor arranged above the machine head outlet, and It consists of grading wheels driven by motors. 9. The combined multifunctional linkage crushing and grading all-in-one machine according to claim 8, characterized in that: the grading wheel is placed in the grading chamber below the top plate, including a cavity in the middle that communicates with the outlet of the machine head through a hole in the top plate, The outer circumference is the vanes distributed at intervals, the overall outline is in the shape of a truncated cone with a large upper part and a smaller lower part. The lower part is inserted into the feed conduit, and the outlet of the feed conduit is upwards, located near the middle of the lower part. The bottom end of the lower part is connected to the Return tube connection.