CN108591134B - A kind of jet pump nozzle material-feeding mouth distribution device - Google Patents

Abstract

The present invention relates to a kind of jet pump nozzle material-feeding mouth distribution devices, including axis, left bearing room, right bearing room, cloth annulus and handle portion, the left and right ends of axis are co-axially mounted left bearing room and right bearing room respectively, cloth annulus, the left end connection installation handle portion of axis are installed on the axis between left bearing room and right bearing room.The invention has the advantages that need the powder that is added not fugitive dust, do not cause that the slurry concentration in jet stream Unit injector is locally excessively high, does not also need that additional energy source and power is added, securely and reliably.The present apparatus can be used for jet stream pumping system synergy, also be used directly for the auxiliary stirring cloth of the solid powder feeding device of no jet stream pumping system.The present apparatus can be widely used in the solid-liquid blending transportation in the fields such as petroleum, chemical industry, medicine, food.

Description

A jet pump nozzle feeding port distribution device

technical field

The invention relates to the field of jet pumps, in particular to a distributing device for a nozzle feed port of a jet pump.

Background technique

The jet pump is an important unit operation in the chemical industry. It is a fluid machinery and mixed conveying reaction equipment that uses the strong shear and severe turbulent diffusion between the high-speed jet and the absorbed fluid to transfer energy and mass. Due to its simple structure, stable process, convenient installation, strong process adaptability, and low production cost, its application range is becoming wider and wider. In some vacuum conditions, jet pumps can replace water ring, rotary vane, Reciprocating vacuum pump. This patent describes a solid-liquid mixed jet pump. It has the dual function of solid-liquid mixing and delivery. Its most notable feature is the transportation of solid powders, such as corn starch. If the jet pump is used to transport soluble salts with relatively stable physical and chemical properties, such as sodium sulfate, sodium carbonate, sodium chloride, etc., high efficiency will be obtained. The high-efficiency jet pump system has broad application prospects, and it can be widely used in solid-liquid mixed transportation in petroleum, chemical, pharmaceutical, food and other fields.

The research and application of jet pump has a long history, and the mixing phenomenon of jet was discovered as early as the 16th century. With the development of fluid mechanics and aerodynamic theory and applications, jet technology has also been greatly improved. As a general-purpose equipment that can generate huge economic benefits, the jet pump has shown an increasingly important role in human economic life. For many years, the jet nozzle structure, as a basic and simple physical delivery and mixing method, does not consume chemicals, has no secondary pollution, and has low operation and maintenance costs. It has always been a research hotspot by scholars at home and abroad. Nozzle invention patent. These design achievements have been applied in the fields of petroleum and chemical industry in developed countries. At present, developed countries have obtained a large amount of data through a large number of experiments and obtained many patents, which have brought them huge economic benefits. However, the design of the jet pump system must consider the expected efficiency mechanism, which is not enough in the current research; neither the numerous factors that restrict the jet efficiency and the mechanism of the jet vacuum formation, nor the optimal efficiency point formation Therefore, it is difficult to design a more energy-efficient device.

The jet pump system achieves the goal of conveying the solid-liquid mixture by the high-speed flowing liquid ejected by the jet nozzle. In this process, the feeding efficiency of the jet pump nozzle directly affects the efficiency of the jet pump system. Therefore, how to improve the jet pump system efficiency becomes crucial. It is worth noting that the jet pump nozzle feeding port distribution device will also have a certain impact on the overall efficiency of the system. For example, the powder product (such as starch) added to the jet pump nozzle is too humid, the humidity of the powder is too high due to the wet weather, and the operator's excessive feeding will cause the powder to accumulate excessively at the jet nozzle discharge port of the jet pump, commonly known as "Bulk", the powder cannot slide down freely by its own gravity, nor can it be sucked into the jet nozzle under the jet vacuum generated by the jet nozzle of the jet pump, resulting in the idling of the jet pump system, that is, the bottleneck of the efficiency of the jet nozzle. Therefore, in the absence of the jet pump nozzle feeding port distribution device, the operator cannot use the iron bar to stir and distribute the powder, because when the operator feeds the jet pump nozzle, there may be a lot of dust in the workshop, and the dust encounters an open flame. May cause an explosion. Therefore, the operator can only use wooden sticks to disperse and dredge the bottleneck of the feeding opening, which artificially increases the input of labor costs. The use of wooden sticks may cause wood chips to fall into the hopper, and it cannot solve the problem of the shredded paper and filaments on the packaging bag falling into the hopper, and the product quality is difficult to guarantee. Therefore, the traditional system design method does not increase the efficiency of distribution of the jet pump nozzle feed port, resulting in a lot of manpower and material resources, and there are potential safety hazards, which reduce the efficiency of the jet pump system, which is neither economical nor environmentally friendly.

In order to facilitate the understanding of the above content, an example is given below to illustrate the working principle of the jet pump system without the addition of the jet pump nozzle feeding port distribution device, as shown in Figure 1, in the figure: 1. Hopper; 3. Jet pump nozzle (economical type); A chamber: slurry pressurizing chamber; B chamber: vacuum mixing chamber; C chamber: expansion chamber.

The high-pressure slurry is injected into the jet nozzle through the high-pressure liquid delivery pump (3-6 atmospheric pressure) and enters its pressurizing chamber A. As the cross-sectional area of the pressurizing chamber A gradually decreases, the potential energy of the liquid decreases and the kinetic energy increases, so that the jet velocity of the liquid increases greatly when the liquid passes through the outlet of the pressurizing chamber A, forming a jet effect. The high-speed flowing liquid is sprayed into a diffused shape through the mixing chamber B, the space occupied volume increases, and part of the air is entrained into the expansion chamber C, the space volume of the liquid is further increased, and then enters the delivery pipe with the same diameter as the outlet end of C. The high-speed flow of liquid creates a vacuum in the process of passing through the pumping chamber A to the expansion chamber C. The solid powder (such as starch) is added to the vacuum mixing chamber B through the hopper 1, and the powdery solid that slides down freely is sucked into the mixing chamber and mixed with the continuously entering high-speed slurry into the expansion chamber C. The mixed slurry returns to the mixing tank through the conveying pipeline and is sucked by the high-pressure liquid conveying pump again, and then hits the jet nozzle to form a cycle.

The disadvantages of the above technology are:

The powder can be evenly distributed before entering the jet pump, and it does not accumulate into a block, and has good fluidity. The traditional system design method is to default the solid powder into the hopper and flow into a free sliding flow state, and directly enter the jet pump nozzle without synergizing the distribution state of the powder during the flow process, resulting in a large amount of fluid kinetic energy and potential energy in vain. Waste, but also makes the system less efficient. Intuitively, the powder product (such as starch) added into the jet pump nozzle has excessive humidity, the humidity of the powder is too high due to wet weather, and the operator's excessive feeding will cause excessive accumulation of powder at the feed port of the jet pump jet nozzle. Agglomeration, commonly known as "clumps", results in that the powder cannot slide down freely by its own gravity, nor can it be sucked into the jet nozzle under the action of the jet vacuum generated by the jet nozzle of the jet pump, causing the jet pump system to run idly, that is, the efficiency of the jet nozzle is generated. bottleneck. Even the strings, fibers and packaging material fragments on the packaging bag may sometimes enter the jet nozzle of the jet pump, which seriously affects the quality of the product, is neither economical nor environmentally friendly, and has potential safety hazards.

In fact, the jet pump nozzle in Figure 1 is an economical jet pump nozzle sub-machine obtained by the patent "High-efficiency jet nozzle with continuously adjustable jet nozzle position" (ZL 201410539286.0) as the mother machine. It is a jet nozzle with relatively high efficiency obtained by the author through long-term practical application and experiments. In contrast, its efficiency is lower than that of a jet pump nozzle equipped with a jet pump nozzle feeding port distribution device. Therefore, the above technology has obvious defects.

SUMMARY OF THE INVENTION

The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a jet pump nozzle feeding port distribution device that can improve the effect of distribution, improve work efficiency, reduce energy consumption and ensure safe use.

The purpose of this invention is to realize through the following technical means:

A distributing device for a nozzle feed port of a jet pump, characterized in that it comprises a shaft (2-14), a left bearing chamber, a right bearing chamber, a distributing ring (2-9) and a handle part, and the left and right ends of the shaft are A left bearing chamber and a right bearing chamber are installed on the shaft, a cloth ring is installed on the shaft between the left bearing chamber and the right bearing chamber, and the left end of the shaft is connected with the installation handle part.

Moreover, the right bearing chamber includes a right bearing chamber shell (2-15), a third bearing (2-5c), a third shaft sleeve (2-13), a nut (2-12), a retaining ring (2- 10) and screw caps (2-11), the right end of the shaft is coaxially threaded into the housing of the right bearing chamber, and the shaft located inside the housing of the right bearing chamber is coaxially fitted with the third bearing and the third shaft from left to right. Sleeve and nut, and the outer ring of the third bearing is close to the left side of the right bearing chamber shell; the retaining ring (2-10) is coaxially installed inside the right bearing chamber shell, and the retaining ring is against the right side of the third bearing outer ring; the screw The stuffing cover is coaxially installed on the right end of the right bearing housing shell, and is tightened against the retaining ring.

Moreover, the left bearing chamber includes a left bearing chamber housing (2-8), a second bearing (2-5b), a second bushing (2-6), a first bearing (2-5a), a first shaft Sleeve (2-4), spring retaining ring for shaft (2-3), polypropylene dust retaining ring (2-1), retaining ring (2-7) and transparent cover (2-2), the left end of the shaft is the same as The shaft is installed in the shell of the left bearing chamber, and the second bearing, the second bushing, the first bearing, the first bushing, and the spring collar for the shaft are coaxially fitted on the shaft inside the left bearing chamber shell from right to left. And a polypropylene dust retaining ring; a retaining ring is coaxially installed in the left bearing chamber shell between the first bearing and the second bearing, the retaining ring is located on the outside of the second bushing, and the left and right ends of the retaining ring are respectively Tighten the first bearing and the second bearing; a transparent cover is coaxially installed on the leftmost end of the left bearing chamber shell, and the right end of the transparent cover bears against the left end face of the first bearing.

Moreover, the handle part includes a crank handle (2-25) and a polypropylene sleeve handle (2-23), the upper end of the crank handle is fixed on the leftmost end of the shaft by a screw (2-26), and the lower end of the crank handle passes through The polypropylene sleeve handle is bolted together, and the axis of the crank handle and the axis of the polypropylene sleeve handle are set vertically.

Moreover, a horizontal hole (2-27) is formed on the upper end of the crank handle, the leftmost end of the shaft is inserted into the horizontal hole, and a vertical hole communicated with the horizontal hole is formed on the upper end of the crank handle. Insert screws in straight holes.

Moreover, the bolts (2-20) pass through the polypropylene sleeve handle (2-23), the left polyvinyl chloride anti-collision gasket (2-24a), and the lower part of the crank handle (2-25) in turn. The through hole (2-28) and the right PVC crash pad (2-24b) connect the crank handle to the polypropylene sleeve handle.

Moreover, the left end of the bolt is fastened by a washer (2-22) and a nut (2-21), and the right end of the bolt is fixed by an iron wire inserted into the small hole on the bolt.

Moreover, it also includes a circular tube die, which is a detachable circular tube composed of two half-tile circular tube die (2-29) with the same size and shape, the diameter of which is the same as that of the left bearing chamber shell (2-8). ) is the same as the outer diameter of the right bearing housing (2-15), and the inner diameter is equal to the maximum diameter of the shaft (2-14) between the left and right bearing housings; before welding the cloth ring on the shaft, the circular tube The die is mounted on the shaft between the left and right bearing housings.

The advantages and positive effects of the present invention are:

1. This device can make full use of the fluid kinetic energy and potential energy when the powder is poured into the hopper to swing left and right to form the effect of automatic distribution, and does not need to add additional energy power to obtain the best process adaptability to achieve maximum work. efficiency, to achieve the goal of high efficiency and energy saving.

2. The device can realize that the powder can freely slide down by its own gravity and the jet vacuum generated by the jet nozzle of the jet pump, without causing the jet pump system to run idly.

3. The device has strong technological adaptability and is easy to operate. When there is a serious "clump" situation, you can turn the handle left and right with your hands or feet to rotate the auxiliary cloth without using a wooden stick, which prevents the sawdust from falling into the hopper, thus ensuring the quality of the product.

4. The device can wind the cords and filaments on the powder packaging bag, and can also intercept larger pieces of packaging material, so it can achieve energy saving and environmental protection.

5. The operator can judge whether the powder feeding is normal by observing the left and right swing of the handle, and can also judge whether the jet vacuum has reached the expected vacuum degree. Therefore, the device can realize the visual monitoring of the efficiency of the jet pump system.

6. The device has low production cost, good effect and easy application.

7. The design of this device takes into account the explosion-proof factor, and also considers the possibility of open fire caused by misoperation and passionate operation, so the safety and reliability of this device is very high.

8. The device can also be directly used for the auxiliary distribution of the hopper with the characteristics of gravity impact feeding without the jet pump nozzle. Therefore, it has stronger technological adaptability and can be widely used.

9. The device has strong flexibility in use. If the handle is removed, and then the coupling and explosion-proof motor are connected, continuous automatic production can be realized.

10. After using this device, the powder can be evenly distributed before entering the nozzle of the jet pump, and it will not accumulate into lumps and has good fluidity. The powder that needs to be added does not raise dust, does not cause the slurry concentration in the jet pump nozzle to be locally too high, and does not need to add additional energy and power, which is safe and reliable. The device can be used to increase the efficiency of the jet pump system, and can also be directly used for the auxiliary stirring and distribution of the solid powder feeding device without the jet pump system. Therefore, the device can be widely used in solid-liquid mixed transportation in the fields of petroleum, chemical industry, medicine, food, etc.

Description of drawings

Fig. 1 is the working principle diagram of the jet pump nozzle without adding the jet pump nozzle feeding port distribution device;

Figure 2 is the outline assembly drawing of the jet pump nozzle system equipped with the jet pump nozzle feeding port distribution device;

Fig. 3 is the assembly diagram of the jet pump nozzle feeding port distribution device and the hopper;

Fig. 4 is the partial enlarged assembly drawing of Fig. 3;

Fig. 5 is the A-A direction sectional view of Fig. 4;

Fig. 6 is the front view of the transparent cover;

7 is a cross-sectional view of a see-through cover;

Figure 8 is a front view of the crank handle;

Figure 9 is a sectional view of the crank handle;

Figure 10 is a sectional view (enlarged schematic view) taken along the line B-B of Figure 8;

Figure 11 is a schematic diagram of a half tile round tube mold;

FIG. 12 is a side view (partial cross-section) of FIG. 11 .

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments are descriptive, not restrictive, and cannot limit the protection scope of the present invention.

A distributing device for a nozzle feed port of a jet pump, comprising a shaft (2-14), a left bearing chamber, a right bearing chamber, a distributing ring (2-9) and a handle part, and the left and right ends of the shaft are respectively coaxially mounted with left bearings chamber and right bearing chamber, a cloth ring is installed on the shaft located between the left bearing chamber and the right bearing chamber, and the left end of the shaft is connected to the installation handle part. The structure and connection relationship of each part are described in detail below:

(1) The right bearing chamber includes the right bearing chamber shell (2-15), the third bearing (2-5c), the third bushing (2-13), the nut (2-12), the retaining ring (2- 10) and screw caps (2-11), the right end of the shaft is coaxially threaded into the housing of the right bearing chamber, and the shaft located inside the housing of the right bearing chamber is coaxially fitted with the third bearing and the third shaft from left to right. Sleeve and nut, and the outer ring of the third bearing is close to the left side of the housing of the right bearing chamber; the retaining ring is coaxially installed inside the housing of the right bearing chamber, and the retaining ring is against the right side of the outer ring of the third bearing; the screw cap is coaxially installed on the right end of the right bearing housing housing and tighten against the retaining ring.

(2) The left bearing chamber includes a left bearing chamber shell (2-8), a second bearing (2-5b), a second shaft sleeve (2-6), a first bearing (2-5a), a first shaft Sleeve (2-4), spring retaining ring for shaft (2-3), polypropylene dust retaining ring (2-1), retaining ring (2-7) and transparent cover (2-2), the left end of the shaft is the same as The shaft is installed in the shell of the left bearing chamber, and the second bearing, the second bushing, the first bearing, the first bushing, and the spring collar for the shaft are coaxially fitted on the shaft inside the left bearing chamber shell from right to left. And a polypropylene dust retaining ring; a retaining ring is coaxially installed in the left bearing chamber shell between the first bearing and the second bearing, the retaining ring is located on the outside of the second bushing, and the left and right ends of the retaining ring are respectively Tighten the first bearing and the second bearing; a transparent cover is coaxially installed on the leftmost end of the left bearing chamber shell, and the right end of the transparent cover bears against the left end face of the first bearing.

(3) The described handle part comprises a crank handle (2-25) and a polypropylene sleeve handle (2-23), and the upper end of the crank handle is fixed on the leftmost end of the shaft by a screw (2-26), and its specific structure is: A horizontal hole (2-27) is made on the upper end of the crank handle, and the leftmost end of the shaft is inserted into the horizontal hole, and a vertical hole connected with the horizontal hole is made on the upper end of the crank handle. Install the screws.

The lower end of the crank handle is connected to the polypropylene sleeve handle by bolts, and the axis of the crank handle and the axis of the polypropylene sleeve handle are vertically arranged. Bolts (2-20) pass through the polypropylene sleeve handle, the left PVC anti-collision gasket (2-24a), the through hole (2-28) made in the lower part of the crank handle, and the right PVC anti-collision gasket in sequence Tab (2-24b) connects the crank handle to the polypropylene sleeve handle. The left end of the bolt is fastened with a washer (2-22) and a nut (2-21), and the right end of the bolt is fixed by an iron wire (2-19) inserted into the small hole on the bolt.

⑷. The device also includes a circular tube die, which is a detachable circular tube composed of two half-tile circular tube die (2-29) with the same size and shape, each half-tile circular tube die is Make mounting holes. The diameter of the round tube mold is the same as the outer diameter of the left and right bearing chamber shells, and the inner diameter is equal to the maximum diameter of the shaft between the left and right bearing chamber shells; before welding the cloth ring on the shaft, the round tube mold Mounted on the shaft between the left bearing housing housing and the right bearing housing housing.

The assembly process of the jet pump nozzle feeding port distribution device (as shown in Figure 5):

⑴. Right bearing chamber installation: Pass the shaft (2-14) through the right bearing chamber shell (2-15); install the third bearing (2-5c) on the shaft on the right hand side, and install the third bushing ( 2-13), tighten the nut and the spare nut (2-12), and pull the shaft back to the left until the outer ring of the third bearing and the left side of the housing of the right bearing chamber are solid, and then push the retaining ring (2-10). The inside of the right bearing housing is against the right side of the outer ring of the bearing. Then, tighten the screw cap (2-11) against the retaining ring. The installation of the right bearing housing is completed.

(2) Installation of the left bearing chamber: Set the left bearing chamber shell (2-8) on the shaft (2-14), push the second bearing (2-5b) to the innermost end of the right side of the left bearing chamber shell, and install The second sleeve (2-6), install the retaining ring (2-7), install the leftmost first bearing (2-5a) on the shaft, and connect it with the second sleeve (2-6) and Make sure the retaining ring (2-7) is firm, install the first bushing (2-4) and fasten it with the shaft spring clip (2-3), and use bolts, nuts and washers (2-16, 2-17) , 2-18) Tighten the transparent cover (2-2) on the left bearing housing shell, install the polypropylene dust retaining ring (2-1) on the shaft, use the screws (2-26) to fix the crank (2-26). 2-25) fixed on the shaft. Use the bolts (2-20) to pass through the polypropylene sleeve handle (2-23), the left PVC anti-collision gasket (2-24a), the crank handle (2-25) and the right PVC anti-collision gasket in sequence Sheet (2-24b), and then tighten with washer (2-22) and nut (2-21). Finally, thread the wire (2-19) through the small hole in the bolt (2-20) to prevent the nut (2-21) from disengaging. The installation of the left bearing housing is completed.

⑶. Making round tube mould: The so-called round tube mould is an auxiliary installation tool, it is a detachable round tube composed of two half tile round tube moulds (as shown in Figure 11 and Figure 12) with the same size and shape , whose diameter is the same as the outer diameter of the left and right bearing housing housings (2-8 and 2-15), and the inner diameter is equal to the maximum diameter of the shaft (2-14) between the left and right bearing housing housings. Once fabricated, mount it on the shaft between the left and right bearing housing housings. The purpose of installing the round tube mold is to keep the center axis of the left and right bearing chambers consistent with the center axis of the shaft (2-14), and to ensure that the distribution device of the jet pump nozzle feed port is welded to the assembly of the hopper and the flange (4). ) does not produce welding deformation, and also prevents the device from rotating jamming.

⑷.Welding: After spot welding the jet pump nozzle feeding port distribution device equipped with the round tube mold to the assembly of the hopper and the flange, rotate the handle of the jet pump nozzle feeding port distribution device to observe whether there is a welding card. resistance and deformation. If the handle rotates normally, fully weld the distribution device of the jet pump nozzle feed port on the hopper, otherwise, it is necessary to adjust the tightness of the jet pump nozzle feed port distribution device and then fully weld it. After welding, remove the half-tile round tube mold, and spot weld the cloth ring (2-9) on the shaft (2-14). At this point, the welding is over. Finally, install the welded together hopper and jet pump nozzle feed opening assembly (see Figure 3) with the jet pump nozzle (3).

The working principle of the distribution device at the feed port of the jet pump nozzle (as shown in Figure 3):

⑴. Pour the powder into the hopper 1.

⑵. When the powder is poured into the hopper, under the impact of its own gravity, the shaft has a high rotation sensitivity due to the assistance of the bearing. Therefore, the material distribution device at the discharge port of the jet nozzle will produce rotational motion. The rotary motion is affected by the self-weight of the handle of the distributing device at the discharge port of the jet nozzle, and will swing left and right to form the effect of automatic distributing. Therefore, the device can realize automatic distributing without additional power in general.

⑶. When there is a serious "clumpy material" situation, you can turn the handle left and right with your hands or feet to rotate the auxiliary material. The handle drives the rocker to rotate, and the rotation angle of the rocker should preferably not exceed 135°. The handle can easily drive the shaft to rotate, and the shaft drives the mutually perpendicular cloth rings to rotate, and the cloth rings distribute the powder at the feeding port.

⑷. The high-pressure slurry is injected into the jet nozzle through the high-pressure liquid delivery pump (3-6 atmospheric pressure) and enters its pressurizing chamber A. As the cross-sectional area of the pressurizing chamber A gradually decreases, the potential energy of the liquid decreases and the kinetic energy increases, so that the jet velocity of the liquid increases greatly when the liquid passes through the outlet of the pressurizing chamber A, forming a jet effect. The high-speed flowing liquid is sprayed into a diffused shape through the mixing chamber B, the space occupied volume increases, and part of the air is entrained into the expansion chamber C, the space volume of the liquid is further increased, and then enters the delivery pipe with the same diameter as the outlet end of C. The high-speed flow of liquid creates a vacuum in the process of passing through the pumping chamber A to the expansion chamber C. The solid powder (such as starch) is fed into the vacuum mixing chamber B through the hopper 1 and the jet nozzle discharge port distribution device 2, and the powdery solid that slides down freely is sucked into the mixing chamber, and is mixed with the continuously entering high-speed slurry and then enters the expansion chamber. C. The mixed slurry returns to the mixing tank through the conveying pipeline and is sucked by the high-pressure liquid conveying pump again, and then hits the jet nozzle to form a cycle.

Claims (8)

1. a kind of jet pump nozzle material-feeding mouth distribution device, it is characterised in that: including axis (2-14), left bearing room, right bearing room, Cloth annulus (2-9) and handle portion, the left and right ends of axis are co-axially mounted left bearing room and right bearing room respectively, are being located at left axle Hold installation cloth annulus on the axis between room and right bearing room, the left end connection installation handle portion of axis.

2. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 1, it is characterised in that: the right bearing Room includes right bearing chamber enclosure (2-15), 3rd bearing (2-5c), third axle sleeve (2-13), nut (2-12), retaining ring (2-10) With screw boring cover (2-11), the right end of axis is coaxially installed in right bearing chamber enclosure, on the axis inside right bearing chamber enclosure It is sequentially coaxially set with 3rd bearing, third axle sleeve and nut, and the outer ring of 3rd bearing and right bearing chamber enclosure from left to right The left side is by real；Retaining ring (2-10) is coaxially mounted to inside right bearing chamber enclosure, and retaining ring is withstood on the right of 3rd bearing outer ring；Screw Boring cover is coaxially mounted to the right end of right bearing chamber enclosure, and tightens and withstand retaining ring.

3. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 1, it is characterised in that: the left bearing Room includes left bearing chamber enclosure (2-8), second bearing (2-5b), the second axle sleeve (2-6), first bearing (2-5a), the first axle sleeve (2-4), axis spring collar (2-3), polypropylene dustproof retaining ring (2-1), retaining ring (2-7) and transparent cover (2-2), the left end of axis are coaxial Be installed in left bearing chamber enclosure, on the axis inside left bearing chamber enclosure from right to left sequentially coaxially be set with second bearing, Second axle sleeve, first bearing, the first axle sleeve, axis spring collar and polypropylene dustproof retaining ring；In first bearing and the second axis A retaining ring is co-axially mounted in left bearing chamber enclosure between holding, which is located at the outside of the second axle sleeve, and the left and right of retaining ring Both ends hold out against first bearing and second bearing respectively；A transparent cover, the transparent cover are co-axially mounted in the left end of left bearing chamber enclosure Right end withstand the left side of first bearing.

4. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 1, it is characterised in that: the handle portion Dividing includes rocking handle (2-25) and polypropylene sleeve handle (2-23), and the upper end of rocking handle is fixed on the most left of axis by screw (2-26) Polypropylene sleeve handle is bolted in end, the lower end of rocking handle, and the axis of rocking handle and the axis of polypropylene sleeve handle are vertical Straight setting.

5. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 4, it is characterised in that: the rocking handle A lateral aperture (2-27) is produced in upper end, and the left end of axis is installed in the lateral aperture, and one and level are produced in the upper end of rocking handle The vertical holes of hole connection, installs screw in the vertical holes.

6. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 4, it is characterised in that: the bolt (2-20) sequentially passes through polypropylene sleeve handle (2-23), left polyvinyl chloride anticollision gasket (2-24a), the lower part rocking handle (2-25) Made through-hole (2-28) and right polyvinyl chloride anticollision gasket (2-24b) connect rocking handle with polypropylene sleeve handle.

7. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 4 or 6, it is characterised in that: the spiral shell Using gasket (2-22) and nut (2-21) fastening, the right end of bolt passes through the iron wire that is installed on bolt in aperture for the left end of bolt It is fixed.

8. a kind of jet pump nozzle material-feeding mouth distribution device according to claim 1, it is characterised in that: further include round tube Mould, the detachable round tube which is made of the identical half-watt round tube mould (2-29) of two size shapes, Diameter is identical as left bearing chamber enclosure (2-8) and right bearing chamber enclosure (2-15) outer diameter, and internal diameter is equal to left bearing chamber enclosure and the right side The maximum gauge of axis (2-14) between bearing chamber enclosure；Before welding cloth annulus on axis, round tube mould is mounted on left bearing On axis between chamber enclosure and right bearing chamber enclosure.