JPH07293479A - Screw pump and carrier passage for particulate matter mixed liquid using it - Google Patents

Abstract

PURPOSE:To provide an inexpensive screw pump which can exhibit enough carrying ability without any problem such as complication and subdivision of a structure and a carrier passage using it. CONSTITUTION:A screw member 6 provided with a spiral blade 5 formed around its rotary shaft 4 is housed in a cylinder causing 3 having a loading port 1 and a delivering port 2 on its both ends parts and having a diameter larger than these of these ports and the delivering port 2 is formed crosswise in the cylindrical casing 3. This screw pump 137 is so disposed in a part of a carrier passage for carrying particulate matter mixing liquid in such a way that at least a part of the spiral blade 5 of the screw member 6 faces to an area in which the particulate matter mixing liquid staying in this carrier passage is supplied and filled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw pump, and more particularly, to a granular material mixture liquid obtained by mixing granular materials of rice and water or liquid for cleaning or treating the same in a vertical passage. The present invention relates to a draining shooter device for carrying.

[0002]

2. Description of the Related Art Rice is washed during rice cooking and may be treated with various liquids to improve its quality. On the other hand, with the recent development of the restaurant industry, large quantities of rice are being industrially cooked. When cooking rice in such fields, rice and the like are pipe-transported together with washing water, treatment liquid, or immersion water to be transported to the next step.

As such a transport path, a vertical transport path is often used because it is said that a flat space for installing equipment or a reduction in space is required.

In order to convey the mixed liquid of particulate matter through this vertically oriented conveying path, a pressure feeding method using a spiral pump or the like can be used. However, if this is used abundantly, it causes fatigue to rice and the like, and there is a problem that it becomes fine rice. In particular, since the rice after swelling is swollen by water absorption and is softened, it becomes easy to make rice into a fine grain to convey it, which is a further serious problem.

Therefore, rice is transported while being drained by a liquid-permeable belt conveyor, and a mono pump is used to transport rice as a granular liquid mixture.

[0006]

However, the belt conveyor cannot be vertically conveyed, and the belt conveyor is installed in an inclined state in order to obtain a height difference. For this reason, a long belt conveyor is required, the equipment cost is high, and the installation space is large, resulting in poor space utilization efficiency.

Further, the mono-pump is expensive and expensive to repair, and the sleeve in the pump is reciprocally moved by revolving the continuous rotary body having a curved shape to replenish and replenish the pump. The granular material mixed liquid is conveyed to the downstream, but the conveying ability is low. For this reason, if it is attempted to exert the required transporting ability, the rice will be overloaded and the rice will be caught between the rotating body and the sleeve.

[0008] Therefore, the main object of the present invention is to provide an inexpensive screw pump that exhibits a sufficient conveying capacity without the problem of rice milling without complicating the structure and a granular material mixed liquid conveying path using the screw pump. It is what

[0009]

Means for Solving the Problems In order to achieve the above object, a screw pump of the present invention has an inlet and a discharge port at both ends, and a cylindrical casing having a diameter larger than these,
It is characterized in that a screw body having a spiral blade formed around the rotary shaft is built in, and the discharge port is formed laterally in a cylindrical casing.

A receiving surface is provided around the rotational axis of the screw body for receiving the conveyed product conveyed by the spiral blade by the screw body at the position of the discharge port, and the conveyed product is located immediately before the receiving surface to discharge the conveyed product. It is preferable that the blade for scraping to the side is provided on the rotary shaft of the screw body.

More preferably, the receiving surface is provided on the rotary shaft of the screw body.

In order to achieve the above-mentioned object, the granular material mixed liquid conveying path of the present invention is filled with the granular material mixed liquid in the conveying path to a part of the conveying path for conveying the granular material mixed liquid. It is characterized in that the screw pump in any one of the above states is provided so that at least a part of the spiral blade of the screw body is exposed in the area to be filled.

The screw pump may be provided above the vertically-oriented transport path.

[0014]

In the above-described structure of the screw pump of the present invention, the discharge port is laterally oriented, and the rotary shaft of the screw body is simply extended in the axial direction without passing through the discharge port so as to be exposed to the outside of the cylindrical casing and connected to the drive source. As a result, both the introduction port and the discharge port can be set to the minimum opening by effectively using the entire opening for the passage cross-sectional area, and the object to be conveyed can be introduced and discharged without obstruction or reasonably, and the screw can be used. The body is provided with a spiral blade around the axis of rotation, and by forming it with an outer diameter that corresponds to any large inner diameter of the cylindrical casing that is larger in diameter than the inlet and outlet, The object to be conveyed that is introduced into the cylindrical casing does not fall below the passage cross-sectional area of the conveyance path until it is introduced into the introduction port and after being discharged from the discharge port, and therefore the passage cross-sectional area becomes small. Without exerting extra pressure or resistance on the transported object, because it exerts a transporting force while reliably capturing the transported object by the spiral blade formed to any large outer diameter around the rotation axis, Even if the material to be transported is a granular liquid mixture in which granular materials such as rice are mixed, it can be reliably transported without force or biting. With these, a simple and inexpensive structure with no special shape or movement is used. It is possible to satisfy a sufficient carrying capacity without the problem that rice, etc. becomes fine rice.

A receiving surface is provided around the rotation axis of the screw body for receiving the conveyed product conveyed by the spiral blade by the screw body at the discharge port position portion, and the conveyed product is located immediately before the receiving surface to discharge the conveyed product. With the configuration in which the blade for scraping to the side is provided on the rotating shaft of the screw body, at the same time that the object to be conveyed that the screw body conveys to the discharge port side is received at the discharge port position portion by the receiving surface, A blade provided on the rotating shaft of the screw body works on the stopped conveyed object and scrapes out the conveyed object toward the sideways discharge port, so that the conveyed object is conveyed in a compact curved path at a right angle from the cylindrical casing to the discharge port. Can be discharged smoothly, and the size can be reduced.

When the receiving surface is provided on the rotating shaft of the screw body, there is no sliding portion between the receiving surface and the rotating shaft of the screw body and the blade, and even if the transported object is a granular material, it is bitten. It is possible to avoid such a complicated situation.

In the above-mentioned configuration of the granular material mixed liquid conveying path of the present invention, a screw body is provided in a part of the conveying path for conveying the granular material mixed solution in a region where the granular material mixed solution is replenished and filled. The screw pump in any one of the above states is positioned so that at least a part of the spiral blade of is exposed, and the spiral blade of the screw body reliably works on the granular material mixed liquid in the conveying path, and corresponds to the configuration of each screw pump. The desired transport can be achieved.

Even if the screw pump is provided at the upper part of the vertically-oriented conveying path, the spiral blade of the screw body surely acts on the mixed liquid of the particulate matter, conveys it vertically and discharges it from the horizontally-discharging outlet. Can be supplied to the next.

[0019]

EXAMPLES The screw pump of the present invention and the granular material mixture liquid conveying path using the same will be specifically described below with reference to examples.

1 to 3 show a screw pump as an embodiment of the present invention. Specifically, as shown in the drawing, a screw body 6 having a spiral blade 5 formed around a rotating shaft 4 in a cylindrical casing 3 having an inlet 1 and an outlet 2 at both ends and having a diameter larger than these. Built in. Further, the discharge port 2 is formed laterally in the cylindrical casing 3.

According to such a basic structure, the discharge port 2 is lateral, and the rotary shaft 4 of the screw body 6 is simply extended in the axial direction without passing through the discharge port 2 to the outside of the cylindrical casing 3 as shown in FIGS. As shown in FIG. 3, the drive source 7 can be connected to the drive port 7 so that the entire opening of both the inlet 1 and the outlet 2 can be effectively utilized for the passage cross-sectional area and set to the minimum opening. The transported object can be introduced and discharged without difficulty.

At the same time, the screw body 6 rotates the rotary shaft 4
By providing the spiral blade 5 around it, the cylindrical casing 3 having a larger diameter than the introduction port 1 and the discharge port 2 is formed with an outer diameter corresponding to any large inner diameter, The object to be conveyed introduced into the tubular casing 3 until it is introduced into the introduction port 1 and the discharge port 2
After discharging from, without falling below the passage cross-sectional area of the transport path,
Therefore, the object to be conveyed can be securely held by the spiral blade 5 formed to have a large outer diameter around the rotary shaft 4 without exerting an extra pressure or resistance on the object to be conveyed due to the reduction of the cross-sectional area of the passage. Since the conveying force is exerted while capturing, even if the conveyed material is a granular material mixed liquid in which granular materials such as rice are mixed, it can be reliably conveyed without force or biting.

As a result, with a simple and inexpensive structure that does not use a member having a special shape or movement, it is possible to satisfy a sufficient conveying ability without the problem that rice or the like becomes fine rice.

The tubular casing 3 contains a screw body 6 and has a main body casing 3a having a discharge port 2 at its upper end.
And the flange connecting portion 3 at the lower end of the main body casing 3a.
an inlet casing 3c which is bolted by b and is tapered in a funnel shape from the flange connecting portion 3b toward the inlet 1 at the lower end; and a bearing lid member 3e which is bolted to the upper end of the main body casing 3a by a flange connecting portion 3d. The rotary shaft 4 is composed of a rotary shaft base 4a rotatably held by bearings 11 on the upper and lower parts of the bearing lid member 3d, and a rotary shaft main body 4b having a spiral blade 5. The shaft base portion 4a and the rotary shaft main body portion 4b are bolted to each other by a flange connecting portion 4c in the upper end portion of the main body casing 3a, and the rotary shaft base portion 4a and the bearing lid member are provided between the flange connecting portion 4c and the bearing lid member 3d. 3d, a seal member 12 between the flange coupling portion 4c and the bearing lid member 3d, and a seal member 14 between the rotary shaft base portion 4a. Flanged portion of the shaft body portion 4b 4
The screw body 6 and the main body casing 3a are also provided between c and the lower portion thereof and the flange 4d that forms the receiving surface 15 that receives the conveyed object conveyed by the screw body 6 at the position of the discharge port 2. A seal member 16 is provided between them. Further, drain holes 17 are provided at two locations on the outer circumference at the height position facing the tubular fitting portion 13 at the upper end of the main body casing 3a.

In the tubular casing 3, the upper end of the bearing lid member 3d is connected to the lower surface of the frame portion 21a of the frame 21, and the frame portion 2
A geared motor as a drive source 7 is connected to the upper surface of 1a, and the output shaft 23 of the motor 7 is projected into the frame portion 21a.
And the rotary shaft base 4a are connected by a coupling 24,
The screw body 6 can be rotationally driven at a required speed. Further, on the inner circumference of the upper end of the inlet casing 3c,
As shown in FIG. 1 and FIG. 3, a bearing member 25 fitted and welded to the inner circumference is provided, and the rotation of the screw body 6 is performed on the bearing portion 25b which is located at the center of the bearing member 25 and which has a transport passage hole 25a around it. The lower end of the shaft 4 is bearing.

However, the structure of the cylindrical casing 3, the bearing of the screw body 6, the connection structure with the drive source, and the like can be variously changed, and the drive source can drive the screw body 6 to rotate. If it exists, various things can be adopted.

As described above, the screw body 6 serves as the discharge port 2
A receiving surface 15 for receiving the conveyed object conveyed to the side at the position of the discharge port 2 is provided around the rotating shaft 4, and the conveyed object is discharged immediately before the receiving surface. By providing the blade 26 for scraping to the side on the rotary shaft 4 of the screw body 5, the receiving surface 15 receives the conveyed object at the position of the discharge port 2, and at the same time, the received conveyed object is screwed. The blades 26 provided on the rotating shaft 4 of the body 6 work to scrape out the transported object toward the discharge port 2 in the lateral direction, so that the transported object can be transferred along the compact curved path from the cylindrical casing 3 to the discharge port 2 at a right angle. It can be discharged smoothly,
The screw pump can be miniaturized.

When the receiving surface 15 is provided on the rotary shaft 4 of the screw body 6 as shown in FIGS. 1 and 2, the receiving surface 15 is formed.
Since there is no sliding part between the rotary shaft 4 of the screw body 6 and the blade 26, it is possible to prevent the conveyed object from being caught even if it is a granular material.

FIG. 4 shows an embodiment of the granular material mixed liquid conveying path of the present invention. Explaining this, the granular material is rice for cooking rice, and it is shown that the granular material is mixed with a washing liquid, a treatment liquid, etc. and handled and conveyed as a granular material mixed liquid. Specifically, the rice washing means 102 and the dipping means 103 for washing and dipping the rice for cooking rice by using the alkaline side pH adjusting solution 101 to improve the quality of the rice for cooking rice, and the rice washing means 102 and the dipping means 103 Alkaline pH
A first control means 104 for controlling the adjusted solution 101 so as to keep it within a predetermined PH range, and a post-treatment for immersing the rice for rice cooking whose quality has been improved by washing and soaking in the acid side PH adjusting solution 105 to neutralize it. Means 106 and post-processing means 106
And a second control means 107 for controlling the acid side pH adjusting solution 105 to keep the acid side pH adjusting solution 105 in a predetermined PH range.
By washing and immersing rice for cooking rice using the H-adjusting solution 101, the quality of rice for rice cooking can be improved without any manual work, and the pH of the alkaline side is adjusted by these washing means 102 and dipping means 103. Since the solution is kept in the predetermined PH range by the first control means 104, even if the rice for cooking is Indica rice, for example, the cell wall of the rice is softened or decomposed to swell and soften the whole,
Improving the quality of rice cooked to the same level as or close to that of japonica rice before rice cooking can be reliably achieved without failure or variation.

Further, the rice for cooking whose quality has been improved by washing and soaking is soaked in the acid-side pH adjusting solution by the post-treatment means 106 to be neutralized. Alkaline pH adjusting solution 101 for improvement
The discolored state received by can be returned to the original white color, and further, the second control means 107 allows the post-processing means 106.
Since the acid side pH adjusting solution in (3) is kept within a predetermined PH range, it is possible to reliably return the rice for cooking rice to the original white color without any failure or variation.

These rice washing means 102, dipping means 103,
The post-processing means 106 is a conveyor having a carrying function for carrying rice for cooking to the next step, and washing, soaking, and neutralizing are performed in this carrying process. Each process of the sum can be automatically and continuously performed, and the processing capacity can be freely set and adjusted by the transportation distance and the transportation speed.

The rice washing means 102 comprises a rice washing tank 111 for storing the alkaline pH adjusting solution 101, and this rice washing tank 111.
And a rice washing pipe 112 having a large number of liquid absorption holes 112a opened in the rice washing tank 111. Further, a hopper 113 for receiving rice for cooking rice is provided at the upper end of the rice washing pipe 112, and a control valve (not shown) for adjusting the flow rate of the rice for cooking rice to be received by vertical movement by a screw is provided on the hopper 113.

A rice feed pump 115, which is a spiral pump, is connected to the lower end of the rice wash pipe 112, and a rice feed pipe 116 is connected to the discharge port of the rice feed pump 115.

The rice feeding pipe 116 extends to above the first water washing shooter device 117, and the discharge port 116a is opened downward.

The rice washing pipe 112 is provided with a rice supply tank 118 above the rice washing pipe 112, and the rice for cooking rice stored in the rice supply tank 118 is weighed by a weighing machine 121 and fixed in the hopper 113 of the rice washing pipe 112. The total amount can be set freely depending on the number of drops. The weighing device 121 receives a fixed amount of rice for cooking rice from the rice supply tank 118 and conveys the rice to the lower side when the plurality of weighing chambers 121a are rotated around the horizontal axis and are upward, Each time the weighing chamber 121a faces downward, the fixed amount of rice for cooking rice is dropped and the hopper 113
Drop into.

The rice-washing pipe 112 allows the received rice for cooking to flow downward while the flow rate is restricted by the control valve (not shown), and the rice-washing pump 112 feeds the rice from the rice-washing tank 111 through the liquid-sucking hole 112a.
While being placed in a disturbed state with the alkali-side pH adjusting solution 101 that is inhaled therein, it is sent out to the rice-sending pipe 116, and is conveyed while washing rice with the above-described quality improvement by the alkali-side PH adjusting solution 101. It is discharged to the first water washing shooter device 117.

Here, the rice washing pipe 112 and the rice sending pump 1
15 and the rice-sending pipe 116 form the rice-washing means 102 having a carrying function. Further, the rice supply tank 118, the weighing device 121, and the rice washing tank 111 are provided so as to be supported by a frame separately provided, and once the rice for rice cooked and discharged from the weighing device 121 is received by the conveyor, the rice is washed from this conveyor. Rice for cooking rice may be carried into the tank 11.

The alkaline pH adjusting solution 101 is sprayed from the upper nozzle 131 to the first washing chute device 117, and the lower part of the first washing chute device 117 has a mesh structure. By spraying the clean alkaline pH adjusting solution 101 from the alkaline solution source 133 onto the rice for sieving, the rice for rice after washing is finish-washed and the quality by the alkaline pH adjusting solution 101 is improved. The improved operation can be continued.

Therefore, the rice for cooking after the finishing washing is put into the dipping tank 124.

The immersion means 103 is the immersion tank 124.
And the alkaline solution source 133 through the float valve 132.
The clean alkaline side pH adjusting solution 101 from is supplied and is controlled so as to always maintain a constant liquid level. Further, the level sensor 1 determines whether or not the amount of rice for cooking in the immersion tank 124 has reached a predetermined amount so that the amount of rice for cooking rice fed from the first water washing shooter device 117 is always constant.
It is detected whether or not the rotary blades 134 of 34 interfere with the rice for cooking and stop, and when the rotary blades 134a are rotating, the measuring device 121 and the rice sending pump 115 are driven at high speed, and the rotation of the rotary blades 134a is stopped. Then, control is performed such that the weighing device 121 and the rice sending pump 115 are driven at a low speed.

From the bottom of the immersion tank 124, the rice-sending pipe 13 is passed through a three-way valve 135 for switching the rice-sending / drain removal.
6 extends, and a discharge port 136a is opened above the second water washing chute device 138 via the rice feeding pump 137 which is the screw pump shown in FIGS. Then, while the three-way valve 135 is switched to the rice sending side, the rice sending pump 137 provided in the middle of the rice sending pipe 136 is driven at an appropriate speed to move the rice for cooking into the dipping tank 124 to the alkaline side. While being brought into contact with the pH adjusting solution 101 for a predetermined time, the quality is sufficiently improved by the pH adjusting solution 101 on the alkaline side, and the rice is sent to the second water washing shooter device 138 and discharged on top of this.

The second water-washing shooter device 138 is sprayed with the alkali-side pH adjusting solution 101 from the upper nozzle 146, is discharged to the second water-washing shooter device 138, and is sent while being sieved. A clean alkaline pH adjusting solution 101 from the alkaline solution source 133 is sprayed onto the rice, and further finishing washing is performed, and the quality of the rice for cooking is improved by the alkaline pH adjusting solution 101 at a predetermined contact time. I am happy to complete it to the required extent.

Here, the immersion tank 124 and the three-way valve 13
5, the rice-sending pipe 136 and the rice-sending pump 137 form the dipping means 103 having a carrying function.

The alkali source 133 of this embodiment is shown in FIG.
As shown in, the water 162 in the purified water tank 161 and the predetermined alkaline liquid 164 in the alkaline liquid tank 163 are
By the combination of the pump 165 and the solenoid valve 166 and the combination of the pump 167 and the solenoid valve 168, respectively, by sending out at an appropriate flow rate ratio, it is possible to supply as the alkaline pH adjusting solution 1 adjusted to a predetermined concentration, that is, a predetermined PH. Is done.

The first and second water washing chute devices 117,
The drainage after using it for the final washing from 138 is received by the drain pans 171 and 172, respectively, and the return passage 173.
Through the washing tank 111 and the dipping tank 12
Alkaline-side pH adjusting solution 101 overflowing at 4
Is also supplied to the rice washing tank 111 through the return path 173, is finally used for rice washing in the rice washing means 102, and is then discharged from the overflow port 111a of the rice washing tank 111. Thus, in the rice washing tank 111, the first-use alkaline side pH adjusting solution 101 used for washing rice in the first and second water washing shooter devices 117 and 138 and dipping in the dipping tank 124 is used to perform initial rice washing. However, the alkaline side pH adjusting solution 10 after the primary use is
Since 1 always returns and is updated, the cleanliness level is maintained and there is no problem in performing initial rice washing. Secondary use for initial rice washing consumes the alkaline pH adjusting solution 101 by a large amount. Can be prevented.

Further, P of the alkaline side pH adjusting solution 101
For the H adjustment, PH in the finally used rice washing tank 111 is adjusted to PH.
It is detected by the sensor 174, and the opening degree of the solenoid valves 166, 168 and the pumps 165, 167 are detected according to the detection result.
The speed is controlled. However, the present invention is not limited to this, and it goes without saying that the PH may be detected and adjusted in any manner.

The post-treatment means 106 in this embodiment has a neutralization tank 153 for accommodating and neutralizing the acid side pH adjusting solution 105 from the acid solution source. In front of the neutralization tank 153, the rice with improved quality sent from the second washing chute 138 is received in the hopper 181, and the level sensor similar to the level sensor 134 of the received rice for rice is received. The hopper 181 is controlled by controlling the speed of the rice-sending pump 137 in accordance with the level detection result of 182.
Is continuously discharged from the container, and the carrier conveyor 183 can continuously supply the discharged product to the neutralization tank 153 at a predetermined flow rate.

However, the specific structure for such supply is not limited to this embodiment, and various designs can be made. Here, the rice sending pump 137 is constantly replenished and filled with the granular material mixture solution in which the alkaline pH adjusting solution 101 is mixed with the granular rice, by keeping the same liquid level as the immersion tank 124. As a result of these priming states, the screw body 4 is in a direct working state, so that as long as the immersion tank 124 is maintained at a predetermined liquid level, the rice-sending pump 137 can send rice through a vertically-oriented conveying path no matter how long it is started. The function can be achieved, and due to the characteristic transport function, even rice that has swelled and become soft due to water absorption after immersion can be sent without causing it to become fine rice. Needless to say, the rice-sending pump 137 can similarly perform the transport function even in the diagonal or lateral transport path.

The neutralization tank 153 has a horizontal bottom at the front stage and an inclined bottom at the rear stage, which is inclined forward and upward. The acid-side pH adjustment for storing the quality-improved rice for rice supply is adjusted. The neutralization process is performed by immersing the solution 105 in the solution 105. In the neutralization tank 153, a scraping blade 154a that moves while slidingly contacting the horizontal bottom and the inclined bottom.
A transport conveyor 154 having a
The rice for improved cooking which is supplied to 53 is scraped from the horizontal bottom side to the inclined bottom side, and on the inclined bottom, the rice for cooking rice is gradually scraped from the acid side pH adjusting solution 105 while draining. Then, the rice for cooking rice after draining is sent to the α-converting means 151 in the next step. Draining here is enough. However, if it is necessary to increase the degree of drainage, a drainer shooter device including the drainer shooter 1 can be adopted for draining here.

Here, the neutralization tank 153 and the transfer conveyor 15
4 constitutes a post-processing means 106 having a carrying function. However, the present invention is not limited to this, and various mechanisms can be adopted.

As the acid solution supply source, as in the alkaline solution supply source, the water in the water purification tank and the predetermined acid solution in the acid solution tank are respectively combined at appropriate flow rates by a combination of a pump and a solenoid valve. The acid-side pH adjusting solution 10 adjusted to have a predetermined concentration, that is, a predetermined pH, by being sent out.
To be able to supply as 5.

The acid side pH adjusting solution 105 used in the neutralization tank 153 is the overflow port 153a of the neutralization tank 153.
The acid side pH adjusting solution 105 in the neutralization tank 153 is constantly renewed by discharging from the neutralization tank 153, so that there is no problem that the neutralization ability is lowered due to dirt and the rice for cooking is contaminated. In the neutralization tank 153, the pH of the acid side pH adjusting solution 105 is detected by the PH sensor 161, and the opening degree of the solenoid valve and the pump speed are controlled according to the detection result. However, the present invention is not limited to this, and it goes without saying that the PH may be detected and adjusted in any manner. Further, the present invention is also applied to the case of performing ordinary rice cooking in which rice is washed with water, immersed in water and cooked.

[0053]

According to the screw pump of the present invention, the discharge port is laterally oriented, and the rotary shaft of the screw body is simply extended in the axial direction without passing through the discharge port so as to be exposed to the outside of the cylindrical casing and connected to the drive source. By doing so, both the introduction port and the discharge port can be set to the minimum opening by effectively using the entire opening for the passage cross-sectional area, and the object to be conveyed can be introduced and discharged without obstruction or reasonably, The screw body is provided with a spiral blade around the rotation axis, and by forming it with an outer diameter corresponding to any large inner diameter of the cylindrical casing that is larger in diameter than the inlet and the outlet, The object to be conveyed introduced into the cylindrical casing does not fall below the passage cross-sectional area of the conveyance path until it is introduced into the introduction port and after being discharged from the discharge port, and therefore the passage cross-sectional area becomes small. Without exerting extra pressure or resistance on the transported object, because it exerts a transporting force while reliably capturing the transported object by the spiral blade formed to any large outer diameter around the rotation axis, Even if the material to be transported is a granular liquid mixture in which granular materials such as rice are mixed, it can be reliably transported without force or biting. With these, a simple and inexpensive structure with no special shape or movement is used. It is possible to satisfy a sufficient carrying capacity without the problem that rice, etc. becomes fine rice.

A receiving surface is provided around the rotating shaft of the screw body for receiving the conveyed product conveyed by the spiral blade by the screw body at the discharge port position portion, and the conveyed product is located immediately before the receiving surface to discharge the conveyed product. With the configuration in which the blade for scraping to the side is provided on the rotating shaft of the screw body, at the same time that the object to be conveyed that the screw body conveys to the discharge port side is received at the discharge port position portion by the receiving surface, A blade provided on the rotating shaft of the screw body works on the stopped conveyed object and scrapes out the conveyed object toward the sideways discharge port, so that the conveyed object is conveyed in a compact curved path at a right angle from the cylindrical casing to the discharge port. Can be discharged smoothly, and the size can be reduced.

According to the granular material mixed liquid conveying path of the present invention, a part of the conveying path for conveying the granular material mixed solution is filled with the granular material mixed solution of the conveying path, and the area of the screw body is filled. So that at least part of the spiral blade faces
The screw pump in any one of the states described above is positioned, and the spiral blade of the screw body reliably operates on the granular material mixed liquid in the conveying path, so that conveying corresponding to the configuration of each screw pump can be achieved.

Even if the screw pump is provided at the upper part of the vertically-oriented transport path, the spiral blade of the screw body surely acts on the granular liquid mixture to transport it vertically and discharge it from the horizontally-oriented discharge port. Can be supplied to the next.

[Brief description of drawings]

FIG. 1 is a side view showing a whole structure of a screw pump of the present invention in a half section.

FIG. 2 is a side view showing a cross section of a half portion around a discharge port of the pump of FIG.

FIG. 3 is a side view of a half portion around the inlet of the pump of FIG. 1 as seen in section.

FIG. 4 is a side view showing an embodiment of a granular material conveying path using the pump of FIG.

[Explanation of symbols]

 1 Inlet 2 Discharge 3 Cylindrical casing 4 Rotating shaft 5 Spiral blade 6 Screw body 7 Drive source 15 Receiving surface 26 Blade 136 Rice sending pipe 137 Rice sending pump

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area F17D 3/12

Claims (5)

[Claims] 1. A screw casing having a spiral blade formed around a rotating shaft is built in a tubular casing having an inlet and an outlet at both ends and having a diameter larger than these, and the outlet is a tubular casing. A screw pump characterized by being formed sideways. 2. A receiving surface is provided around a rotation axis of the screw body for receiving a conveyed product conveyed by a spiral blade by a screw body at a position of a discharge port, and the conveyed product is located immediately before the receiving surface. The screw pump according to claim 1, wherein a blade for scraping to the discharge port side is provided on the rotating shaft of the screw body. 3. The screw pump according to claim 2, wherein the receiving surface is provided on the rotating shaft of the screw body. 4. A part of a conveying path for conveying the granular material mixed liquid is filled with the granular material mixed liquid of the conveying path so that at least a part of the spiral blade of the screw body faces the area. A granular material mixed liquid conveying path comprising the screw pump according to any one of claims 1 to 3. 5. The particulate matter mixture transport passage according to claim 4, wherein the screw pump is provided at an upper portion of the vertically oriented transport passage.