JP5022219B2 - Pump - Google Patents

Description

  The present invention relates to a pumping pump that can reduce the force required to pull up liquid by using buoyancy together. More specifically, the present invention relates to a pumping pump that has improved pumping efficiency when pumping mainly by human power. The present invention also relates to a pump that is configured to be portable by dividing or connecting the pump.

  A variety of pumping pumps for pumping water from wells, rivers, ponds, etc. have been proposed and put into practical use. Normally used pumps are roughly classified into an electric type using an electric motor as a power source and a manual type using human power. Since the electric pumps generally use a power source, there is a problem that they cannot be used when a power failure occurs during a disaster. In addition, manual pumps require considerable force during pumping, and are often difficult for children and elderly people to use, and they require priming water. However, there was a problem that the place of use was limited.

In view of this, the present applicant, in Japanese Patent No. 3457301 (Patent Document 1), is composed of a hollow outer tube having a suction port and a discharge port, and a reciprocating rod inserted reciprocally into the outer tube. A pumping pump having a structure with a gap for water passage between the inner surface of the outer tube and the outer surface of the reciprocating rod was proposed. This pumping pump is constructed so that the reciprocating rod is inserted inside the hollow outer tube, and buoyancy is generated in the reciprocating rod. By using this buoyancy, liquid is pumped with a slight force. It has the characteristics that can be. Moreover, since this pump is a simple structure, since the pump itself can be reduced in weight, it has the characteristic that it can carry easily.
Japanese Patent No. 3457301

  When the above-described pump is pumping up a liquid such as water to a height of about 3 m, it can be pumped with a slight force by the buoyancy generated in the reciprocating rod. However, when the liquid is pumped over that height, when the reciprocating rod is raised, it can be pumped with a slight force by buoyancy, but when the reciprocating rod is lowered, it must be pressed against buoyancy. For this reason, there is a problem in that the operation force is remarkably different depending on the operating direction of the reciprocating rod, and the pump operation is actually difficult to withstand use by human power. Further, as described above, if the cross-sectional area of the reciprocating rod is made smaller than the internal cross-sectional area of the outer tube, and a water passage gap is formed between the inner surface of the outer tube and the outer surface of the reciprocating rod. If so, the liquid can be pumped up. However, when the height of pumping up the liquid, that is, the pumping height is increased, the amount of pumping up the liquid gradually decreases, and there is a problem that the pump cannot be pumped up.

  In addition, since the pumping pump has different pumping heights depending on the place of use, pump lengths required by customers vary from one to another. Therefore, pumps of several tens of lengths must be manufactured and kept in stock. There was a problem. In addition, since the pump is lightweight, it may be carried to the place of use. However, when the pump is long, there is a problem that it is difficult to convey. Furthermore, as a user, when using at a plurality of use places having different pumping heights, there is a problem that a plurality of pumps having different lengths adapted to the pumping heights must be prepared.

  The present invention has been made in order to solve the above-described problems. First, a pumping pump capable of improving the pumping efficiency for pumping up the liquid and pumping up the liquid even when used manually. Is to provide. Secondly, the reciprocating operation of the reciprocating bar is facilitated while obtaining the buoyancy required for pumping. Thirdly, a manual pump that has a simple configuration and can be provided at low cost is provided at low cost. A fourth object is to provide a simple manual pump that can change the pumping height so that it can be carried and carried at low cost.

  In order to solve the above problems, a pump according to the invention of claim 1 includes a hollow outer tube having a suction port and a discharge port, a reciprocating bar inserted reciprocally into the outer tube, and It is composed of a suction valve provided in the vicinity of the suction port, and a discharge valve provided at the upper part of the piston having a suction hole provided at the lower end of the reciprocating rod, and the reciprocating rod is more than the internal cross-sectional area of the outer tube. The cross-sectional area of the outer tube is reduced to form a water passage gap between the inner surface of the outer tube and the outer surface of the reciprocating rod, and a liquid is interposed in the gap. The gist is that the ratio is 0.95D ≧ d ≧ 0.3D, where D is the inner diameter and d is the outer diameter of the reciprocating rod.

  The gist of the invention of claim 2 is that, in the invention of claim 1, the reciprocating range of the reciprocating bar is set to a range of 0.1 to 1.0 m with respect to the inside of the outer tube.

  Furthermore, the gist of the invention described in claim 3 is that, in the invention of claim 1 or 2, the period of the reciprocating rod for reciprocating the inside of the outer tube is 0.3 to 5 cycles / second.

  The gist of the invention of claim 4 is that, in the invention of claim 1, the specific gravity of the reciprocating bar in the liquid is set to 0.9 to 0.3.

  A pumping pump according to a fifth aspect of the present invention is the pump according to the first, second, third or fourth aspect of the present invention, and is inserted in a reciprocating manner inside the outer tube having a hollow structure having a suction port and a discharge port. A pump having a hollow structure and having a gap for water passage between the inner surface of the outer tube and the outer surface of the reciprocating rod, and the outer tube is disposed on the suction port side and the discharge port side. Each connecting portion is provided, and at least one extension outer tube is connected between the connecting portions, and the reciprocating bar has connecting portions provided on the suction port side and the discharge port side, respectively. At least one extended reciprocating rod is connected to the piston, the piston having a suction hole, and the lower end of the reciprocating rod provided with a discharge valve at the top thereof are arranged on the suction port side of the outer tube. The extension outer tube and the extension It is summarized in that for setting the length of the reciprocating rod.

  According to a sixth aspect of the present invention, the reciprocating rod having a hollow structure closes the upper end portion, closes the connecting portion with respect to the water passage gap, The gist is that buoyancy is applied to the reciprocating rod by a liquid.

  Furthermore, the invention described in claim 7 is provided with a plurality of outlets at arbitrary locations of the outer pipe and the extended outer pipe, and each of the outlets is provided with water stop means, and the reciprocating bar and the extended reciprocating pipe are provided. The gist is that when the liquid is pumped up by the reciprocating motion of the rod, one of the water stop means is opened to discharge the liquid.

  The pumping pump according to the present invention improves pumping efficiency by identifying the structure of the outer pipe and the inner pipe that is reciprocally inserted into the outer pipe as well as pumping liquid to a high place with a slight force. It is possible to pump up a high head at the time of a disaster or a place where a power source cannot be obtained.

  Further, by setting the relationship between the inner diameter D of the outer tube and the outer diameter d of the reciprocating rod at a ratio of 0.95D ≧ d ≧ 0.3D, the pumping efficiency for pumping the liquid to a high place with a slight force is increased. It becomes possible to do. Thereby, the liquid can be pumped up to a high place with a predetermined pumping amount, and can be used in a wide range of applications.

  Further, when the reciprocating rod is reciprocated within the range of 0.1 to 1.0 m with respect to the outer tube, it can be used by human power, and the liquid can be pumped up high by reciprocating within this range. .

  Furthermore, by setting the specific gravity of the reciprocating rod inserted into the outer tube to 0.9 to 0.3, the buoyancy of the reciprocating rod is adjusted appropriately even when the reciprocating rod is lowered. For this reason, the pressing force when lowering the reciprocating bar can be reduced, the pumping operation by human power becomes easy, and the pumping efficiency can be further increased.

  Further, according to the pump according to the present invention, not only the liquid is pumped up to a high place with a slight force, but also the outer tube and a reciprocating rod having a hollow structure that is reciprocally inserted into the outer tube are provided with connecting portions respectively. Therefore, it can be divided into short pieces and carried. Moreover, it becomes possible to connect with the pumping height according to the conditions of the place of use. Therefore, it can be quickly pumped up even in the event of a disaster or where no power source is available. Furthermore, it is not necessary to have many different lengths of inventory, and manufacturing costs and inventory management costs can be reduced. Furthermore, the user can change the length to an appropriate length depending on the place of use, and the pump can be used in many places.

  Further, the force required to pull up the reciprocating bar can be continuously reduced by the buoyancy generated by forming the reciprocating bar and the extended reciprocating bar connected thereto with a hollow structure. Thereby, it is possible to easily pump the liquid to a high place only by human power.

  Furthermore, by providing a plurality of discharge ports on the outer tube and the extended outer tube, the degree of freedom in the discharge height of the pumped liquid can be increased. At this time, it is possible to obtain the discharge of the liquid pumped from any discharge port by providing a water stop measure by a valve or the like at each discharge port.

  Further, since the structure can be simplified, the labor required for production can be reduced, and handling during transportation and use can be facilitated.

It is sectional drawing which shows the structure of the pumping pump by this invention. It is sectional drawing which shows the outer tube | pipe and reciprocating rod of the pumping pump shown in FIG. It is sectional drawing which shows the 1st adjustment means for adjusting the specific gravity of a reciprocating rod. It is sectional drawing which shows the 2nd adjustment means for adjusting the specific gravity of a reciprocating rod. It is a graph which shows the relationship of the pumping height with respect to the ratio of the outer tube | pipe and reciprocating bar of the pumping pump by this invention. It is a graph which shows the relationship between the reciprocating rod of the pumping pump by this invention, and underwater height. It is sectional drawing which shows the structure of the pumping pump which can be connected by this invention. It is explanatory drawing which shows the modification of the outer pipe | tube connection part and reciprocating rod connection part of the pumping pump shown in FIG. It is principal part sectional drawing which shows the 3rd Example of the pumping pump by this invention. It is sectional drawing which shows the conventional manual pumping pump.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pump 20 Outer pipe 21 Outer pipe connection part 22 Extension outer pipe 23 Suction port 24 Exhaust port 28 Suction valve 30 Reciprocating rod 31 Buoyancy adjustment body 32 Communication hole 33 Handle 34 Piston 36 Mounting tool 38 Exhaust valve 41 Reciprocating rod connection part 42 Extension Reciprocating rod D Inner diameter of outer tube d Outer diameter of reciprocating rod

  The pump is composed of a hollow outer tube having a suction port and a discharge port, and a hollow reciprocating rod that is reciprocally inserted into the outer tube, and between the inner surface of the outer tube and the outer surface of the reciprocating rod. It has a structure having a gap for water passage. A discharge port is provided in the outer pipe of the pump.

  The pumping pump is set to a ratio of 0.95D ≧ d ≧ 0.3D where D is the inner diameter of the outer tube and d is the outer diameter of the reciprocating rod. Furthermore, the reciprocating rod of the pump is set to have a small specific gravity in the range of 0.9 to 0.3, and is configured such that buoyancy is added to the reciprocating rod by the liquid that has entered the gap for water flow. .

  Further, the reciprocating rod reciprocates in the range of 0.1 to 1.0 m with respect to the outer tube, thereby pumping up the liquid. At this time, the reciprocating rod reciprocates at a cycle of 0.3 to 5 cycles / second in order to pump up efficiently.

  The pump is composed of a hollow outer tube having a suction port and a discharge port, and a hollow reciprocating rod that is reciprocally inserted into the outer tube, and between the inner surface of the outer tube and the outer surface of the reciprocating rod. It has a structure having a gap for water passage. The outer pipe of the pump is provided with connecting portions on the suction port side and the discharge port side, and at least one extended outer tube is connected between the connecting portions. The reciprocating bar is provided with connecting portions on the suction port side and the discharge port side, and at least one extended reciprocating rod is connected between the connecting portions. Furthermore, the length of the extended outer tube and the extended reciprocating rod is such that the lower end portion of the reciprocating rod provided with the piston having the suction hole and the discharge valve at the upper portion thereof is disposed on the suction port side of the outer tube. Is set.

  Further, in the pump, the upper end portion of the hollow structure reciprocating rod is closed, and the connecting portion is closed with respect to the gap for water flow. And it is comprised so that buoyancy may be added to the reciprocating rod of a hollow structure with the liquid which entered in the clearance gap for water flow.

  Furthermore, the pumping pump is provided with a plurality of discharge ports at arbitrary locations on the outer tube and the extended outer tube. Each of these outlets is provided with water stop means, and when the liquid is pumped up by the reciprocating operation of the reciprocating bar and the extended reciprocating bar, the liquid is discharged by opening only one water stop means.

  An embodiment of a pumping pump according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of a pumping pump. The pumping pump 10 has a double structure in which an outer tube 20 having a hollow structure and a reciprocating rod 30 having a size capable of reciprocating inside the outer tube are inserted. The outer tube 20 has a suction port 23, a discharge port 24, and an insertion port 26 for the reciprocating rod 30, and a suction valve 28 is provided in the suction port 23.

  The reciprocating rod 30 in the pumping pump 10 has a piston 34 attached to the tip via an attachment 36. The piston 34 is formed in a disk shape, and the piston diameter is set slightly smaller than the inner diameter of the outer tube 20 so as to ensure a clearance as a clearance in order to facilitate the operation when reciprocating inside the outer tube 20. Has been. Further, a suction hole 40 that is slightly smaller than the size of the discharge valve 38 is provided at the center of the piston 34. The attachment 36 supports the piston 34, and has a function for allowing the liquid that has passed through the suction hole 40 to pass through the discharge valve and to communicate with the gap between the outer tube 20 and the reciprocating rod 30. Have.

  Next, the suction valve 28 and the discharge valve 38 in the pumping pump 10 are configured to open and close as the reciprocating rod 30 moves up and down. In the process of pulling up the reciprocating rod 30 upward, the discharge valve 38 is closed by inertia, and the space formed between the piston 34 and the suction valve 28 is decompressed, whereby the suction valve 28 is opened, The liquid is sucked up from the suction port 23. Subsequently, in the process of pushing down the reciprocating rod 30, the liquid filled between the piston 34 and the suction valve 28 is compressed, so that the suction valve 28 is closed and the discharge valve 38 is opened, and the liquid is pumped up to the upper part of the piston 34. It is done. By repeatedly raising and lowering the reciprocating rod 30 in this manner, the liquid that has passed through the fixture 36 is pumped up into the gap between the outer tube 20 and the reciprocating rod 30 and the extended reciprocating rod, and is eventually discharged. Liquid is discharged from the mouth 24.

  When the handle 33 of the pumping pump 10 having the above-described configuration is reciprocated up and down to reciprocate the reciprocating rod 30, the weight of the liquid applied to the piston 34 and the discharge valve 38 is increased as the liquid is sucked up from the suction port 23. To increase. However, since the reciprocating rod 30 has a hollow structure, buoyancy is generated in the reciprocating rod 30 when immersed in the liquid. Therefore, this buoyancy reduces the lifting force of the handle 33 required for pumping. In this way, in order to generate buoyancy in the reciprocating rod 30, at least the upper end of the reciprocating rod 30 is closed in the normal use state. The reciprocating rod 30 may be sealed by closing both the upper and lower ends.

  When the reciprocating operation of the handle 33 of the pump is continued and the reciprocating rod 30 is reciprocated, the weight of the liquid gradually increases as the pumping height increases. However, since the volume immersed in the reciprocating rod 30 is also increased, the buoyancy is further increased. For this reason, even if there is a large difference in water head to the position to be pumped, the effect of reducing the force required for pumping is sustained, and it is possible to pump the liquid with a small human power.

  Such a pump is capable of pumping if the hydrostatic level of the liquid to be pumped is at least above the suction valve 28. For this reason, the pumping pump does not require priming water, and pumping can be performed only by immersing the suction valve 28 in the liquid. Therefore, when it is carried to the place of use, it can be used directly without any prior preparation, and the liquid pumping operation can be speeded up.

  In the pumping pump 10 having the above configuration, the ratio of 0.95D ≧ d ≧ 0.3D is set, where D is the inner diameter of the outer tube 20 and d is the outer diameter of the reciprocating rod 30. That is, as shown in FIG. 2, the outer diameter d of the reciprocating rod 30 is made to be 0.95 to 0.3 times the inner diameter D of the outer tube 20.

  When a predetermined amount of liquid is pumped up manually, the handle 33 of the pump is reciprocated up and down to reciprocate the reciprocating rod 30 a plurality of times. At this time, although there is variation depending on the person who performs the pumping, on average, either the lifting force or the pushing force of the handle 33 is limited to 10 kg. Moreover, as the said pumping pump 10, it is necessary to set the pumping height which can be used practically to 30 m or more. Therefore, in the human limit and the actual use state, the pumping height as the pumping pump 10 is 30 m or more, and the reciprocating rod 30 can be continuously reciprocated.

  Under the above conditions, as shown in FIG. 5, when the relationship between the inner diameter D of the outer tube 20 and the outer diameter d of the reciprocating rod 30 is 0.95D ≧ d ≧ 0.3D, it can be used practically. It has been found. That is, when the outer diameter d of the reciprocating rod 30 is not less than 0.95 times the inner diameter D of the outer tube 20, the volume of the gap between the outer tube 20 and the reciprocating rod 30 becomes small, and no liquid is pumped up. The pumping height does not reach 30m. Further, when the outer diameter d of the reciprocating rod 30 is less than 0.3 times the inner diameter D of the outer tube 20, the weight of the liquid in the gap increases and the liquid is not pumped up, and the pumping height does not reach 30 m. .

  In the above description, the outer diameter d of the reciprocating rod 30 and the inner diameter D of the outer tube 20 are exemplified. However, as shown in FIG. Of course, it may be substituted as B. Needless to say, the cross-sectional shapes of the reciprocating rod 30 and the outer tube 20 are not limited to a circle, but may be equivalent to a polygon such as a quadrangle.

  On the other hand, in the reciprocating rod 30 described above, when the reciprocating rod 30 has a hollow pipe structure and air is sealed in the inner diameter b shown in FIG. Since the buoyancy F received by the reciprocating rod 30 is proportional to the volume of liquid discharged by the outer cross-sectional area B of the reciprocating rod 30, the buoyancy F depends on the cross-sectional area ratio between the outer tube 30 and the reciprocating rod 30 and the specific gravity of the reciprocating rod 30. Different. In particular, even if the inner diameter of the outer tube 20 is equal, changing the cross-sectional area of the reciprocating rod 30 changes the limit of the suction height and the pumping efficiency. Incidentally, if the outer cross-sectional area B of the reciprocating rod 30 is small, the suction height is lowered and the buoyancy F is reduced, and the weight of the liquid in the outer tube 20 is increased, so that a large force is required to pull up the handle. Become less efficient. When the outer cross-sectional area B of the reciprocating rod 30 increases, the suction height increases and the buoyancy F increases, and the weight of the liquid in the outer tube 30 decreases, so that a large force is required to push down the handle. Become less efficient. For this reason, in actuality, it may be unbearable as an actual use state by human power.

  From the above, in order to give an appropriate buoyancy F to the reciprocating rod 30 in actual use, it was investigated that the specific gravity of the reciprocating rod 30 is 0.9 to 0.3. That is, when the specific gravity of the reciprocating rod 30 is 0.9 or more, the buoyancy F received by the reciprocating rod 30 becomes small, and a large force is required to pull up the handle, resulting in poor efficiency. Further, when the specific gravity of the reciprocating rod 30 is less than 0.3, the buoyancy F received by the reciprocating rod 30 is increased, and the force T required for pumping is reduced. Therefore, a large force T is required and the efficiency is deteriorated.

  As described above, the buoyancy F received by the reciprocating rod 30 is proportional to the volume of liquid discharged by the outer cross-sectional area B of the reciprocating rod 30. From this, the buoyancy F is proportional to the pumping height by the pumping pump 10, that is, the height of the water column existing in the gap between the outer tube 20 and the reciprocating rod 30, as shown by the two-dot chain line in FIG. Increase. Therefore, when the pumping height is about 10 m or more, the push-down force of the handle 33 exceeds the limit of 10 kg, and it is difficult to endure use with human power. From this, as shown by the solid line in FIG. 6, the specific gravity of the reciprocating rod 30 can be changed according to the height of the water column so that the change of the buoyancy F received by the reciprocating rod 30 is almost constant depending on the height of the water column. desirable. Incidentally, the specific gravity of the reciprocating rod 30 is set to be small when the water column height is small, and the specific gravity of the reciprocating rod 30 is set to be large when the water column height is large.

  FIG. 3 shows a first adjusting means for adjusting the specific gravity of the reciprocating rod 30. A buoyancy adjusting body 31 is interposed at an appropriate position in the reciprocating rod 30 and a communication hole 32 is formed on the piston 34 side of the reciprocating rod 30. As a result, the liquid enters the buoyancy adjusting body 31 inside the reciprocating rod 30, and the buoyancy during this period is greatly reduced. A through hole 35 is formed in the vicinity of the lower part of the buoyancy adjuster 31 so that the liquid enters the buoyancy adjuster 31 so as to communicate with the inside of the gap. Further, above the buoyancy adjusting body 31, buoyancy is generated by sealing the inside of the tube of the reciprocating rod 30. As described above, the buoyancy of the reciprocating bar 30 can be appropriately adjusted by appropriately setting the installation position of the buoyancy adjusting body 31.

  FIG. 4 shows second adjusting means for adjusting the specific gravity of the reciprocating rod 30. That is, the reciprocating rod 30 itself is formed of a solid rod having a specific gravity of 0.9 or less. As described above, the buoyancy can be appropriately adjusted by changing the material of the reciprocating rod 30 having an appropriate specific gravity.

  As this buoyancy adjusting means, it is also possible to adjust the buoyancy of the reciprocating rod 30 by inserting a rod having an appropriate length having a specific gravity of 0.9 or less into the tube of the hollow reciprocating rod 30. is there. It is also possible to adjust the buoyancy appropriately by changing the hollow reciprocating rod 30 itself to a material having a large specific gravity such as a metal material. Further, the buoyancy may be adjusted by filling the hollow reciprocating rod 30 with a filler having a large specific gravity.

  The pumping efficiency of the pumping pump 10 configured as described above is also affected by the reciprocating range of the reciprocating rod 30 and the cycle of reciprocating the reciprocating rod 30. That is, the range in which the reciprocating rod 30 is reciprocated is limited as an actual use state with actual human power. At this time, the reciprocating range of the reciprocating rod 30 relative to the inside of the outer tube 20 is preferably 0.1 to 1.0 m. When the reciprocating range is less than 0.1 m, the amount of liquid due to suction is reduced and efficiency is deteriorated. Moreover, when the reciprocating movement range is 1.0 m or more, the moving range is too large and deviates from the actual use state by human power.

  On the other hand, the cycle of the reciprocating rod 30 that reciprocates inside the outer tube 20 is set to 0.3 to 5 cycles / second. When the cycle of the reciprocating bar 30 is 0.3 cycle / second or less, the liquid sucked into the gap is small, so it is pressed by the atmospheric pressure, and it is difficult to suck it further. I can't. Further, when the cycle of the reciprocating rod 30 is 5 cycles / second or more, the moving speed of the reciprocating rod 30 is high, and cavitation occurs in the liquid on the piston 34 side, so that the pumping efficiency is deteriorated. Therefore, in order to obtain a predetermined pumping efficiency, it is preferable to set the cycle of the reciprocating rod 30 to 0.3 to 5 cycles / second.

  The pumping pump according to the present invention is not limited to the above embodiment, and can be appropriately changed without departing from the present invention. For example, the discharge valve provided on the piston may be changed to a ball made of a material such as glass or metal in addition to the tongue-shaped valve. Of course, the length and outer diameter of the outer pipe, the extended outer pipe, the reciprocating bar, and the extended reciprocating bar of the pump are variously changed. In addition, the structure is designed to obtain efficiency and pumping height that can be pumped by human power, but in cases where this range is exceeded, levers, gears, pulleys, etc. are combined with the steering wheel, and further assistance is provided. Dynamic power may be used.

  An embodiment of a pumping pump according to the present invention will be described in detail with reference to the drawings. FIG. 7 is a sectional view showing the structure of a pumping pump that can be connected. The pumping pump 10 has a double structure in which an outer tube 20 having a hollow structure and a reciprocating rod 30 having a size capable of reciprocating inside the outer tube are inserted. The outer tube 20 has a suction port 23, a discharge port 24, and a reciprocating rod insertion port 26, and a suction valve 28 is provided in the suction port 23.

  In such a pumping pump 10, the outer pipe 20 is provided with connecting portions 21 on the suction port 23 side and the discharge port 24 side, and at least one extended outer tube 22 is connected between the connecting portions 21. Yes. The reciprocating bar 30 is provided with connecting portions 41 on the suction port 23 side and the discharge port 24 side, and at least one extended reciprocating rod 42 is connected between the connecting portions 41.

  A handle 33 for reciprocating the reciprocating rod 30 is provided on the upper end side of the reciprocating rod 30 located on the discharge port 24 side of the outer tube 20, and the lower end side located on the suction port 23 side of the outer tube 20. In this case, a piston 34 having an outer diameter slightly smaller than the inner diameter of the outer tube 20 is disposed via an attachment 36. Further, the piston 34 is provided with a discharge valve 38.

  The outer tube 20, the reciprocating rod 30 and the extended outer tube 22, and the extended reciprocating rod 42 described above are lightweight and can be freely selected in length, and can be easily processed, such as a PVC tube or a metal tube such as aluminum. Can be used. In addition, when the pumping height is increased by connecting the extended outer tube 22 and the extended reciprocating bar 42 or when the pump is used at a high temperature, in order to prevent the device from being damaged due to deformation, When pumping various liquids, it is desirable to use metal tubes such as aluminum.

  On the other hand, the connecting portion 21 that connects the outer tube 20 and the extended outer tube 22 is connected by forming a screw thread at each end and screwing. Further, the connecting portion 41 that connects the reciprocating rod 30 and the extended reciprocating rod 42 is also connected by forming a screw thread at each end and screwing. At this time, if the lengths of the extended outer tube 22 and the extended reciprocating rod 42 are made the same, the outer tube 20, the handle 33, and the piston 34 can be kept in a predetermined positional relationship.

  As this connecting means, as shown in FIG. 8A, a pipe 50 serving as a socket is attached to the outside of the connecting portion 21 that connects the outer pipe 20 and the extended outer pipe 22, and one side is fixed to the outer pipe 20. Alternatively, the extended outer tube 22 may be inserted from the other end and tightened with the screw 51 to be connected. Further, as shown in FIG. 8B, both ends of the pipe 50 serving as a socket may be fixed by rubber rings 52. Further, as shown in FIG. 8C, the connecting portion 41 that connects the reciprocating rod 30 and the extended reciprocating rod 42 is joined by a pin 54 via a plug 53 provided to close the reciprocating rod 30. Anyway. A hollow ring may be used instead of the stopper 53. Thus, according to the connection method shown in FIG. 8, the manufacturing process of providing a screw thread can be omitted, and processing can be facilitated.

  The outer tube 20, the reciprocating rod 30, the extended outer tube 22, and the extended reciprocating rod 42 are set to individual lengths of, for example, about 0.5 m to 5 m in consideration of carrying the pump. A pumping pump having a length of up to about 40 m can be configured by connecting a plurality of extended outer tubes 22 and extended reciprocating rods 42 in accordance with use conditions. The length of this pumping pump means the height at which pumping is possible, and according to the pumping experiment, it has been confirmed that the pumping up to about 40 m in vertical height. In addition, when the said pumping-up pump inclines at a predetermined angle, the full length of a pump becomes still longer.

  Next, the reciprocating rod 30 in the pumping pump will be described in detail. A piston 34 is attached to the tip of the reciprocating rod 30 via an attachment 36. The piston 34 is formed in a disk shape, and the piston diameter is set slightly smaller than the inner diameter of the outer tube 20 so as to ensure a clearance as a clearance in order to facilitate the operation when reciprocating inside the outer tube 20. Has been. Further, a suction hole 40 that is slightly smaller than the size of the discharge valve 38 is provided at the center of the piston 34. The attachment 36 supports the piston 34, and has a function for allowing the liquid that has passed through the suction hole 40 to pass through the discharge valve and to communicate with the gap between the outer tube 20 and the reciprocating rod 30. Yes.

  Furthermore, the suction valve 28 and the discharge valve 38 in the pumping pump will be described in detail. The suction valve 28 and the discharge valve 38 are configured to open and close by the up and down movement of the reciprocating rod 30. In the process of pulling up the reciprocating rod 30 upward, the discharge valve 38 is closed by inertia, and the space formed between the piston 34 and the suction valve 28 is decompressed, whereby the suction valve 28 is opened, The liquid is sucked up from the suction port 23. Subsequently, in the process of pushing down the reciprocating rod 30, the liquid filled between the piston 34 and the suction valve 28 is compressed, so that the suction valve 28 is closed and the discharge valve 38 is opened, and the liquid is pumped up to the upper part of the piston 34. It is done. By repeatedly moving the reciprocating rod 30 up and down in this way, the liquid that has passed through the fixture 36 is transferred to the gap between the outer tube 20 and the extended outer tube 22 and the reciprocating rod 30 and the extended reciprocating rod 42. The liquid is pumped up, and then the liquid is discharged from the discharge port 24.

  When the handle 33 of the pumping pump having the above-described configuration is reciprocated up and down and the reciprocating rod 30 is reciprocated, the weight of the liquid applied to the piston 34 and the discharge valve 38 increases as the liquid is sucked up from the suction port 23. To do. However, since the reciprocating rod 30 and the extended reciprocating rod 42 are formed in a hollow structure, buoyancy is generated in the reciprocating rod 30 and the extended reciprocating rod 42 when immersed in the liquid. Therefore, this buoyancy reduces the lifting force of the handle 33 required for pumping. Thus, in order to generate buoyancy in the reciprocating rod 30 and the extended reciprocating rod 42, at least the upper end of the reciprocating rod 30 or the upper end of the extended reciprocating rod 42 is closed in a normal use state. It should be noted that both the upper end and the lower end of the reciprocating rod 30 and the extended reciprocating rod 42 may be closed to form a sealed state.

  When the reciprocating operation of the handle 33 of the pump is continued and the reciprocating rod 30 is reciprocated, the weight of the liquid gradually increases as the pumping height increases. However, since the volume immersed in the reciprocating rod 30 and the extended reciprocating rod 42 is also increased, the buoyancy is further increased. For this reason, even if there is a large difference in water head to the position to be pumped, the effect of reducing the force required for pumping is sustained, and it is possible to pump the liquid with a small human power.

  Such a pump is capable of pumping if the hydrostatic level of the liquid to be pumped is at least above the suction valve 28. For this reason, the pumping pump does not require priming water, and pumping can be performed only by immersing the suction valve 28 in the liquid. Therefore, when it is carried to the place of use, it can be used directly without any prior preparation, and the liquid pumping operation can be speeded up.

  FIG. 9 shows an example in which a plurality of discharge ports of the pump are arranged. That is, in the pumping pump, if the discharge port 24 is provided at a position lower than the height of the insertion port 26 of the reciprocating rod 30, the pumped liquid can be discharged from the discharge port 24. Therefore, as shown in FIG. 9, a plurality of valves as discharge ports can be provided at different heights.

  In the pumping pump shown in FIG. 9, three valves each including a first valve 60, a second valve 61, and a third valve 63 are arranged at different heights. Among these, the first valve 60 on the upper end side is disposed in the outer tube 20, and the second valve 61 and the third valve 63 are disposed in the extended outer tubes 64 and 65, respectively. Has been. These extended outer tubes 64 and 65 are connected to the outer tube 20 and the extended outer tubes 64 and 65 by connecting portions 66 and 67, as in the second embodiment.

  Further, the first valve 60, the second valve 61, and the third valve 63 are each provided with a water stop means. The water stop means is preferably a faucet, for example. When liquid is pumped by the pump, one of the valves is opened and the other valve is stopped. After setting in this state, when the handle 33 is reciprocated up and down and the reciprocating rod 30 is reciprocated, the liquid is sucked up from the suction port 23, and the liquid can be discharged from the opened valve. In this way, by selecting and opening any one of the first valve 60, the second valve 61, and the third valve 63, water can be pumped to an arbitrary height even when the pump is fixed. For example, it can be used for each building hierarchy. Note that the three valves may be arranged in one outer tube or an extended outer tube.

  In addition, the pumping pump concerning this invention is not limited to the said Example, It can change suitably in the range which does not deviate from this invention. For example, the discharge valve provided on the piston may be changed to a ball made of a material such as glass or metal in addition to the tongue-shaped valve. Of course, the length and outer diameter of the outer pipe, the extended outer pipe, the reciprocating bar, and the extended reciprocating bar of the pump are variously changed.

  The present invention is applied to a pump for pumping water such as wells, rivers, and ponds, or liquids such as oil and chemicals.

Claims (3)

A hollow outer tube having a suction port and a discharge port, and a reciprocating rod inserted reciprocally into the outer tube;
A suction valve provided in the vicinity of the suction port;
A discharge valve provided at the top of the piston having a suction hole provided at the lower end of the reciprocating rod;
The cross-sectional area of the reciprocating rod is made smaller than the internal cross-sectional area of the outer tube to form a gap for water passage between the inner surface of the outer tube and the outer surface of the reciprocating rod, and liquid is interposed in the gap. A pump having a structure that allows
When the inner diameter of the outer tube is D and the outer diameter of the reciprocating rod is d.
0.95D ≧ d ≧ 0.3D
As well as a pump
Consists of a hollow outer tube having a suction port and a discharge port, and a hollow structure reciprocating rod inserted into the outer tube so as to reciprocate, and for water passage between the inner surface of the outer tube and the outer surface of the reciprocating rod. A pump having a gap of
The outer pipe is provided with a connecting portion on each of the suction port side and the discharge port side, and at least one extended outer tube is connected between the connecting portions,
The reciprocating bar is provided with connecting portions on the suction port side and the discharge port side, respectively, and at least one extended reciprocating rod is connected between the connecting portions,
The extension outer tube and the extension reciprocating rod are arranged such that a piston having a suction hole and a lower end portion of the reciprocating rod provided with a discharge valve at an upper portion thereof are arranged on the suction port side of the outer tube. 汲 look up pump it said that you set a length. The reciprocating rod having a hollow structure closes the upper end portion, closes the connecting portion with respect to the water passage gap, and adds buoyancy to the reciprocating rod by the liquid in the water passage gap. The pump according to claim 1 . A plurality of outlets are provided at arbitrary locations on the outer tube and the extended outer tube, and each of the outlets is provided with water stop means, and when pumping up liquid by the reciprocating operation of the reciprocating rod and the extended reciprocating rod, The pumping pump according to claim 1 or 2 , wherein one pumping means is opened to discharge liquid.

Images