JP2547502Y2 - Pumping equipment - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention can surely remove a conveyed material such as mortar, concrete or powdery material having a powdery form, for example, with relatively low fluidity. The present invention relates to a pressure feeding device capable of pressure feeding.

(Prior Art) Conventionally, as this type of pumping device, for example,
-54978 discloses a concrete delivery machine and the like. This is a piston that slides inside the cylinder,
Filling concrete into the housing space in the cylinder from the receiving port and sending out the filled concrete to the delivery port alternately, and rotating the tubular body to receive the receiving port and the delivery port alternately. It is designed to be able to communicate with the space.

There is also a squeeze pump for slurry as described in Japanese Utility Model Publication No. 50-42961. This is because a large number of rows of sliders are sequentially pushed by a cam in a cylinder so that at least one of them is always in a fully pushed position by a cam in a cylinder so as to be radially guided toward an outer periphery of a rubber hose penetrating the inside of the sealed casing. The inner cam to be installed is divided into a number of cam rings having a linear surface parallel to each axial direction, and the inner cams are connected integrally in a state where the phases are shifted appropriately by through bolts. At the same time, the inner cam is pivotally supported by lids that are detachably provided on both ends of the casing, and a stator externally fitted to a rubber hose, a group of sliders guided by the stator, and With the fitted inner cam and the like integrally assembled on the lid, each cam ring is rotated by pulling out and removing bolts outside the casing so that the phases can be matched. Than it is.

Further, there are a pressure feeding device as described in JP-A-62-178786 and a micro-pump as described in JP-A-56-129590.

(Problems to be Solved by the Invention) However, in the concrete delivery machine and the like as described above, it is difficult to provide power for driving the piston and power for rotating the cylinder separately. ,
Since concrete is delivered by a piston, there is a problem in that a power having a considerably large output must be used as power for driving the piston.

Also, in the slurry squeeze pump as described above, the rubber hose, the slider group, and the cam in the cylinder are all housed in the closed casing, so that the structure of the squeeze pump itself becomes complicated and maintenance is required. There was a troublesome point. Moreover, when trying to increase the amount of material to be pumped per unit time by using a relatively thick rubber hose, it is difficult to replace it with a thick rubber hose. In addition, there is a problem that the size of the rubber hose must be considerably large, and a state in which the rubber hose is pressed by the group of sliders cannot be finely adjusted according to the material to be conveyed. And
Even when the squeeze pump is not in use, the rubber hose is
Either part of it is pinched by the slider group and remains in an elastically deformed state.Damage to the rubber hose or deterioration of the elastic force in this part is difficult, and the rubber hose is frequently replaced. And the replacement of the rubber hose itself is very troublesome. By the way, since the slider group is arranged at a position where the circumference is radially divided into three and clamps the rubber hose, the amount of elastic deformation of the rubber hose in the clamped state increases, and the rubber hose itself is easily damaged, Deterioration of elasticity etc. also accelerates,
In addition, since the rubber hose is relatively thick because of its durability and the like, there is a problem that it is difficult to reliably close the inside of the rubber hose.

In particular, in the conventional pumping device as described above, the elastic cylinder that is compressed and elastically deformed is restored by its own elastic force, but if the elastic cylinder is damaged or degraded by some use, The elastic restoring force is extremely reduced, so that there is a problem that the object to be conveyed hardly enters the elastic cylinder, the amount of the object to be conveyed per unit time is reduced, and the efficiency of the pumping is deteriorated. That is, it is necessary to quickly restore the elastic cylinder that is elastically deformed by being pressed. In addition, in order to improve the efficiency of pumping the object to be pressed, it is necessary to surely and strongly perform the moving operation of the pressing body that presses the elastic cylinder, and to move the pressing body quickly. was there.

In addition, since the pressing portion of the compression body in the elastic cylinder is constant, the elastic cylinder is damaged or deteriorated quickly, and there is a disadvantage that the interchangeable mounting of the elastic cylinder must be performed relatively frequently. Was.

(Means for Solving the Problems) In view of the above, the present invention has been devised in order to solve the above-described difficulties and the like, and to provide a pressure-feeding device which is robust, strong, and can be expected to operate more reliably and smoothly. Specifically, a cylindrical elastic cylindrical body 30 having appropriate elasticity is formed in a substantially vertical shape on the base frame A in a state where the receiving port 31 at the upper end and the outlet 32 at the lower end are held. And a pair of compression bodies 15 slidable in a predetermined direction so as to be able to clamp the elastic cylinder 30 on the base frame A at appropriate intervals along the cylinder center direction of the elastic cylinder 30. A plurality of cam shafts 5 having a plurality of cams 10 fixed thereto are rotatably supported by cam bearing members 6 mounted on upper and lower end portions thereof, and the cam bearing members 6 are fixed to predetermined positions. Attached to the base frame A so as to be able to advance and retreat in the direction, the pair of cam shafts 5 can be rotated using the drive motor 1 as power. In addition, the rotational force of the cam shaft 5 is transmitted to each of the compression members 15 via the respective cams 10, and each of the pair of compression members 15 sequentially presses the elastic cylinder 30, and Of the elastic cylinder 30 from the inlet 31 to the outlet 32, and the direction in which the cam bearing 6 advances and retreats and the direction in which the pair of pressing members 15 slides. The compression state of the elastic cylinder 30 by each of the pair of compression bodies 15 can be adjusted by adjusting the distance between the cam shaft 5 and the compression body 15 by the forward and backward movement of the cam bearing body 6. And compression body
A pair of retraction springs 18 are interposed between the left and right sides and the base frame A, respectively, so that the rebound resilience of the retraction springs 18 is urged in a direction to bring the compression bodies 15 closer to the camshaft 5. Then, a retraction frame 20 provided with a retraction roller 21 is fixed to the compression body 15, and the compression body 15 is formed so that the cam shaft 5 can be pulled back by the cam 10 contacting the retraction roller 21. I do. Then, the center is formed so as to be freely bendable, and both end portions thereof are rotatably supported by the compression body 15, and a roller 26 is rotatably supported by the center portion thereof. A pair of restoration links 25 are arranged so as to straddle the pair of compression bodies 15 and sandwich the elastic cylindrical body 30, and the rollers 26 of the pair of restoration links 25 are traversed by the compression bodies 15. Means is employed in which the elastic cylinder 30 pressed in a substantially flat surface is pressed from the longitudinal direction in the flat state and restored to a substantially circular cross section.

In addition, means for configuring the elastic cylinder 30 so as to be movable in the vertical direction with respect to the base frame A is employed.

Further, a means is employed for rotating the elastic cylinder 30 within a predetermined range with respect to the base frame A.

(Operation) The elastic cylindrical body 30 has the receiving port 31 at the upper end and the outlet 32 at the lower end thereof held substantially vertically by the base frame A. The pair of compression members 15 are attached to the base frame A, and are pressed and slid by the cam 10 of the camshaft 5 which is connected to the drive motor 1 and rotates, thereby clamping the elastic cylinder 30 from the left and right. A plurality of sets of compression bodies 15 arranged at appropriate intervals along the cylinder center direction of the elastic cylinder 30
As a result, it is sequentially pressure-fed in the elastic cylinder 30 toward the delivery port 32. At this time, the elastic cylinder 30 is sequentially pressed toward the outlet 32 while being elastically deformed substantially symmetrically with respect to the cylinder core. Then, when the cam bearing body 6 is moved, the cam shaft 5 separates or approaches the elastic cylindrical body 30, and
The sliding range of each of the compression bodies 15 due to 10 changes, and the elastic cylinder 30
Is changed, so that the pressure-feeding state of the object to be pressed can be changed. Moreover, when the camshafts 5 are largely moved away from the elastic cylinder 30, all the compression bodies 15 are separated from the elastic cylinder 30, and the compressed state of the elastic cylinder 30 is released.

Further, the retraction spring 18 is interposed between the compression body 15 and the base frame A, and the rebound resilience is urged in a direction to make each compression body 15 approach the cam shaft 5 and is pressed by the cam 10. It becomes a force to pull back the compressed body 15 quickly.

Further, the retraction frame 20 provided with the retraction roller 21 is fixed to the compression body 15, and the retraction roller 21 contacts the cam 10 and is pressed. It is the force to pull back alligator surely and strongly.

The restoration link 25 has a center that is freely bendable, a roller 26 that is rotatably supported by a roller, and both end portions that are rotatably supported by a pair of compression bodies 15 to form a pair of compression members. A pair of restoration links 25 are provided so as to straddle the body 15.
Are disposed so as to sandwich the elastic cylinder 30. Moreover, the roller 26 of the pair of restoration links 25 is a pair of compression bodies.
By the sliding of 15, the elastic cylinder 30 pressed in a substantially flat cross section is pressed (clamped) from a direction orthogonal to the sliding direction of the compression body 15, and the elastic cylinder 30 has its own elasticity. Combined with the restoring force, it quickly restores to a substantially circular cross section.

Further, when the elastic cylinder 30 is moved in the vertical direction with respect to the base frame A, a portion which is pressed by the compression body 15 and becomes fatigued is changed, and intensive damage of the elastic cylinder 30 is prevented.

Further, when the elastic cylinder 30 is rotated within a predetermined range with respect to the base frame A, a portion that is pressed by the compression body 15 and becomes fatigued is changed, and intensive damage of the elastic cylinder 30 is prevented. .

(Embodiment) Hereinafter, the present invention will be described with reference to illustrated examples.

In the figure, S denotes a material to be conveyed appropriately such as, for example, mortar, concrete, or a powdery material having a powdery form (including cement, flour, other edible powdery material, etc.) having relatively poor fluidity. In the pumping device of the present invention, which is capable of pressure-feeding, the pumping device S is provided with a cylindrical elastic cylindrical body 30 having elasticity as appropriate, a receiving port 31 at an upper end thereof and an outlet at a lower end thereof.
32 are held substantially vertically on the base frame A while the pair of camshafts 5 are rotated by the driving motor 1, and the rotational force of the camshafts 5 is transmitted via the respective cams 10. The plurality of compression bodies 15 are transmitted to each of the compression bodies 15, and each of the pair of compression bodies 15 sequentially presses the elastic cylinder 30, and the material to be conveyed such as concrete in the elastic cylinder 30 is received from the inlet 31 of the elastic cylinder 30. It is configured so that it can be sequentially pumped toward the delivery port 32.
A drive transmission mechanism S1 that transmits the rotational force of the camshaft 5 to the camshaft 5, a camshaft moving mechanism S2 that allows the camshaft 5 to freely advance and retreat in a predetermined direction via a cam bearing body 6, and is pressed by the cam 10 of the camshaft 5. And a compression mechanism S3 comprising a plurality of sets of compression bodies 15
And a restoring mechanism S4 for restoring the elastic cylindrical body 30 which has been pressed in a substantially flat shape.

The base frame A is formed into an appropriate shape by using a mold material, a plate material, and other appropriate materials. In the drawing, A1 is a cover that is mounted on the base frame A to seal the inside of the base frame A or cover a part thereof.

The drive transmission mechanism S1 is disposed on the base frame A, the drive motor 1 mounted on the base frame A, two drive sprockets 2 fixed to the drive shaft of the drive motor 1 that is appropriately decelerated and rotated. It comprises a pair of driven sprockets 4 fixed to the lower ends of a pair of cam shafts 5, two driving sprockets 2 and a chain 3 wound around the pair of driven sprockets 4, respectively. That is, each of the pair of cam shafts 5 is formed so as to be surely rotated by one drive motor 1.

The camshaft moving mechanism S2 is mounted on upper and lower end portions of the pair of camshafts 5, rotatably supports the camshafts 5, and is mounted on the base frame A so as to be able to advance and retreat in a predetermined direction. 6 and a screw rod 7 which is screwed to the base frame A and whose tip is rotatably locked to the cam bearing body 6. Are configured to move forward and backward toward the elastic cylinder 30. That is, the distance between the cam 10 and the compression body 15 can be finely adjusted. The cam bearing member 6 has a guide groove 6a formed on both sides thereof, and guide pieces 8 corresponding to the guide groove 6a are fixed to the base frame A, respectively. It is formed to slide smoothly only in the direction. In the figure, reference numeral 9 denotes a bearing housed in the cam bearing body 6, and the cam shaft 5 is smoothly rotated by the bearing 9.

In the clamping mechanism S3, the rotational force of the camshaft 5 is transmitted to each of the compression members 15 via each of the cams 10, and each of the pair of compression members 15 can sequentially clamp the elastic cylinder 30. , Compression body
The guide shaft 15 has guide holes 15a formed at both ends thereof, and is fixed to the base frame A through the guide holes 15a.
The center edge of the base roller is centered on the center roller to reduce friction with the cam 10.
16 is rotatably supported. Note that the distal end portion of the compression body 15 that is in direct contact with the elastic cylinder 30 is formed of an appropriately smooth arc surface so as not to damage the elastic cylinder 30 when it is pressed.

The restoring mechanism S4 straddles the retraction spring 18 interposed between the compression body 15 right and left and the base frame A, the retraction frame 20 fixed to the compression body 15, and the pair of compression bodies 15, respectively. And a return link 25 arranged in such a way that
The pull-back elasticity is urged in a well-balanced manner so that each compression body 15 approaches the camshaft 5, and the pull-back frame
Reference numeral 20 denotes a retracting roller 21 rotatably supported at its base end central portion to reduce friction with the cam 10, and the cam 10 comes into contact with the retracting roller 21 so that the pressing body 15 Is formed so that the cam shaft 5 can be forcibly pulled back, and the restoration link 25 is formed so that the center thereof can be bent freely, and both end portions thereof can be freely rotated by the compression body 15. A roller 26 is rotatably supported at a central portion of the elastic cylinder 30. The roller 26 is configured to flatten an elastic cylindrical body 30 which is pressed in a substantially flat cross section by the pressing body 15. Pressure is applied from the longitudinal direction (the direction orthogonal to the sliding direction of the compression body 15) in the state, and the cross section can be restored to a substantially circular cross section.

The elastic cylinder 30 is suitably made of a rubber material (or a synthetic resin material as appropriate).
For example, it is formed in a thick cylindrical shape having relatively large elasticity, and in some cases, a reinforcing core material may be appropriately embedded therein. That is, a metal wire (or a synthetic resin wire) as appropriate may be buried and provided as reinforcement.

Further, the elastic cylinder 30 is configured to be movable in the vertical direction with respect to the base frame A, or to be rotatable within a predetermined range with respect to the base frame A (not shown). That is,
The portion that is fatigued by being pressed by the compression body 15 is changed periodically to prevent intensive damage to the elastic cylinder 30 and to enable long-term use.

In the figure, reference numeral 40 denotes a stirrer disposed above the base frame A and communicated with the receiving port 31 of the elastic cylinder 30. The stirrer 40 includes a stirrer case 41 and a stirrer case 41. A stirring case includes a rotatable rotor 42 and a drive motor 43 for rotating the rotor 42.
The object to be fed, which is put into the inside 41, is sufficiently stirred by the rotating rotor 42 before being sent to the receiving port 31 of the elastic cylinder 30. Note that a hopper can be used instead of the stirring device 40.

Further, as shown in FIG. 10, the stirring device 40 and the elastic cylinder 30
Plate with a communication hole 36 between it and the receiving port 31
35 may be interposed. At this time, the communication hole 36 of the plate 35
Is set so as to be smaller than the inner diameter of the receiving port 31 portion of the elastic cylindrical body 30, so that the material to be pressed in the stirring case 41 of the stirring device 40 can be smoothly fed into the elastic cylindrical body 30, and the The sending amount can be adjusted. Moreover, the plate 35 is slidably mounted on a plate holding portion 37 formed between the agitating device 40 and the elastic cylindrical body 30, and the elasticity of the object to be conveyed in the agitating case 41 by the sliding operation of the plate 35. The amount of feeding into the cylinder 30 may be arbitrarily adjustable.

In the figure, reference numeral 50 denotes a delivery device which is disposed below the base frame A and communicates with the delivery port 32 of the elastic cylinder 30. A delivery device 50 shown in FIGS. 1 and 2 includes a delivery case 51 provided with an air inlet 52 and a discharge port 53, a rotor rotating in the delivery case 51, and a rotor for rotating the rotor. A drive motor 54 is provided, and to the object to be pressed, which has been pressure-fed from the delivery port 32 of the elastic tubular body 30, from the air delivery port 52, for example, constantly applies an appropriate high pressure, such as compressed air, constantly.
Thus, the object to be pressure-transferred is transferred in the transfer hose connected to the discharge port 53. The delivery device 50 shown in FIG. 11 is composed of only a delivery case 51 provided with an air supply port 52 and a discharge port 53 in order to simplify the configuration. From the air inlet 52, for example, an appropriate high pressure, such as compressed air, is constantly applied to the pressure-conveyed material that has been discharged, so that the pressure-conveyed material is transferred through a transfer hose connected to the discharge port 53. It was done.

Further, as shown in FIGS. 7 to 9, the pressure feeding devices S are arranged in parallel, these clamping mechanisms S3 are driven by one drive transmission mechanism S1, and the discharge ports of the respective feeding devices 50 are arranged. As shown in FIG. 8, one of the pair of elastic cylinders 30 is set so that the pressing timing of one of the pair of elastic cylinders 30 is shifted by a half cycle so that the pressure-transmitted material is alternately discharged from the nozzle 53. It may be configured so that it can be sent. At this time,
Each of the receiving ports 31 of the pair of elastic cylinders 30 is provided with one stirring device 40.
(See FIG. 7).

In the case of a pair of left and right compression bodies 15, one compression body 15
When the height of the compression body 15 is slightly shifted from that of the compression body 15 and the elastic cylinder 30 is clamped, the material to be conveyed such as concrete in the elastic cylinder 30 has a curved surface at the tip of the compression body 15. May be formed so as to be able to smoothly feed in the tangential direction, and to prevent damage to the elastic cylinder 30, the compression body 15, the cam 10, and the like due to pinching.

By the way, the specific configuration of the drive transmission mechanism S1, the specific configuration of the cam shaft moving mechanism S2, the specific configuration of the clamping mechanism S3, the specific configuration of the restoring mechanism S4, the specific configuration, the shape, and the dimensions of the base frame A
Specific configuration and shape of the cam bearing 6, mounting means to the base frame A, specific configuration, shape and dimensions of the compression body 15, mounting means and the number to the base frame A, specific configuration and shape of the retraction spring 18 ,
Arrangement position, number, specific configuration and shape of retraction frame 20, fixing means, specific configuration and shape of restoration link 25, mounting means, number, specific configuration of elastic cylinder 30, mounting means, shape The size, material, number, etc. are not limited to those shown in the drawings, but can be freely set as appropriate.

The present invention is configured as described above. Next, an example of use will be described.

First, the drive motor 1 is driven, and the respective cams 10 are rotated via the drive sprocket 2, the chain 3, the driven sprocket 4, and the cam shaft 5. Then, for example, the portion of the elastic cylinder 30 near the outlet 32 is closed by the pressure of the lower compression body 15, and the object to be pressed in the stirring device 40 is received by the gravity (or a forced external force or the like). Elastic cylinder from 31
Filled in 30. Then, after the interval between the middle compression bodies 15 is increased, the filling amount of the conveyed object in the elastic cylinder 30 is increased, and then the upper compression body 15 is pressed toward the receiving port 31 of the elastic cylinder 30 by the pressure. While closing the part, the space between the lower compression bodies 15 expands, the space between the middle compression bodies 15 gradually decreases, and the inner wall surface of the elastic cylinder 30 gradually compresses the object to be pressed toward the outlet 32. Then, the pressure-conveyed object is pressure-fed into the delivery device 50 from the delivery port 32. Then, returning to the beginning, the portion of the elastic cylinder 30 near the outlet 32 is closed by the pressure of the lower compression body 15. By successively and sequentially repeating these, the pressure-conveyed objects are sequentially pressure-fed from the receiving port 31 to the transmitting port 32. Note that the specific operation state of the compression body 15 is not limited to this, and can be set as appropriate according to the number of compression bodies 15 and the size, shape, number, and the like of the elastic cylinder 30.

By the way, the object to be conveyed which has been sequentially pressure-fed to the discharge port 32 of the elastic cylindrical body 30 is pressure-fed into the delivery device 50 to which a suitable high pressure such as compressed air is constantly applied. Will be transported. Moreover,
The appropriate high pressure acts to expand the elastic cylinder 30 (restoring the elastic cylinder 30), and takes a mortar, concrete, or powdery form in the elastic cylinder 30 which has relatively low fluidity. The object to be conveyed, such as a powder, can be easily dropped by gravity. That is, an appropriate high pressure due to compressed air or the like always acts on the lower leg portion of the elastic cylinder 30 which is closed by being pressed by the compression body 15.

When the inside of the base frame A is closed by the cover A1, the closed space can be made substantially vacuum so that the elastic restoring force of the compressed elastic cylinder 30 can be enhanced. become.

(Effects of the Invention) Therefore, according to the pumping device S according to the first aspect, the pumping device S is suitable for pressure-feeding mortar, concrete, or powdery materials having relatively low fluidity, and is capable of compressing these pressure-feeding objects. Reliable and smooth pumping can be performed, and in addition, when trying to increase the amount of pumped material per unit time, or depending on the fluidity, hardness, particle size, etc. of the material to be pumped, a relatively thick elastic cylinder The body 30 and other appropriate elastic cylindrical bodies 30 can be easily replaced. The structure of the pumping device S itself can be simplified, the pumping device S itself can be configured to be robust and strong, and a reliable and smooth operating state can be expected. The pumping device S is excellent in efficiency and economy.

Further, since the elastic cylindrical body 30 is disposed substantially vertically on the base frame A in a state where the receiving port 31 at the upper end and the outlet 32 at the lower end are held, the elastic cylindrical body 30 is Can be surely and stably held. In addition, the object to be conveyed such as mortar, concrete, powdery cement, etc., which has relatively low fluidity, flows through the inside of the elastic cylinder 30 due to its own weight or the like.
, And can facilitate smooth pumping of the object to be pumped.

Further, a pair of cam shafts 5 to which a plurality of cams 10 are fixed
Are rotatably supported by cam bearing members 6 mounted on the upper and lower end portions thereof, and the cam bearing members 6 are mounted on a base frame A so as to be able to advance and retreat in a predetermined direction. And the sliding direction of the pair of compression bodies 15 are matched with each other, and the state in which the elastic cylinder 30 is clamped by each of the pair of compression bodies 15 is adjusted. Since it is configured to be adjustable by approaching the separation, the position of the cam shaft 5 with respect to the base frame A can be changed, and the distance between the cam 10 and the compression body 15 can be freely adjusted, and the adjustment can be performed easily and reliably. As a result, it is possible to easily obtain an optimal clamping state of the elastic cylinder 30 by the compression body 15 according to the properties of the object to be conveyed or the amount of conveyed per unit time. Moreover, by moving the cam shaft 5 greatly,
When the elastic cylinder 30 is not used, any part of the elastic cylinder 30 can be released from being kept elastically deformed by being pressed by the pressing body 15, Damage to the cylindrical body 30, deterioration of the elastic force, and the like can be suppressed as much as possible, and replacement work of the elastic cylindrical body 30 can be performed very easily.

A pair of compression bodies 15 capable of holding the elastic cylinder 30 are slidably mounted on the base frame A, and the pair of compression bodies 15
Since a plurality of sets 15 are arranged at appropriate intervals along the direction of the center of the elastic cylinder 30, the entire elastic cylinder 30 can be easily and securely pressed by the compression body 15, and 30
Can be sequentially pressed. In addition, the elastic cylinder 30 can be symmetrically pressed from the left and right, so that the elastic cylinder 30 is elastically deformed in a well-balanced manner, preventing local elastic deformation of the elastic cylinder 30 and the elastic cylinder 30 itself. Also improves durability.

Then, the pair of camshafts 5 are formed so as to be rotated using the drive motor 1 as a power, and the rotational force of the camshafts 5 is transmitted to the compression bodies 15 via the respective cams 10 to form the pair of compression bodies 15. Each successively presses the elastic cylindrical body 30,
The conveyed object such as concrete in the elastic cylinder 30 is moved to the elastic cylinder 30.
The camshaft 5 is reliably rotated by a single drive motor 1 so that the object to be conveyed in the elastic cylindrical body 30 can be sent from the receiving port 31 to the sending port 32 in order.
In addition to being smoothly pumped toward 32, a large pumping force of the object to be pumped can be obtained even with the drive motor 1 having a relatively small output.

In addition, a retraction spring 18 is interposed between the left and right compression bodies 15 and the base frame A, respectively, and the rebound resilience of the retraction spring 18 is urged in a direction to make the compression bodies 15 approach the cam shaft 5. With this configuration, each of the compression members 15 pressed by the cam 10 can be quickly pulled back by the camshaft 5, and the elastic restoration of the compressed elastic cylinder 30 can be promoted. Moreover, the compression body 15 can be made to approach the camshaft 5 in a well-balanced manner by the left and right retraction springs 18.

In addition, a retraction frame 20 provided with a retraction roller 21 is fixed to the compression body 15, and the cam 10 comes into contact with the retraction roller 21 so that the cam shaft 5 can retract the compression body 15 sideways. Since the compression member 15 is formed, the compression member 15 pressed by the cam 10 can be quickly and reliably and strongly pulled back by the camshaft 5, and the elastic restoration of the compressed elastic cylinder 30 can be performed by the compression member. 15 will not get in the way.

In particular, the center is formed so as to be freely bendable, and both end portions thereof are rotatably supported by the compression body 15, and a roller 26 is rotatably supported by the center portion thereof. A pair of restoration links 25 are arranged so as to straddle the pair of compression bodies 15 and sandwich the elastic cylindrical body 30, and the rollers 26 of the pair of restoration links 25 are traversed by the compression bodies 15. Since the elastic cylinder 30 pressed in a substantially flat surface is pressed from the longitudinal direction in the flat state and is restored to a substantially circular cross section, the pressing body 15 is used to hold the elastic cylinder 30 in a substantially flat cross section. The pressed elastic cylindrical body 30 can be forcibly pressed from a longitudinal direction in a flat state (a direction orthogonal to the sliding direction of the pressing body 15) to be positively restored to a substantially circular cross section,
Even if the elastic cylinder 30 is damaged or deteriorated due to some use, the elastic cylinder 30 can be quickly, reliably and strongly restored, and the elastic cylinder 30 is fed into the elastic cylinder 30 under pressure. It is possible to suppress the difficulty of entry of objects and to suppress a decrease in the amount of the object to be pumped per unit time, so that the pumping efficiency can be maintained in a good state for a long time.

Further, according to the pressure feeding device S of the second aspect, the elastic cylindrical body
The pressing part of the pressing body 15 at 30 can be changed, and the elastic cylinder 30
Can be suppressed, and the compatible mounting period of the elastic tubular body 30 can be extended, which is economically excellent.

Furthermore, according to the pressure feeding device S of the third aspect, the elastic cylindrical body
The compression part of the compression body 15 at 30 can be changed, and the elastic cylinder 30
Can be suppressed, and the compatible mounting period of the elastic tubular body 30 can be extended, which is economically excellent.

[Brief description of the drawings]

1 is a partially cutaway front view, FIG. 2 is a partially cutaway side view, FIG. 3 is a partially omitted plan view, and FIG. 4 is a partially omitted plan sectional view. 5 is a partially omitted plan sectional view, FIG. 6 is a partially omitted side sectional view, FIGS. 7 to 11 show other embodiments, FIG. 7 is a side view, and FIG. 9 is a partially omitted plan view, FIG. 10 is a front sectional view of a receiving port portion of the elastic cylinder, and FIG. 11 is a front sectional view of a delivery device portion. S: pressure feeding device, S1: drive transmission mechanism, S2: cam shaft moving mechanism, S3: clamping mechanism, S4: restoring mechanism, A: base frame, A1: cover, 1 ... drive motor 2, a driving sprocket, 3 a chain, 4 a driven sprocket, 5 a cam shaft, 6 a cam bearing body, 6a a guide groove, 7 a screw rod, 8 a guide piece, 9 …… bearing, 10… cam, 15… compression body, 15a …… guide hole, 16
…… Center roller, 17 …… Guide shaft, 18 …… Retraction spring, 20 …… Retraction frame piece, 21 …… Retraction roller, 25 …… Recovery link, 26 …… Roller, 30 …… Elastic cylinder , 31 ... inlet, 32 ... outlet, 35 ... plate, 36
…… Communication hole, 37… Plate holding part, 40 …… Stirring device,
41: stirring case, 42: rotor, 43: drive motor, 50: delivery device, 51: delivery case, 52: air inlet, 53: discharge port, 54: drive motor.

Claims (3)

(57) [Scope of request for utility model registration] 1. A cylindrical elastic cylinder having a suitable elasticity is disposed substantially vertically on a base frame while a receiving port at an upper end thereof and an outlet at a lower end thereof are held. Has a pair of compression bodies slidable in a predetermined direction so that the elastic cylinder can be compressed.
A plurality of sets are arranged at appropriate intervals along the direction of the center of the elastic cylinder, and a pair of cam shafts to which a plurality of cams are fixed are rotatable by cam bearing bodies attached to upper and lower end portions thereof. In addition to supporting the cam bearing body, the cam bearing body is mounted on a base frame so as to be able to advance and retreat in a predetermined direction, and a pair of cam shafts are formed to be rotated by a driving motor. Is transmitted to each of the compression bodies, and each of the pair of compression bodies sequentially compresses the elastic cylinder, and sequentially pressurizes a material to be conveyed such as concrete in the elastic cylinder from the receiving port of the elastic cylinder to the outlet. Configuration so that the forward and backward directions of the cam bearing body and the sliding direction of the pair of compression bodies match,
The compression state of the elastic cylinder by each of the pair of compression bodies can be adjusted by the approach of the cam shaft to the compression body by the movement of the cam bearing body. A pull-back spring is provided, and the pull-back spring force of the pull-back spring is formed so as to be urged in a direction to bring each of the compression bodies closer to the cam shaft. When the cam is brought into contact with the pull-back roller, the compression body is formed so that the cam shaft can be pulled back, and the center of the compression body is formed to be freely bendable. A pair of restoring links, which are rotatably supported at the center, and a roller is rotatably supported at the center thereof, so as to straddle the pair of compression bodies and sandwich the elastic cylinder. And a pair of restoration link rollers , Pumping device, characterized in that the 挾圧 the elastic cylindrical body and configured to be brought restored cross section substantially circular and pressure from in the longitudinal direction into a flat state in cross section a substantially flat by pressing body. 2. The pressure feeding device according to claim 1, wherein the elastic cylinder is configured to be vertically movable with respect to the base frame. 3. The pressure feeding device according to claim 1, wherein the elastic cylinder is rotatable within a predetermined range with respect to the base frame.