JP2007177752A - Operation auxiliary for manual pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation auxiliary capable of reducing operation force of a piston type manual pump and facilitate work of pumping urea water solution or the like out of a storage vessel with a low cost manual pump. <P>SOLUTION: The operation auxiliary 10 for the piston type manual pump 1 is attached by screwing a screw fitting member 4 on a mouth part of the storage vessel D and pumps out liquid by reciprocating operation of a piston rod 5. The operation auxiliary includes a support plate 11 having an opening part for screwing the mouth part of the storage vessel D and a screw fitting member 4 and fixed by screwing the screw fitting member 4 on the mouth part through the opening part, a column 12 erectly provided on the support plate 11, and a rocking arm 13 including a fulcrum part 13a pivotally supported by the column 12, a power point part 13b having power applied thereon and an action point 13c therebetween, and can reciprocatingly operates the piston rod 5 by griping the power point 13b of the rocking arm 13 having the piston rod 5 connected thereon at the action point 13c and rocking the same. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an auxiliary tool that reduces the operating force of a piston type manual pump.

As a pump for pumping out liquid such as water, kerosene, or chemicals from a container with a large capacity such as a drum can, an inexpensive piston type manual pump made of resin as described in Non-Patent Document 1 is commercially available.
This piston-type manual pump has a lid-like screwing member that fits the mouth of a liquid storage container, and is rotatable on a suction pipe that extends from the pump body. It is attached by screwing to the part. A well-known structure with a mechanism for pumping liquid from the storage container by operating the piston in the pump body by reciprocating the piston rod that protrudes outside the pump body, that is, by inserting and removing it many times. It is a pump.
Kousin Co., Ltd. Homepage> Product Information> Home Field> Kerosene Pump> Drum Can Type, [online], [November 24, 2005 Search], Internet <URL: http://www.koshin-ltd.jp/products /domestic/kerosene/pp.html>

  In an exhaust purification device installed in a recent diesel vehicle, an aqueous urea solution is used as a liquid reducing agent for NOx purification, but when supplying this aqueous urea solution from a storage container such as a drum can to an in-vehicle tank, A piston type manual pump as described above is used. However, in the case of a liquid having a high specific gravity such as an aqueous urea solution, the piston rod operating force of the pump becomes large and requires a considerable force, which is a hard work.

In order to reduce this, we would like to use an automatic pump or a hand-held drum pump, but this type of resin pump for chemicals such as urea aqueous solution is expensive and hesitates to adopt it. It can be said that it is a problem of infrastructure development that needs to be solved for the spread of exhaust purification systems.
The present invention focuses on this point, and proposes an operation aid that can reduce the operating force of the piston-type manual pump, making it easy to replenish it with an inexpensive and easy-to-obtain resin-made piston-type manual pump. It is something that can be done.

  The operation assisting tool according to claim 1 of the present invention is attached to the storage container by screwing a screwing member rotatably provided on the suction pipe part extending from the pump body into the mouth of the storage container. The piston rod that protrudes out of the pump body is reciprocally operated to operate the piston in the pump body to pump out the liquid. A support plate having an opening for screwing with a screwing member of the pump, and being fixed by screwing the screwing member into the mouth through the opening, and a support column erected on the support plate A swing arm having a fulcrum portion pivotally supported by the support column, a force point portion for applying force, and an action point portion provided at a position where the space between the fulcrum portion and the force point portion is divided internally or externally; And includes a piston lock at the action point. By oscillating grips the force point portion of the swing arm coupled to, characterized in that it is a piston rod to reciprocally operate.

  According to this operation assisting tool, it can be combined with a commercially available resin-made piston-type manual pump, and the piston rod can be reciprocated more easily than the conventional one by the lever principle of the swing arm. The combination method may be a simple method in which a support plate is sandwiched between a screwing member of a manual pump screwed into the mouth of the storage container and the storage container. In addition, since it is a simple mechanical mechanism including a support plate, a support column, and a swing arm, it can be made much cheaper than an automatic pump or a drum pump.

  According to a second aspect of the present invention, in the operation assisting tool, a connecting arm is hingedly connected to the operating point of the swing arm, and a fixing ring for surrounding and fixing the piston rod of the manual pump is hingedly connected to the connecting arm. It is characterized by being. By providing the link mechanism with the connecting arm and the fixed ring, the rotational motion of the swing arm is converted into a linear motion in the fixed ring, and the reciprocating piston rod can be operated without difficulty.

  The operation assisting tool according to claim 3 of the present invention has a guide member extending from the support column, the guide member is provided with a guide groove along the operation direction of the piston rod of the manual pump, and the connecting arm is provided with the guide arm. It is guided by the guide groove and reciprocates. Since the operation direction of the connection arm is corrected by guiding the connection arm with the guide groove along the operation direction of the piston rod, the reciprocating operation can be performed more smoothly and without excessive force on the piston rod.

  According to a fourth aspect of the present invention, there is provided an operation assisting tool in which a connecting arm is hingedly connected to an action point of a swing arm, and a fixing ring that surrounds and fixes a piston rod of a manual pump to a tip of the connecting arm. And a guide arm that is pivotally supported by a support and is swingably connected to an intermediate portion of the connecting arm. By supporting and guiding the middle part of the connecting arm with a guide arm that swings according to the movement of the swinging arm, rattling of the connecting arm during swinging can be suppressed and the piston rod can be pushed more smoothly. It can be reciprocated without putting.

  The operation assisting tool according to claim 5 of the present invention is characterized in that a pump support ring that surrounds and fixes the pump body of the manual pump is extended from the support column. The support ring and the pump body are fixed to each other so as not to move with each other by the pump support ring, so that blurring when the piston rod reciprocates can be suppressed, and a smoother reciprocating operation can be performed.

  The operation assisting tool according to claim 6 of the present invention is characterized in that a leg member that protrudes from the support plate and abuts against the storage container is provided in the vicinity of the upright portion of the support column. According to this, for the reason that the height (projection amount) of the mouth of the storage container is high, or that the screwing member needs to be screwed to the mouth of the storage container via the spacer, the support plate and When there is a gap between the storage container and the support member, the leg member protruding from the support plate comes into contact with the storage container to support it, so that it is possible to suppress wobbling of the operation assisting tool during operation.

  The operation assisting tool according to claim 7 of the present invention is characterized in that the leg member is screwed to the support plate, and the protruding amount thereof can be adjusted. According to this, since the protrusion amount can be variably adjusted only by rotating the leg member, it can be easily adapted even if the gap between the support plate and the storage container changes.

  According to the manual pump operation assisting tool of the present invention, the assisting tool itself can be manufactured at a low cost and can be easily retrofitted to the piston-type manual pump, so that it is much easier to adopt than an expensive automatic pump or the like. . Further, the lever operating force can be reduced by the lever principle, and a replenishing operation can be easily performed using a resin-made piston-type manual pump that is inexpensive and easily available. Therefore, if it is provided as an infrastructure for urea aqueous solution replenishment work, it contributes to the popularization of exhaust purification devices for diesel vehicles.

1 to 3 show and explain a first embodiment of the present invention.
The piston type manual pump 1 of this embodiment is a commercially available resin pump for chemicals, and is used by being attached to the mouth of a drum can D containing an aqueous urea solution as an example of a storage container. That is, the screwing member 4 is rotatably provided around the suction pipe portion 3 extending from the pump body 2, and the suction pipe portion 3 is inserted into the can from the mouth portion of the drum can D, and the screwing member 3. Is screwed onto the mouth of the drum can D, so that the pump body 2 is mounted on the mouth. The piston rod 5 protrudes outside the pump body 2 from the side opposite to the side where the suction pipe portion 3 of the pump body 2 extends, that is, from the top when attached to the drum can D. The piston (not shown) in the pump body 2 operates by reciprocating linearly, and the contents of the drum can D are pumped out from the suction pipe portion 3 through the hose 6. When the cap 7 at the tip of the piston rod 5 is loosened when a predetermined amount has been pumped, the pumping can be stopped and the pump has a well-known general configuration.

The operation assisting tool 10 assembled in such a manual pump 1 includes a support plate 11, a support column 12 standing on the support plate 11, and a swing arm 13 pivotally supported by the support column 12. ing.
The support plate 11 is made of a substantially rectangular stainless steel plate, and has an opening (not shown) for screwing the opening of the drum can D and the screwing member 4, and the opening of the drum can D is passed through this opening. By screwing the screwing member 4 onto the screw, it is fixed so as not to move. That is, the screwing member 4 has a screwing part 4a and a wider flange part 4b, and screwing the screwing part 4a protruding through the opening of the support plate 11 to the inner peripheral surface of the mouth of the drum can D. When the flange portion 4b presses the support plate 11, the support plate 11 is fixed. In this case, the support plate 11 may be fixed between the flange portion 4b and the end of the mouth, or may be fixed by pressing the support plate 11 against the surface of the drum can D by pressing the flange portion 4b. Also good. Further, when the screwing portion 4a of the screwing member 4 is screwed to the outer peripheral surface of the mouth portion, the screwing portion 4a is screwed into the mouth portion of the drum can D protruding through the opening portion of the support plate 11. When they are combined, the support plate 11 is pressed by the tip of the threaded portion 4a and pressed against the surface of the drum 4 to be fixed. Such an opening of the support plate 11 can be formed as a through hole or a notch.

  The support plate 11 is further provided with leg members 11 a that protrude from the support plate 11 and abut against the surface of the drum D at two locations in the vicinity of the standing portion of the support column 12. The leg member 11a has a screw shape with a knob formed on the head, and is screwed onto the support plate 11 so that the amount of protrusion from the support plate 11 can be adjusted. By providing the leg member 11a, the screw member 4 needs to be screwed to the mouth portion of the drum can D via a spacer when the height of the mouth portion of the drum can D (the amount of protrusion from the surface) is high. When there is a relatively wide gap between the support plate 11 and the drum can D, for example, the leg member 11a protruding from the support plate 11 comes into contact with the surface of the drum can D to support it, and the operation at the time of operation The wobbling of the auxiliary tool 10 can be suppressed. Further, in the case of the leg member 11a of the present embodiment, since the protrusion amount can be variably adjusted by simply rotating the leg member 11a with the knob on the head, it can be easily adapted even if the gap between the support plate 11 and the drum D is different. Be made. In particular, in the case of the present embodiment, the leg member 11a is provided at the corner of the support plate 11. Therefore, when the leg member 11a is rotated and protruded, the support plate 11 can be made to warp. By pressing with the reaction force, it becomes more effective in suppressing wobble.

  The support column 12 erected on the support plate 11 is formed of an elongated stainless steel plate, and is erected by bolting the base flange 12 a of the support column 12 to the support plate 11. Reinforcing ribs 12b are provided on both sides of the support column 12 from the base flange 12a to an intermediate height, and above this, a shaft support member 12c for supporting the swing arm 13 from both sides is provided. It is fixed. The shaft support member 12c may have the same shape as that of the support column 12 provided on the support plate 11 in parallel with the support column 12, that is, a shape in which the swing arm 13 is sandwiched between the two support columns 12.

  In addition, a pump support ring 14 that surrounds and fixes the pump body 2 is bolted and extended at an intermediate portion of the support column 12. The pump support ring 14 is a semicircular two-part type, and by surrounding and supporting the periphery of the pump body 2, the support column 12 and the pump body 2 are fixed to each other so as not to move relative to each other. Thereby, the blurring when the piston rod 5 reciprocates can be suppressed, and the reciprocating operation can be performed smoothly.

A guide member 15 is also extended at the intermediate portion of the column 12 by bolting together with the shaft support member 12c, and a guide groove 15a is provided in the guide member 15 along the operation direction of the piston rod 5. It has been.
The swing arm 13 is pivotally supported on the upper end portion of the support column 12 so as to swing around the bolt with the support shaft 12 and the shaft support member 12c sandwiched from both sides. The oscillating arm 13 divides the fulcrum part 13a that is pivotally supported by the support column 12, the force point part 13b that applies force, and the space between the fulcrum part 13a and the force point part 13b (line segment). It has the action point part 13c provided in the position. The piston rod 5 is connected to the acting point portion 13c via a link mechanism, and the swinging arm 13 is swung by gripping the force point portion 13b so that the piston rod 5 can be easily reciprocated by the lever principle. It has become. In the case of the present embodiment, since the force point and the action point belong to the same side with respect to the fulcrum (that is, the inner part), the action point part 13c of the swing arm 13 has the fulcrum part 13a and the force point part 13b. It is provided in the intermediate part made into the arch shape between. On the other hand, if the lever is located on the opposite side of the fulcrum (that is, outside), the action point 13c of the swing arm 13 is separated from the force point 13b with the fulcrum 13a in between. Will be extended to the opposite side. Either form is possible as long as the action point part 13c is closer to the fulcrum part 13a than the force point part 13b, but an internal division form like this embodiment is advantageous in terms of compactness.

  In the present embodiment, the connecting arm 16 is hingedly connected to the action point portion 13c of the swing arm 13 so as to be rotatable. A fixing ring 17 that surrounds and fixes the piston rod 5 is hinged to the connecting arm 16. Specifically, one connecting pin 16a is inserted through and fitted to the lower end portion of the connecting arm 16 suspended from the swing arm 13, and "L" support is provided at both ends of the connecting pin 16a. Two arms 16b are hingedly connected, and the side surfaces of the fixing ring 17 are welded to the distal ends of the support arms 16b. By providing the link mechanism by the connecting arm 16 and the fixed ring 17, the rotational motion of the swing arm 13 is converted into a linear motion by the fixed ring 17, and the reciprocating piston rod 5 can be operated without difficulty.

  Further, the connecting pin 16a of the connecting arm 16 is disposed so as to slide in the guide groove 15a provided in the above-described guide member 15, whereby the connecting arm 16 is guided by the guide groove 15a to reciprocate. To do. By guiding the connecting arm 16 by the guide groove 15a along the operating direction of the piston rod 5, the operating direction of the connecting arm 16 is corrected, the blur is suppressed, and the reciprocating operation is smoothly performed without excessively pushing the piston rod. can do.

  According to the operation assisting tool 10 having the above structure, the reciprocating operation of the piston rod can be performed more easily than the conventional one by combining with a commercially available manual pump 1 and using the lever principle of the swing arm 13. The combination method may be a simple method in which the support plate 11 is sandwiched between the screw member 4 of the manual pump 1 screwed into the mouth of the drum can D and the drum can D, and the support plate 11 can be press-molded. Since it is a simple mechanical mechanism including the support 12 and the swing arm 13, it can be made much cheaper than an automatic pump or a drum pump.

  Assembling the manual pump 1 and the operation assisting tool 10 first places the operation assisting tool 10 so that the opening of the support plate 11 is aligned with the mouth of the drum D. Then, the suction pipe portion 3 is inserted into the mouth portion through the opening portion, and the screwing member 4 is screwed into the mouth portion. When the screwing member 4 is screwed, the support plate 11 is pressed and fixed, and the leg member 11a comes into contact with the surface of the drum can D and becomes a support. The contact state of the leg member 11a can be adjusted by rotating it with a knob on the head.

  Thereafter, the pump support ring 14 surrounding the pump body 2 is bolted to the support column 12, and the piston rod 5 is surrounded by the fixing ring 17 and connected to the swing arm 13 via the connecting arm 16. When the guide member 15 is bolted to the support column 12 so that the connection pin 16a of the connection arm 16 is accommodated in the guide groove 15a, the manual pump 1 and the operation assisting tool 10 are assembled. After assembly, when the force point portion 13b of the swing arm 13 of the operation assisting tool 10 is swung up and down by hand, the piston rod 5 is reciprocated from the action point portion 13c via the connecting arm 16, and the lever principle is used. Thus, the urea aqueous solution in the drum D can be pumped out easily. When the cap 7 is loosened after the necessary amount has been pumped, the pumping can be stopped.

4 and 5 show a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as 1st Embodiment shown in FIGS. 1-3, and duplication description is abbreviate | omitted.
The operation assisting tool 10 according to this embodiment includes a support plate 11, support columns 20 and 21 erected on the support plate 11, and a swing arm 13 pivotally supported on the support columns 20 and 21.
In the present embodiment, two support columns 20 and 21 are erected on the support plate 11 provided with the leg members 11a as in the first embodiment. Both struts 20, 21 are of the same shape formed from elongated stainless steel plates, and the base flanges 20 a, 21 a of the struts 20, 21 are bolted to the support plate 11 and are erected in parallel at a predetermined interval. The swing arm 13 is sandwiched between the two support columns 20 and 21. Reinforcing ribs 20b and 21b are provided over the entire length on both sides of each support column 20 and 21, respectively. A pump support ring 14 as in the first embodiment for surrounding and fixing the pump body 2 may be provided at an intermediate portion between the columns 20 and 21. In the case of the present embodiment, the guide arm 22 is pivotally supported by the clip 22a so as to be prevented from falling off and attached to an intermediate portion of the one support column 20 so as to swing. Note that the guide arm 22 may be provided on both the columns 20 and 21.

  The swing arm 13 is pivotally supported at the upper end portion of the columns 20 and 21 such that the swing arm 13 swings around the bolts so as to be sandwiched by both columns 20 and 21 from both sides. In the present embodiment, the connecting arm 30 is hingedly connected to the action point 13c of the swing arm 13 so as to be rotatable. The connecting arm 30 according to the present embodiment is configured by pivotally supporting two arm members having the same shape on both sides of the swing arm 13, and an intermediate portion thereof is bent to form a support arm according to the first embodiment. It has a shape integrally formed with 16b. And the fixing ring 17 which surrounds and fixes the piston rod 5 to the front-end | tip part is connected by welding.

  A guide arm 22 pivotally supported by the support column 20 is hinged to the intermediate portion of the connecting arm 30 to prevent the guide arm 22 from falling off by a clip 22b. The guide arm 22 swings together in accordance with the operation of the swing arm 13, and supports the intermediate portion of the connecting arm 30 so that it does not shake in the front-rear and lateral directions. In other words, rattling of the connecting arm 30 when receiving a force from the swing arm 13 is suppressed, and the operation direction is corrected so that the piston rod 5 can be smoothly reciprocated without excessive force. Yes.

  Since the swing of the guide arm 22 draws an arc trajectory, a swell of about several millimeters occurs with respect to the linear trajectory of the reciprocating motion, but the piston rod 5 originally has a play (operation allowance) of several millimeters or more. It works smoothly without any problems by assembling it.

The perspective view which showed the state which attached the operation assistance tool which concerns on 1st Embodiment of this invention to the drum can with the piston type manual pump. The side view of the operation assistance tool and piston type manual pump of 1st Embodiment. The side view of the operation assistance tool and piston type manual pump seen from the X direction in FIG. The side view of the operation assistance tool and piston type manual pump which concern on 2nd Embodiment of this invention. The side view of the operation assistance tool and piston type manual pump seen from the Y direction in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piston type manual pump 2 Pump main body 3 Suction pipe part 4 Screwing member 5 Piston rod 6 Hose 7 Cap 10 Operation assistance tool 11 Supporting plate 11a Leg member 12, 20, 21 Support | pillar 13 Swing arm 13a Supporting point part 13b Force point part 13c Action point portion 14 Pump support ring 15 Guide member 15a Guide grooves 16, 30 Connection arm 17 Fixing ring 22 Guide arm

Claims (7)

A screwing member provided rotatably in the suction pipe extending from the pump body is screwed into the mouth of the storage container, and is attached to the storage container, and the piston rod protruding outside the pump body is reciprocated. By operating, a piston-type manual pump operation aid that pumps liquid by operating the piston in the pump body,
A support plate having an opening for screwing the mouth portion and the screwing member, and fixed by screwing the screwing member to the mouth portion through the opening;
A support column erected on the support plate;
A swing arm having a fulcrum portion pivotally supported by the support, a force point portion for applying a force, and an action point portion provided at a position where the space between the fulcrum portion and the force point portion is divided internally or externally. Consisting of
Operation of a manual pump characterized in that the piston rod can be reciprocated by gripping and swinging the force point portion of the swing arm in which the piston rod is connected to the action point portion. Auxiliary tool.   2. The manual operation according to claim 1, wherein a connecting arm is hinge-connected to an action point portion of the swinging arm, and a fixing ring surrounding the piston rod and being fastened and fixed is hinge-connected to the connecting arm. Pump operation aid.   A guide member extends from the support column, and the guide member is provided with a guide groove along an operation direction of the piston rod, and the connecting arm is guided by the guide groove to reciprocate. The operation assistance tool for the manual pump according to claim 2.   A connecting arm is hingedly connected to the operating point of the swing arm, and a fixing ring that surrounds and fixes the piston rod is connected to the tip of the connecting arm, and an intermediate part of the connecting arm 2. The manual pump operation assisting device according to claim 1, wherein a guide arm pivotably supported by the support is hinged.   The operation support tool for a manual pump according to any one of claims 1 to 4, wherein a pump support ring that surrounds and fixes the pump body is extended from the support column.   6. The manual pump operation assist according to claim 1, further comprising a leg member that protrudes from the support plate in the vicinity of an upright portion of the support column and abuts against the storage container. Ingredients.   7. The manual pump operation assisting device according to claim 6, wherein the leg member is screwed to the support plate, and the protrusion amount thereof is adjustable.

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