JP2012163036A - Reducing agent replenishing container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple and low cost mechanism for preventing flowing out of a residual liquid of a reducing agent stuck to a nozzle body to the outside and diffusion of the odor to the outside.SOLUTION: A container body 12 has an integrally molded grip part 26 and is partitioned into an urea water storage chamber 28 and a nozzle boy housing chamber 30 formed inside the grip part 26. The nozzle body 44 includes a hollow cylindrical body 46 and a hollow cylindrical shaped base part 48 to the inner peripheral surface of which the base end part 46a of the hollow cylindrical body 46 is connected. The base part 48 includes a first inner screw 50 screwed to the outer screw 42a of the hollow cylindrical body 42, a second inner screw 52 screwed to the outer screw 38a of the hollow cylindrical body 38, and an elastic film 54 closing the opening of base end part 46a. When the nozzle body 44 is screwed to the hollow cylindrical body 38, a small diameter hollow cylindrical body 56 pushes and bends a slit 54a to form an urea water ejection opening 58.

Description

  The present invention relates to a reducing agent replenishing container that houses and carries a reducing agent used in an exhaust gas purifying device for a diesel engine equipped in a vehicle.

  Use of an SCR (Selective Catalytic Reduction) catalyst using urea as a reducing agent to purify nitrogen oxides (NOx) in exhaust gas as an exhaust gas purification device for diesel engines installed in trucks, buses, etc. Has been put to practical use. An exhaust gas purification apparatus using an SCR catalyst is an SCR having the property of selectively reacting nitrogen oxide (NOx) in exhaust gas with a reducing agent in the middle of an exhaust pipe through which exhaust gas flows, even in the presence of oxygen. A catalyst is provided, and NOx in the exhaust gas is selectively adsorbed on the SCR catalyst for purification.

Injecting urea water into the exhaust passage upstream of the SCR catalyst, hydrolyzing urea in the urea water to generate ammonia (NH ₃ ) as a reducing agent, supplying ammonia to the SCR catalyst, and adsorbing to the SCR catalyst The NOx emission concentration is reduced by reducing the NOx thus decomposed into nitrogen and water and discharging them.

  In a vehicle using such an exhaust gas purification apparatus using an SCR catalyst, a urea water tank for storing urea water is provided in order to inject urea water into the exhaust passage upstream of the SCR catalyst. When the urea water in the tank runs out, it is necessary to purchase and supply it at a stand having a dedicated facility, a dealer, or the like.

  However, urea water is also limited in stores and cannot be easily obtained like fuel. Therefore, in order to reduce the risk of running out of urea water as much as possible, the driver often carries a general-purpose container containing several liters of urea water in the passenger compartment. And when the acquisition timing is missed, urea water may be replenished into the urea water tank in the container to ensure the function of the exhaust gas purification device.

  Patent Document 1 discloses a configuration of a container that facilitates pouring of liquid in the container. The configuration of this container will be described with reference to FIG. In the container 100, a flow rate control cylinder 106 having a plurality of openings 108 and flanges 110 on the upper end surface thereof is loosely inserted in the mouth and neck portion 104 of the container main body 102. The nozzle body 112 is inserted inside the flow control cylinder 106 in an inverted state. The flange 114 of the nozzle body 112 is engaged with the flange 110. A cap 116 is detachably fitted to the upper end opening surface of the nozzle body 112. Further, a tightening member 118 is screwed to the mouth and neck portion 104 from the outside of the flange 114.

  When the liquid is to be poured out from the container 100, the clamping member 118 is removed from the mouth-and-neck portion 104, the nozzle body 112 is taken out from the flow rate control cylinder 106, and the nozzle body 112 is reversed with the clamping member 118 again. The flange 114 is fixed, and the nozzle body 112 protrudes outside the mouth neck 104 through the flange hole 120 of the tightening member 118. As a result, the liquid in the container main body 102 is poured out from the nozzle body 112 through the opening 108 of the flow rate control cylinder 106.

Public Notice No. 62-19548

  Urea water emits a strong odor at high temperatures. For this reason, it is not preferable to leave the remaining liquid adhering to the nozzle body when the urea water is poured out. When urea water is stored in the container disclosed in Patent Document 1, the urea water adhered to the inner surface of the nozzle body 112 after the urea water is poured out to the outside through the flange hole 120 of the tightening member 118 and has an odor. The problem arises in that it is released to the outside.

  In the present invention, when the nozzle body is stored in the nozzle body storage chamber, the remaining liquid of the reducing agent attached to the nozzle body flows out to the outside or the odor is diffused to the outside. It is an object of the present invention to prevent this and to enable this with a simple and low-cost mechanism without requiring a cap or a complicated valve mechanism.

  In order to achieve such an object, the reducing agent supply container of the present invention is a reducing agent supply container that accommodates and can carry a liquid reducing agent used in an exhaust gas purification device of a vehicle, and the inside is a reducing agent storage chamber. Container body partitioned into a nozzle body storage chamber, a reducing agent inlet / outlet provided in the reducing agent storage chamber, a nozzle body storage opening provided in the nozzle body storage chamber, and a nozzle body storage chamber. A nozzle body attached to the reducing agent injection outlet when in use, the nozzle body comprising a hollow cylindrical body, and a hollow cylindrical body having a proximal end portion connected to the inner peripheral surface of the hollow cylindrical body The base includes a first mounting portion for mounting the base to the nozzle body housing opening, a second mounting portion for mounting the base to the reducing agent injection outlet, a first mounting portion, and a second mounting portion. Between the mounting portion of the hollow cylindrical body and closing the base end opening of the hollow cylindrical body. Comprising Tsu and preparative with elastic membrane, the reducing agent injection outlets are those provided with a spreading member for widening the slit by bending press elastic membrane when the nozzle body is attached.

  In the reducing agent supply container of the present invention, a nozzle body storage chamber partitioned from the reducing agent storage chamber is formed inside the container body, and the nozzle body is stored in the nozzle body storage chamber except when the reducing agent is dispensed. This is a nozzle body storage type container. The base of the nozzle body is provided with an elastic membrane for closing the base end opening of the hollow cylindrical body, and the elastic membrane has a slit, but when no force is applied to the elastic membrane, the elastic membrane is sealed. It becomes a state. Therefore, when the nozzle body is stored in the nozzle body storage chamber, it is possible to prevent the residual liquid of the reducing agent attached to the nozzle body from flowing out of the nozzle body storage chamber or the odor from being diffused to the outside. In addition, this can be achieved with a low-cost configuration without providing a complicated valve mechanism.

  Further, when the reducing agent is dispensed, when the nozzle body is attached to the hollow cylindrical body of the reducing agent dispensing opening, the reducing agent injection outlet includes an expanding member that pushes and bends the elastic membrane to expand the slit. No operation is required, a reducing agent dispensing opening can be formed inside the base, and the reducing agent can be poured out of the container without any trouble.

  In the reducing agent supply container of the present invention, the container body has a rectangular parallelepiped shape, the reducing agent outlet and the nozzle body storage opening are provided on the top surface of the container body, and a grip portion is formed integrally with the container body along the side surface of the container body. In addition, a nozzle body storage chamber may be formed inside the grip portion. Thus, the urea water can be poured out of the container only by the operator holding the grip portion and tilting the container body at a substantially right angle. Lastly, the urea water remaining at the bottom of the container can be easily poured out to the outside with an easy posture without greatly tilting the grip.

  In the present invention, the first mounting portion includes a first inner screw formed on the inner peripheral surface of the base, and a hollow cylindrical body having an outer screw on the outer peripheral surface is provided around the nozzle body housing opening, It is preferable that the first inner screw is screwed to the outer screw in a state where the cylindrical body is stored in the nozzle body storage chamber. Thus, the base of the nozzle body can be fixed to the nozzle body housing opening with a simple and low-cost configuration.

  In the present invention, the second mounting portion includes a second inner screw formed on the inner peripheral surface of the base, and a hollow cylindrical body having an outer screw on the outer peripheral surface is provided around the reducing agent injection outlet. The second inner screw may be screwed onto the outer screw in a state where the hollow cylindrical body is disposed outside the container body. Thus, when the reducing agent is poured out, the base portion of the nozzle body can be fixed to the reducing agent injection outlet with a simple and low-cost configuration.

  In the present invention, the expanding member is constituted by a small-diameter hollow cylindrical body integrally formed at the tip of the hollow cylindrical body, and when the nozzle body is attached to the reducing agent injection outlet, the elastic membrane is reduced by the small-diameter hollow cylindrical body. It may be configured to push and bend in the agent dispensing direction to form a reducing agent dispensing opening. This makes it possible to reduce the amount inside the base by simply attaching the nozzle body to the hollow cylindrical body of the reducing agent dispensing opening without requiring any operation when dispensing the reducing agent with a simple and low-cost configuration. The agent pouring opening can be formed, and the reducing agent can be poured out of the container without any trouble.

  According to the present invention, in a reducing agent replenishment container that can store and carry a liquid reducing agent used in an exhaust gas purifying device of a vehicle, the inside is partitioned into a reducing agent storage chamber and a nozzle body storage chamber. The container body, the reducing agent injection outlet provided in the reducing agent storage chamber, the nozzle body storage opening provided in the nozzle body storage chamber, and the nozzle body storage chamber are stored in the reducing agent injection outlet during use. A nozzle body, and the nozzle body includes a hollow cylindrical body and a base portion forming a hollow cylindrical body in which a base end portion of the hollow cylindrical body is connected to an inner peripheral surface. A first mounting portion for mounting the base to the nozzle body storage opening; a second mounting portion for mounting the base to the reducing agent injection outlet; and a first mounting portion and a second mounting portion. An elastic membrane with a slit for closing the proximal end opening of the hollow cylindrical body, and a reducing agent injection The outlet has an expansion member that expands the slit by pushing and bending the elastic membrane when the nozzle body is mounted, so when the nozzle body is stored in the nozzle body storage chamber after the reducing agent is poured out With a low-cost configuration without providing a complicated valve mechanism, emission of the reducing agent can be prevented, and when the reducing agent is dispensed, no other operation is required by simply mounting the nozzle body on the reducing agent dispensing opening. The reducing agent can be dispensed without any problem.

It is a perspective view of the urea water supply container which concerns on one Embodiment of this invention. It is front sectional drawing of the said urea water supply container. It is sectional drawing of the nozzle body of the said urea water supply container. It is a partial enlarged plan view of the urea water supply container. It is explanatory drawing which shows operation at the time of urea water extraction of the said urea water supply container. It is sectional drawing which shows one structural example of the liquid extraction part of the conventional container.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

  An embodiment of a reducing agent supply container according to the present invention will be described with reference to FIGS. In FIG. 1, the container body 12 of the urea water supply container 10 according to the present embodiment forms a flat rectangular parallelepiped, and a through space 24 is formed in the side surface 20 having the largest area, and on the side surface 16 side intersecting the side surface 20, A cylindrical grip portion 26 is formed in a direction substantially orthogonal to the top surface 14 or the bottom surface 22.

  As shown in FIG. 2, the interior of the container body 12 is partitioned into a urea water storage chamber 28 and a nozzle body storage chamber 30 by a partition wall 32. The nozzle body storage chamber 30 forms a cylindrical space inside the grip portion 26. A urea water injection outlet 34 for pouring or injecting urea water into the urea water storage chamber 28 is provided on the top surface 14 on the side surface 18 facing the side surface 16, and a nozzle body is provided on the top surface 14 on the side surface 16 side. A nozzle body storage opening 36 for inserting and removing the nozzle body 44 into and from the storage chamber 30 is provided.

  On the outer surface of the top surface 14, a hollow cylindrical body 38 having an outer screw 38 a formed on the outer peripheral surface is provided around the urea water injection outlet 34. Except when the urea water is injected or poured out into the urea water storage chamber 28, the hollow cylinder 38 is screwed with a cap 40 having an inner screw 40a formed on the inner peripheral surface thereof, thereby sealing the urea water injection outlet 34. .

  On the outer surface of the top surface 14, a hollow cylindrical body 42 having an outer screw 42 a formed on the outer peripheral surface is provided around the nozzle body housing opening 36. Except when the urea water is poured out from the urea water supply container 10, the base 48 of the nozzle body 44 is screwed to the hollow cylindrical body 42 to seal the nozzle body storage opening 36. The nozzle body 44 includes a bellows-like hollow cylindrical body 46 having a corrugated cross section in the axial direction, and a hollow cylindrical base 48 to which a base end portion 46a of the hollow cylindrical body 46 is connected. Since the hollow cylindrical body 46 has a bellows shape, it can be easily bent.

  As shown in FIG. 3, the base 48 of the nozzle body 44 forms a hollow cylindrical body, and a first inner screw 50 and a second inner screw 52 are formed on the inner peripheral surface. The diameters of the inner screws are set so that the first inner screw 50 is screwed with the outer screw 42a of the hollow cylindrical body 42, and the second inner screw 52 is screwed with the outer screw 38a of the hollow cylindrical body 38. ing. A base end portion 46 a of the hollow cylindrical body 46 is fixed to the inner peripheral surface of the base portion 48 between the first inner screw 50 and the second inner screw 52.

  Further, a disc-shaped elastic film 54 made of silicon rubber or the like is fixed to the inner peripheral surface of the base 48 adjacent to the base end portion 46 a to shield the inner space of the base 48. As shown in FIG. 4, the elastic film 54 is provided with a linear slit 54a at the center. When no force is applied to the elastic film 54, the slit 54a is sealed. Therefore, when the elastic membrane 54 is not deformed, the inner space of the base 48 is closed. A hollow cylinder 56 having a smaller diameter than the hollow cylinder 38 is integrally formed at the tip of the hollow cylinder 38.

  In such a configuration, when the urea water is injected into the urea water supply container 10, the cap 40 is removed and the urea water is injected. As shown in FIG. 2, the nozzle body 44 is stored in the nozzle body storage chamber 30 except when urea water is supplied to a urea water tank provided in a vehicle or the like. That is, the first inner screw 50 of the base 48 is screwed to the outer screw 38 a of the hollow cylindrical body 42. In this state, since the nozzle body 44 does not contact the inner wall of the nozzle body storage chamber 30, the urea water attached to the nozzle body 44 does not adhere to the inner wall of the nozzle body storage chamber 30.

  At this time, the inner space of the base 48 is closed by the elastic film 54. Therefore, even if the nozzle body 44 used for pouring urea water from the urea water supply container 10 is stored in the nozzle body storage chamber 30 and the remaining urea water adheres to the nozzle body 44, urea Water does not flow out or dissipate outside the nozzle body storage chamber 30.

  When replenishing the urea water tank with the urea water tank 10, the cap is removed from the urea water injection outlet 34 and the nozzle body 44 is taken out from the nozzle body storage chamber 30. Then, as shown in FIG. 3, the second inner screw 52 of the base portion 48 is screwed into the outer screw 38 a of the hollow cylindrical body 38. By screwing the base 48 into the external screw 38a to a predetermined depth, the base 48 can be stably fixed to the hollow cylindrical body 38, the elastic membrane 54 is pushed and bent to the small-diameter hollow cylindrical body 56, and the slit 54a is formed into the small-diameter hollow cylindrical body. It opens circularly according to the end shape of 56. Thereby, a circular urea water pouring opening 58 can be formed inside the base 48.

  Next, the operation when the urea water is poured out from the urea water supply container 10 in this state will be described with reference to FIG. 5A shows a state when the nozzle body 44 is taken out from the nozzle body storage chamber 30, and FIG. 5B shows a state where the cap 40 is removed from the urea water injection outlet 34, and then the urea water A state in which the nozzle body 44 is attached to the injection outlet 34 is shown. FIG. 5C shows a state in which the worker grips the grip portion 26, tilts the container body 12 at a substantially right angle, and pours urea water from the nozzle body 44 to the outside.

  For example, the urea water supply container 10 is fixed to the back surface of the back seat of a driver's seat such as a truck or a bus using a fixing tool. Or you may store using space, such as a door inner side space, Furthermore, you may utilize the storage space outside a vehicle interior.

  According to this embodiment, when the nozzle body 44 is stored in the nozzle body storage chamber 30, the inner space of the base 48 is closed by the elastic film 54, so that the urea water attached to the nozzle body 44 is removed from the nozzle body storage chamber. It is possible to prevent the spilling out to the outside of 30 or the odor from being released to the outside. Further, this can be achieved with a simple and low-cost configuration in which the elastic film 54 is provided without providing a complicated valve mechanism. Further, no operation is required at the time of the urea water pouring, and only the nozzle body 44 is attached to the hollow cylindrical body 38 of the urea water pouring outlet 34, and a circular urea water pouring opening 58 is formed inside the base 48. The urea water can be poured out of the container without hindrance.

  Further, the urea water can be poured out of the container simply by gripping the grip portion 26 and tilting the container body 12 substantially at a right angle. Finally, the urea water remaining on the bottom of the container 10 can be easily poured out to the outside with an easy posture without greatly tilting the grip portion 26.

  Further, when the nozzle body 44 is attached to the nozzle body storage opening 36 or the urea water injection outlet 34, the first inner screw 50 provided at the base end portion 46 a of the nozzle body 44 is replaced with the outer screw 38 a of the hollow cylindrical body 38. Since the second inner screw 52 is screwed to the outer screw 42a of the hollow cylindrical body 42, the nozzle body 44 is attached to the nozzle body storage opening 36 or the urea water injection outlet 34. This is possible with a simple and low-cost configuration.

  According to the present invention, it is possible to prevent the reducing agent attached to the nozzle body from flowing out and radiating out of the container with a simple and low-cost configuration with the nozzle body containing reducing agent supply container.

DESCRIPTION OF SYMBOLS 10 Urea water supply container 12,102 Container main body 14 Top surface 16,18,20 Side surface 22 Bottom surface 24 Through space 26 Grip part 28 Urea water storage chamber 30 Nozzle body storage chamber 32 Partition wall 34 Urea water injection outlet 36 Nozzle body storage opening 38, 42 Hollow cylindrical body 38a, 42a External thread 40, 116 Cap 44, 112 Nozzle body 46 Hollow cylindrical body 46a Base end portion 48 Base portion 50 First internal screw (first mounting portion)
52 Second internal screw (second mounting part)
54 Elastic membrane 56 Small-diameter hollow cylinder 58 Urea water pouring opening 100 Container 104 Mouth and neck portion 106 Flow rate control cylinder 108 Opening 110, 114 Flange 118 Tightening member 120 Flange hole

Claims (5)

In a reductant supply container that contains a liquid reductant for use in an exhaust gas purification device of a vehicle and is portable.
A container body that is internally partitioned into a reducing agent storage chamber and a nozzle body storage chamber, a reducing agent injection outlet provided in the reducing agent storage chamber, a nozzle body storage opening provided in the nozzle body storage chamber, and a nozzle A nozzle body that is stored in the body storage chamber and attached to the reducing agent injection outlet when in use,
The nozzle body includes a hollow cylindrical body and a base portion forming a hollow cylindrical body in which a base end portion of the hollow cylindrical body is connected to an inner peripheral surface, and the base portion is attached to the nozzle body storage opening. A first mounting portion, a second mounting portion for mounting the base to the reducing agent inlet, and a base end portion of the hollow cylindrical body provided between the first mounting portion and the second mounting portion. An elastic membrane with a slit for closing the opening,
A reducing agent replenishing container, wherein the reducing agent injection outlet includes an expanding member that expands the slit by pushing and bending the elastic film when the nozzle body is mounted.   The container body has a rectangular parallelepiped shape, the reducing agent outlet and the nozzle body storage opening are provided on the top surface of the container body, and a grip portion is formed integrally with the container body along the side surface of the container body. The reductant supply container according to claim 1, wherein the nozzle body storage chamber is formed inside the portion.   The first mounting portion includes a first inner screw formed on the inner peripheral surface of the base, and a hollow cylindrical body having an outer screw on the outer peripheral surface is provided around the nozzle body housing opening, and the hollow cylindrical shape is provided. The reducing agent supply container according to claim 1 or 2, wherein the first inner screw is screwed onto the outer screw in a state where the body is stored in the nozzle body storage chamber.   The second mounting portion includes a second inner screw formed on the inner peripheral surface of the base, and a hollow cylindrical body having an outer screw on the outer peripheral surface is provided around the reducing agent injection outlet. The reducing agent supply container according to claim 1 or 2, wherein the second inner screw is screwed onto the outer screw in a state where the body is disposed outside the container main body.   When the expanding member is formed of a small-diameter hollow cylindrical body integrally formed at the tip of the hollow cylindrical body, and the nozzle body is attached to a reducing agent injection outlet, the elastic membrane is reduced by the small-diameter hollow cylindrical body. The reducing agent supply container according to claim 4, wherein the reducing agent supply container is configured to be bent in a direction in which the reducing agent is discharged.

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