Nozzle

Abstract

To provide a nozzle that is constituted so that a fluid can be easily discharged from the whole horizontally-long width region of a discharge opening.SOLUTION: A nozzle 1 according to the present invention, which is used to take in and discharge a pumped fluid, comprises: a fluid acquisition part 2; a fluid channel 3 that communicates with the fluid acquisition part 2; and a discharge opening 4 that serves as a vent for the fluid through the fluid channel 3. The fluid channel 3 has flow velocity adjusting means 5 for increasing a flow velocity of the fluid.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a nozzle for taking in and discharging a fluid pumped from a fluid supply source.

Background Art

[0002] There is known a putty coating device in which the hose end on the discharge side of a putty pressure pump is connected to a putty supply section (see Patent Document 1). The above-described putty supply section functions as a nozzle for taking in and discharging putty as a fluid pumped from a fluid supply source. The putty supply section as the nozzle includes a flat box body with a gradually widening shape that is substantially an inverted triangle and serves as a putty tank, and a putty discharge slit is formed at the tip of the gradually widening part, which is the bottom side of the substantially inverted triangle of the flat box body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional nozzle described above, that is, a nozzle for taking in and discharging a fluid such as putty to be pumped, since the discharge port is only formed as a horizontally long (wide) opening (slit), there is a problem that it is difficult for the fluid to be discharged from the entire horizontally long width region of the discharge port. In view of the above problems, an object of the present invention is to provide a nozzle configured such that a fluid is easily discharged from the entire horizontally long width region of the discharge port.

Means for Solving the Problems

[0005] The nozzle according to the present invention is a nozzle for taking in and discharging a pumped fluid, and includes a fluid intake portion, a fluid flow path communicating with the fluid intake portion, and a discharge port that is an outlet of the fluid passing through the fluid flow path, and is characterized in that the fluid flow path includes a flow velocity adjusting means for increasing the flow velocity of the fluid. Further, the flow velocity adjusting means is constituted by an upstream partition wall provided on the upstream side of the fluid flow path, an upstream through-hole group that is a plurality of through-holes formed in the upstream partition wall, a downstream partition wall provided on the downstream side of the fluid flow path, and a downstream through-hole group that is a plurality of through-holes formed in the downstream partition wall. Further, the vertical interval between the upper and lower portions of the upstream partition wall is larger than the vertical interval between the upper and lower portions of the downstream partition wall. The upstream through-hole group is constituted by a plurality of through-hole rows formed by a plurality of through-holes spaced apart at a predetermined interval in the left-right direction and provided in the vertical direction. The downstream through-hole group is constituted by a single through-hole row formed by a plurality of through-holes spaced apart at a predetermined interval in the left-right direction. Further, the flow velocity adjusting means is constituted by an upstream partition wall provided on the upstream side of the fluid flow path, and an upstream through-hole group that is a plurality of through-holes formed in the upstream partition wall. Further, the flow velocity adjusting means is constituted by a downstream partition wall provided on the downstream side of the fluid flow path, and a downstream through-hole group that is a plurality of through-holes formed in the downstream partition wall. Further, the flow velocity adjusting means is constituted by a plurality of convex portions or a plurality of concave portions provided on the inner surface of the fluid flow path. Further, the fluid flow path includes a flow path space surrounded by an upstream wall that partitions the fluid intake portion and the fluid flow path, an upper plate, a lower plate, left and right side plates, and a downstream wall in which a discharge port of the fluid is formed. The flow path space is configured such that the interval between the left and right gradually increases from the upstream side to the downstream side, and the vertical interval on the upstream side is larger than the vertical interval on the downstream side. According to the nozzle of the present invention, the fluid taken into the fluid intake portion and flowing into the fluid flow path has its flow velocity increased by the flow velocity adjusting means, becomes easily diffused in the fluid flow path, and is easily discharged from the entire horizontally long width region of the discharge port. That is, it has become possible to provide a nozzle configured such that fluid is easily discharged from the entire horizontally long width region of the discharge port.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0007] Embodiment 1 As shown in FIGS. 1 to 5, the nozzle 1 according to Embodiment 1 is a nozzle 1 for taking in and discharging fluid pumped from a fluid supply source FS. The fluid pumped from the fluid supply source FS using a compressor or the like is, for example, a viscous fluid such as putty formed by mixing a main agent and a curing agent. As shown in FIGS. 1 and 2, for example, a tool such as a spatula 10 for applying putty to a portion P to be coated and the nozzle 1 according to Embodiment 1 are combined to form a putty application device 100. The putty application device 100 is used, for example, when applying putty to the wall surface of a structure as the portion P to be coated to eliminate unevenness on the wall surface, such as when attaching a carbon fiber sheet to the wall surface of a structure such as a tunnel to reinforce it. In addition, in this specification, the upper, lower, left, right, upstream, and downstream of the nozzle 1 are defined and described in the directions shown in FIG. 4.

[0008] The nozzle 1 includes a fluid intake section 2, a fluid flow path 3 communicating with the fluid intake section 2, and a discharge port 4 serving as an outlet for the fluid passing through the fluid flow path 3.

[0009] The fluid intake section 2 includes a connection port 21 to which the other end side of a fluid supply hose 19 having one end connected to a fluid supply source FS is connected, and an intake path 22 communicating from the connection port 21 to the fluid flow path 3.

[0010] The intake path 22 includes, for example, a cylindrical path 23 configured such that one end is the connection port 21 and the other end reaches an upstream wall 31, and a communication path 24 formed in the upstream wall 31 and communicating the cylindrical path 23 with a flow path space 30 described later.

[0011] The fluid flow path 3 is constituted by a flat box body in which a flat flow path space 30 surrounded by an upstream wall 31, an upper plate 32, a lower plate 33, left and right side plates 34, 34, and a downstream wall 35 is formed, and the flow path space 30, which is the internal space of the flat box body, is provided with a flow velocity adjusting means 5 for increasing the flow velocity of the fluid. Incidentally, the upstream wall 31 is a wall partitioning the fluid intake section 2 and the fluid flow path 3, and the downstream wall 35 is a wall in which the discharge port 4 is formed.

[0012] As shown in FIGS. 3 and 4, the discharge port 4 is constituted by left and right elongated through holes (slits) formed so as to extend over substantially the entire left and right width regions of the downstream wall 35, leaving the left and right end sides of the left and right horizontally long rectangular downstream wall 35 that is the downstream end (terminal end) of the flow path space 30.

[0013] The interval between the left and right sides of the flow path space 30 is configured to gradually increase from the upstream side toward the downstream side. That is, as shown in FIG. 4(b), when the interval between the left and right sides of the upstream of the flow path space 30 is W1 and the interval between the left and right sides of the discharge port 4, which is the interval between the left and right sides of the downstream of the flow path space 30, is W2, it is formed such that W1 < W2. That is, the left and right width of the flow path space 30 is configured to gradually increase from the upstream side toward the downstream side so as to change from the interval W1 to the interval W2.

[0014] Further, as shown in FIG. 4(c), the distance between the upper and lower portions of the flow path space 30 is configured such that the distance H1 between the upper and lower portions on the upstream side is larger than the distance H2 between the upper and lower portions on the downstream side. Further, the flow path space 30 is constituted by a flat space formed such that the distance W1 between the left and right sides on the upstream side is larger than the distance H1 between the upper and lower sides, and the distance W2 between the left and right sides on the downstream side is larger than the distance H2 between the upper and lower sides. That is, the flow path space 30 is configured such that the distance between the left and right sides gradually increases from the upstream side toward the downstream side, and the distance between the upper and lower portions on the upstream side is larger than the distance between the upper and lower portions on the downstream side, and is constituted by a flat space configured such that the distance between the left and right sides is larger than the distance between the upper and lower sides.

[0015] Moreover, it includes a tool attachment portion 36 provided so as to extend from the lower end of the upstream wall 31 to the side opposite to the fluid flow path 3 (the fluid intake portion 2 side). For example, the upstream wall 31 is constituted by the vertical plate portion of an L-shaped plate (angle plate), and the tool attachment portion 36 is constituted by the horizontal plate portion of the L-shaped plate (angle plate). For example, the peripheral surface of the fluid intake portion 2 constituted by a cylindrical body constituting the cylindrical path 23 contacts the central side between the left and right sides of the tool attachment portion 36, and the other end opening edge surface of the fluid intake portion 2 contacts the upstream wall 31, and at least one of the tool attachment portion 36 and the upstream wall 31 and the fluid intake portion 2 constituted by a cylindrical body are fixed by welding or the like.

[0016] As shown in FIG. 4(b), the tool attachment portion 36 includes through holes 37 through which mounting bolts 38 for mounting tools such as a spatula 10 are passed through portions located on both the left and right sides of the fluid intake portion 2. Also, as shown in FIG. 2, the spatula 10 is constituted by, for example, a rubber spatula 11 attached to a handle portion 12. Therefore, as shown in FIG. 2, a paste applying device 100 in which the nozzle 1 and the spatula 10 are combined is configured by passing a mounting bolt 38 through a through hole 37 of the tool mounting portion 36 and a through hole formed in the handle portion 12 of the bolt spatula 10 and fastening a nut 39.

[0017] As shown in FIGS. 1, 4 to 6, the flow rate adjusting means 5 includes an upstream partition wall 51 provided on the upstream side of the flow path space 30, an upstream through hole group 5A which is a plurality of through holes 52, 52... formed in the upstream partition wall 51, a downstream partition wall 53 provided on the downstream side of the flow path space 30, and a downstream through hole group 5B which is a plurality of through holes 54, 54... formed in the downstream partition wall 53.

[0018] As shown in FIGS. 5 and 6, the length H3 in the vertical direction of the upstream partition wall 51 is larger than the length H4 in the vertical direction of the downstream partition wall 53. Also, the length WU in the horizontal direction of the upstream partition wall 51 is smaller than the length WD in the horizontal direction of the downstream partition wall 53.

[0019] The upstream through hole group 5A formed in the upstream partition wall 51 is composed of a plurality of through hole rows 52A, 52A... in which a through hole row 52A formed by a plurality of through holes 52, 52... spaced apart at a predetermined interval in the horizontal direction are provided in the vertical direction. For example, as shown in FIG. 5, the upstream through hole group 5A is composed of three through hole rows 52A, 52A, 52A provided side by side in the vertical direction. The downstream through hole group 5B is composed of, for example, a single through hole row 54A formed by a plurality of through holes 54, 54... spaced apart at a predetermined interval in the horizontal direction, as shown in FIG. 6.

[0020] The flow path space 30 is formed into a space including an upstream side space 30A which is a space between the upstream partition wall 51 and the upstream wall 31, a downstream side space 30B which is a space between the downstream partition wall 53 and the downstream wall 35, and an intermediate side space 30C which is a space between the upstream partition wall 51 and the downstream partition wall 53, by being partitioned by the upstream partition wall 51 and the downstream partition wall 53.

[0021] Then, for example, as shown in FIG. 4(c), the upstream space 30A is formed in a space whose lower surface extends horizontally from the upstream side to the downstream side, and the intermediate space 30C and the downstream space 30B extending from the upstream space 30A are formed by spaces that extend downstream in an inclined direction intersecting the horizontal direction and reach the discharge port 4. Also, the intermediate space 30C and the downstream space 30B are configured such that the distance between the upper and lower sides gradually narrows.

[0022] The nozzle according to Embodiment 1 configured as described above includes the flow rate adjusting means 5. Therefore, the paste that has flowed into the upstream space 30A from the fluid supply source FS via the fluid supply hose 19, the cylindrical passage 23 of the fluid intake portion 2, and the communication passage 24 first passes through the upstream through-hole group 5A, causing the flow rate to increase, and then vigorously moves into the intermediate space 30C and diffuses within the intermediate space 30C. Furthermore, the paste that has moved into the intermediate space 30C passes through the downstream through-hole group 5B, causing the flow rate to increase, and then vigorously moves into the downstream space 30B and diffuses within the downstream space 30B, making it easier to spread to both end sides in the horizontally long width direction of the discharge port 4 formed by the horizontally long and wide slit, and making it easier for the fluid to be evenly discharged from the entire width region of the discharge port 4. That is, the paste taken into the fluid intake portion 2 and flowing into the fluid flow path 3 has its flow rate increased by the flow rate adjusting means 5, making it easier to diffuse within the fluid flow path 3 and easier to be discharged from the entire horizontally long width region of the discharge port 4. That is, since the nozzle 1 according to Embodiment 1 is configured to include the flow rate adjusting means 5, it has become possible to provide a nozzle configured such that fluid is easily discharged from the entire horizontally long width region of the discharge port 4.

[0023] Embodiment 2 In Embodiment 1, the nozzle 1 having a configuration in which the flow rate adjusting means 5 is constituted by the upstream through-hole group 5A and the downstream through-hole group 5B was shown. However, the nozzle 1 according to Embodiment 2 has a configuration in which only the upstream through-hole group 5A is provided as the flow rate adjusting means 5. Even for the nozzle 1 according to Embodiment 2, since it is provided with the upstream through-hole group 5A as the flow velocity adjusting means 5, the flow velocity of a fluid such as paste becomes high via the upstream through-hole group 5A, and the diffusion effect of the fluid is improved. Thus, it becomes possible to provide a nozzle configured such that the fluid is easily discharged from the entire horizontally long width region of the discharge port 4.

[0024] Embodiment 3 In Embodiment 1, the nozzle 1 having a configuration in which the flow velocity adjusting means 5 is constituted by the upstream through-hole group 5A and the downstream through-hole group 5B was shown. However, the nozzle 1 according to Embodiment 3 has a configuration in which only the downstream through-hole group 5B is provided as the flow velocity adjusting means 5. Even for the nozzle 1 according to Embodiment 3, since it is provided with the downstream through-hole group 5B as the flow velocity adjusting means 5, the flow velocity of a fluid such as paste becomes high via the downstream through-hole group 5B, and the diffusion effect of the fluid is improved. Thus, it becomes possible to provide a nozzle configured such that the fluid is easily discharged from the entire horizontally long width region of the discharge port 4.

[0025] In addition, in Embodiments 1 and 2, the upstream through-hole group 5A constituted by a plurality of through-hole rows 52A, 52A... was exemplified. However, the upstream through-hole group may be constituted by a single through-hole row formed by a plurality of through-holes spaced apart by a predetermined interval in the left-right direction.

[0026] Embodiment 4 The flow velocity adjusting means 5 may be constituted by a convex portion or a concave portion provided on the inner surface of the fluid flow path 3. For example, the flow velocity adjusting means 5 may be configured to be formed by a convex portion or a concave portion provided on at least one of the plate surfaces (inner surfaces) of the upper plate 32 and the lower plate 33 facing each other. Even for the nozzle 1 according to Embodiment 4, since it has a configuration in which a convex portion or a concave portion is provided as the flow velocity adjusting means 5 in the fluid flow path 3, the flow velocity of a fluid such as paste passing through the convex portion or the concave portion becomes high, and the diffusion effect of the fluid is improved. Thus, it becomes possible to provide a nozzle configured such that the fluid is easily discharged from the entire horizontally long width region of the discharge port 4.

[0027] Embodiment 5 When the nozzle 1 is used as a nozzle for discharging a viscous fluid such as putty, for example, since the putty is formed by mixing a main agent and a curing agent, it cures. Therefore, every time the nozzle 1 is used, it is necessary to clean the discharge port 4 of the nozzle 1, the flow path space 30, etc., but there is a problem that it is difficult to clean. Therefore, if the nozzle 1 is configured such that the discharge port side portion 40 (see FIGS. 1 to 4), which is the downstream end (tip) side of the flat box body constituting the fluid flow path 3, is detachable, the cleaning of the discharge port 4 becomes easy, and the cleaning of the flow path space 30, etc. also becomes easy, which is preferable.

[0028] Embodiment 6 The nozzle 1 may be configured such that the upstream wall 31, the upper plate 32, the lower plate 33, the left and right side plates 34, 34, and the downstream wall 35 of the flat box body constituting the fluid flow path 3 are decomposable. According to the nozzle 1 according to Embodiment 6, the cleaning of the discharge port 4, the flow path space 30, and the flow velocity adjusting means 5 can be performed more easily, which is preferable.

[0029] Note that the fluid discharged using the nozzle 1 according to the present invention may be a fluid other than a viscous fluid such as putty. In addition, in the above, an example of using the tool in combination with the nozzle 1 was shown, but the nozzle 1 may be used alone.

Explanation of Reference Numerals

[0030] 1 Nozzle, 2 Fluid intake part, 3 Fluid flow path, 4 Discharge port, 5 Flow velocity adjusting means, 5A Upstream side through-hole group, 5B Downstream side through-hole group, 30 Flow path space, 31 Upstream wall, 32 Upper plate, 33 Lower plate, 34, 34 Left and right side plates, 35 Downstream wall, 51 Upstream side partition wall, 52 Through-hole, 52A Through-hole row, 53 Downstream side partition wall, 54 Through-hole, 54A Through-hole row.

Claims

1. A nozzle for taking in and discharging a pumped fluid, comprising: a fluid intake section, a fluid flow path communicating with the fluid intake section, and a discharge port serving as an outlet for the fluid passing through the fluid flow path, wherein the fluid flow path is provided with a flow velocity adjusting means for increasing the flow velocity of the fluid.

2. The flow velocity adjusting means is constituted by an upstream partition wall provided on the upstream side of the fluid flow path, an upstream through-hole group which is a plurality of through-holes formed in the upstream partition wall, a downstream partition wall provided on the downstream side of the fluid flow path, and a downstream through-hole group which is a plurality of through-holes formed in the downstream partition wall, the nozzle according to claim 1.

3. The distance between the upper and lower portions of the upstream partition wall is larger than the distance between the upper and lower portions of the downstream partition wall, the upstream through-hole group is constituted by a plurality of through-hole rows in which a plurality of through-holes spaced apart by a predetermined distance in the left-right direction are provided in the vertical direction, the downstream through-hole group is constituted by a single through-hole row formed by a plurality of through-holes spaced apart by a predetermined distance in the left-right direction, the nozzle according to claim 2.

4. The flow velocity adjusting means is constituted by an upstream partition wall provided on the upstream side of the fluid flow path and an upstream through-hole group which is a plurality of through-holes formed in the upstream partition wall, the nozzle according to claim 1.

5. The flow velocity adjusting means is constituted by a downstream partition wall provided on the downstream side of the fluid flow path and a downstream through-hole group which is a plurality of through-holes formed in the downstream partition wall, the nozzle according to claim 1.

6. The flow velocity adjusting means is constituted by a plurality of convex portions or a plurality of concave portions provided on the inner surface of the fluid flow path, the nozzle according to claim 1.

7. The fluid flow path is provided with a flow path space surrounded by an upstream wall partitioning the fluid intake section and the fluid flow path, an upper plate, a lower plate, left and right side plates, and a downstream wall in which a discharge port for the fluid is formed, the flow path space is configured such that the distance between the left and right gradually increases from the upstream side to the downstream side, and the distance between the upper and lower portions on the upstream side is larger than the distance between the upper and lower portions on the downstream side, the nozzle according to any one of claims 1 to 6.

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