Tubular part for slurry ice wash device

Abstract

To provide a tubular part for a slurry ice wash device which can efficiently wash the inside of a pipe to be washed.SOLUTION: When an injection of slurry ice from a slurry ice wash device 10 into a pipe to be washed B is started, the slurry ice is discharged through a reducer body 32 as throttling from an opening Be of the pipe to be washed B. A flow resistance of the slurry ice within the pipe to be washed B is thus increased, and the slurry ice is filled to the top of the inside of the pipe to be washed B. Accordingly, deposition within the pipe to be washed B is adequately ground by the slurry ice, improving the efficiency of a washing operation.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a tubular part for a slurry ice washing device used when washing the inside of a pipe to be washed by injecting slurry ice from the slurry ice washing device into the pipe to be washed. [Background technology]

[0002] In food factories, pharmaceutical factories, and other facilities, the inside of a pipe to be cleaned is cleaned by injecting slurry ice from a slurry ice cleaning device into the pipe. This slurry ice is a sherbet-like saltwater mixture containing ice, and deposits inside the pipe are scraped off by being polished by the slurry ice. The scraped off deposits are then collected in the slurry ice, and the inside of the pipe is hygienically cleaned by being discharged together with the slurry ice from an opening on one end of the pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-230106 Summary of the Invention [Problem to be solved by the invention]

[0004] There are various types of pipes to be cleaned with slurry ice cleaning equipment, and when the inner diameter of the pipe is large, for example (in the food and medical industries, where pipes to be cleaned are much thinner than sewer pipes, the inner diameter of the pipe is relatively large, even though it is much thinner than sewer pipes), the slurry ice may not be packed enough to reach the ceiling of the pipe. When the slurry ice is not packed enough, the slurry ice does not make sufficient contact with the deposits inside the pipe. As a result, the deposits inside the pipe are not sufficiently polished by the slurry ice, which reduces the efficiency of the cleaning work.

[0005] The present invention has been made in light of the above circumstances, and its object is to provide a tubular part for a slurry ice washing device that enables the inside of the pipe to be washed to be washed efficiently. [Means for solving the problem]

[0006] The gist of the tubular part for a slurry ice washing device of the first invention is that (a) it is used when washing the inside of a washed pipe by discharging slurry ice injected into the washed pipe from a slurry ice washing device through an opening on one end surface of the washed pipe, (b) it has a pipe body having a starting end surface and an ending end surface, (c) the starting end of the pipe body is an open-shaped slurry inlet through which the slurry ice is supplied from the opening on one end surface of the washed pipe, (d) the ending end of the pipe body is an open-shaped slurry outlet through which the slurry ice is discharged from the washed pipe, and (e) the pipe body constricts the flow of the slurry ice within the pipe body.

[0007] The gist of the second invention of tubular parts for a slurry ice washing device is that (a) they are used when cleaning the inside of a pipe to be washed by discharging slurry ice injected into the pipe to be washed from an opening on one end surface of the pipe to be washed, (b) they have a pipe body with a starting end surface and an ending end surface, (c) the starting end of the pipe body is an open-shaped slurry inlet through which the slurry ice is supplied from the opening on one end surface of the pipe to be washed, (d) the ending end of the pipe body is an open-shaped slurry outlet through which the slurry ice is discharged from the inside of the pipe to be washed, and (e) the pipe body has a constriction portion whose cross-sectional shape in a direction perpendicular to the axis of the pipe body becomes smaller from the slurry inlet side toward the slurry outlet side.

[0008] The gist of the third invention of the tubular part for a slurry ice washing device is that in the first invention, (a) the slurry inlet is provided with the same shape and size as the opening on one end face of the pipe to be washed, and (b) the slurry outlet is provided with an area smaller than the area of ​​the slurry inlet.

[0009] The gist of the tubular part for a slurry ice washing device of the fourth invention is that, in the second invention, (a) the inner surface of the pipe body is shaped so that the diameter of the circle continues to decrease from the slurry inlet to the slurry outlet.

[0010] The gist of the fifth invention of the tubular part for a slurry ice washing device is that, in the second invention, (a) a straight terminal-side straight pipe section including the slurry outlet is provided at the terminal end of the pipe main body.

[0011] The gist of the tubular part for a slurry ice washing device of the sixth invention is that, in the second invention, (a) a straight pipe section having a straight pipe shape and including the slurry inlet is provided at the starting end of the pipe body.

[0012] The gist of the tubular part for a slurry ice washing device of the seventh invention is that, in the second invention, (a) a straight terminal-side straight pipe section including the slurry outlet is provided at the terminal end of the pipe main body, (b) a straight terminal-side straight pipe section including the slurry inlet is provided at the starting end of the pipe main body, (c) a connecting pipe section is provided on the pipe main body to connect the terminal-side straight pipe section and the starting-side straight pipe section, and (d) the inner surface of the connecting pipe section is shaped so that the diameter of the circle continues to decrease from the end face on the side of the starting-side straight pipe section to the end face on the side of the terminal-side straight pipe section. [Effects of the Invention]

[0013] According to the first and second inventions, when the slurry ice cleaning device starts injecting slurry ice into the pipe to be cleaned, the slurry ice flows into the pipe from the opening at one end of the pipe through the slurry inlet of the pipe body. This slurry ice travels through the pipe body toward the terminal end and is then discharged from the slurry outlet of the pipe body. According to the first invention, the flow of the slurry ice is constricted within the pipe body by the pipe body. According to the second invention, the flow of the slurry ice is constricted within the pipe body by the constricted portion of the pipe body. This increases the flow resistance of the slurry ice within the pipe to be cleaned, making it easier for the slurry ice to sufficiently fill the ceiling of the pipe to be cleaned, even when the inner diameter of the pipe to be cleaned is large. This allows the slurry ice to sufficiently polish away deposits inside the pipe to improve the efficiency of the cleaning process. Furthermore, because the slurry ice is discharged to the outside of the pipe body through the slurry outlet of the pipe body, it is possible to prevent the slurry ice from overflowing from the pipe to be cleaned and flowing into the branch pipe, for example, if the pipe to be cleaned has a branch pipe.

[0014] According to the third aspect of the present invention, the slurry inlet of the pipe body is the same shape and size as the opening on one end of the pipe to be cleaned, so the slurry ice flows smoothly from the opening on one end of the pipe to the slurry inlet and into the pipe body. Furthermore, because the area of ​​the slurry outlet of the pipe body is smaller than the area of ​​the slurry inlet, the flow of the slurry ice is continuously constricted, mainly from midway downstream of the slurry inlet to the slurry outlet. This expands the range of design adjustments, making it easier to set the desired flow resistance of the slurry ice inside the pipe to the desired level.

[0015] According to the fourth aspect of the present invention, the inner surface of the pipe body is shaped so that its diameter continues to decrease from the slurry inlet to the slurry outlet, eliminating the sudden change in the inner surface shape that is one of the reasons why deposits scraped off by the slurry ice tend to accumulate. Therefore, the deposits scraped off by the slurry ice are discharged together with the slurry ice from the slurry outlet at approximately the same time as the slurry ice is discharged. Therefore, the cleanliness of the slurry ice discharged from the slurry outlet is easily synchronized with the degree of cleaning of the pipe to be cleaned, allowing the operator to accurately grasp the progress of the cleaning work by visually checking the cleanliness. Furthermore, the operator can easily clean the inside of the pipe body by inserting a cleaning tool into the pipe body through the slurry inlet or slurry outlet.

[0016] According to the fifth aspect of the present invention, the end of the pipe body is provided with a straight end section including a slurry outlet, which provides directionality to the slurry ice discharged from the slurry outlet. This allows the slurry ice from the slurry outlet to be collected in a container or the like, preventing it from scattering onto the floor.

[0017] According to the sixth aspect of the present invention, a straight pipe-shaped starting-end straight pipe section including a slurry inlet is provided at the starting end of the pipe body, which allows an operator to stably grasp the starting-end straight pipe section with his or her fingers when aligning the slurry inlet of the pipe body with the opening on one end face of the pipe to be cleaned, making it easier to handle the pipe body.

[0018] According to the seventh aspect of the present invention, a straight-pipe terminal-side straight pipe section including a slurry outlet is provided at the terminal end of the pipe main body, thereby preventing slurry ice from scattering onto the floor surface. Furthermore, a straight-pipe starting-side straight pipe section including a slurry inlet is provided at the starting end of the pipe main body, making the pipe main body easier to handle. Furthermore, a connecting pipe section is provided to connect the starting-side straight pipe section and the terminal-side straight pipe section. The inner surface of this connecting pipe section is shaped so that the diameter of the circle continues to decrease from the end face adjacent to the starting-side straight pipe section to the end face adjacent to the terminal-side straight pipe section. This eliminates a sudden change in the inner surface shape, which is one of the causes of accumulation of deposits scraped off by the slurry ice. Therefore, the deposits scraped off by the slurry ice are discharged together with the slurry ice from the slurry outlet at approximately the same time as the slurry ice is discharged. Therefore, the degree of cleanliness of the slurry ice discharged from the slurry outlet is easily synchronized with the degree of cleaning of the pipe to be cleaned, so that the worker can accurately grasp the progress of the cleaning work by visually checking it. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1(a) is a diagram showing a reducer according to a first embodiment of the present invention in use, and FIG. 1(b) is a cross-sectional view of part Xb in FIG. [Figure 2] 1(b) shows a reducer according to a second embodiment of the present invention, and FIG. 1(b) shows a reducer according to a third embodiment of the present invention, corresponding to FIG. 1(b). [Figure 3] (a) is a diagram equivalent to FIG. 1(b) showing a reducer according to Example 4 of the present invention, (b) is a diagram equivalent to FIG. 1(b) showing a reducer according to Example 5 of the present invention, and (c) is a diagram equivalent to FIG. 1(b) showing a reducer according to Example 6 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, first to sixth embodiments of the present invention will be described with reference to the drawings. [Example]

[0021] As shown in Figure 1(a), the slurry ice washing device 10 is transported between the slurry ice production device A and the food production pipe B to be washed, and has multiple tires 12 for transportation. The slurry ice production device A is a stationary type that is installed on the floor and has a water inlet A1 through which water is poured and an inlet A2 through which salt is poured. This slurry ice production device A has a built-in generator (not shown), which produces a sherbet-like washing medium (slurry ice) containing ice particles from saltwater with a salt concentration of 0.8%, which is close to fresh water. This washed pipe B corresponds to the washed pipe of this invention, and the slurry ice washing device 10 corresponds to the slurry ice washing device of this invention.

[0022] As shown in Figure 1(a), the slurry ice washing device 10 is detachably connected to the slurry ice production device A via connecting pipes P1 and P2 when slurry ice is produced. The slurry ice washing device 10 has a built-in slurry ice tank 14. The slurry ice produced by the slurry ice production device A is supplied to the slurry ice tank 14 through connecting pipe P1 (see arrow). The slurry ice in the slurry ice tank 14 is returned to the slurry ice production device A through connecting pipe P2 (see arrow). The slurry ice is circulated between the slurry ice tank 14 and the slurry ice production device A, and the slurry ice is supercooled as it circulates between the slurry ice tank 14 and the slurry ice production device A.

[0023] As shown in Figure 1(a), the slurry ice washing device 10 incorporates an agitation motor 16, and a vertical agitation shaft 18 is connected to the rotation shaft (not shown) of the agitation motor 16. The agitation shaft 18 is housed in the slurry ice tank 14, and an agitation blade 20 is connected to the agitation shaft 18. The agitation blade 20 is immersed in the slurry ice in the slurry ice tank 14. The agitation blade 20 agitates the slurry ice as it is rotated by the agitation motor 16.

[0024] As shown in Figure 1(a), the slurry ice washing apparatus 10 has a built-in slurry ice pipe 22. This slurry ice pipe 22 is L-shaped and has a vertical short section 22a and a horizontal long section 22b. The upper end of the short section 22a is connected to the inside of the slurry ice tank 14 at the lowest part of the slurry ice tank 14. The long section 22b has a slurry ice discharge port 22c that opens to the outside of the slurry ice washing apparatus 10. An on-off valve (not shown) is attached to this slurry ice discharge port 22c, and the on-off valve switches the slurry ice discharge port 22c between an open state and a closed state.

[0025] 1(a), the slurry ice washing device 10 has a built-in output pump 24. When the output pump 24 is operated with the slurry ice discharge port 22c open, it discharges the slurry ice in the slurry ice tank 14 from the slurry ice pipe 22 through the slurry ice discharge port 22c to the outside of the machine. When the output pump 24 is stopped and the slurry ice discharge port 22c is closed, the slurry ice from the slurry ice tank 14 fills the slurry ice pipe 22 and the output pump 24 under its own weight.

[0026] 1(a), an external pipe 26 is connected to the slurry ice discharge port 22c of the slurry ice pipe 22 when the pipe to be cleaned B is being cleaned. This external pipe 26 is detachable from the slurry ice discharge port 22c outside the machine, and the external pipe 26 is also detachable from the pipe to be cleaned B outside the machine. This pipe to be cleaned B is cleaned by injecting slurry ice from the slurry ice discharge port 22c through the external pipe 26. When cleaning this pipe to be cleaned B, the connecting pipes P1 and P2 are removed from the slurry ice cleaning device 10, and the slurry ice production device A and the slurry ice cleaning device 10 are disconnected.

[0027] The slurry ice discharge port 22c of the slurry ice pipe 22 is closed when slurry ice is being produced, and the slurry ice washing device 10 is connected to the slurry ice production device A via the connecting pipes P1 and P2 when slurry ice is being produced. When this slurry ice is being produced, the stirring motor 16 and the output pump 24 are both stopped. Therefore, the slurry ice in the slurry ice tank 14 flows by its own weight through the output pump 24 and fills the slurry ice pipe 22.

[0028] When the production of slurry ice is complete, connecting pipes P1 and P2 are removed from between the slurry ice production device A and the slurry ice washing device 10, and the slurry ice washing device 10 is transported to the installation location of the pipe to be washed B. This transportation of the slurry ice washing device 10 is performed with the slurry ice discharge port 22c closed. During this transportation of the slurry ice washing device 10, the output pump 24 is stopped but the stirring motor 16 is operated. During this transportation of the slurry ice washing device 10, the slurry ice in the slurry ice tank 14 is stirred by the stirring blade 20, preventing the slurry ice from separating into water and ice.

[0029] As shown in Figure 1(a), the slurry ice washing device 10 is connected to the pipe B to be washed via an external pipe 26 at the installation location of the pipe B. The work of connecting the slurry ice washing device 10 to the pipe B to be washed is performed with the stirring motor 16 and the output pump 24 both stopped. During this connection work, the slurry ice discharge port 22c is closed. After this connection work is completed, the stirring motor 16 is turned on again with the slurry ice discharge port 22c closed, and the slurry ice in the slurry ice tank 14 is stirred again.

[0030] When the agitator motor 16 has been operated for a fixed period of time, the agitator motor 16 is stopped and then the slurry ice discharge port 22c is switched to an open state. When this slurry ice discharge port 22c is switched to an open state, the output pump 24 is put into operation. With this output pump 24 in operation, slurry ice is injected from the slurry ice washing device 10 through the external pipe 26 into the pipe B to be cleaned. This slurry ice scrapes off deposits inside the pipe B to be cleaned, and the scraped off deposits are taken up into the slurry ice.

[0031] As shown in Figure 1(b), the pipe to be cleaned B has a straight pipe section B1. This straight pipe section B1 is cylindrical and located at the end of the slurry ice flow in the pipe to be cleaned B. When viewed from the axial direction, the straight pipe section B1 has a circular outer shape. A circular opening Be is provided at the end face of this straight pipe section B1, and the inside of the pipe to be cleaned B is cleaned by discharging the slurry ice from the opening Be. The end face of this straight pipe section B1 corresponds to one end face of the present invention, and the opening Be of the straight pipe section B1 corresponds to the opening in the one end face of the present invention.

[0032] The reducer 30 in Figure 1(a) is used when cleaning the inside of the pipe B by injecting slurry ice into the pipe B from the slurry ice cleaning device 10. This reducer 30 is pressed against the end face of the straight pipe section B1 during the cleaning operation, and the reducer 30 is pressed by the operator's fingers. This reducer 30 corresponds to the tubular part of the present invention.

[0033] As shown in Figure 1(b), the reducer 30 has a reducer body 32. This reducer body 32 is tubular and has a starting end face and a terminal end face. The outer shape of the starting end face of this reducer body 32 is circular, the same as the outer shape of the terminal end face of the straight pipe section B1, and the outer diameter of the starting end face of the reducer body 32 is the same as the outer dimension of the terminal end face of the straight pipe section B1. This reducer body 32 corresponds to the pipe body of the present invention.

[0034] As shown in Figure 1(b), the start end of the reducer body 32 is an open-shaped slurry inlet 34, and the end end of the reducer body 32 is an open-shaped slurry outlet 36. Slurry ice is supplied to the slurry inlet 34 from the opening Be of the pipe B to be cleaned. The shape of this slurry inlet 34 is the same as the shape of the opening Be, which is circular, and the diameter of the slurry inlet 34 is the same as the diameter of the opening Be. This slurry inlet 34 corresponds to the slurry inlet of this invention.

[0035] As shown in Figure 1(b), the slurry outlet 36 of the reducer body 32 discharges the slurry ice from inside the reducer body 32. The shape of this slurry outlet 36 is circular, the same as the shape of the slurry inlet 34. The diameter of this slurry outlet 36 is set smaller than the diameter of the slurry inlet 34, and the area of ​​the slurry outlet 36 is set to be 0.5 to 0.7 times the area of ​​the slurry inlet 34. This slurry outlet 36 corresponds to the slurry outlet of the present invention.

[0036] As shown in FIG. 1(b), the inner surface of the reducer body 32 is a truncated cone whose diameter continues to decrease from the slurry inlet 34 to the slurry outlet 36. That is, the reducer body 32 has an inner surface that connects the slurry inlet 34 and the slurry outlet 36 with a single surface, and the inclination angle D of the inner surface of the reducer body 32 with respect to the axial line AL is set to a constant value less than 90°. That is, the reducer body 32 has a constricted portion 38 whose cross-sectional shape in a direction perpendicular to the axial line AL becomes smaller from the slurry inlet 34 side to the slurry outlet 36 side, and the entire reducer body 32 is the constricted portion 38. The starting end face of the reducer body 32 is pressed against the ending face of the straight pipe section B1. When the reducer body 32 is pressed concentrically against the straight pipe section B1, the slurry inlet 34 overlaps the opening Be of the pipe B to be cleaned when viewed from the direction of the axial line AL. The axial line AL corresponds to the axial line of the present invention, and the throttle portion 38 corresponds to the throttle portion of the present invention.

[0037] According to the above-described first embodiment, when the slurry ice washing device 10 starts injecting slurry ice into the pipe B, the slurry ice flows from the opening Be of the pipe B through the slurry inlet 34 and into the reducer body 32. This slurry ice flows inside the reducer body 32 toward the slurry outlet 36 and is then discharged from the slurry outlet 36. The flow of this slurry ice is constricted within the reducer body 32 by the constricted portion 38 of the reducer body 32. This increases the flow resistance of the slurry ice within the pipe B, making it easier for the slurry ice to sufficiently fill the ceiling of the pipe B even when the inner diameter of the pipe B is large. Therefore, the slurry ice is able to sufficiently polish away the deposits inside the pipe B, improving the efficiency of the cleaning operation.

[0038] According to the above-mentioned Example 1, the slurry ice is discharged from the slurry outlet 36 to the outside of the reducer body 32. Therefore, if the pipe to be cleaned B has a branch pipe, it is possible to prevent the slurry ice from overflowing from the pipe to be cleaned B and flowing into the branch pipe. Moreover, unlike when the inside of the pipe to be cleaned B is cleaned by moving the pig along the inner surface of the pipe to be cleaned B, the pig will not become clogged inside the pipe to be cleaned. Furthermore, since there is no need to inject the pig into the pipe to be cleaned B at high pressure, there is also no need to use a high-pressure injection pump as the output pump 24.

[0039] According to the above-mentioned Example 1, the slurry inlet 34 is provided with the same shape and size as the opening Be of the pipe to be cleaned B, so the slurry ice from the opening Be passes through the slurry inlet 34 and flows smoothly into the reducer body 32. Moreover, because the area of ​​the slurry outlet 36 is set smaller than the area of ​​the slurry inlet 34, the flow of the slurry ice is continuously narrowed mainly from the downstream side of the slurry inlet 34 to the slurry outlet 36. This widens the range of adjustments that can be made in the design, making it easier to set the flow resistance of the slurry ice as desired.

[0040] According to the first embodiment, the inner surface of the reducer body 32 is shaped so that its diameter continues to decrease from the slurry inlet 34 to the slurry outlet 36. This eliminates the sudden change in the inner surface shape, which is one of the reasons why deposits scraped off by the slurry ice tend to accumulate. Therefore, the deposits scraped off by the slurry ice are discharged from the slurry outlet 36 almost simultaneously with the slurry ice. Therefore, the cleanliness of the slurry ice discharged from the slurry outlet 36 tends to synchronize with the cleaning degree of the pipe to be cleaned. Therefore, by visually checking the cleanliness of the slurry ice discharged from the slurry outlet 36, an operator can accurately grasp the progress of the cleaning work. Furthermore, an operator can easily clean the inside of the reducer body 32 by inserting a cleaning tool into the reducer body 32 through the slurry inlet 34 or the slurry outlet 36.

[0041] According to the above-mentioned Example 1, the slurry ice in the slurry ice tank 14 was stirred by the stirring blade 20 before being poured from the slurry ice washing device 10 into the pipe B to be cleaned. This makes it difficult for the slurry ice poured into the pipe B to be cleaned from the slurry ice washing device 10 to separate into water and ice inside the pipe B. This makes it easier for the slurry ice to fill the ceiling part of the pipe B to be cleaned sufficiently, further improving the efficiency of the cleaning work.

[0042] In the above-described first embodiment, the inner surface of the reducer body 32 is formed in a frusto-conical shape, but this is not limited thereto, and it may be formed in the shape of, for example, the second or third embodiment of the present invention. The second and third embodiments of the present invention also achieve the same effects as the first embodiment. Hereinafter, the second and third embodiments of the present invention will be described. [Example]

[0043] As shown in FIG. 2(a), the reducer body 32 has an inlet-side body portion 32a and an outlet-side body portion 32b. The inlet-side body portion 32a is half of the reducer body 32, and the inlet-side body portion 32a is provided to include the slurry inlet 34. The outlet-side body portion 32b is the remaining portion of the reducer body 32 of the inlet-side body portion 32a, and the outlet-side body portion 32b is provided to include the slurry outlet 36. The inclination angle D2 of the inner surface of the outlet-side body portion 32b with respect to the axial line AL is set to an acute angle, and the inclination angle D1 of the inner surface of the inlet-side body portion 32a with respect to the axial line AL is set to an acute angle larger than the inclination angle D2. The cross-sectional shapes of the inlet-side body portion 32a and the outlet-side body portion 32b in a direction perpendicular to the axial line AL of the reducer body 32 become smaller from the slurry inlet 34 side to the slurry outlet 36 side, and function as a throttle portion 38. [Example]

[0044] 2(b), the reducer body 32 has an inner surface that connects the slurry inlet 34 and the slurry outlet 36 with a single smoothly curved surface. That is, the cross-sectional shape of the reducer body 32 in a direction perpendicular to the axial line AL becomes smaller from the slurry inlet 34 side toward the slurry outlet 36 side, and the entire reducer body 32 functions as a throttle section 38.

[0045] In the above-described first to third embodiments, the entire inner surface of the reducer body 32 is formed in a shape inclined with respect to the axial line AL, but this is not limited to this and may be the shape of the fourth embodiment of the present invention. The fourth embodiment of the present invention also achieves the same effects as the first embodiment. Hereinafter, the fourth embodiment of the present invention will be described. [Example]

[0046] 3(a), the reducer body 32 has a start-side straight pipe section 32c, a terminal-side straight pipe section 32d, and a connecting pipe section 32e. The start-side straight pipe section 32c has a straight pipe shape and includes a slurry inlet 34. The inner surface of this start-side straight pipe section 32c is circular and has the same diameter as the slurry inlet 34, and the outer diameter of the start-side straight pipe section 32c is set to be the same as the outer diameter of the start end face of the reducer body 32.

[0047] As shown in FIG. 3(a), the terminal end straight pipe section 32d has a straight pipe shape and includes the slurry outlet 36. The inner surface of this terminal end straight pipe section 32d is circular and has the same diameter as the slurry outlet 36. The connecting pipe section 32e connects the starting end straight pipe section 32c and the terminal end straight pipe section 32d, and the inner surface of the connecting pipe section 32e is frustoconical, with the diameter gradually decreasing from the end face of the starting end straight pipe section 32c to the end face of the terminal end straight pipe section 32d. The cross-sectional shape of this connecting pipe section 32e in a direction perpendicular to the axial line AL becomes smaller from the slurry inlet 34 side to the slurry outlet 36 side, and functions as a throttle section 38.

[0048] According to the fourth embodiment, the straight end section 32d including the slurry outlet 36 is provided at the end of the reducer body 32, which provides directionality to the discharge direction of the slurry ice from the slurry outlet 36. As a result, the slurry ice from the slurry outlet 36 can be received in a container or the like, which prevents the slurry ice from scattering onto the floor.

[0049] According to the above-mentioned Example 4, the start end of the reducer body 32 is provided with a straight pipe-shaped start end straight pipe section 32c including the slurry inlet 34. This allows the operator to stably grip the start end straight pipe section 32c with their fingers when aligning the slurry inlet 34 with the opening Be of the pipe to be cleaned B. This makes it easier to handle the reducer body 32.

[0050] According to the fourth embodiment, the reducer body 32 is provided with a connecting pipe section 32e, and the inner surface of the connecting pipe section 32e is shaped so that its diameter continuously decreases from the end face of the starting straight pipe section 32c to the end face of the terminal straight pipe section 32d. This eliminates the abrupt change in the inner surface shape, which is one of the causes of the accumulation of deposits scraped off by the slurry ice. Therefore, the deposits scraped off by the slurry ice are discharged together with the slurry ice from the slurry outlet 36 at approximately the same time as the slurry ice is discharged. Therefore, the cleanliness of the slurry ice discharged from the slurry outlet 36 is easily synchronized with the cleanliness of the pipe B to be cleaned. Therefore, the operator can accurately grasp the progress of the cleaning operation by visually checking the cleanliness of the slurry ice. Furthermore, the length L of the portion of the inner surface of the reducer body 32 that slopes downward in the direction of the flow of the slurry ice is shortened. This increases the inclination angle D3 of the inner surface of the connecting pipe section 32e relative to the axial line AL, further increasing the flow resistance of the slurry ice inside the pipe to be cleaned B. This reduces the time required from the start of injection of the slurry ice into the pipe to be cleaned B until the slurry ice is completely filled, making it possible to clean the inside of the pipe to be cleaned B in a short time.

[0051] In the above-described fourth embodiment, the inner surface of the connecting pipe portion 32e of the reducer body 32 is formed in a frusto-conical shape, but this is not limited thereto and may be, for example, the shape of the fifth or sixth embodiment of the present invention. These fifth and sixth embodiments of the present invention also achieve the same effects as the fourth embodiment. Hereinafter, the fifth and sixth embodiments of the present invention will be described. [Example]

[0052] As shown in FIG. 3(b), the connecting pipe section 32e of the reducer body 32 has a start-side connecting pipe section 32f and a terminal-side connecting pipe section 32g. The start-side connecting pipe section 32f is the start-side half of the connecting pipe section 32e, and the terminal-side connecting pipe section 32g is the terminal-side remaining part of the connecting pipe section 32e. The inclination angle D5 of the inner surface of the terminal-side connecting pipe section 32g with respect to the axial line AL is set to an acute angle, and the inclination angle D4 of the inner surface of the start-side connecting pipe section 32f with respect to the axial line AL is set to an acute angle larger than the inclination angle D5. The cross-sectional shapes of the start-side connecting pipe section 32f and the terminal-side connecting pipe section 32g in a direction perpendicular to the axial line AL become smaller from the slurry inlet 34 side to the slurry outlet 36 side, and correspond to the throttle section 38. [Example]

[0053] 3(c), the connecting pipe portion 32e of the reducer body 32 has an inner surface shape in which both end faces of the connecting pipe portion 32e are connected by a single smoothly curved surface. The cross-sectional shape of this connecting pipe portion 32e in a direction perpendicular to the axial line AL becomes smaller from the slurry inlet 34 side to the slurry outlet 36 side, and corresponds to the throttle portion 38.

[0054] In the above-mentioned Examples 1 to 6, the inner surface of the reducer body 32 may be formed in a vertically asymmetric shape. It is preferable that the inner surface of the reducer body 32 be formed in a vertically asymmetric shape in which the volume of the upper half of the reducer body 32 is smaller than the volume of the lower half of the reducer body 32. With this configuration, it becomes even more difficult for the ceiling part of the pipe B to be cleaned to be left unfilled with slurry ice.

[0055] In the above-mentioned first to sixth embodiments, the flow of the slurry ice may be restricted by arranging an orifice plate, a punched metal, or the like in the reducer body 32.

[0056] In the above-mentioned Examples 1 to 6, the reducer body 32 may be constructed from a straight pipe. In this case, an orifice plate, punched metal, or the like may be disposed at the end or middle of the reducer body 32 to restrict the flow of the slurry ice at only one location.

[0057] In the above-mentioned Examples 1 to 6, the slurry outlet 36 may be provided in a rectangular shape, and the point is that the area of ​​the slurry outlet 36 should be set smaller than the area of ​​the slurry inlet 34 .

[0058] In the above-described Examples 1 to 6, the diameter of the slurry inlet 34 may be set to be approximately the same as the diameter of the opening Be of the pipe to be cleaned B. This "approximately the same" means that the diameter of the slurry inlet 34 and the diameter of the opening Be differ within a range that allows the starting end face of the reducer body 32 to be pressed concentrically against the terminal end face of the straight pipe section B1.

[0059] In the above-described first to sixth embodiments, the inside of the pipe B to be washed used for food production is washed by the slurry ice washing device 10, but the inside of the pipe B to be washed used for pharmaceutical production, for example, may also be washed.

[0060] The above-described embodiments of the present invention are merely examples, and the present invention can be embodied in various forms with various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit of the present invention. [Explanation of symbols]

[0061] 10: Slurry ice cleaning device, 30: Reducer (tubular part), 32: Reducer body (pipe body), 32c: Straight pipe section at the start end, 32d: Straight pipe section at the end end, 32e: Connecting pipe section, 34: Slurry inlet, 36: Slurry outlet, 38: Constriction section, AL: Axial line, B: Pipe to be cleaned, Be: Opening.

Claims

1. This device is used when cleaning the inside of a pipe to be cleaned by discharging slurry ice injected into the pipe from an opening on one end surface of the pipe to be cleaned from a slurry ice cleaning device, a tube body having a starting surface and a terminal surface; The starting end of the pipe body is an open-shaped slurry inlet through which the slurry ice is supplied from an opening on one end surface of the pipe to be cleaned, The terminal end of the pipe body is an open-shaped slurry outlet for discharging the slurry ice from the inside of the pipe to be cleaned, A tubular part for a slurry ice washing device, characterized in that the pipe body throttles the flow of the slurry ice within the pipe body.

2. This device is used when cleaning the inside of a pipe to be cleaned by discharging slurry ice injected into the pipe from an opening on one end surface of the pipe to be cleaned from a slurry ice cleaning device, a tube body having a starting surface and a terminal surface; The starting end of the pipe body is an open-shaped slurry inlet through which the slurry ice is supplied from an opening on one end surface of the pipe to be cleaned, The terminal end of the pipe body is an open-shaped slurry outlet for discharging the slurry ice from the inside of the pipe to be cleaned, The tube body is A tubular part for a slurry ice washing device, characterized in that the cross-sectional shape of the pipe body in a direction perpendicular to the axial line thereof has a constricted portion which becomes smaller from the slurry inlet side toward the slurry outlet side.

3. The slurry inlet is provided with the same shape and size as the opening on one end surface of the pipe to be cleaned, 3. The tubular part for a slurry ice washing device according to claim 1, wherein the area of ​​the slurry outlet is smaller than the area of ​​the slurry inlet.

4. 4. The tubular part for a slurry ice washing device according to claim 3, wherein the inner surface of said pipe body is formed in a shape in which the diameter of the circle continues to decrease from said slurry inlet to said slurry outlet.

5. 4. The tubular part for a slurry ice washing device according to claim 3, wherein a terminal straight pipe section including the slurry outlet is provided at the terminal end of the pipe body.

6. 4. The tubular part for a slurry ice washing device according to claim 3, wherein a straight pipe section having a straight pipe shape and including the slurry inlet is provided at a starting end of the pipe body.

7. A terminal end straight pipe section including the slurry outlet is provided at the terminal end of the pipe main body, A straight pipe section having a straight pipe shape including the slurry inlet is provided at the starting end of the pipe body, The pipe body is provided with a connecting pipe section that connects the terminal end side straight pipe section and the starting end side straight pipe section, 4. A tubular part for a slurry ice washing device according to claim 3, wherein the inner surface of the connecting pipe section has a shape in which the diameter of the circle continues to decrease from the end face on the side of the starting straight pipe section to the end face on the side of the terminal straight pipe section.

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