Fixed spray ball

Abstract

This invention provides a fixed spray ball, comprising a hollow spherical shell (10), the spherical shell (10) being a rotating body. The spherical shell (10) is lantern-shaped and includes an upper spherical shell (11) and a lower spherical shell (12). The upper end of the upper spherical shell (11) forms a straight tube (111), which is used to connect an inner extension tube (20). In a cross-section passing through the central axis (A) of the spherical shell (10), the upper spherical shell (11) includes a first arc segment (112), the center (O1) of which is located inside the spherical shell (10) and on the side of the central axis (A) closer to the first arc segment (112). The fixed spray ball according to this invention is easy to open, has strong self-cleaning ability, and is not prone to liquid accumulation.

Description

Technical Field

[0001] This invention relates to a spray ball, and more particularly to a fixed spray ball. Background Technology

[0002] With the development of biopharmaceutical technology, spray balls are widely used for cleaning pharmaceutical tanks. Fixed spray balls are favored by consumers due to their advantages such as energy saving, safety and reliability, and economy.

[0003] Drilling holes in spray balls requires a burr-free interior, necessitating high drill speeds and drilling along the normal to the ball to minimize the risk of drill breakage. Currently, conventional fixed spray balls are primarily spherical or boss-shaped. Traditional spray balls suffer from limited opening area, difficulty in drilling, blind spots in cleaning, weak self-cleaning ability, susceptibility to liquid accumulation, and inconvenience in welding. Summary of the Invention

[0004] The purpose of this invention is to overcome or at least mitigate one or more deficiencies of the prior art and to provide a fixed spray ball.

[0005] According to one aspect of the invention, a fixed spray ball comprises a hollow spherical shell, said spherical shell being a rotating body.

[0006] The spherical shell is lantern-shaped and includes an upper spherical shell and a lower spherical shell. The upper end of the upper spherical shell forms a straight tube, which is used to connect to the inner extension tube.

[0007] In a cross-section passing through the central axis of the spherical shell, the upper spherical shell includes a first arc segment, the center of which is located inside the spherical shell and on the side of the central axis closer to the first arc segment.

[0008] In at least one embodiment, the lower end of the upper spherical shell is formed as a first straight segment, which is tangent to and directly connected to the first arc segment, and the upper end of the lower spherical shell is formed as a second straight segment, wherein the first straight segment and the second straight segment are welded together.

[0009] In at least one embodiment, the first straight section and the second straight section are cylindrical with the same diameter, and the first straight section and the second straight section are welded together by butt welding with a flat bevel.

[0010] In at least one embodiment, the total length of the first straight segment and the second straight segment is 7 mm to 13 mm in the direction of the central axis of the spherical shell.

[0011] In at least one embodiment, the spherical shell is provided with a plurality of spray holes, and no spray holes are provided on either side of the welding line between the first straight section and the second straight section on the spherical shell.

[0012] Both the upper and lower spherical shells are machined using turning processes.

[0013] In at least one embodiment, in a cross-section passing through the central axis of the spherical shell, the upper spherical shell further includes a second arc segment, the second arc segment connecting the straight pipe and the first arc segment, the center of the second arc segment being located outside the spherical shell, and the second arc segment being tangent to both the straight pipe and the first arc segment.

[0014] In at least one embodiment, in a cross section passing through the central axis of the spherical shell, the normal at the point where the second arc segment is tangent to the first arc segment intersects the central axis at the bottom of the upper spherical shell, and the angle formed by the normal at the point where the second arc segment is tangent to the first arc segment and the central axis is not greater than 20°.

[0015] In at least one embodiment, in a cross section passing through the central axis of the spherical shell, the lower spherical shell includes a third arc segment, the center of which is located inside the spherical shell and on the side of the central axis closer to the third arc segment, the third arc segment being tangent to and directly connected to the second straight segment.

[0016] In at least one embodiment, the lower end of the lower spherical shell forms a cone, the cone having a semi-cone angle greater than or equal to 30° and less than 90°, and the cone being tangent to and directly connected to the third arc segment.

[0017] The bottom of the cone has a drain hole for draining the cleaning fluid inside the spherical shell.

[0018] In at least one embodiment, the inner wall of the straight pipe is provided with a discharge groove extending along the central axis of the spherical shell, and the cleaning liquid inside the spherical shell can be sprayed out from the discharge groove to clean the outer surface of the inner pipe and / or the spherical shell. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a possible fixed spray ball.

[0020] Figure 2 This is a schematic diagram of a possible fixed spray ball.

[0021] Figure 3 This is a schematic diagram of a fixed spray ball according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of a fixed spray ball according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of a fixed spray ball connected to an inner extension pipe 20 according to an embodiment of the present invention.

[0024] Figure 6 yes Figure 5 Top view.

[0025] Figure 7 This is a partially enlarged view of a discharge trough 115 for a fixed spray ball according to an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] 10 spherical shells;

[0028] 11 Upper spherical shell; 111 Straight pipe; 112 First arc segment; 113 Second arc segment; 114 First straight segment; 115 Discharge groove; 116 Pin hole;

[0029] 12 Lower spherical shell; 121 Third circular arc segment; 122 Second straight segment; 123 Cone; 124 Drainage hole;

[0030] 20 inward extension tube;

[0031] A. Central axis; A0. Central axis; B. Normal; B0. Normal; S. Welding line; M. Angle; M0. Angle; N. Half cone angle; L. Total length; O. Center; O1. Center; O2. Detailed Implementation

[0032] Figure 1 A possible spherical spray ball is shown, with the center O of the sphere located on the central axis A0. If a normal opening is to be achieved, there is a large spray blind zone above the sphere connected to the inner tube (the smallest angle M0 formed by the central axis A0 and the normal B0), and the opening area is limited.

[0033] Figure 2 A possible boss-type spray ball is shown. Although it is possible to drill vertical holes in the boss plane D, it is difficult to drill holes on the outer edge of the boss plane D, as it is easy to puncture the ball. In addition, the upper and lower hemispheres of the boss-type spray ball are usually formed by stamping thin plates, and the dimensional accuracy cannot be guaranteed. This may result in the boss plane D having an inner lower and outer higher shape, which can easily cause liquid accumulation and make it difficult to achieve self-cleaning of the ball.

[0034] The following reference Figures 3 to 7Exemplary embodiments of the present invention are described below. It should be understood that these specific descriptions are for teaching those skilled in the art how to implement the invention only, and are not intended to exhaustively describe all possible ways of the invention, nor to limit the scope of the invention.

[0035] According to one embodiment of the present invention, a fixed spray ball includes a hollow rotating spherical shell 10, which is formed by welding an upper spherical shell 11 and a lower spherical shell 12. The upper end of the upper spherical shell 11 forms a straight pipe 111, which is used to connect an inner extension pipe 20. Both the upper spherical shell 11 and the lower spherical shell 12 can be machined using a turning process. Compared with the traditional thin-plate stamping process, this improves the dimensional accuracy of the sphere and reduces leakage between the spray ball and the inner extension pipe 20.

[0036] Traditional spray balls have a problem with welding difficulties between their upper and lower hemispheres. According to an embodiment of the present invention, the lower end of the upper shell 11 of the fixed spray ball is formed as a first straight segment 114, and the upper end of the lower shell 12 is formed as a second straight segment 122. The first straight segment 114 and the second straight segment 122 are cylindrical with the same diameter and can be welded together by bevel welding. The arrangement of the first straight segment 114 and the second straight segment 122 allows for automatic welding during the processing of the spray ball, thereby improving welding quality, increasing efficiency, and reducing production costs.

[0037] In the direction of the central axis A, the total length L of the first straight segment 114 and the second straight segment 122 can be from 7 mm to 13 mm. Preferably, the total length L of the first straight segment 114 and the second straight segment 122 is 10 mm.

[0038] Welding line S is formed at the junction of the first straight segment 114 and the second straight segment 122. No spray holes are provided on either side of the welding line S (here, the welding line S refers to a virtual line without width, not an actual weld) within a range of 3.5mm. Spray holes can be provided elsewhere as needed.

[0039] To address the limitations of traditional spray ball spheres in terms of limited opening area and difficulty in drilling, according to an embodiment of the present invention, the upper shell 11 of the fixed spray ball has a first arc segment 112 in a cross-section passing through the central axis A of the shell 10. The center O1 of the first arc segment 112 is located inside the shell 10 and on the side of the central axis A closer to the first arc segment 112. The first arc segment 112 is tangent to and directly connected to the first straight segment 114. Because the center O1 of the first arc segment 112 is closer to the center of the traditional spray ball than the center of the traditional sphere, the minimum angle M formed by the normal B of the first arc segment 112 and the central axis A can be smaller than the minimum angle M0 of the traditional spherical spray ball. That is, the first arc segment 112 makes the spray ball's spray blind zone smaller, the opening area larger, and allows for drilling smaller diameter spray holes to reduce the spray flow rate.

[0040] Preferably, in the cross section passing through the central axis A of the spherical shell 10, the minimum angle M between the normal B of the first circular arc segment 112 and the central axis A is not greater than 20°.

[0041] In the cross-section passing through the central axis A of the spherical shell 10, the lower spherical shell 12 also has a third circular arc segment 121. The center O2 of the third circular arc segment 121 is located inside the spherical shell 10 and on the side of the central axis A closer to the third circular arc segment 121. The third circular arc segment 121 is tangent to and directly connected to the second straight segment 122. The function of the third circular arc segment 121 is the same as that of the first circular arc segment 112, and will not be described again.

[0042] like Figure 4 As shown, preferably, the center O1 and the center O2 are spaced apart along the axis A. Preferably, the diameters of the first arc segment 112 and the third arc segment 121 are the same.

[0043] To address the problem of traditional spray balls' inability to achieve self-cleaning, referring to... Figures 5 to 7 According to an embodiment of the present invention, at least one discharge groove 115 is provided on the inner wall of the straight pipe 111 of the fixed spray ball. When the straight pipe 111 is connected to the inner extension pipe 20, the cleaning liquid can be sprayed out from the inside of the ball shell 10 through the discharge groove 115, thereby cleaning the outer surface of the inner extension pipe 20 and / or the ball shell 10 connected to the straight pipe 111, achieving self-cleaning. The shape of the discharge groove 115 is not limited, and can be, for example, a semi-circular groove, a square groove, an elliptical groove, a triangular groove, etc. Figure 7 As shown.

[0044] The straight pipe 111 and the first arc segment 112 can be smoothly connected by the second arc segment 113. The center of the second arc segment 113 is located outside the spherical shell 10. The second arc segment 113 is tangent to the straight pipe 111 and the first arc segment 112 respectively and is directly connected to avoid liquid accumulation.

[0045] The straight tube 111 has a radially opened pin hole 116, and the inner tube 20 also has a corresponding pin hole. The straight tube 111 and the inner tube can be connected by a pin through the pin hole 116.

[0046] According to an embodiment of the present invention, the lower end of the lower shell 12 of the fixed spray ball is formed into a cone 123. The bottom of the cone 123 has a drain hole 124, which can drain the cleaning liquid in the shell 10 after the spray ball is used. The cone 123 is tangent to the third arc segment 121. The semi-cone angle N of the cone 123 is preferably greater than or equal to 30° and less than 90°. The smaller the semi-cone angle N, the faster the cleaning liquid in the shell 10 is drained.

[0047] This invention has at least one of the following advantages:

[0048] (i) The fixed spray ball of the present invention has a structural shape that facilitates drilling smaller diameter spray holes to reduce spray flow rate;

[0049] (ii) The fixed spray ball of the present invention has a sufficient area for opening, which enables water to be sprayed onto the upper part of the ball shell 10 and the root of the inner extension tube 20, thereby improving the self-cleaning ability.

[0050] (iii) The first straight section 114 and the second straight section 122 of the fixed spray ball of the present invention facilitate the use of automatic welding and improve the welding quality of the ball.

[0051] (iv) The fixed spray ball of the present invention has a smooth transition in shape, which can avoid liquid accumulation on the surface of the ball;

[0052] (v) The fixed spray ball of the present invention is machined with high precision by turning process, the spray ball has high dimensional accuracy, the leakage between the spray ball and the inner tube 20 is minimal, and the loss of cleaning fluid is reduced.

[0053] (vi) The fixed spray ball of the present invention has a discharge groove 115 on the inner wall of the upper straight pipe 111, which can clean the outer surface of the inner extension pipe and the outer surface of the spray ball.

[0054] It should be understood that the above embodiments are merely exemplary and are not intended to limit the present invention. Those skilled in the art can make various modifications and changes to the above embodiments under the guidance of the present invention without departing from the scope of the present invention.

Claims

1. A fixed spray ball, comprising a hollow spherical shell (10), wherein the spherical shell (10) is a rotating body, characterized in that, The spherical shell (10) is lantern-shaped and has multiple spray holes. The spherical shell (10) includes an upper spherical shell (11) and a lower spherical shell (12). The upper end of the upper spherical shell (11) forms a straight pipe (111), which is used to connect the inner extension pipe (20). In a cross section passing through the central axis (A) of the spherical shell (10), the upper spherical shell (11) includes a first arc segment (112), the center (O1) of which is located inside the spherical shell (10) and on the side of the central axis (A) closer to the first arc segment (112). The lower end of the upper spherical shell (11) is formed as a first straight segment (114), which is tangent to and directly connected to the first arc segment (112). The upper end of the lower spherical shell (12) is formed as a second straight segment (122), and the first straight segment (114) and the second straight segment (122) are welded together. In a cross-section passing through the central axis (A) of the spherical shell (10), the upper spherical shell (11) further includes a second arc segment (113), which connects the straight tube (111) and the first arc segment (112). The center of the second arc segment (113) is located outside the spherical shell (10), and the second arc segment (113) is tangent to both the straight tube (111) and the first arc segment (112). In the cross section passing through the central axis (A) of the spherical shell (10), the normal line at the point where the second arc segment (113) is tangent to the first arc segment (112) intersects the central axis (A) below the upper spherical shell (11), and the angle (M) formed by the normal line (B) at the point where the second arc segment (113) is tangent to the first arc segment (112) and the central axis (A) is not greater than 20°. In a cross section passing through the central axis (A) of the spherical shell (10), the lower spherical shell (12) includes a third circular arc segment (121).

2. The fixed spray ball according to claim 1, characterized in that, The first straight section (114) and the second straight section (122) are cylindrical with the same diameter, and the first straight section (114) and the second straight section (122) are welded together by butt welding with a flat bevel.

3. The fixed spray ball according to claim 2, characterized in that, In the direction of the central axis (A) of the spherical shell (10), the total length (L) of the first straight segment (114) and the second straight segment (122) is 7 mm to 13 mm.

4. The fixed spray ball according to any one of claims 1 to 3, characterized in that, No spray holes are provided on either side of the welding line (S) between the first straight section (114) and the second straight section (122) of the spherical shell (10). Both the upper spherical shell (11) and the lower spherical shell (12) are machined by turning.

5. The fixed spray ball according to any one of claims 1 to 3, characterized in that, The center (O2) of the third arc segment (121) is located inside the spherical shell (10) and on the side of the central axis (A) closer to the third arc segment (121). The third arc segment (121) is tangent to and directly connected to the second straight segment (122).

6. The fixed spray ball according to claim 5, characterized in that, The lower end of the lower spherical shell (12) forms a cone (123), the semi-cone angle (N) of the cone (123) being greater than or equal to 30° and less than 90°, and the cone (123) being tangent to and directly connected to the third circular arc segment (121). The bottom of the cone (123) has a drain hole (124) for draining the cleaning fluid inside the spherical shell (10).

7. The fixed spray ball according to any one of claims 1 to 3, characterized in that, The inner wall of the straight pipe (111) is provided with a discharge groove (115) extending along the central axis (A) of the spherical shell (10). The cleaning liquid in the spherical shell (10) can be sprayed out from the discharge groove (115) to clean the inner extension pipe (20) and / or the outer surface of the spherical shell (10).

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