Straight-through sight glass

Abstract

The utility model discloses a straight-through sight glass which comprises a glass tube, a first flange and a second flange, the first flange and the second flange are connected to the two sides of the glass tube through threads and are clamped, and the two sides of the glass tube are sleeved with sealing assemblies which are in sealing fit with the first flange and the second flange. The first flange and the second flange are symmetrically provided with a plurality of balance assemblies in telescopic abutting connection with the sealing assemblies respectively, each balance assembly comprises a positioning column, an elastic piece and a positioning panel, and the positioning columns press the elastic pieces to form limiting stretching and retracting and are arranged on the first flange. The positioning panel is installed between the sealing assembly and the positioning column and is in limiting abutting connection with the positioning column, and the straight-through sight glass is provided, so that the stress condition of screwing bolts and nuts on the two sides can be conveniently observed when the pipeline sight glass is installed.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid pipelines, in particular to a straight-through sight glass. Background Art

[0002] Pipe sight glasses are one of the main accessories on industrial pipeline devices and are widely used in pipelines of industrial production equipment such as petroleum, chemical, pharmaceutical, and food. Pipe sight glasses can observe the situation of the medium fluid in the pipeline at any time, play a role in monitoring production and avoiding accidents in the production process. General pipe sight glasses include a glass tube with a fluid channel on the glass tube. The two sides of the fluid channel are connected by flanges to fix the glass tube. The existing technology often uses studs for threaded connection. However, the pipe sight glass of the above structure uses multiple studs and nuts to fix the glass tube. Since the operator cannot ensure that the locking force of each bolt and nut on the glass tube is the same or the locking position is consistent when tightening the bolts and nuts, it is easy for the glass tube to be unevenly stressed and easily damaged by the action of the fluid during use. Utility Model Content

[0003] In view of the above problems, the utility model provides a straight-through sight glass, which is convenient for observing the stress conditions of the bolts and nuts on both sides being tightened when the pipeline sight glass is installed.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a through-view mirror, comprising a glass tube, a first flange and a second flange, the first flange and the second flange being connected to both sides of the glass tube by threads and forming a clamping, sealing components are sleeved on both sides of the glass tube to form a sealing fit with the first flange and the second flange, the first flange and the second flange are respectively and symmetrically provided with a plurality of balancing components forming a telescopic abutment with the sealing components, the balancing components comprising a positioning column, an elastic member and a positioning panel, the positioning column presses the elastic member to form a limited telescopic extension and is arranged on the first flange, the positioning panel is installed between the sealing component and the positioning column and forms a limited abutment with the positioning column.

[0005] By adopting the above technical solution, during installation, sealing components are sleeved on both sides of the glass tube to prevent the glass tube from being bumped and damaged during installation and movement. When the spring is sleeved on the positioning column and installed on the first flange and the second flange, it is pressed and fixed by the positioning panel to form a limited abutment. When the first flange and the second flange are threadedly connected by the stud, the sealing component and the glass tube are gradually compressed. At this time, one end of the positioning column abuts against the sealing component, and when it is squeezed by pressure, the spring is gradually compressed and moves to the other side. During installation, the operator can judge whether the locking force of each bolt and nut on the glass tube is the same or the locking position is consistent through the displacement degree of each positioning column, which facilitates the observation of the force applied by the bolts and nuts on both sides of the pipe sight glass when installing, avoiding excessive squeezing of the glass tube and the problem of tilting after installation.

[0006] The present invention is further configured such that an annular sealing groove is provided on one side of the first flange, and the sealing assembly comprises an annular sealing gasket, which is embedded in the annular sealing groove.

[0007] By adopting the above technical solution, a flexible connection is achieved at the connection of the glass tube, thereby avoiding irreversible damage to the glass tube caused by excessive pressure, and improving the sealing effect.

[0008] The utility model is further configured such that a plug-in groove is provided on one side of the annular sealing gasket, inclined surfaces are provided on both sides of the plug-in groove, the inclined surfaces are arranged in a gradually narrowing state toward the bottom, and a conical surface adapted to the plug-in groove is provided on the glass tube.

[0009] By adopting the above technical solution, the tapered surfaces on both sides of the glass tube and the plug-in groove can form a tighter sealing effect, and the inclined surface of the plug-in groove can better form a tight seal with the glass tube.

[0010] The present invention is further configured such that a plurality of abutting flanges are arranged in an array at the bottom of the plug-in slot, one end of the abutting flange is connected to the annular sealing gasket, and the other end thereof is raised in a semicircular shape toward one side of the glass tube.

[0011] By adopting the above technical solution, the abutting flange can more stably transmit the pressing force to the positioning column, while reducing the side pressure, so that the abutting flange and the glass tube form a point-surface matching effect.

[0012] The utility model is further configured such that a telescopic hole communicating with the outer wall is provided on the first flange, a mounting groove communicating with the annular sealing groove is provided on one side of the telescopic hole, a telescopic portion and a positioning portion are provided on the positioning column, the telescopic portion is arranged and installed in the telescopic hole and extends toward one side of the mounting groove, the elastic member is sleeved on the telescopic portion and installed in the mounting groove, and the positioning portion is connected to the telescopic portion and protrudes toward one side of the inner wall of the mounting groove.

[0013] By adopting the above technical solution, the telescopic hole allows the telescopic part to telescope and move, and the position of the telescopic part is observed at the same time. The positioning part functions to support and abut the elastic member.

[0014] The utility model is further configured as follows: a through hole for the telescopic part to extend is provided on the positioning panel, a plurality of positioning holes are provided on the positioning panel, screw holes corresponding to the positioning holes are provided on one side of the mounting groove, bolts are provided on the positioning panel, the bolts pass through the positioning holes in sequence and are tightened in the screw holes, and the positioning panel is formed on one side of the mounting groove and forms a limiting abutment with the positioning part.

[0015] By adopting the above technical solution, the positioning panel is used to form a limiting abutment on the positioning part to prevent the positioning column from falling. At the same time, the through hole opened can allow one end of the telescopic part to extend and abut against the sealing component to transmit the abutment pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 A portion of the utility model is an enlarged view;

[0018] Figure 3 This is an enlarged view of part B of the present invention.

[0019] In the figure; 1. glass tube; 2. first flange; 3. second flange; 4. sealing assembly; 5. balancing assembly; 8. positioning column; 9. elastic member; 10. positioning panel; 11. annular sealing groove; 12. annular sealing gasket; 13. plug-in groove; 14. inclined surface; 15. conical surface; 16. abutting flange; 17. telescopic hole; 18. mounting groove; 19. telescopic part; 20. positioning part; 21. through hole; 23. positioning hole; 24. screw hole; 25. bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: As shown in the attached Figures 1 to 3The straight-through sight glass shown in the figure includes a glass tube 1, a first flange 2 and a second flange 3. The first flange 2 and the second flange 3 are connected to the two sides of the glass tube 1 by threads and form a clamping. The glass tube 1 is sleeved with a sealing component 4 that forms a sealing match with the first flange 2 and the second flange 3. The first flange 2 and the second flange 3 are respectively symmetrically provided with a plurality of balancing components 5 (four to eight groups are symmetrically arranged) that form a telescopic abutment with the sealing component 4. The balancing component 5 includes a positioning column 8, an elastic member 9 (specifically a pressure spring) and a positioning panel 10. The positioning column 8 presses the elastic member 9 to form a limited telescopic extension and is arranged on the first flange 2. The positioning panel 10 is installed between the sealing component 4 and the positioning column 8 and forms a limited abutment with the positioning column 8. When installed, the glass tube 1 is sleeved on both sides. A sealing assembly 4 is provided to prevent the glass tube 1 from being bumped or damaged during installation and movement. The spring is sleeved on the positioning column 8 and installed on the first flange 2 and the second flange 3. The positioning panel 10 is used to press and fix the spring to form a limited abutment. When the first flange 2 and the second flange 3 are threadedly connected by the stud, the sealing assembly 4 and the glass tube 1 are gradually compressed. At this time, one end of the positioning column 8 abuts against the sealing assembly 4. When squeezed by pressure, the spring is gradually compressed and moves to the other side. During installation, the operator judges whether the locking force of each bolt 25 and nut on the glass tube 1 is the same or the locking position is consistent by the displacement degree of each positioning column 8. This facilitates observation of the force applied when the bolts 25 and nuts on both sides are tightened during installation of the pipe sight glass, thereby avoiding excessive squeezing of the glass tube 1 and tilting after installation.

[0022] As attached Figure 2 As shown, an annular sealing groove 11 is formed on one side of the first flange 2, and the sealing assembly 4 includes an annular sealing gasket 12 (specifically made of rubber). The annular sealing gasket 12 is embedded in the annular sealing groove 11 to achieve a flexible connection at the connection of the glass tube 1, thereby preventing irreversible damage to the glass tube 1 caused by excessive pressure and improving the sealing effect.

[0023] As attached Figure 2 As shown, a plug-in groove 13 is provided on one side of the annular sealing gasket 12, and inclined surfaces 14 are provided on both sides of the plug-in groove 13. The inclined surfaces 14 are arranged in a state of gradually decreasing toward the bottom. The glass tube 1 is provided with a tapered surface 15 adapted to the plug-in groove 13. The tapered surfaces 15 on both sides of the glass tube 1 and the plug-in groove 13 can form a tighter sealing effect, and the inclined surfaces 14 provided on the plug-in groove 13 can better form a tight seal with the glass tube 1.

[0024] As attached Figure 2As shown, a plurality of abutment flanges 16 are arranged in an array at the bottom of the insertion groove 13 (they are an integrated structure, and three are arranged in an array). One end of the abutment flange 16 is connected to the annular sealing gasket 12, and the other end is raised in a semicircular shape toward the side of the glass tube 1. The provision of the abutment flange 16 can more stably transmit the pressing force to the positioning column 8, while reducing the side pressure, so that the abutment flange 16 and the glass tube 1 form a point-to-surface matching effect.

[0025] As attached Figure 2 As shown, a telescopic hole 17 communicating with the outer wall is provided on the first flange 2, and a mounting groove 18 communicating with the annular sealing groove 11 is provided on one side of the telescopic hole 17. A telescopic portion 19 and a positioning portion 20 (which are an integrated structure) are provided on the positioning column 8. The telescopic portion 19 is arranged and installed in the telescopic hole 17 and extends toward one side of the mounting groove 18. The elastic member 9 is sleeved on the telescopic portion 19 and installed in the mounting groove 18. The positioning portion 20 is connected to the telescopic portion 19 and protrudes toward one side of the inner wall of the mounting groove 18. The telescopic hole 17 allows the telescopic portion 19 to telescope and move, while observing the position of the telescopic portion 19. The positioning portion 20 serves to support and abut the elastic member 9.

[0026] As attached Figure 3 As shown, the positioning panel 10 is provided with a through hole 21 for the telescopic part 19 to extend out, and a plurality of positioning holes 23 (corresponding to the number of bolts 25) are provided on the positioning panel 10. A screw hole 24 corresponding to the positioning hole 23 is provided on one side of the mounting groove 18. Bolts 25 are provided on the positioning panel 10, and the bolts 25 pass through the positioning holes 23 in sequence and are tightened in the screw holes 24. The positioning panel 10 is formed on one side of the mounting groove 18 and forms a limiting abutment with the positioning part 20. The positioning panel 10 is used to form a limiting abutment with the positioning part 20 to prevent the positioning column 8 from falling. At the same time, the through hole 21 can allow one end of the telescopic part 19 to extend out and form abutment with the sealing component 4 for the transmission of abutment pressure.

[0027] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational words determined for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention, and cannot be understood as a limitation on the present invention.

Claims

1. A through-view mirror, comprising a glass tube (1), a first flange (2) and a second flange (3), wherein the first flange (2) and the second flange (3) are connected to both sides of the glass tube (1) by screw threads and are clamped, characterized in that: The glass tube (1) is provided with sealing components (4) on both sides thereof and forming a sealing fit with the first flange (2) and the second flange (3); the first flange (2) and the second flange (3) are symmetrically provided with a plurality of balancing components (5) forming a telescopic abutment with the sealing components (4); the balancing components (5) include a positioning column (8), an elastic member (9) and a positioning panel (10); the positioning column (8) presses the elastic member (9) to form a limited telescopic abutment and is provided on the first flange (2); the positioning panel (10) is installed between the sealing component (4) and the positioning column (8) and forms a limited abutment with the positioning column (8).

2. A through-view mirror according to claim 1, characterized in that: An annular sealing groove (11) is provided on one side of the first flange (2), and the sealing assembly (4) includes an annular sealing gasket (12), which is embedded in the annular sealing groove (11).

3. A through-view mirror according to claim 2, characterized in that: A plug-in groove (13) is provided on one side of the annular sealing gasket (12), and inclined surfaces (14) are provided on both sides of the plug-in groove (13). The inclined surfaces (14) are arranged in a gradually narrowing state toward the bottom, and a tapered surface (15) adapted to the plug-in groove (13) is provided on the glass tube (1).

4. A through-view mirror according to claim 3, characterized in that: The bottom of the insertion groove (13) is provided with a plurality of abutment flanges (16) in an array. One end of the abutment flange (16) is connected to the annular sealing gasket (12), and the other end is raised in a semicircular shape toward one side of the glass tube (1).

5. The through-view mirror according to claim 2, characterized in that: The first flange (2) is provided with a telescopic hole (17) connected to the outer wall, and a mounting groove (18) connected to the annular sealing groove (11) is provided on one side of the telescopic hole (17). The positioning column (8) is provided with a telescopic portion (19) and a positioning portion (20). The telescopic portion (19) is arranged and installed in the telescopic hole (17) and extends toward one side of the mounting groove (18). The elastic member (9) is sleeved on the telescopic portion (19) and installed in the mounting groove (18). The positioning portion (20) is connected to the telescopic portion (19) and protrudes toward one side of the inner wall of the mounting groove (18).

6. The through-view mirror according to claim 5, characterized in that: The positioning panel (10) is provided with a through hole (21) for the telescopic portion (19) to extend out, and a plurality of positioning holes (23) are provided on the positioning panel (10). A screw hole (24) corresponding to the positioning hole (23) is provided on one side of the mounting groove (18). Bolts (25) are provided on the positioning panel (10), and the bolts (25) pass through the positioning holes (23) in sequence and are screwed into the screw holes (24). The positioning panel (10) is formed on one side of the mounting groove (18) and forms a limiting abutment with the positioning portion (20).

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