An adjustable differential pressure gauge

Abstract

The present invention discloses an adjustable differential pressure gauge, which relates to the technical field of differential pressure gauges for industrial manufacturing, and specifically an adjustable differential pressure gauge, comprising a mounting seat, a central limit island is fixedly mounted on the top of the mounting seat, and a U-shaped differential pressure gauge is clamped on the outside of the central limit island, the top of the central limit island is threadedly connected with two limit knobs, and a scale is clamped on the top of the central limit island through the limit knob. The adjustable differential pressure gauge can drive the scale to move inside the U-shaped differential pressure gauge by rotating the adjustment gear and rotating the auxiliary adjustment rack, and can adjust the relative position of the scale and the U-shaped differential pressure gauge according to the actual situation on site, accurately locate the water zero position in the U-shaped differential pressure gauge, thereby increasing the adjustability of the U-shaped differential pressure gauge, facilitating reading, and improving the accuracy of detection. At the same time, when the scale moves, the scale is limited by two limit knobs, thereby improving the stability of the scale when moving.

Description

Technical Field

[0001] The invention relates to the technical field of differential pressure gauges for industrial manufacturing, in particular to an adjustable differential pressure gauge. Background Art

[0002] The U-shaped water column differential pressure gauge is the most commonly used pressure measuring instrument at present. It uses the principle of fluid mechanics to convert the pressure signal into the height difference of the water column, and uses the static pressure generated by a water column of a certain height to balance the measured pressure to measure the positive pressure, pressure difference and negative pressure, that is, the vacuum degree. Because the U-shaped water column differential pressure gauge has a simple structure, low price and convenient use, it is widely used in industrial production. The principle of use of the U-shaped water column differential pressure gauge: before the U-shaped differential pressure gauge is connected to the pressure measuring point, the liquid levels on both sides of the U-shaped glass tube are level at the zero scale line. When one end of the U-shaped tube is connected to the pressure measuring point, the liquid level in the U-shaped tube will change. If the liquid level on the side connected to the pressure measuring point drops, it means that the pressure at the pressure measuring point is positive pressure, otherwise it is negative pressure. According to different working principles, it can be divided into three types: liquid column type, elastic type and sensor type.

[0003] At present, in the field of industrial manufacturing, differential pressure gauges are an indispensable part, and various differential pressure gauges are an indispensable part of machinery and equipment. However, the current differential pressure gauges are prone to excessive or insufficient water, and are prone to inaccurate zero position, inconvenient repair and installation operations, and are prone to scrapping. In summary, the differential pressure gauges currently used in industrial manufacturing installations have the following main problems: the scale of the differential pressure gauge is fixed and difficult to adjust; the amount of water in the differential pressure gauge is difficult to adjust, and it is easy to have too much or too little water;

[0004] After the differential pressure gauge is installed, it is difficult to disassemble and install when adding water and disassembling for inspection, which may easily cause damage and leakage. For this reason, we propose an adjustable differential pressure gauge to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an adjustable differential pressure gauge, which solves the problems that the current differential pressure gauges are prone to inaccuracy, inconvenient repair and installation operations, and easy to be scrapped. It fundamentally solves the problems of the need to disassemble and inspect during use, the inconvenience of adding water, the difficulty in adjusting the scale, and the shortened lifespan.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adjustable differential pressure gauge, comprising a mounting seat, a central limit island is fixedly installed on the top of the mounting seat, and a U-shaped differential pressure gauge is clamped on the outside of the central limit island, the top of the central limit island is threadedly connected to two limit knobs, the top of the central limit island is clamped with a scale through the limit knob, an adjusting gear is movably installed on the top of the central limit island, an auxiliary adjusting rack that cooperates with the adjusting gear is fixedly installed inside the scale, an end clamp is fixedly installed on one end of the mounting seat, an adjusting screw is movably installed inside the mounting seat, and the outer side of the adjusting screw is threadedly connected to two side clamps, a water inlet connecting valve and a drain connecting valve are arranged on the side of the U-shaped differential pressure gauge, and the end of the U-shaped differential pressure gauge away from the end clamp is provided with two-side working connecting valves.

[0007] Preferably, the top of the ruler is provided with evenly distributed scale lines, and the top of the ruler is provided with a positioning groove that cooperates with a limit knob, an adjustment gear, and an auxiliary adjustment rack.

[0008] Preferably, the auxiliary adjustment rack is fixedly mounted on the side of the middle positioning groove, the auxiliary adjustment rack is at the same height as the adjustment gear, and the outer edge of the adjustment gear is meshed with the auxiliary adjustment rack.

[0009] Preferably, the two limit knobs are mirror-distributed on both sides of the adjusting gear, and the outer movable sleeve of the limit knob is provided with a limit bearing that cooperates with the scale.

[0010] Preferably, a mounting groove that cooperates with the adjusting screw is provided at the bottom of the mounting seat, a center block is movably installed in the middle of the adjusting screw, and the center block is fixedly connected to the mounting seat, and threads that cooperate with the two side clamps and are counter-rotating to each other are provided on the front and rear sides of the outside of the adjusting screw.

[0011] Preferably, the two side clamps are distributed in a mirror-image manner on the front and rear sides of the adjusting screw, and a guide rod is fixedly mounted on the inner side of the side clamp, and the guide rod is movably connected to the mounting seat.

[0012] Preferably, the water inlet connecting valve and the drain connecting valve are respectively located on the left and right sides of the side of the U-shaped differential pressure gauge, and the water inlet connecting valve and the drain connecting valve are both threadedly connected to the U-shaped differential pressure gauge.

[0013] The present invention provides an adjustable differential pressure gauge, which has the following beneficial effects:

[0014] 1. The adjustable differential pressure gauge can drive the scale to move inside the U-shaped differential pressure gauge by rotating the adjustment gear and rotating the auxiliary adjustment rack. The relative position of the scale and the U-shaped differential pressure gauge can be adjusted according to the actual situation on site, and the water zero position in the U-shaped differential pressure gauge can be accurately located, thereby increasing the adjustability of the U-shaped differential pressure gauge, facilitating reading, and improving the accuracy of detection. At the same time, when the scale moves, the scale is limited by two limit knobs, which improves the stability of the scale when moving.

[0015] 2. The adjustable differential pressure gauge can add or reduce the amount of water inside the U-shaped differential pressure gauge by arranging a water inlet connection valve and a drain connection valve on the outside of the U-shaped differential pressure gauge, thereby ensuring the rationality of the water amount inside the U-shaped differential pressure gauge. At the same time, the water inlet connection valve and the drain connection valve are installed on the side of the U-shaped differential pressure gauge, and the water inlet connection valve and the drain connection valve can be directly opened to adjust the water amount, thereby reducing the difficulty of operation.

[0016] 3. The adjustable differential pressure gauge drives the two external side clamps to move outward at the same time by rotating the adjusting screw, thereby releasing the restriction on the U-shaped differential pressure gauge, facilitating the disassembly and maintenance of the U-shaped differential pressure gauge, and preventing the U-shaped differential pressure gauge from being damaged during disassembly. At the same time, the U-shaped differential pressure gauge is restricted by the cooperation of the central limit island, the end clamps and multiple groups of side clamps, thereby ensuring the stability of the U-shaped differential pressure gauge after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure after the overall combination of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the top of the central limiting island of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the bottom of the mounting base of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the outer portion of the adjusting screw of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the scale of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the limit knob of the present invention.

[0023] In the figure: 1. Mounting seat; 2. U-shaped differential pressure gauge; 3. Central limit island; 4. Ruler; 5. Scale line; 6. Limit knob; 7. Adjustment gear; 8. Auxiliary adjustment rack; 9. End clamp; 10. Side clamp; 11. Adjustment screw; 12. Center block; 13. Limit bearing; 14. Working connection valve; 15. Water inlet connection valve; 16. Drain connection valve; 17. Positioning groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1 The present invention provides a technical solution: an adjustable differential pressure gauge comprises a mounting seat 1, a central limit island 3 is fixedly mounted on the top of the mounting seat 1, and a U-shaped differential pressure gauge 2 is clamped on the outside of the central limit island 3, two limit knobs 6 are threadedly connected to the top of the central limit island 3, a scale 4 is clamped on the top of the central limit island 3 through the limit knob 6, an adjusting gear 7 is movably mounted on the top of the central limit island 3, an auxiliary adjusting rack 8 that cooperates with the adjusting gear 7 is fixedly mounted inside the scale 4, an end clamping plate 9 is fixedly mounted on one end of the mounting seat 1, an adjusting screw 11 is movably mounted inside the mounting seat 1, and two side clamping plates 10 are threadedly connected on the outside of the adjusting screw 11, a water inlet connection valve 15 and a water discharge connection valve 16 are arranged on the side of the U-shaped differential pressure gauge 2, and the U-shaped differential pressure gauge 2 is away from the end clamping plate 9 One end of the U-shaped differential pressure gauge 2 is provided with working connecting valves 14 on both sides, and the water inlet connecting valve 15 and the drainage connecting valve 16 are respectively located on the left and right sides of the side of the U-shaped differential pressure gauge 2. The water inlet connecting valve 15 and the drainage connecting valve 16 are both threadedly connected to the U-shaped differential pressure gauge 2. By arranging the water inlet connecting valve 15 and the drainage connecting valve 16 on the outside of the U-shaped differential pressure gauge 2, the water volume inside the U-shaped differential pressure gauge 2 can be added or reduced through the water inlet connecting valve 15 and the drainage connecting valve 16 to ensure the rationality of the water volume inside the U-shaped differential pressure gauge 2. At the same time, the water inlet connecting valve 15 and the drainage connecting valve 16 are added to the side of the U-shaped differential pressure gauge 2, and the water inlet connecting valve 15 and the drainage connecting valve 16 can be directly opened to adjust the water volume, which reduces the difficulty of operation. The water inlet connecting valve 15 and the drainage connecting valve 16 are connected to the U-shaped differential pressure gauge 2 with threads, which is convenient for installation and disassembly.

[0026] See also Figure 2 and 5The top of the ruler 4 is provided with evenly distributed scale lines 5, and the top of the ruler 4 is provided with a positioning groove 17 that cooperates with the limit knob 6, the adjustment gear 7, and the auxiliary adjustment rack 8. By opening the positioning groove 17 at the top of the ruler 4, when the ruler 4 is installed, the ruler 4 is clamped on the outside of the limit knob 6 through the positioning groove 17, and the ruler 4 is restricted by the limit knob 6, which ensures the stability of the ruler 4 when it moves and prevents the ruler 4 from falling off. At the same time, the installation position of the auxiliary adjustment rack 8 is reserved to ensure that the auxiliary adjustment rack 8 and the adjustment gear 7 can be stable. The auxiliary adjustment rack 8 is fixedly mounted on the side of the middle positioning groove 17, the auxiliary adjustment rack 8 is at the same height as the adjustment gear 7, the outer edge of the adjustment gear 7 is meshed with the auxiliary adjustment rack 8, and the auxiliary adjustment rack 8 and the scale 4 can be driven to move by rotating the adjustment gear 7 and transmitting through the auxiliary adjustment rack 8. The relative position of the scale 4 and the U-shaped differential pressure gauge 2 can be adjusted according to the actual situation on site, and the water zero position in the U-shaped differential pressure gauge 2 can be accurately located, thereby increasing the adjustability of the U-shaped differential pressure gauge 2, facilitating reading, and improving the detection accuracy.

[0027] See also Figure 6 The two limit knobs 6 are mirror-distributed on both sides of the adjusting gear 7. The outer movable sleeve of the limit knob 6 is provided with a limit bearing 13 that cooperates with the scale 4. By installing the limit bearing 13 on the outside of the limit knob 6, it is ensured that the limit knob 6 can limit the position of the scale 4 while reducing the friction between the limit knob 6 and the scale 4, reducing the probability of damage to the scale 4 and improving the service life of the scale 4.

[0028] See also Figure 3 The bottom of the mounting seat 1 is provided with a mounting groove that cooperates with the adjusting screw 11. A center block 12 is movably installed in the middle of the adjusting screw 11, and the center block 12 is fixedly connected to the mounting seat 1. The position of the adjusting screw 11 is limited by the center block 12 to ensure that the adjusting screw 11 can rotate stably, thereby reducing the probability of failure of the device after use. The front and rear sides of the outside of the adjusting screw 11 are provided with threads that cooperate with the two side clamps 10 and are counter-rotating to each other, ensuring that when the adjusting screw 11 is rotated, the two side clamps 10 can be driven to move inward or outward at the same time, thereby realizing the clamping or loosening of the U-shaped differential pressure gauge 2 through the side clamps 10, which is convenient for disassembly of the U-shaped differential pressure gauge 2.

[0029] See also Figure 4The two side clamps 10 are mirror-imaged on the front and rear sides of the adjusting screw 11. A guide rod is fixedly installed on the inner side of the side clamp 10, and the guide rod is movably connected to the mounting seat 1. When the adjusting screw 11 rotates to drive the side clamp 10 to move, the moving direction of the side clamp 10 is limited by the guide rod, which improves the stability of the side clamp 10 when moving, and at the same time ensures that the U-shaped differential pressure gauge 2 can be stably clamped by the side clamp 10.

[0030] In summary, when the adjustable differential pressure gauge is used, the device is assembled according to the diagram, and the device is installed as a whole in the working position through the mounting seat 1, and the adjusting gear 7 is rotated to rotate and cooperate with the auxiliary adjusting rack 8 to drive the scale 4 to move inside the U-shaped differential pressure gauge 2. At the same time, when the scale 4 moves, the moving direction of the scale 4 is limited by two sets of limit knobs 6, and the relative position of the scale 4 and the U-shaped differential pressure gauge 2 is adjusted, so as to accurately locate the water zero position in the U-shaped differential pressure gauge 2, and the two working connecting valves 14 at one end of the U-shaped differential pressure gauge 2 are connected to the measured equipment, so that measurement can be carried out. When the U-shaped differential pressure gauge 2 is inside When there is a lot of water, open the drain connection valve 16 to drain the excess water out of the U-shaped differential pressure gauge 2. When the amount of water inside the U-shaped differential pressure gauge 2 is less, open the water inlet connection valve 15 to add water into the U-shaped differential pressure gauge 2. The water amount inside the U-shaped differential pressure gauge 2 can be freely adjusted by the water inlet connection valve 15 and the drain connection valve 16 to ensure the rationality of the water amount inside the U-shaped differential pressure gauge 2. When it is necessary to disassemble and overhaul the U-shaped differential pressure gauge 2, rotate the adjusting screw 11 to drive the two external side clamps 10 to move outward at the same time to release the restriction on the U-shaped differential pressure gauge 2, and take out the U-shaped differential pressure gauge 2 along the top of the mounting seat 1 for overhaul.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable differential pressure gauge, comprising a mounting seat (1), characterized in that: A central limit island (3) is fixedly mounted on the top of the mounting seat (1), and a U-shaped differential pressure gauge (2) is clamped on the outside of the central limit island (3); two limit knobs (6) are threadedly connected to the top of the central limit island (3); a scale (4) is clamped on the top of the central limit island (3) via the limit knob (6); an adjustment gear (7) is movably mounted on the top of the central limit island (3); an auxiliary adjustment rack (8) that cooperates with the adjustment gear (7) is fixedly mounted inside the scale (4); an end clamp (9) is fixedly mounted on one end of the mounting seat (1); an adjustment screw (11) is movably mounted inside the mounting seat (1), and two side clamps (10) are threadedly connected on the outside of the adjustment screw (11); a water inlet connection valve (15) and a water discharge connection valve (16) are arranged on the side of the U-shaped differential pressure gauge (2); and a side working connection valve (14) is arranged on the end of the U-shaped differential pressure gauge (2) away from the end clamp (9); The top of the ruler (4) is provided with evenly distributed scale lines (5), and the top of the ruler (4) is provided with a positioning groove (17) that cooperates with the limit knob (6), the adjustment gear (7), and the auxiliary adjustment rack (8); The auxiliary adjustment rack (8) is fixedly mounted on the side of the middle positioning groove (17), the auxiliary adjustment rack (8) and the adjustment gear (7) are at the same height, and the outer edge of the adjustment gear (7) and the auxiliary adjustment rack (8) are meshed with each other; The bottom of the mounting seat (1) is provided with a mounting groove which cooperates with the adjusting screw (11); a center block (12) is movably installed in the middle of the adjusting screw (11), and the center block (12) is fixedly connected to the mounting seat (1); the front and rear sides of the outside of the adjusting screw (11) are provided with threads which cooperate with the two side clamping plates (10) and are counter-rotating to each other; The water inlet connection valve (15) and the water discharge connection valve (16) are respectively located on the left and right sides of the side of the U-shaped differential pressure gauge (2), and the water inlet connection valve (15) and the water discharge connection valve (16) are both threadedly connected to the U-shaped differential pressure gauge (2).

2. The adjustable differential pressure gauge according to claim 1, characterized in that: The two limit knobs (6) are mirror-imaged and distributed on both sides of the adjusting gear (7), and the outer movable sleeve of the limit knob (6) is provided with a limit bearing (13) that cooperates with the scale (4).

3. The adjustable differential pressure gauge according to claim 1, characterized in that: The two side clamps (10) are distributed in a mirror-like manner on the front and rear sides of the adjusting screw (11), and a guide rod is fixedly mounted on the inner side of the side clamp (10), and the guide rod is movably connected to the mounting seat (1).

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