No-wave mechanical mud scale

Abstract

The present application relates to the technical field of mud tank liquid level scales, and is a non-fluctuating mechanical mud scale, which includes a scale seat box, a base frame, a buoy rod, a float, a scale seat, a guide rod, a rod guide device, and a liquid level pointer. The inside of the scale seat box has a scale seat cavity capable of accommodating a float, and the lower end of the scale seat box is equipped with a base frame capable of being fixed on the mouth of the mud tank, and the middle part of the upper end of the scale seat box is provided with a rod sleeve and a buoy rod. The present application has a reasonable and compact structure and is easy to use. The buoy rod is installed through the rod sleeve, and the buoy rod is supported and guided by a guide rod parallel to the scale seat. The upper end of the buoy rod slides vertically smoothly along the scale seat and the guide rod through the rod guide device, which can effectively prevent the buoy rod from interfering with the floating ball due to the stirring of the mud, effectively improve the measurement accuracy of the mud scale, and significantly reduce the reading time of the detection personnel. The structure is simple and compact, easy to use, and has the characteristics of safety, reliability, simplicity, and efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of mud tank liquid level gauges, and is a non-fluctuation mechanical mud gauge. Background Art

[0002] When drilling and repairing wells in oil fields, if there is gas in the oil layer, it will cause great danger to the operators. Ground staff generally judge the downhole situation by observing the volume change of the drilling mud in the mud tank of the solid control system. Drilling mud is a suspension prepared by a certain proportion of water, clay and various additives. It is used for well washing, wall protection and drill bit cooling during drilling. At present, mud scales and other detection devices are generally installed on the mud tank to monitor the situation of the oil and gas layer downhole by monitoring the mud liquid level. The existing mud scales are generally float-type mud scales, which usually include measuring rulers, floats, float rods, pointers and other components. When the mud is stirred, the float will cause longitudinal and lateral interference to the float, causing the scale reading to fluctuate. Not only is the measurement accuracy low, but it also causes the detection personnel to take a long time to read the reading. However, when a blowout occurs, the monitoring personnel need to quickly read the cubic number of mud in the mud tank to determine the subsequent countermeasures. Therefore, the time delay generated when reading the mud scale will cause a large safety hazard and seriously affect the safety of oilfield production operations. Summary of the invention

[0003] The purpose of the present application is to provide a non-fluctuating mechanical mud scale, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of the existing float-type mud scale, such as mud stirring easily causing scale indication fluctuation, low measurement accuracy, long reading time and potential safety hazards.

[0004] The purpose of the present application is achieved in this way: a non-oscillation mechanical mud scale, including a scale seat box, a base frame, a buoy rod, a float, a scale seat, a guide rod, a scale rod guide device and a liquid level pointer, the inside of the scale seat box is provided with a scale seat cavity capable of accommodating a float, the lower end of the scale seat box is provided with a base frame capable of being fixed to the mouth of a mud tank, a scale rod sleeve is provided in the middle of the upper end of the scale seat box and a buoy rod is installed, the lower end of the buoy rod is located in the scale seat cavity and a float is installed, the upper part of the buoy rod is sleeved in the benchmark sleeve and can move up and down, a scale seat with a scale is provided at the upper end of the scale seat box on the left side of the benchmark sleeve, and the right side of the scale seat is provided with a scale plate. There is a ruler seat groove along the vertical direction in the middle part of the side, and a guide rod is provided at the upper end of the ruler seat box on the right side of the benchmark sleeve. A top seat plate is fixed to the upper end of the ruler seat, and the upper end of the guide rod is fixed on the top seat plate and keeps parallel with the ruler seat. A benchmark guide device is fixedly installed on the upper end of the float rod, and the left part of the benchmark guide device can sit on the inner wall of the ruler seat groove and slide up and down along it, and the right part of the benchmark guide device can sit on the outer surface of the guide rod and slide up and down along it, and a liquid level pointer is fixedly installed at the front end of the benchmark guide device, which extends to the scale of the ruler and can move up and down with the float rod.

[0005] Furthermore, a front groove of the ruler seat is provided in the middle of the front side of the ruler seat in the vertical direction, and the ruler is fixedly installed in the front groove of the ruler seat by means of locking screws; or, the ruler seat is an aluminum alloy profile with a concave cross-section, and vertical slots with I-shaped cross-sections are respectively provided on the front side, rear side and left side of the ruler seat, the cross-section of the ruler is I-shaped, and centimeter scale marks are engraved or printed on the front side of the ruler, and the ruler is fixedly installed in the vertical groove of the front side of the ruler seat by means of locking screws, and a volume direct-reading ruler with an I-shaped cross-section is installed in the vertical groove on the left side of the ruler seat, and volume scale marks are engraved or written on the left side of the volume direct-reading ruler, and the volume scale marks can indicate the liquid level in the mud tank at different cubic numbers, and the end of the liquid level pointer extends to the volume scale of the volume direct-reading ruler and can move up and down with the float rod.

[0006] Furthermore, the benchmark guiding device includes a front pressure plate, a rear pressure plate, a left guide slider, and a right guide slider. The front pressure plate is respectively provided with front plate fixing holes in the upper and middle parts, and the rear pressure plate is respectively provided with rear plate fixing holes at positions corresponding to the front plate fixing holes. The buoy rod is an aluminum alloy tube body with a circular cross-section, and positions of the buoy rod corresponding to the front plate fixing holes are respectively provided with benchmark pressure plate holes. The front pressure plate is fixed to the front end of the upper part of the buoy rod through the front plate fixing holes, the benchmark pressure plate holes, the pressure plate stud screws and the ball nut. The rear pressure plate is fixed to the rear end of the pressure plate stud screws through the rear plate fixing holes and the ball nut and is pressed against the rear end of the upper part of the buoy rod. The left part of the front and rear pressure plates is fixedly installed with a left guide slider capable of sliding up and down along the groove of the ruler seat, and the right part of the front and rear pressure plates is fixedly installed with a right guide slider capable of sliding up and down along the guide rod.

[0007] Furthermore, the liquid level pointer is installed on the benchmark guide device through a pointer frame. The pointer frame is in an inverted Z shape. The lower part of the pointer frame is arranged in the vertical direction and is provided with no less than two groups of oblong mounting holes. The lower part of the pointer frame is fixed to the left front part of the front pressure plate through oblong mounting holes, studs or screws and can adjust the up and down positions. The upper part of the pointer frame has a horizontal folding section extending horizontally forward. The pointer frame above the horizontal folding section is arranged in the vertical direction and fixed with the liquid level pointer.

[0008] Furthermore, left guide block mounting holes are respectively provided in the upper and lower parts of the left guide slider, front plate left fixing holes are respectively provided at the upper and lower left parts of the front pressure plate corresponding to the left guide block mounting holes, and rear plate left fixing holes are respectively provided at the positions corresponding to the left guide block mounting holes on the rear pressure plate, and the left guide slider is fixed between the left part of the front pressure plate and the left part of the rear pressure plate by the left guide block double-headed screw and the ball nut; the left part of the left guide slider is rectangular and can slide up and down along the inner wall of the ruler seat groove, and the middle part of the right side of the left guide slider is provided with a left guide block vertical groove that can cooperate with the left part of the buoy rod, and the horizontal section of the left guide block vertical groove is an isosceles trapezoid with a small left and a large right. The left guide slider is pressed against the left part of the buoy rod through the left guide block vertical groove.

[0009] Furthermore, a right guide block mounting hole is provided in the middle portion of the right guide slider, a front plate right fixing hole is provided at the position corresponding to each right guide block mounting hole on the right portion of the front pressure plate, and a rear plate right fixing hole is provided at the position corresponding to the right guide block mounting hole on the rear pressure plate. The right guide slider is fixed between the right portion of the front pressure plate and the right portion of the rear pressure plate through a right guide block double-headed screw and a ball nut; a right guide block vertical groove is provided in the middle portion of the right side of the right guide slider, which can cooperate with the left portion of the guide rod, and the horizontal cross-section of the right guide block vertical groove is an isosceles trapezoid with a small left portion and a large right portion. The right guide slider can be pressed against the left portion of the guide rod and slide up and down through the right guide block vertical groove.

[0010] Furthermore, a lower seat plate is fixedly installed on the middle part of the upper end of the ruler seat box by screws, and no less than three rod sleeve fixing holes are evenly distributed on the upper end of the benchmark sleeve. The benchmark sleeve is fixedly installed on the lower seat plate through the rod sleeve fixing holes and screws. A benchmark through hole is provided on the lower seat plate corresponding to the lower end of the inner cavity of the benchmark sleeve, and the middle part of the buoy rod is sleeved in the benchmark through hole. A ruler seat lower sleeve is fixed on the upper end of the lower seat plate on the left side of the benchmark sleeve, and the lower end of the ruler seat is fixed in the lower sleeve of the ruler seat, and a guide rod lower sleeve is fixed on the upper end of the lower seat plate on the right side of the benchmark sleeve, and the lower end of the guide rod is fixed in the lower sleeve of the guide rod; a ruler seat upper sleeve is provided on the left part of the lower end of the top seat plate corresponding to the position of the ruler seat lower sleeve, and the upper end of the ruler seat is fixed in the upper sleeve of the ruler seat, and an guide rod upper sleeve is provided on the right part of the lower end of the top seat plate corresponding to the position of the guide rod lower sleeve, and the upper end of the guide rod is fixed in the upper sleeve of the guide rod.

[0011] Furthermore, a benchmark connecting hole is provided at the lower part of the buoy rod, and benchmark mounting plates are respectively fixed on the front and rear sides of the upper part of the float, and the positions of the front and rear benchmark mounting plates corresponding to the benchmark connecting holes are respectively provided with a front benchmark mounting hole and a rear benchmark mounting hole, and the buoy rod is hinged to the float through the front benchmark mounting hole, the benchmark connecting hole, the rear benchmark mounting hole and the connecting pin; a left limit pin is installed between the front and rear benchmark mounting plates on the left side of the lower part corresponding to the benchmark connecting hole, and a right limit pin is installed between the front and rear benchmark mounting plates on the right side of the lower part corresponding to the benchmark connecting hole.

[0012] Furthermore, the ruler seat box is a five-sided box body with an opening facing downward, and ruler seat ear plates are respectively provided on the lower left and right sides of the front plate and the lower left and right sides of the rear plate of the ruler seat box, and seat frame ear seats are respectively fixed on the side surfaces of the base frame corresponding to the positions of each ruler seat ear plate, and the ruler seat box and the base frame are fixed together by the ruler seat ear plates, the seat frame ear seats and bolts.

[0013] The present application has a reasonable and compact structure and is easy to use. The buoy rod is installed by means of a benchmark sleeve, and the buoy rod is supported and guided by a guide rod parallel to the scale seat. The upper end of the buoy rod can slide vertically smoothly along the scale seat and the guide rod through the benchmark guide device, which can effectively prevent the buoy rod from causing interference fluctuations to the float ball due to the stirring of the mud, effectively improves the measurement accuracy of the mud scale, and significantly reduces the reading time of the inspectors. The present application has a simple and compact structure, is easy to use, and is safe, reliable, simple, and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific structure of this application is given by the following drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the main structure of the best embodiment of the present application;

[0016] Figure 2 Yes Figure 1 Schematic diagram of the enlarged cross-sectional structure at AA in the middle.

[0017] Legend: 1. Ruler box, 2. Base frame, 3. Float rod, 4. Ruler seat, 5. Guide rod, 6. Liquid level pointer, 7. Float, 8. Ruler seat cavity, 9. Rod sleeve, 10. Scale, 11. Ruler seat groove, 12. Top seat plate, 13. Locking screw, 14. Volume direct reading ruler, 15. Front pressure plate, 16. Rear pressure plate, 17. Left guide slider, 18. Right guide slider, 19. Pressure plate double-headed screw, 20. Pointer frame, 21. Left Guide block mounting hole, 22, left guide block double-headed screw, 23, left guide block vertical slot, 24, right guide block mounting hole, 25, right guide block double-headed screw, 26, right guide block vertical slot, 27, lower seat plate, 28, rod sleeve fixing hole, 29, ruler seat lower sleeve, 30, guide rod lower sleeve, 31, ruler seat upper sleeve, 32, guide rod upper sleeve, 33, benchmark rod connecting hole, 34, left limit pin, 35, right limit pin, 36, ruler seat ear plate, 37, seat frame ear seat. DETAILED DESCRIPTION

[0018] The present application is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of the present application and actual conditions.

[0019] Example: Figure 1As shown in FIG. 2 , the non-oscillation mechanical mud scale comprises a scale box 1, a base frame 2, a buoy rod 3, a float 7, a scale seat 4, a guide rod 5, a rod guide device and a liquid level pointer 6. The interior of the scale box 1 is provided with a scale cavity 8 capable of accommodating the float 7. The lower end of the scale box 1 is provided with a base frame 2 capable of being fixed to the mouth of the mud tank. The middle part of the upper end of the scale box 1 is provided with a rod sleeve 9 and is provided with the buoy rod 3. The lower end of the buoy rod 3 is located in the scale cavity 8 and is provided with the float 7. The upper part of the buoy rod 3 is sleeved in the rod sleeve 9 and can move up and down. The upper end of the scale box 1 on the left side of the rod sleeve 9 is provided with a scale seat 4 with a scale 10. The middle part of the right side of the scale seat 4 is provided with a rod sleeve 9 and a buoy rod 3 is installed. There is a ruler seat groove 11 along the vertical direction, a guide rod 5 is provided at the upper end of the ruler seat box 1 on the right side of the benchmark sleeve 9, a top seat plate 12 is fixed to the upper end of the ruler seat 4, the upper end of the guide rod 5 is fixed to the top seat plate 12 and keeps parallel with the ruler seat 4, a benchmark guide device is fixedly installed on the upper end of the float rod 3, the left part of the benchmark guide device can sit on the inner wall of the ruler seat groove 11 and slide up and down along it, the right part of the benchmark guide device can sit on the outer surface of the guide rod 5 and slide up and down along it, and a liquid level pointer 6 is fixedly installed at the front end of the benchmark guide device, the liquid level pointer 6 extends to the scale of the scale 10 and can move up and down with the float rod 3. The float 7 is an existing well-known public technology, and it is best to use a hollow sphere made of stainless steel. The present application installs the buoy rod 3 through the benchmark sleeve 9, supports and guides the buoy rod 3 through the guide rod 5 parallel to the scale seat 4, and makes the upper end of the buoy rod 3 slide vertically smoothly along the scale seat 4 and the guide rod 5 through the benchmark guiding device, which can effectively prevent the buoy rod 3 from causing interference fluctuations to the float ball due to the stirring mud, effectively improves the measurement accuracy of the mud scale, and significantly reduces the reading time of the detection personnel. It has a simple and compact structure, is easy to use, and is safe, reliable, simple and efficient.

[0020] like Figure 1As shown in FIG. 2 , a front groove of the ruler seat is provided in the middle of the front side of the ruler seat 4 along the vertical direction, and the scale ruler 10 is fixedly installed in the front groove of the ruler seat by means of a locking screw 13; or, the ruler seat 4 is an aluminum alloy profile with a concave cross-section, and the front side, rear side and left side of the ruler seat 4 respectively have vertical grooves with an I-shaped cross-section, the cross-section of the scale ruler 10 is I-shaped, and centimeter scale marks are engraved or printed on the front side of the scale ruler 10, and the scale ruler 10 is fixedly installed in the vertical groove of the front side of the ruler seat 4 by means of a locking screw 13, and a volume direct-reading ruler 14 with an I-shaped cross-section is installed in the vertical groove on the left side of the ruler seat 4, and volume scale marks are engraved or written on the left side of the volume direct-reading ruler 14, and the volume scale marks can indicate the liquid level height of the liquid in the mud tank at different cubic numbers, and the end of the liquid level pointer 6 extends to the volume scale of the volume direct-reading ruler 14 and can move up and down with the float rod 3. The scale base 4 is made of commercially available aluminum alloy profiles that are known and used, and are easy to manufacture and process; the I-shaped vertical slot is convenient for the installation of the scale 10 and the volume direct-reading scale 14. By marking the liquid level height of the liquid in the mud tank at different cubic numbers on the volume direct-reading scale 14, the volume of the liquid can be directly read, saving the time spent on converting the volume. The user can quickly know the volume of the liquid in the mud tank by directly reading the volume scale corresponding to the position of the liquid level pointer 6, thereby improving the work efficiency of detecting the scale indication.

[0021] like Figure 1As shown in FIG. 2 , the benchmark guiding device includes a front pressure plate 15, a rear pressure plate 16, a left guide slider 17, and a right guide slider 18. The front pressure plate 15 is provided with front plate fixing holes in the upper and middle parts respectively, and the rear pressure plate 16 is provided with rear plate fixing holes at positions corresponding to the front plate fixing holes. The buoy rod 3 is an aluminum alloy tube body with a circular cross-section, and the upper part of the buoy rod 3 is provided with benchmark pressure plate holes at positions corresponding to the front plate fixing holes. The front pressure plate 15 is fixed to the front end of the upper part of the buoy rod 3 through the front plate fixing holes, the benchmark pressure plate holes, the pressure plate double-headed screws 19 and the ball nuts. The rear pressure plate 16 is fixed to the rear end of the pressure plate double-headed screws 19 through the rear plate fixing holes and the ball nuts and is pressed against the rear end of the upper part of the buoy rod 3. The left part of the front pressure plate 15 and the rear pressure plate 16 is fixedly installed with a left guide slider 17 that can slide up and down along the ruler seat groove 11, and the right part of the front pressure plate 15 and the rear pressure plate 16 is fixedly installed with a right guide slider 18 that can slide up and down along the guide rod 5. The left guide slider 17 and the right guide slider 18 are fixed by the front pressing plate 15 and the rear pressing plate 16. The structure is simple, the connection is firm, and the performance is reliable. The left guide slider 17 and the right guide slider 18 are easy to manufacture and assemble, and easy to repair and replace parts. The manufacturing cost and the maintenance cost are low. The left guide slider 17 and the right guide slider 18 can be made of engineering plastics such as polytetrafluoroethylene, polyacetal, polyoxymethylene, polycarbonate, polyamide, polysulfone, polyimide, chlorinated polyether, polyphenylene sulfide and polyester terephthalate. The engineering plastics have a low friction coefficient, good forming processability and chemical stability, and strong impact resistance. If these plastics are reinforced with ring glass fiber, metal fiber, graphite fiber, boron fiber, etc., their comprehensive performance is better.

[0022] like Figure 1 As shown in FIG. 2 , the liquid level pointer 6 is installed on the pole guide device through the pointer frame 20. The pointer frame 20 is in an inverted Z shape. The lower part of the pointer frame 20 is arranged along the vertical direction and is provided with at least two groups of oblong mounting holes. The lower part of the pointer frame 20 is fixed to the left front part of the front pressure plate 15 through the oblong mounting holes, studs or screws and can adjust the upper and lower positions. The upper part of the pointer frame 20 has a horizontal folding section extending horizontally forward. The pointer frame 20 above the horizontal folding section is arranged along the vertical direction and fixed with the liquid level pointer 6. The inverted Z-shaped pointer frame 20 has a simple structure, high strength, easy to manufacture, and good comprehensive performance.

[0023] like Figure 1As shown in FIG. 2 , the left guide block mounting holes 21 are respectively arranged at the upper and lower middle parts of the left guide slide block 17, the left upper and left lower parts of the front pressure plate 15 are respectively provided with front plate left fixing holes corresponding to the positions of the left guide block mounting holes 21, and the positions of the rear plate left fixing holes are respectively provided on the rear pressure plate 16 corresponding to the positions of the left guide block mounting holes 21. The left guide slide block 17 is fixed between the left part of the front pressure plate 15 and the left part of the rear pressure plate 16 by the left guide block double-headed screw 22 and the ball nut; the left part of the left guide slide block 17 is rectangular and can slide up and down along the inner wall of the ruler seat groove 11, and the middle part of the right side of the left guide slide block 17 is provided with a left guide block vertical groove 23 which can cooperate with the left part of the buoy rod 3, and the horizontal section of the left guide block vertical groove 23 is an isosceles trapezoid with a small left side and a large right side, and the left guide slide block 17 is pressed against the left part of the buoy rod 3 through the left guide block vertical groove 23. The left guide slider 17 is fixed by the left guide block double-headed screw 22 and the ball nut, which has a firm connection and is easy to disassemble. The left guide slider 17 is fixed to the buoy rod 3 by the left guide block vertical groove 23, which has a simple structure and a firm connection. The left guide block vertical groove 23 is an isosceles trapezoid, which is easy to manufacture. The ball nut can effectively prevent its flange from scratching the operator's body or other parts, and has better safety. At the same time, the left guide block double-headed screw 22 can also be used to fix the pointer frame 20 to further simplify the structure, reduce the assembled parts, and achieve better use effect.

[0024] like Figure 1 As shown in —2, a right guide block mounting hole 24 is provided in the middle part of the right guide slider 18, a front plate right fixing hole is provided at the right part of the front pressure plate 15 corresponding to the position of each right guide block mounting hole 24, and a rear plate right fixing hole is provided at the position of the rear pressure plate 16 corresponding to the right guide block mounting hole 24. The right guide slider 18 is fixed between the right part of the front pressure plate 15 and the right part of the rear pressure plate 16 through the right guide block double-headed screw 25 and the ball nut; a right guide block vertical groove 26 capable of cooperating with the left part of the guide rod 5 is provided in the middle part of the right side of the right guide slider 18, and the horizontal section of the right guide block vertical groove 26 is an isosceles trapezoid with a small left side and a large right side. The right guide slider 18 can be pressed against the left part of the guide rod 5 and slide up and down through the right guide block vertical groove 26. The right guide slider 18 is fixed by the right guide block double-headed screw 25 and the ball nut, which has a firm connection and is easy to disassemble. The right guide slider 18 sits on the guide rod 5 through the right guide block vertical groove 26, with a small contact surface, small friction resistance, and good support stability. The right guide block vertical groove 26 is an isosceles trapezoid, which is easy to manufacture. The ball nut can effectively prevent its flange from scratching the operator's body or other parts, and has better safety. During manufacturing, the inclination of the hypotenuse of the isosceles trapezoid can be adjusted so that the left side of the right guide block vertical groove 26 does not contact the guide rod 5, so as to further reduce the friction resistance and achieve better use effect.

[0025] like Figure 1As shown in FIG. 2, a lower seat plate 27 is fixedly installed at the middle part of the upper end of the ruler seat box 1 by screws, and at least three rod sleeve fixing holes 28 are evenly distributed on the upper end of the benchmark sleeve 9. The benchmark sleeve 9 is fixedly installed on the lower seat plate 27 through the rod sleeve fixing holes 28 and screws. A benchmark through hole is provided on the lower seat plate 27 corresponding to the lower end position of the inner cavity of the benchmark sleeve 9. The middle part of the buoy rod 3 is sleeved in the benchmark through hole. A ruler seat lower clamping sleeve 29 is fixed on the upper end of the lower seat plate 27 on the left side of the benchmark sleeve 9, and the lower end of the ruler seat 4 is fixed The lower end of the guide rod 5 is fixed in the lower sleeve 29 of the ruler seat, and the lower end of the lower seat plate 27 on the right side of the benchmark sleeve 9 is fixed with a guide rod lower sleeve 30, and the lower end of the guide rod 5 is fixed in the guide rod lower sleeve 30; the left part of the lower end of the top seat plate 12 is provided with a ruler seat upper sleeve 31 corresponding to the position of the ruler seat lower sleeve 29, the upper end of the ruler seat 4 is fixed in the ruler seat upper sleeve 31, the right part of the lower end of the top seat plate 12 is provided with a guide rod upper sleeve 32 corresponding to the position of the guide rod lower sleeve 30, and the upper end of the guide rod 5 is fixed in the guide rod upper sleeve 32. During actual manufacturing, the lower ferrule 29 of the ruler seat, the lower ferrule 30 of the guide rod and the lower seat plate 27 can be made into an integrated body, and the upper ferrule 31 of the ruler seat, the upper ferrule 32 of the guide rod and the top seat plate 12 can be made into an integrated body. The ruler seat 4 and the guide rod 5 are fixed by the lower seat plate 27 and the top seat plate 12, which can not only simplify the number of parts and facilitate assembly and manufacturing, so that the present application has better integration and higher connection strength, but also can further ensure the assembly accuracy of the ruler seat 4 and the guide rod 5, and have better comprehensive performance.

[0026] like Figure 1 As shown in FIG. 2, the lower part of the buoy rod 3 has a pole connection hole 33, and pole mounting plates are fixed to the front and rear sides of the upper part of the float 7, respectively. The positions of the front and rear pole mounting plates corresponding to the pole connection hole 33 respectively have a pole front mounting hole and a pole rear mounting hole, and the buoy rod 3 is hinged to the float 7 through the pole front mounting hole, the pole connection hole 33, the pole rear mounting hole and the connecting pin; a left limit pin 34 is installed between the front and rear pole mounting plates corresponding to the left of the lower part of the pole connection hole 33, and a right limit pin 35 is installed between the front and rear pole mounting plates corresponding to the right of the lower part of the pole connection hole 33. By limiting the left limit pin 34 and the right limit pin 35, the lower part of the buoy rod 3 can be offset by a certain angle relative to the float 7 to prevent the buoy rod 3 from getting stuck.

[0027] like Figure 1 As shown in FIG. 2 , the ruler seat box 1 is a five-sided box body with an opening facing downward. The ruler seat ear plates 36 are respectively provided at the lower left and right sides of the front plate and the lower left and right sides of the rear plate of the ruler seat box 1. The side surfaces of the base frame 2 corresponding to the positions of the ruler seat ear plates 36 are respectively fixed with seat frame ear seats 37. The ruler seat box 1 and the base frame 2 are fixed together by the ruler seat ear plates 36, the seat frame ear seats 37 and bolts. The ruler seat box 1 and the base frame 2 are connected by the ruler seat ear plates 36, the seat frame ear seats 37 and bolts, which is not only simple in structure and convenient for manufacturing and maintenance, but also simple and quick in assembly and easy for assemblers to operate.

[0028] The above description is only an example for clearly explaining the present application, and is not intended to limit the implementation methods of the present application. Any obvious changes or modifications derived from the technical solution of the present application are still within the scope of protection of the present application.

Claims

1. A non-oscillation mechanical mud scale, characterized in that: It includes a ruler seat box, a base frame, a buoy rod, a float, a ruler seat, a guide rod, a rod guide device and a liquid level pointer. The ruler seat box has a ruler seat cavity that can accommodate the float. The lower end of the ruler seat box is equipped with a base frame that can be fixed on the mouth of the mud tank. The middle part of the upper end of the ruler seat box is provided with a rod sleeve and a buoy rod is installed. The lower end of the buoy rod is located in the ruler seat cavity and is equipped with a float. The upper part of the buoy rod is sleeved in the rod sleeve and can move up and down. The upper end of the ruler seat box on the left side of the rod sleeve is provided with a ruler seat with a scale, and the middle part of the right side of the ruler seat has a ruler seat recess along the vertical direction. The upper end of the ruler seat box on the right side of the benchmark sleeve is provided with a guide rod, the upper end of the ruler seat is fixed with a top seat plate, the upper end of the guide rod is fixed on the top seat plate and kept parallel with the ruler seat, the upper end of the buoy rod is fixed with a benchmark guide device, the left part of the benchmark guide device can be seated on the inner wall of the ruler seat groove and slide up and down along it, the right part of the benchmark guide device can be seated on the outer surface of the guide rod and slide up and down along it, and the front end of the benchmark guide device is fixed with a liquid level pointer, which extends to the scale of the scale and can move up and down with the buoy rod; The benchmark guiding device includes a front pressure plate, a rear pressure plate, a left guide slider and a right guide slider. The front pressure plate is provided with front plate fixing holes in the upper and middle parts respectively. The rear pressure plate is provided with rear plate fixing holes at positions corresponding to the front plate fixing holes. The buoy rod is an aluminum alloy tube body with a circular cross-section. Positions of the upper part of the buoy rod corresponding to the front plate fixing holes are provided with benchmark pressure plate holes. The front pressure plate is fixed to the front end of the upper part of the buoy rod through the front plate fixing holes, the benchmark pressure plate holes, the pressure plate double-headed screws and the ball nuts. The rear pressure plate is fixed to the rear end of the pressure plate double-headed screws and pressed against the rear end of the upper part of the buoy rod through the rear plate fixing holes and the ball nuts. The left part of the front and rear pressure plates is fixedly installed with a left guide slider capable of sliding up and down along the groove of the ruler seat. The right part of the front and rear pressure plates is fixedly installed with a right guide slider capable of sliding up and down along the guide rod. The left part of the left guide slider is rectangular and can slide up and down along the inner wall of the ruler seat groove. The middle part of the right side of the left guide slider is provided with a left guide block vertical groove that can match the left part of the buoy rod. The horizontal section of the left guide block vertical groove is an isosceles trapezoid with a small left side and a large right side. The left guide slider is pressed against the left part of the buoy rod through the left guide block vertical groove. A right guide block vertical groove is provided in the middle of the right side of the right guide slider, which can cooperate with the left part of the guide rod. The horizontal section of the right guide block vertical groove is an isosceles trapezoid with a small left side and a large right side. The right guide slider can be pressed against the left part of the guide rod and slide up and down through the right guide block vertical groove.

2. The non-oscillation mechanical mud scale according to claim 1, characterized in that: A front groove of the ruler seat is provided in the middle of the front side of the ruler seat in the vertical direction, and the scale is fixedly installed in the front groove of the ruler seat by means of locking screws; or, the ruler seat is an aluminum alloy profile with a concave cross-section, and vertical grooves with I-shaped cross-sections are respectively provided on the front side, rear side and left side of the ruler seat, the cross-section of the scale is I-shaped, and centimeter scale marks are engraved or printed on the front side of the scale, and the scale is fixedly installed in the vertical groove of the front side of the ruler seat by means of locking screws, and a volume direct-reading ruler with an I-shaped cross-section is installed in the vertical groove on the left side of the ruler seat, and volume scale marks are engraved or written on the left side of the volume direct-reading ruler, and the volume scale marks can indicate the liquid level in the mud tank at different cubic numbers, and the end of the liquid level pointer extends to the volume scale of the volume direct-reading ruler and can move up and down with the float rod.

3. The non-oscillation mechanical mud scale according to claim 1, characterized in that: The liquid level pointer is installed on the benchmark guide device through a pointer frame. The pointer frame is in an inverted Z shape. The lower part of the pointer frame is arranged in the vertical direction and is provided with no less than two groups of oblong mounting holes. The lower part of the pointer frame is fixed to the left front part of the front pressure plate through oblong mounting holes, studs or screws and can adjust the up and down positions. The upper part of the pointer frame has a horizontal folding section extending horizontally forward. The pointer frame above the horizontal folding section is arranged in the vertical direction and fixed with a liquid level pointer.

4. The non-oscillation mechanical mud scale according to claim 1, characterized in that: Left guide block mounting holes are respectively provided in the upper and lower middle parts of the left guide slider, front plate left fixing holes are respectively provided in the upper left and lower left parts of the front pressure plate corresponding to the left guide block mounting holes, and rear plate left fixing holes are respectively provided in the positions corresponding to the left guide block mounting holes on the rear pressure plate, and the left guide slider is fixed between the left part of the front pressure plate and the left part of the rear pressure plate by the left guide block stud screw and the ball nut.

5. The non-oscillation mechanical mud scale according to claim 1, characterized in that: A right guide block mounting hole is provided in the middle of the right guide slider, a front plate right fixing hole is provided at the right part of the front pressure plate corresponding to the right guide block mounting holes, and a rear plate right fixing hole is provided at the position corresponding to the right guide block mounting hole on the rear pressure plate. The right guide slider is fixed between the right part of the front pressure plate and the right part of the rear pressure plate by the right guide block double-headed screw and the ball nut.

6. The non-oscillation mechanical mud scale according to claim 1, 2, 3, 4 or 5, characterized in that: A lower seat plate is fixedly installed on the middle part of the upper end of the ruler seat box by screws, and there are no less than three rod sleeve fixing holes evenly distributed on the upper end of the benchmark sleeve. The benchmark sleeve is fixedly installed on the lower seat plate by the rod sleeve fixing holes and screws. A benchmark through hole is provided on the lower seat plate corresponding to the lower end of the inner cavity of the benchmark sleeve, and the middle part of the buoy rod is sleeved in the benchmark through hole. A ruler seat lower sleeve is fixed on the upper end of the lower seat plate on the left side of the benchmark sleeve, and the lower end of the ruler seat is fixed in the lower sleeve of the ruler seat, and a guide rod lower sleeve is fixed on the upper end of the lower seat plate on the right side of the benchmark sleeve, and the lower end of the guide rod is fixed in the lower sleeve of the guide rod; an upper ruler seat sleeve is provided on the left part of the lower end of the top seat plate corresponding to the position of the lower ruler seat sleeve, and the upper end of the ruler seat is fixed in the upper sleeve of the ruler seat, and an upper guide rod sleeve is provided on the right part of the lower end of the top seat plate corresponding to the position of the lower guide rod sleeve, and the upper end of the guide rod is fixed in the upper sleeve of the guide rod.

7. The non-oscillation mechanical mud scale according to claim 1, 2, 3, 4 or 5, characterized in that: A benchmark connecting hole is provided at the lower part of the buoy rod, and benchmark mounting plates are respectively fixed on the front and rear sides of the upper part of the float, and the positions corresponding to the benchmark connecting holes on the front and rear benchmark mounting plates are respectively provided with a benchmark front mounting hole and a benchmark rear mounting hole, and the buoy rod is hinged on the float through the benchmark front mounting hole, the benchmark connecting hole, the benchmark rear mounting hole and the connecting pin, and a left limit pin is installed between the front and rear benchmark mounting plates on the left side of the lower part of the corresponding benchmark connecting hole, and a right limit pin is installed between the front and rear benchmark mounting plates on the right side of the lower part of the corresponding benchmark connecting hole; or / and, the ruler seat box is a five-sided box body with an opening facing downward, and ruler seat ear plates are respectively provided on the lower left and right sides of the front plate and the lower left and right sides of the rear plate of the ruler seat box, and seat frame ear seats are respectively fixed on the sides of the base frame corresponding to the positions of each ruler seat ear plate, and the ruler seat box and the base frame are fixed together through the ruler seat ear plates, the seat frame ear seats and bolts.

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