CN109883884B

CN109883884B - High-precision mud hydrometer

Info

Publication number: CN109883884B
Application number: CN201910189903.1A
Authority: CN
Inventors: 代刚; 谈蔚雯
Original assignee: Beijing Huitianfeng Petroleum Machinery Co ltd
Current assignee: Beijing Huitianfeng Petroleum Machinery Co ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2021-07-13
Anticipated expiration: 2039-03-13
Also published as: CN109883884A

Abstract

The invention relates to a high-precision mud hydrometer which comprises a base, a lever, a mud cup, a balance weight and a balance weight, wherein the lever is hinged on the base, the mud cup is arranged at one end of the lever, the balance weight is arranged at the other end of the lever, the balance weight is connected onto the lever in a sliding manner, a cup cover is buckled on the mud cup, a plurality of air holes are formed in the upper portion of the cup cover, a stirring mechanism is arranged on the mud cup and comprises a motor fixedly arranged on the cup cover, a rotating rod and a forward spiral blade, the rotating rod is rotatably connected into the cup cover, the forward spiral blade is connected onto the outer ring surface of the rotating rod, a reverse spiral blade is arranged on the outer side of the forward spiral blade. The present invention has the effect of stirring the concrete to overflow gas to improve the accuracy of concrete measurement.

Description

High-precision mud hydrometer

Technical Field

The invention relates to the technical field of mud hydrometers, in particular to a high-precision mud hydrometer.

Background

In the construction process of the hole pile, whether the specific gravity of the slurry meets the construction requirement is required to be determined before pouring the water concrete. At present, an unequal-arm lever mud hydrometer is generally used for measuring the mud proportion, the mud hydrometer comprises a graduated lever, one end of the lever is connected with a mud cup, the other end of the lever is connected with a balance cylinder, a weight (lead particles) for correcting the balance of the lever is added, a main knife edge embedded on the lever is used as a fulcrum, the main knife edge is placed on a main knife pad on a base, and the graduation is read to be the mud proportion after the lever is balanced by moving a weight arranged on the lever.

Among the prior art, the chinese patent of grant publication No. CN207751821U that can refer to, it discloses a mud ratio meter, including base and the lever of taking the scale, the one end of lever is connected with the mud cup, and the other end is connected with balanced cylinder, be provided with the main edge of a knife on the lever, the main edge of a knife is placed as the fulcrum and is made the lever be the balance shape of arm that varies on the base including main shim and chassis, main shim with main edge of a knife is articulated, main shim is connected on the chassis through the drive arrangement who drives main shim oscilaltion, main shim is provided with the mobile strutting arrangement who switches supporting status and non-supporting status, strutting arrangement locks the lever to the horizontality when being in supporting status.

The above prior art solutions have the following drawbacks: this file is through setting up strutting arrangement in order to prevent because the staff leads to the inaccurate to preventing concrete measurement because of rocking of people's hand when operation mud cup, at the in-process to concrete measurement, not only the precision error that people's hand operation caused, at the in-process of pouring the concrete into the mud cup, inevitably can get into more bubble, if these bubbles do not discharge before concrete measurement, can occupy the volume of concrete in the mud cup and lead to concrete density measuring's error, so how to discharge the bubble effectively is a problem that needs to solve.

Disclosure of Invention

It is an object of the present invention to provide a high precision mud densitometer for agitating concrete to spill gas out to improve the accuracy of concrete measurements.

The above object of the present invention is achieved by the following technical solutions:

the high-precision mud hydrometer comprises a base, a lever, a mud cup, a balance weight and a traveling weight, wherein the lever is hinged to the base, the mud cup is arranged at one end of the lever, the balance weight is arranged at the other end of the lever, the traveling weight is connected to the lever in a sliding mode, scales are arranged on the lever, a cup cover is buckled on the mud cup, a plurality of air holes are formed in the upper portion of the cup cover, a stirring mechanism is arranged on the mud cup and comprises a motor fixedly arranged on the cup cover, a rotating rod and a forward spiral blade, the rotating rod is rotatably connected into the cup cover, the forward spiral blade is connected to the outer annular surface of the rotating rod, a reverse spiral blade is arranged on the outer.

Through adopting above-mentioned technical scheme, when measuring the concrete, open the bowl cover earlier, with concrete pouring to capacity in the mud cup, then detain the bowl cover, motor work drives the dwang and rotates, the dwang drives concrete rebound through driving forward spiral leaf, the dwang passes through drive assembly simultaneously and drives reverse spiral leaf and rotate, reverse spiral leaf drives concrete rebound, when carrying out the stirring to the concrete like this, it reciprocates to drive the concrete and carry out relapseing, make the bubble of mud cup bottom can be quick more move to the upper portion of mud cup and extrude from the air vent, the stirring efficiency of concrete has been improved.

The invention is further configured to: the transmission assembly comprises a first gear, a plurality of driven rods, a second gear and a connecting sleeve, wherein the first gear is fixedly arranged on the rotating rod, the driven rods are arranged on the outer side of the first gear, the connecting sleeve is fixedly arranged on the second gear on the driven rods, the connecting sleeve is arranged on the outer side of the second gear, the first gear is meshed with the second gear, inner teeth meshed with the second gear are fixedly arranged on the inner side wall of the connecting sleeve, the upper portion of the connecting sleeve is rotatably connected with the cup cover, and the lower portion of the connecting sleeve is connected with the reverse spiral blade.

Through adopting above-mentioned technical scheme, the dwang rotates and drives first gear and rotates, and first gear rotates simultaneously through meshing in order to drive a plurality of second gears with the second gear, and then the second gear drives the connecting cover and rotates in the below of bowl cover, and then the adapter sleeve drives reverse spiral leaf and rotates, has certain distance between forward spiral leaf and the reverse spiral leaf simultaneously and can not influence each other in order to guarantee that the upper and lower flow of concrete, and the stirring efficiency of concrete is higher.

The invention is further configured to: the outside of dwang sets firmly the head rod that a plurality of levels set up, the outer terminal surface of head rod and the inside wall fixed connection of forward spiral leaf.

Through adopting above-mentioned technical scheme, the dwang links to each other with forward spiral leaf through a plurality of head rods, and is fixed stable to there is certain clearance between forward spiral leaf and the dwang, forward spiral leaf can upwards carry its and the dwang between the concrete, and the effect of stirring can be played to the concrete between forward spiral leaf and the dwang to the head rod simultaneously, and is more high-efficient.

The invention is further configured to: the bottom of adapter sleeve sets firmly a plurality of vertical settings and is the connecting plate that the circumference was arranged, forms into the thick liquid mouth between two adjacent connecting plates, reverse spiral leaf is located the inboard of connecting plate, a plurality of second connecting rods that the level set up set firmly between connecting plate and the reverse spiral leaf.

Through adopting above-mentioned technical scheme, the connecting plate is fixed reverse spiral leaf through a plurality of connecting plates of below, and the entering of the concrete in the outside can be made things convenient for to the grout inlet between a plurality of connecting plates to a plurality of second connecting rods can carry out stable fixed to reverse spiral leaf, and the second connecting rod can play the effect of certain stirring simultaneously, and stirring efficiency is higher.

The invention is further configured to: an annular limiting sleeve is fixedly arranged on the outer annular surface of the connecting sleeve, a connecting groove with an inverted L-shaped cross section is formed in the bottom of the cup cover, and the limiting sleeve and the connecting sleeve are rotatably connected in the connecting groove.

Through adopting above-mentioned technical scheme, at the adapter sleeve pivoted in-process, the stop collar is followed the adapter sleeve and is rotated, and the stop collar can be spacing to the upper portion of adapter sleeve simultaneously to prevent that the stop collar from taking place the skew.

The invention is further configured to: the inside wall of the connecting sleeve is provided with a plurality of balls, and the balls are attached to the inside wall of the connecting groove.

Through adopting above-mentioned technical scheme, when the adapter sleeve rotated, the ball can roll along the inside wall of spread groove to reduce the friction of adapter sleeve when rotating, it is more convenient.

The invention is further configured to: the mud cup is characterized in that a plurality of upper fixing plates and a plurality of lower fixing plates are fixedly arranged on the outer annular surfaces of the mud cup and the cup cover respectively, the upper fixing plates are attached to the lower fixing plates, the outer side walls of the upper fixing plates and the lower fixing plates are provided with an upper sealing groove and a lower sealing groove respectively, a lead screw is arranged in the lower sealing groove, one end of the lead screw can penetrate through the upper sealing groove and turn over to the upper portion of the upper fixing plates, a hinge rod is fixedly arranged at the lower end of the lead screw and is hinged to the side wall of the mud cup, a rotating wheel is connected to one end, far away from the hinge rod.

Through adopting above-mentioned technical scheme, after the mud cup is filled with the concrete, the bowl cover is gone up in the lock, then the pulling lead screw upwards overturns, rotates the runner directly over the last seal groove, rotates the runner, makes the upper portion of runner and bowl cover directly over hug closely, and a plurality of runners compress tightly the different positions of bowl cover in order to fix the bowl cover, and the cooperation is inseparable between bowl cover and the mud cup like this, and the concrete can not follow and spill over between the two.

The invention is further configured to: and a rubber pad is fixedly arranged at the bottom of the upper fixing plate.

Through adopting above-mentioned technical scheme, after bowl cover and mud cup lock are good, the leakproofness between in order to strengthen bowl cover and the mud cup is hugged closely with the top of bottom plate to the rubber pad.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the stirring mechanism is arranged in the slurry cup to stir the concrete in the slurry cup, so that the bubbles in the slurry cup can be quickly sent out;

2. the reverse rotation of the reverse spiral blade is realized through the matching of the first gear and the second gear, and the device is stable and efficient;

3. the rotating rod is fixedly connected with the forward spiral blade through the first connecting rods, so that the concrete is efficiently stirred.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of the mud cup and the cup cover of the present invention.

Fig. 3 is an exploded view of the lead screw and the runner of the present invention.

FIG. 4 is a schematic view of the stirring mechanism of the present invention.

Fig. 5 is an exploded view of the sealing plate of the present invention.

Fig. 6 is a schematic cross-sectional and exploded view of the lid of the present invention.

In the figure, 1, a base; 2. a lever; 21. calibration; 3. a mud cup; 31. a cup cover; 311. an inner cavity; 312. connecting grooves; 313. an upper fixing plate; 3131. an upper seal groove; 314. a rubber pad; 32. a sealing plate; 321. an opening; 322. mounting a plate; 33. air holes are formed; 34. a lower fixing plate; 341. a lower seal groove; 35. a connecting seat; 36. a screw rod; 361. a hinged lever; 362. a rotating wheel; 4. a run number; 5. a tray; 51. a weight; 6. a stirring mechanism; 61. a motor; 62. rotating the rod; 621. a first connecting rod; 63. a forward helical blade; 64. a transmission assembly; 641. a first gear; 642. a driven lever; 643. a second gear; 644. connecting sleeves; 6441. a ball bearing; 645. a limiting sleeve; 646. a connecting plate; 647. a second connecting rod; 65. and (4) reverse spiral blades.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the high-precision mud hydrometer disclosed by the invention comprises a base 1, a lever 2, a mud cup 3, a balance weight 4 and a tray 5. Base 1 is cylindrical and its middle part vertical extension that makes progress to the diameter of its extension is less than base 1's diameter, 2 levels of lever set up and its lower part is articulated with base 1's extension, upper portion one side of lever 2 is carved with scale 21, the side that has scale 21 on 2 upper portions of lever is connected in sliding to the vernier 4, and tray 5 is vertical to be set firmly in the one end that lever 2 is close to vernier 4, placed weight 51 on tray 5, mud cup 3 is cylindrical and vertical the one end of keeping away from tray 5 at lever 2 that sets firmly, the top lid of mud cup 3 is equipped with the bowl cover 31 that the circular shape level set up. After the concrete is filled in the mud cup 3, the corresponding weight 51 is placed on the tray 5, then the sliding weight 4 is moved, the left side and the right side of the lever 2 are kept balanced, and the measured weight of the concrete is calculated according to the total weight of the weight 51 and the degree of the sliding weight 4.

As shown in fig. 2 and 3, the cup cover 31 is provided with a stirring mechanism 6 for stirring concrete, and the stirring mechanism 6 includes a motor 61, a rotating rod 62, a forward spiral blade 63, a transmission assembly 64 and a reverse spiral blade 65. The vertical setting of motor 61 and set firmly on bowl cover 31, the pivot of motor 61 stretches into in the bowl cover 31, the vertical axis position department of locating bowl cover 31 of dwang 62, and the upper end of dwang 62 and motor 61's pivot fixed connection, the bottom of mud cup 3 is stretched into to the lower extreme of dwang 62, forward spiral leaf 63 is around the vertical setting of outer anchor ring of dwang 62, and be equipped with the head rod 621 that a plurality of levels set up between dwang 62 and the reverse spiral leaf 65, the direction evenly distributed that encircles of river forward spiral leaf 63 is followed to a plurality of head rods 621, and head rod 621 and forward spiral leaf 63 respectively with the lateral wall fixed connection of dwang 62 and forward spiral leaf 63.

As shown in fig. 4 and 5, a cylindrical inner cavity 311 is formed inside the cup cover 31, the transmission assemblies 64 are all arranged in the inner cavity 311, and each transmission assembly 64 includes a first gear 641, a driven rod 642, a second gear 643 and a connecting sleeve 644. The first gear 641 is horizontally arranged and coaxially and fixedly connected to the rotating rod 62, the driven rods 642 are three in number and uniformly distributed along the outer annular surface of the first gear 641, the second gears 643 are three in number and coaxially and fixedly connected with the three driven rods 642 respectively, the upper ends of the driven rods 642 are rotatably connected with the inner side wall of the inner cavity 311, a sealing plate 32 horizontally arranged is arranged at the bottom of the cup cover 31, the upper surface of the sealing plate 32 is attached to the lower surface of the cup cover 31, fan-shaped openings 321 are formed in positions, corresponding to the sealing plate 32, between the adjacent second gears 643, vertically arranged mounting plates 322 are fixedly arranged in positions, corresponding to the sealing plate 32, between the adjacent two second gears 643, the mounting plates 322 are arranged around the outer peripheral surface of the openings 321, and the mounting plates 322 extend into the inner cavity 311 and are fixedly connected with the upper end surface of. The cup cover 31 is provided with a plurality of air holes 33 at positions corresponding to the three openings 321, and the air holes 33 are communicated with the upper side and the lower side of the cup cover 31.

The connecting sleeve 644 is circular and coaxially disposed outside the rotating rod 62, and the connecting sleeve 644 is disposed at the same height as the first gear 641 and the second gear 643, and inner teeth distributed in a circular shape are fixedly disposed on an inner side wall of the connecting sleeve 644, and the inner teeth are engaged with the three second gears 643. The outer side wall of the connecting sleeve 644 is fixedly provided with a circular ring-shaped limiting sleeve 645, the limiting sleeve 645 is located at the upper portion of the connecting sleeve 644, so that the limiting sleeve 645 and the connecting sleeve 644 are integrally in a step shape, the outer side of the inner cavity 311 is provided with a connecting groove 312 with an inverted L-shaped cross section, the limiting sleeve 645 and the connecting sleeve 644 are rotatably connected in the connecting groove 312, and the connecting sleeve 644 can stably rotate in the connecting groove 312 under the limiting of the limiting sleeve 645.

The bottom of adapter sleeve 644 is equipped with the connecting plate 646 of three vertical settings, three connecting plate 646 is the circumference form evenly distributed around the outer ring surface of dwang 62, reverse spiral leaf 65 is vertical to be set up in three connecting plate 646, be equipped with a plurality of second connecting rods 647 between connecting plate 646 and the one-way spiral leaf, a plurality of second connecting rods 647 are along the spiral direction evenly distributed of reverse spiral leaf 65, and the both ends of second connecting rod 647 are respectively in the lateral wall fixed connection of adjacent connecting plate 646 and reverse spiral leaf 65, reverse spiral leaf 65 is the same with the spiral direction of forward spiral leaf 63, when motor 61 work, forward spiral leaf 63 drives the concrete upward movement, reverse spiral leaf 65 drives the concrete downward movement, and then makes the concrete can the circular reciprocating motion.

When measuring the concrete, open bowl cover 31 earlier, with the concrete fill in mud cup 3, then detain bowl cover 31, motor 61 work drives dwang 62 and rotates, dwang 62 drives concrete rebound through driving forward spiral leaf 63, dwang 62 drives reverse spiral leaf 65 through drive assembly 64 and rotates simultaneously, reverse spiral leaf 65 drives concrete rebound, when carrying out the stirring to the concrete like this, it reciprocates to drive the concrete and carry out relapseing, make the bubble of mud cup 3 bottom can be quick more remove the upper portion of mud cup 3 and extrude from the air vent, the stirring efficiency of concrete has been improved.

The rotating rod 62 rotates and drives the first gear 641 to rotate, the first gear 641 rotates with driving a plurality of second gears 643 through meshing with the second gears 643, then the second gears 643 drive the connecting sleeve 644 to rotate below the cup cover 31, and then the connecting sleeve 644 drives the reverse spiral blade 65 to rotate, and meanwhile, a certain distance exists between the forward spiral blade 63 and the reverse spiral blade 65 to ensure that the up-and-down flowing of concrete cannot affect each other, and the stirring efficiency of the concrete is higher.

The dwang 62 links to each other with positive spiral leaf 63 through a plurality of head rods 621, and is fixed stable to there is certain clearance between positive spiral leaf 63 and the dwang 62, and positive spiral leaf 63 can upwards carry its concrete between and the dwang 62, and head rods 621 can play the effect of stirring to the concrete between positive spiral leaf 63 and the dwang 62 simultaneously, and is more efficient. Connecting plate 646 comes to fix reverse spiral leaf 65 through a plurality of connecting plates 646 of below, and the entering of the concrete in the outside can be made things convenient for to the grout inlet between a plurality of connecting plates 646 to a plurality of second connecting rods 647 can carry out stable fixed to reverse spiral leaf 65, and second connecting rod 647 can play the effect of certain stirring simultaneously, and stirring efficiency is higher. In the process of rotating the connecting sleeve 644, the limiting sleeve 645 rotates along with the connecting sleeve 644, and meanwhile, the limiting sleeve 645 can limit the upper part of the connecting sleeve 644 to prevent the limiting sleeve 645 from deviating.

The outer annular surface of the connecting sleeve 644 is uniformly provided with a plurality of balls 6441, the balls 6441 are in rolling connection with the outer side wall of the connecting sleeve 644, the outer annular surface of the balls 6441 is attached to the inner side wall of the connecting groove 312, and when the connecting sleeve 644 rotates, the balls 6441 roll along the inner side wall of the connecting groove 312, so that friction of the connecting sleeve 644 during rotation is reduced, and the connecting sleeve 644 is more convenient to use.

As shown in fig. 2 and 6, a circular upper fixing plate 313 and a circular lower fixing plate 34 are respectively and fixedly arranged on the top of the mud cup 3 and the outer side wall of the cup cover 31, the upper fixing plate 313 and the lower fixing plate 34 are coaxially arranged with the cup cover 31 and the mud cup 3, a plurality of pairs of connecting seats 35 are fixedly arranged on the side wall of the mud cup 3, each connecting seat 35 is vertically arranged, the upper fixing plate 313 and the lower fixing plate 34 are correspondingly provided with an upper sealing groove 3131 and a lower sealing groove 341 at positions above the connecting seats 35, the upper sealing groove 3131 and the lower sealing groove 341 are both long-strip-shaped and arc-shaped on the inner sides, a vertically arranged screw rod 36 is arranged between the upper sealing groove 3131 and the lower sealing groove 341, the lower end of the screw rod 36 is arranged between the adjacent pair of connecting seats 35, a horizontally arranged hinge rod 361 is fixedly arranged at the lower end of the screw rod 36. A runner 362 is threadedly connected to an upper portion of the screw rod 36, and a diameter of the runner 362 is larger than widths of the upper sealing groove 3131 and the lower sealing groove 341. And the bottom of the upper fixing plate 313 is fixedly provided with a circular rubber pad 314, and the lower end surface of the rubber pad 314 is attached to the upper end surface of the lower fixing plate 34.

After the mud cup 3 is filled with concrete, the upper cup cover 31 is buckled, the screw rod 36 is pulled to turn upwards, the rotating wheel 362 is rotated right above the upper sealing groove 3131, the rotating wheel 362 is rotated to enable the upper part of the rotating wheel 362 to be tightly attached to the right above the cup cover 31, the different positions of the cup cover 31 are tightly pressed by the rotating wheels 362 to fix the cup cover 31, so that the cup cover 31 and the mud cup 3 are tightly matched, and the concrete cannot overflow from the cup cover and the mud cup. After the cup cover 31 is fastened with the mud cup 3, the rubber pad 314 is tightly attached to the top of the cup cover 31 to enhance the sealing performance between the cup cover 31 and the mud cup 3.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a high accuracy mud hydrometer, includes base (1), articulates lever (2) on base (1), locates mud cup (3) of lever (2) one end, locates tray (5) of the lever (2) other end and slides and connect and walk sign indicating number (4) on lever (2), be equipped with scale (21) on lever (2), the lock has bowl cover (31), its characterized in that on mud cup (3): the mud cup is characterized in that a plurality of air holes (33) are formed in the upper portion of the cup cover (31), a stirring mechanism (6) is arranged on the mud cup (3), the stirring mechanism (6) comprises a motor (61) fixedly arranged on the cup cover (31), a rotating rod (62) rotatably connected into the cup cover (31) and a forward spiral blade (63) connected to the outer annular surface of the rotating rod (62), a reverse spiral blade (65) is arranged on the outer side of the forward spiral blade (63), and a transmission assembly (64) for driving the reverse spiral blade (65) to rotate is arranged on the rotating rod (62); the transmission assembly (64) comprises a first gear (641) fixedly arranged on the rotating rod (62), a plurality of driven rods (642) arranged on the outer side of the first gear (641), a second gear (643) fixedly arranged on the driven rods (642) and a connecting sleeve (644) arranged on the outer side of the second gear (643), wherein the first gear (641) is meshed with the second gear (643), inner teeth meshed with the second gear (643) are fixedly arranged on the inner side wall of the connecting sleeve (644), the upper part of the connecting sleeve (644) is rotatably connected with the cup cover (31), and the lower part of the connecting sleeve (644) is connected with the reverse spiral blade (65); a cylindrical inner cavity (311) is formed in the cup cover (31), a sealing plate (32) which is horizontally arranged is arranged at the bottom of the cup cover (31), the upper surface of the sealing plate (32) is attached to the lower surface of the cup cover (31), a fan-shaped opening (321) is formed in the position, corresponding to the position between the adjacent second gears (643), of the sealing plate (32), the sealing plate (32) is fixedly provided with a vertically arranged mounting plate (322) at a position corresponding to the position between two adjacent second gears (643), the mounting plate (322) is arranged around the peripheral surface of the opening (321), the mounting plate (322) extends into the inner cavity (311) and is fixedly connected with the upper end surface of the inner cavity (311), the cup cover (31) is provided with a plurality of air holes (33) corresponding to the three openings (321), and the air holes (33) are communicated with the upper side and the lower side of the cup cover (31).

2. The high accuracy mud pycnometer of claim 1 wherein: the outside of dwang (62) sets firmly head rod (621) that a plurality of levels set up, the outer terminal surface of head rod (621) and the inside wall fixed connection of forward spiral leaf (63).

3. The high accuracy mud pycnometer of claim 1 wherein: the bottom of the connecting sleeve (644) is fixedly provided with a plurality of connecting plates (646) which are vertically arranged and circumferentially arranged, a pulp inlet is formed between every two adjacent connecting plates (646), the reverse spiral blade (65) is positioned on the inner side of the connecting plates (646), and a plurality of second connecting rods (647) which are horizontally arranged are fixedly arranged between the connecting plates (646) and the reverse spiral blade (65).

4. The high accuracy mud pycnometer of claim 1 wherein: an annular limiting sleeve (645) is fixedly arranged on the outer annular surface of the connecting sleeve (644), a connecting groove (312) with an inverted L-shaped cross section is formed in the bottom of the cup cover (31), and the limiting sleeve (645) and the connecting sleeve (644) are rotatably connected in the connecting groove (312).

5. The high accuracy mud pycnometer of claim 4 wherein: the inner side wall of the connecting sleeve (644) is provided with a plurality of balls (6441), and the balls (6441) are attached to the inner side wall of the connecting groove (312).

6. The high accuracy mud pycnometer of claim 1 wherein: the mud cup (3) and the outer annular surface of bowl cover (31) are gone up and are set firmly a plurality of upper mounting plate (313) and bottom plate (34) respectively, upper mounting plate (313) and bottom plate (34) are pasted and have seted up on the lateral wall between them respectively seal groove (3131) and lower seal groove (341), be equipped with lead screw (36) in lower seal groove (341), the one end of lead screw (36) can pass upper seal groove (3131) and overturn the top of upper mounting plate (313), the lower extreme of lead screw (36) has set firmly articulated pole (361), articulated pole (361) are articulated with the lateral wall of mud cup (3), the one end threaded connection that articulated pole (361) were kept away from in lead screw (36) has runner (362), the diameter of runner (362) is greater than the width of upper seal groove (3131).

7. The high accuracy mud pycnometer of claim 6 wherein: the bottom of the upper fixing plate (313) is fixedly provided with a rubber pad (314).