CN213068555U - Portable cement fineness negative pressure screen analysis appearance - Google Patents

Abstract

The utility model belongs to the technical field of the concrete production and specifically relates to a portable cement fineness negative pressure screen analysis appearance is related to, it includes organism and a whirlwind section of thick bamboo, the first breather pipe of organism fixedly connected with, whirlwind section of thick bamboo fixedly connected with second breather pipe, be provided with the connecting piece between first breather pipe and the second breather pipe, the week side cover of a whirlwind section of thick bamboo is equipped with the holding ring, the organism is provided with the spacing subassembly that is used for the bearing holding ring, organism fixedly connected with support frame, the support frame has two movable blocks along horizontal direction sliding connection, the equal fixedly connected with of two movable blocks is used for holding the arc piece of a fixed whirlwind section of thick bamboo tightly, the support frame. This application utilizes the movable block to drive two arc pieces and embraces fixed cyclone tightly, has the effect of being convenient for ann and tear open the cyclone, is favorable to reducing the weight of organism, and the operating personnel of being convenient for removes organism and cyclone respectively, is favorable to reducing operating personnel intensity of labour.

Description

Portable cement fineness negative pressure screen analysis appearance

Technical Field

The application relates to the field of concrete production, in particular to a portable cement fineness negative pressure screen analyzer.

Background

The concrete is an artificial stone which is prepared by taking cement as a main cementing material, mixing water, sand, stones and chemical additives and mineral admixtures as necessary according to a proper proportion, uniformly stirring, densely forming, curing and hardening. As the fineness of cement affects the quality of concrete production, the prior art uses a cement fineness negative pressure screen analyzer to test the fineness of ordinary portland cement, slag portland cement, fly ash portland cement and composite portland cement, and the cement fineness negative pressure screen analyzer mainly comprises a screen seat, a micro motor, a dust collector, a cyclone cylinder and an electric appliance.

The retrieved Chinese patent with the publication number of CN210923398U discloses a negative pressure screen analyzer, which comprises a machine body, wherein an analysis screen is arranged on the machine body, a cover plate is arranged at the top of the analysis screen, a cyclone cylinder is arranged on one side of the machine body, the cyclone cylinder is communicated with the bottom of the analysis screen, an ash collecting bottle is arranged at the bottom of the cyclone cylinder, a dust collector is arranged in the machine body, an inlet pipe and an outlet pipe are arranged on the dust collector, the inlet pipe is communicated with the cyclone cylinder, a dust collecting bag is sleeved on the outlet pipe, an auxiliary pressing block is arranged at the opening end of the dust collecting bag, a first boss and a second boss are arranged on the outer wall of the outlet pipe, a resisting spring is arranged on one side of the first boss, which is close to the second boss, a pressing plate is arranged on the outlet pipe and is positioned between the first boss and the second boss in a sliding manner, the pressing plate is fixedly connected with the resisting spring, and when the.

In view of the above-mentioned related technologies, the inventor believes that when the negative pressure screen analyzer is transported, the cyclone and the body are in an integrated structure, which increases the overall weight of the body, thereby increasing the labor intensity of the operator and being inconvenient to move the negative pressure screen analyzer.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the cyclone is difficult to with the organism dismouting, the application provides a portable cement fineness negative pressure sieve analysis appearance.

The application provides a portable cement fineness negative pressure sieve analysis appearance adopts following technical scheme:

the utility model provides a portable cement fineness negative pressure screen analysis appearance, includes organism and a whirlwind section of thick bamboo, the first breather pipe of organism fixedly connected with, a whirlwind section of thick bamboo fixedly connected with second breather pipe, first breather pipe with be provided with the connecting piece between the second breather pipe, the week side cover of a whirlwind section of thick bamboo is equipped with the holding ring, the organism is provided with and is used for the bearing the spacing subassembly of holding ring, organism fixedly connected with support frame, the support frame has two movable blocks, two along horizontal direction sliding connection the equal fixedly connected with of movable block is used for holding tightly fixedly the arc piece of a whirlwind section of thick bamboo, the support frame is provided with and is used for adjusting two the adjusting part of the.

By adopting the technical scheme, when the cyclone cylinder and the machine body are required to be fixed, the minimum distance between the two arc-shaped blocks is larger than the caliber of the cyclone cylinder, so that the cyclone cylinder can move to a position between the two arc-shaped blocks along the horizontal direction, the cyclone cylinder is supported by the limiting assembly through the positioning ring, and therefore an operator is not required to lift the cyclone cylinder all the time, the first vent pipe and the second vent pipe are communicated with each other by the connecting piece of the operator, and then the two arc-shaped blocks are driven to move towards the cyclone cylinder by the adjusting assembly, so that the two arc-shaped blocks tightly hold the fixed cyclone cylinder, and the effect of conveniently installing the cyclone cylinder is realized;

when the cyclone cylinder and the machine body need to be separated, the two arc-shaped blocks deviate from the cyclone cylinder by using the adjusting assembly, the first vent pipe and the second vent pipe are separated by using the connecting piece, and then the cyclone cylinder is moved along the direction deviating from the machine body along the horizontal direction, so that the positioning ring leaves the limiting assembly, and the effect of conveniently disassembling the cyclone cylinder is realized; the cyclone cylinder is convenient to mount and dismount, so that the weight of the machine body is reduced, an operator can conveniently move the machine body and the cyclone cylinder respectively, and the labor intensity of the operator is reduced.

Preferably, spacing subassembly includes two gag lever posts, two the gag lever post be located the coplanar and all with organism fixed connection, the spacing groove has all been seted up along the horizontal direction at the both ends that the gag lever post is relative, the upper end of spacing groove and keeping away from the one end of organism is the opening setting, the both ends that the holding ring is relative all in the spacing inslot with the gag lever post butt.

By adopting the technical scheme, when the cyclone is installed, the cyclone is moved towards the direction close to the machine body, so that the two opposite ends of the positioning ring respectively slide into the two limiting grooves, the lower end of the positioning ring and the two ends which are deviated from the positioning ring are abutted against the limiting rods in the limiting grooves, and the two limiting rods are utilized to realize the supporting effect on the positioning ring, so that the effect of supporting the cyclone is realized, an operator does not need to continuously lift the cyclone in the installation and disassembly processes, the cyclone is convenient to install and disassemble by the operator, and the labor intensity of the operator is reduced; and it is advantageous to keep the cyclone vertical to facilitate the connection and separation of the first and second ventilation pipes.

Preferably, the support frame is fixedly connected with guide bars along the horizontal direction, the guide bars are located between the cyclone and the machine body, the guide bars are square bars, two the movable blocks are all sleeved on the peripheral sides of the guide bars, and the movable blocks are matched with the guide bars in a sliding manner.

Through adopting above-mentioned technical scheme, two movable blocks move along the horizontal direction on the guide bar respectively, and the guide bar is square and the movable block adaptation that slides with the guide bar, is favorable to preventing that the movable block from rotating for the movable block drives the arc piece and moves steadily.

Preferably, the adjusting part includes drive block and two movable rods, support frame fixedly connected with locating plate, the drive block along vertical direction with locating plate sliding connection, two the movable rod respectively with two the movable block articulates there is the primary shaft, two the movable rod respectively with the drive block articulates there is the secondary shaft, the primary shaft with the axial of secondary shaft all sets up along the horizontal direction, the drive block with be provided with fixed subassembly between the locating plate.

By adopting the technical scheme, when the driving block moves upwards along the positioning plate, the driving block gradually approaches the guide rod, so that the included angle between the two movable rods is gradually increased, the two movable rods respectively push the two movable blocks to move away from each other, and the two movable blocks respectively drive the two arc-shaped blocks to move towards the direction away from the cyclone cylinder, so that the cyclone cylinder can be taken down; when the driving block moves downwards along the positioning plate, the included angle between the two movable rods is gradually reduced, the two movable rods drive the two movable blocks to move in opposite directions respectively, the two movable blocks drive the two arc-shaped blocks to move in opposite directions respectively to tightly hold the cyclone cylinder, and the driving block is fixed with the positioning plate by using the fixing assembly, so that the two arc-shaped blocks stably tightly hold the fixed cyclone cylinder, and the effect of conveniently mounting the cyclone cylinder is realized.

Preferably, the locating plate is provided with a T-shaped sliding chute in the vertical direction, the sliding chute is closed at two ends in the vertical direction, and the driving block is fixedly connected with a sliding block which is matched with the sliding chute in a sliding manner.

Through adopting above-mentioned technical scheme, the spout adaptation that slides of slider and T shape is favorable to preventing the drive block swing for the drive block moves along vertical direction steadily.

Preferably, the fixing assembly comprises a fixing block and an inserting block, the fixing block is fixedly connected with the driving block, the fixing block is abutted to the positioning plate, the fixing block faces towards the positioning plate, a connecting hole is formed in the positioning plate in a penetrating mode, the inserting block is matched with the connecting hole in a sliding mode, the positioning plate is provided with two inserting grooves, the two inserting grooves are distributed vertically in the same vertical direction respectively, the inserting block is matched with the inserting grooves in an inserting mode, and an elastic piece is arranged between the inserting block and the fixing block.

Through adopting above-mentioned technical scheme, during the installation cyclone, the orientation deviates from the orientation of locating plate and will inserts the piece and draw from the inserting groove, so that promote the drive block along vertical direction motion, the elastic component is stretched this moment, move down the drive block to a connecting hole and aim at with a inserting groove of lower department, release the inserting block, the elasticity of elastic component restores force and makes the one end of inserting the piece peg graft in the inserting groove, and the other end of inserting the piece wears to locate the fixed block, be favorable to preventing that the fixed block from removing along vertical direction, realize the effect of the fixed drive block of being convenient for and locating plate.

Preferably, the elastic component sets up to the elastic rubber strip, the inserted block is kept away from the mounting hole has been seted up to the one end of locating plate, the elastic rubber strip wears to locate the mounting hole just the both ends of elastic rubber strip all with fixed block fixed connection.

Through adopting above-mentioned technical scheme, utilize the mounting hole be convenient for elastic rubber strip and be connected with the grafting piece, when the grafting piece orientation deviates from the direction of locating plate and removes, elastic rubber strip is stretched, and the grafting piece leaves the inserting groove, is favorable to the drive block to remove along the locating plate smoothly, removes the grafting piece when the grafting piece removes to aligning with the inserting groove, and the elasticity of elastic rubber strip restores force and makes the grafting piece peg graft in the inserting groove.

Preferably, the connector is a quick connector, and the quick connector is mounted at the end of the first vent pipe.

By adopting the technical scheme, the quick connector is a connector which can realize the connection or disconnection of the pipelines without tools, so that an operator can conveniently connect or separate the first vent pipe and the second vent pipe, and the cyclone cylinder can be conveniently installed and detached.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the movable block is utilized to drive the two arc-shaped blocks to tightly hold the fixed cyclone cylinder so as to facilitate the installation and the disassembly of the cyclone cylinder, thus being beneficial to reducing the weight of the machine body, facilitating the respective movement of the machine body and the cyclone cylinder by an operator and being beneficial to reducing the labor intensity of the operator;

2. the driving block drives the two movable blocks to move towards or away from each other through the two movable rods, and the splicing block is spliced in the splicing groove by utilizing the elastic rubber strip so as to fix the driving block, fix the arc-shaped block and realize the effect of conveniently mounting and dismounting the cyclone cylinder;

3. the lower extreme of holding ring and the both ends that deviate from mutually all in spacing inslot and gag lever post butt, utilize two gag lever posts bearing cyclone, need not operating personnel and tear the in-process at ann and continuously lift the cyclone, the cyclone is torn open to operating personnel's ann of being convenient for, and has reduced operating personnel intensity of labour.

Drawings

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

FIG. 2 is a schematic structural diagram of the present invention with the cyclone removed.

Fig. 3 is an enlarged view at a in fig. 2.

Description of reference numerals: 1. a body; 2. a cyclone; 3. a first vent pipe; 4. a second vent pipe; 5. a quick coupling; 6. a support frame; 7. a movable block; 8. a guide bar; 9. an arc-shaped block; 10. a rubber layer; 11. a drive block; 12. positioning a plate; 13. a chute; 14. a movable rod; 15. a first shaft; 16. a second shaft; 17. a fixed block; 18. an insertion block; 19. connecting holes; 20. inserting grooves; 21. an elastic rubber strip; 22. a pull ring; 23. a limiting rod; 24. a limiting groove; 25. a retaining ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses portable cement fineness negative pressure sieve analysis appearance.

Referring to fig. 1 and 2, a portable cement fineness negative pressure screen analyzer comprises a machine body 1 and a cyclone 2, wherein the machine body 1 is fixedly connected with a first vent pipe 3, the upper end of the cyclone 2 is fixedly connected with a second vent pipe 4, a connecting piece is arranged between the first vent pipe 3 and the second vent pipe 4, the connecting piece is set to be a quick joint 5, and the quick joint 5 is installed at the end part of the first vent pipe 3. 1 fixedly connected with support frame 6 of organism, support frame 6 has two movable blocks 7 along horizontal direction sliding connection, support frame 6 is along the square guide bar 8 of horizontal direction fixedly connected with, guide bar 8 is located between cyclone 2 and the organism 1, the week side of guide bar 8 is located all to two movable blocks 7 covers, and movable block 7 and the adaptation that slides of guide bar 8, the equal fixedly connected with of two movable blocks 7 is used for embracing the arc 9 of fixed cyclone 2 tightly, the equal fixedly connected with rubber layer 10 in both ends that two arc 9 are relative.

Move the cyclone 2 to between two arc pieces 9 along the horizontal direction, operating personnel utilizes quick-operation joint 5 to make first breather pipe 3 and second breather pipe 4 communicate each other after, through driving two movable blocks 7 along the motion of guide bar 8 in opposite directions, be favorable to preventing movable block 7 from rotating, make movable block 7 drive arc piece 9 move towards cyclone 2 steadily, make two arc pieces 9 hold fixed cyclone 2 tightly, rubber layer 10 on the arc piece 9 and the week side butt of cyclone 2, realize the effect of installation cyclone 2.

The two arc-shaped blocks 9 are driven to move away from the cyclone cylinder 2, so that the minimum distance between the two arc-shaped blocks 9 is larger than the caliber of the cyclone cylinder 2, the first vent pipe 3 and the second vent pipe 4 are separated by the quick connector 5, and then the cyclone cylinder 2 is moved in the direction away from the machine body 1 along the horizontal direction, so that the effect of conveniently disassembling the cyclone cylinder 2 is realized. The cyclone 2 is convenient to mount and dismount, so that the weight of the machine body 1 is reduced, an operator can conveniently move the machine body 1 and the cyclone 2 respectively, and the labor intensity of the operator is reduced.

Referring to fig. 2 and 3, in order to facilitate the position of adjusting two movable blocks 7, the support frame 6 is provided with adjusting part, adjusting part includes drive block 11 and two movable rods 14, support frame 6 fixedly connected with locating plate 12, drive block 11 is along vertical direction and locating plate 12 sliding connection, the spout 13 of T shape is seted up along vertical direction to locating plate 12, spout 13 is closed setting along the both ends of vertical direction, drive block 11 fixedly connected with slider (not shown in the figure), the slider slides the adaptation with spout 13. Two movable rods 14 are respectively articulated with two movable blocks 7 to form a first shaft 15, two movable rods 14 are respectively articulated with a second shaft 16 with a driving block 11, the axial directions of the first shaft 15 and the second shaft 16 are both arranged along the horizontal direction, and the two first shafts 15 and the two second shafts 16 are respectively symmetrically arranged relative to the vertical symmetrical plane of the driving block 11.

When the driving block 11 moves upwards along the positioning plate 12, the sliding block moves upwards along the T-shaped sliding groove 13, so that the driving block 11 is prevented from swinging, the driving block 11 is gradually close to the guide rod 8, an included angle between the two movable rods 14 is gradually increased, the two movable rods 14 respectively push the two movable blocks 7 to move away from each other, and the two movable blocks 7 respectively drive the two arc-shaped blocks 9 to move towards a direction away from the cyclone cylinder 2 (refer to fig. 1), so that the cyclone cylinder 2 can be taken down.

When the driving block 11 moves downwards along the positioning plate 12, the included angle between the two movable rods 14 is gradually reduced, the two movable rods 14 respectively drive the two movable blocks 7 to move in opposite directions, the two movable blocks 7 respectively drive the two arc-shaped blocks 9 to move in opposite directions to tightly hold the cyclone cylinder 2, and at the moment, the two arc-shaped blocks 9 stably tightly hold the fixed cyclone cylinder 2 by fixing the driving block 11 and the positioning plate 12, so that the effect of conveniently installing the cyclone cylinder 2 is realized.

Refer to fig. 3, for the convenience of the drive block 11 is fixed with locating plate 12, be provided with fixed subassembly between drive block 11 and the locating plate 12, fixed subassembly includes fixed block 17 and grafting piece 18, fixed block 17 and drive block 11 fixed connection, fixed block 17 and locating plate 12 butt, fixed block 17 runs through towards locating plate 12 and has seted up connecting hole 19, grafting piece 18 and the adaptation that slides of connecting hole 19, two inserting groove 20 have been seted up to locating plate 12, two inserting groove 20 are upper and lower distribution in same vertical direction respectively, inserting block 18 and inserting groove 20 grafting adaptation.

Be provided with the elastic component between grafting piece 18 and the fixed block 17, the elastic component sets up to elastic rubber strip 21, and the mounting hole has been seted up to the one end that grafting piece 18 kept away from locating plate 12, and elastic rubber strip 21 wears to locate the both ends of mounting hole and elastic rubber strip 21 all with fixed block 17 fixed connection, and grafting piece 18 keeps away from the annular pull ring 22 of one end fixedly connected with of holding ring 25.

When the cyclone 2 is installed, the insertion block 18 is pulled towards the direction departing from the positioning plate 12 through the pull ring 22, so that the insertion block 18 leaves the insertion groove 20, and at the moment, the elastic rubber strip 21 is stretched, so that the driving block 11 is pushed to move along the vertical direction, and the position of the arc-shaped block 9 is adjusted; move down the drive block 11 to a connecting hole 19 and aim at with a inserting groove 20 of lower department, relieve inserting block 18, the elasticity restoring force of elastic rubber strip 21 makes inserting block 18 peg graft in inserting groove 20, and inserting block 18's the other end wears to locate fixed block 17, is favorable to preventing fixed block 17 from removing along vertical direction, realizes being convenient for fixed drive block 11 and locating plate 12's effect.

Referring to fig. 1 and 2, in order to facilitate the installation of the cyclone 2, the peripheral side cover of the cyclone 2 is provided with a square positioning ring 25, and the positioning ring 25 is fixedly connected with the cyclone 2, the machine body 1 is provided with a limiting component for supporting the positioning ring 25, the limiting component comprises two limiting rods 23, the two limiting rods 23 are located on the same plane and are all fixedly connected with the machine body 1, the two opposite ends of the limiting rods 23 are all provided with a limiting groove 24 along the horizontal direction, the upper end of the limiting groove 24 and the one end far away from the machine body 1 are both arranged in an opening, and the two opposite ends of the positioning ring 25 are all abutted to the limiting grooves 24 and the limiting.

When the cyclone cylinder 2 is installed, the cyclone cylinder 2 is moved towards the direction close to the machine body 1, so that the two opposite ends of the positioning ring 25 respectively slide into the two limiting grooves 24, the lower end of the positioning ring 25 and the two opposite ends of the positioning ring 25 are abutted against the limiting rods 23 in the limiting grooves 24, and the two limiting rods 23 are utilized to realize the bearing effect on the positioning ring 25, so that the effect of bearing the cyclone cylinder 2 is realized, an operator does not need to continuously lift the cyclone cylinder 2 in the mounting and dismounting process, the operator can mount and dismount the cyclone cylinder 2 conveniently, and the labor intensity of the operator is reduced; and it is advantageous to keep the cyclone vessel 2 upright to facilitate connection and separation of the first and second ventilation tubes 3 and 4.

The implementation principle of the embodiment of the application is as follows:

when the cyclone cylinder 2 is installed, the cyclone cylinder 2 is moved towards the direction close to the machine body 1, so that the two opposite ends of the positioning ring 25 respectively slide into the two limiting grooves 24, when the positioning ring 25 moves along the limiting grooves 24 to align the first vent pipe 3 and the second vent pipe 4, the first vent pipe 3 and the second vent pipe 4 are mutually communicated by using the quick connector 5, the insertion block 18 is pulled away from the insertion groove 20 by the pull ring 22, at the moment, the elastic rubber strip 21 is stretched to push the driving block 11 to move downwards, the included angle between the two movable rods 14 is gradually reduced, the two movable rods 14 respectively drive the two movable blocks 7 to move towards each other, when the driving block 11 moves to align the connecting hole 19 with one insertion groove 20 at the lower part, at the moment, the two movable blocks 7 respectively drive the two arc-shaped blocks 9 to move towards each other to tightly clamp the cyclone cylinder 2, the insertion block 18 is released, and the elastic restoring force of the elastic rubber strip 21 enables the insertion block 18 to be inserted into the insertion groove 20, the effect of facilitating the installation of the cyclone 2 is achieved.

When the cyclone cylinder 2 is disassembled, the inserting block 18 is pulled away from the inserting groove 20, so that the driving block 11 moves upwards, the two arc-shaped blocks 9 move away from the cyclone cylinder 2, the first vent pipe 3 and the second vent pipe 4 are separated by using the quick connector 5, then the cyclone cylinder 2 is moved along the direction away from the machine body 1 along the horizontal direction, and the effect of facilitating the disassembly of the cyclone cylinder 2 is realized.

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

Claims (8)

1. The utility model provides a portable cement fineness negative pressure sieve analysis appearance which characterized in that: including organism (1) and cyclone (2), the first breather pipe (3) of organism (1) fixedly connected with, cyclone (2) fixedly connected with second breather pipe (4), first breather pipe (3) with be provided with the connecting piece between second breather pipe (4), the week side cover of cyclone (2) is equipped with holding ring (25), organism (1) is provided with and is used for the bearing the spacing subassembly of holding ring (25), organism (1) fixedly connected with support frame (6), support frame (6) have two movable blocks (7), two along horizontal direction sliding connection the equal fixedly connected with of movable block (7) is used for holding tightly fixedly arc piece (9) of cyclone (2), support frame (6) are provided with and are used for adjusting two the adjusting part of the position of movable block (7).

2. The portable cement fineness negative pressure screen analyzer of claim 1, characterized in that: spacing subassembly includes two gag lever posts (23), two gag lever post (23) be located the coplanar and all with organism (1) fixed connection, spacing groove (24) have all been seted up along the horizontal direction at the both ends that gag lever post (23) is relative, the upper end of spacing groove (24) and keep away from the one end of organism (1) is the opening setting, the both ends that holding ring (25) are relative all in spacing groove (24) with gag lever post (23) butt.

3. The portable cement fineness negative pressure screen analyzer of claim 1, characterized in that: support frame (6) are along horizontal direction fixedly connected with guide bar (8), guide bar (8) are located cyclone (2) with between organism (1), guide bar (8) are square pole, two movable block (7) are all overlapped and are located week side of guide bar (8), just movable block (7) with guide bar (8) adaptation that slides.

4. The portable cement fineness negative pressure screen analyzer of claim 3, characterized in that: the adjusting part comprises a driving block (11) and two movable rods (14), a support frame (6) is fixedly connected with a positioning plate (12), the driving block (11) is vertically connected with the positioning plate (12) in a sliding mode, the movable rods (14) are respectively connected with the two movable blocks (7) in a hinged mode to form a first shaft (15) and a second shaft (16), the movable rods (14) are respectively connected with the driving block (11) in a hinged mode to form a second shaft (16), the first shaft (15) is connected with the second shaft (16) in an axial mode, and the horizontal direction is arranged along the axial direction of the second shaft (16), and a fixing part is arranged between the driving block (11) and the positioning plate (12).

5. The portable cement fineness negative pressure screen analyzer of claim 4, characterized in that: the locating plate (12) is along vertical direction seting up spout (13) of T shape, both ends along vertical direction of spout (13) are closed setting, driving block (11) fixedly connected with slider, the slider with spout (13) adaptation that slides.

6. The portable cement fineness negative pressure screen analyzer of claim 5, characterized in that: the fixing assembly comprises a fixing block (17) and an inserting block (18), the fixing block (17) is fixedly connected with the driving block (11), the fixing block (17) is abutted to the positioning plate (12), the fixing block (17) faces towards the positioning plate (12) and is provided with a connecting hole (19) in a penetrating mode, the inserting block (18) is matched with the connecting hole (19) in a sliding mode, the positioning plate (12) is provided with two inserting grooves (20), the two inserting grooves (20) are distributed vertically in the same vertical direction respectively, the inserting block (18) is matched with the inserting grooves (20) in an inserting mode, and an elastic piece is arranged between the inserting block (18) and the fixing block (17).

7. The portable cement fineness negative pressure screen analyzer of claim 6, characterized in that: the elastic component sets up to elastic rubber strip (21), plug block (18) are kept away from the mounting hole has been seted up to the one end of locating plate (12), elastic rubber strip (21) wear to locate the mounting hole just the both ends of elastic rubber strip (21) all with fixed block (17) fixed connection.

8. The portable cement fineness negative pressure screen analyzer of claim 1, characterized in that: the connecting piece is arranged to be a quick connector (5), and the quick connector (5) is installed at the end part of the first vent pipe (3).

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