Dust collection bag mounting structure for mortar fineness negative pressure screen analysis instrument

Abstract

The utility model provides a dust collection bag mounting structure for a mortar fineness negative pressure screen analysis instrument, which relates to the technical field of negative pressure screen analysis instruments, and comprises a screening instrument body, a dust collection mechanism is arranged on the screening instrument body, an outlet pipe of the dust collection mechanism is positioned in the screening instrument body, a hanging shaft is arranged on the outlet pipe, and a frame body and a barrel body are sequentially hung on the hanging shaft in a sleeving manner. A dust collection bag is clamped between the frame body and the barrel body; the dust collection bag is clamped in the middle for dust collection through the frame body and the barrel body, the barrel body is installed in a hook mode, personnel can conveniently disassemble the barrel body, meanwhile, the hook on the frame body can facilitate hanging and taking of a plastic bag, the plastic bag can be conveniently installed on the frame body to play a role of the dust collection bag, and the convenience of replacement of the dust collection bag is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure sieving instruments, in particular to a dust collecting bag installation structure for a negative pressure sieving instrument for mortar fineness. Background Art

[0002] The negative pressure sieving instrument for cement fineness is a device that uses air pressure to sieve powder materials. It generally includes a box, a screen, a cyclone, a vacuum cleaner and a dust collecting bottle; the dust collecting bottle is fixed to the cyclone. When the negative pressure sieving instrument for cement fineness uses airflow as the motive medium for sieving, the entire system maintains a negative pressure state. The fine powder material to be tested in the screen is in a fluid state under the action of the airflow ejected from the rotating air nozzle, and moves with the airflow. The fine particles with a particle size smaller than the screen mesh aperture are driven by the airflow to pass through the screen and are sucked away and enter the dust collecting bottle, while the coarse particles with a particle size larger than the screen mesh aperture remain in the screen to achieve the purpose of screening.

[0003] The existing Chinese patent with authorization announcement number CN208443695U discloses a cement fineness negative pressure screening instrument, and the key points of its technical solution are: it includes an analysis chamber arranged in a housing, a sieve plate arranged in the analysis chamber, and a cyclone cylinder arranged on the housing and communicated with the bottom end of the analysis chamber, the sieve plate is rotatably installed in the analysis chamber through a rotating shaft, the sieve plate is hinged with a first closing plate and a second closing plate on both sides of the rotating shaft, the upper and lower ends of the analysis chamber are provided with slide grooves with different widths at the upper and lower ends, the upper and lower ends of the first closing plate and the second closing plate are respectively slidably sleeved with an upper slider and a lower slider, the upper slider and the lower slider are both slidably installed in the slide groove, and a driving component for driving the sieve plate to reciprocate and rotate at a small angle is arranged in the housing. The above-mentioned cement fineness negative pressure screening instrument has the advantage of improving the accuracy of measurement data of the screening instrument.

[0004] However, the disadvantage is that the above technical solution places the vacuum cleaner in a box, which makes it inconvenient to load and unload the dust bag on the vacuum cleaner. At the same time, the dust bag needs to be specially made and cannot be used with a conventional plastic bag, causing inconvenience. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dust collecting bag installation structure for a mortar fineness negative pressure screening instrument to solve the problem that the dust collecting bag is inconvenient to replace.

[0006] Based on the technical problems existing in the background technology, the utility model proposes a dust bag installation structure for a mortar fineness negative pressure screening instrument, comprising a screening instrument body, a dust suction mechanism is arranged on the screening instrument body, an outlet pipe of the dust suction mechanism is located in the screening instrument body, a hanging shaft is arranged on the outlet pipe, a frame body and a barrel body are hung on the hanging shaft in sequence, and a dust bag is sandwiched between the frame body and the barrel body.

[0007] Preferably, there are two hanging shafts which are arranged at a 180 degree circumference on the outlet pipe.

[0008] Preferably, the frame body comprises an annular frame and a U-shaped frame, and the U-shaped frame and the annular frame are fixed to form a barrel shape.

[0009] Preferably, two ends of one of the U-shaped frames are provided with rings mounted on the hanging shaft, and two ends of the other U-shaped frame are provided with hooks with openings facing upwards.

[0010] Preferably, the dust bag is a plastic bag, which is sleeved on the periphery of the frame and two screw ears of the dust bag are hung on two hooks of the U-shaped frame.

[0011] Preferably, two hooks corresponding to the hanging shafts are arranged at the upper edge of the barrel body, and the length of the hooks is smaller than the distance between the bottom end of the barrel body and the bottom end of the frame body.

[0012] Preferably, a nut is installed on the hanging shaft.

[0013] Preferably, the outlet pipe has an opening located inside the frame.

[0014] Compared with the prior art, the dust bag installation structure for the mortar fineness negative pressure sieve analyzer proposed in the utility model adopts the above technical solution and achieves the following technical effects:

[0015] The utility model uses a frame body and a barrel body to clamp the dust bag in the middle to collect dust. The barrel body is installed in a hook manner, which can be convenient for personnel to disassemble. At the same time, the hook on the frame body can facilitate the hanging and taking of the plastic bag, and the plastic bag is easy to install on the frame body to play the role of the dust bag, thereby improving the convenience of replacing the dust bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the negative pressure sieve analyzer of the utility model;

[0017] Figure 2 This is a schematic diagram of the outlet pipe structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the frame structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the barrel structure of the utility model.

[0020] In the figure: 1, screening instrument body, 2, dust suction mechanism, 21, outlet pipe, 22, hanging shaft, 3, frame, 4, barrel, 31, ring frame, 32, U-shaped frame, 321, ring, 322, hook, 41, hook, 221, nut. DETAILED DESCRIPTION

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Example

[0024] Please refer to Figure 1-Figure 4 The utility model proposes a dust bag installation structure for a mortar fineness negative pressure screening instrument, comprising a screening instrument body 1, a dust collecting mechanism 2 is arranged on the screening instrument body 1, an outlet pipe 21 of the dust collecting mechanism 2 is located in the screening instrument body 1, a hanging shaft 22 is arranged on the outlet pipe 21, a frame 3 and a barrel 4 are hung on the hanging shaft 22 in sequence, and a dust bag is sandwiched between the frame 3 and the barrel 4. In the utility model, the dust bag is installed on the periphery of the frame 3, the frame 3 can support the dust bag to prevent the inner wall of the dust bag from sticking together, and the outside of the dust bag of the barrel 4 can support the dust bag. When debris enters through the outlet pipe 21, the debris will fall into the dust bag, and the outer wall of the dust bag will fit on the barrel 4. When a certain weight is collected, the dust bag can avoid being torn due to the weight support.

[0025] In a specific implementation manner, refer to Figure 2 The hanging shaft 22 has two and is arranged 180 degrees circumferentially on the outlet pipe 21. The hanging shaft 22 in the utility model provides an installation position for the frame 3 and the barrel 4. The frame 3 and the barrel 4 in the utility model are both installed in a hanging manner.

[0026] In a specific implementation manner, refer to Figure 3The frame 3 includes an annular frame 31 and a U-shaped frame 32, and the U-shaped frame 32 and the annular frame 31 are fixed to form a barrel shape. In the utility model, two U-shaped frames 32 are used to reduce the use of materials. The U-shaped frames 32 are fixed by welding and reinforced by multiple annular frames 31.

[0027] In a specific implementation manner, refer to Figure 3 , one U-shaped frame 32 has two ends provided with rings 321 mounted with the hanging shaft 22, and the other U-shaped frame 32 has two ends provided with hooks 322 with openings facing upward. The U-shaped frame 32 in the utility model has two, one U-shaped frame 32 has two ends provided with rings 321, the rings 321 are sleeved on the hanging shaft 22, and the frame body 3 can be installed on the hanging shaft 22, the dust bag in the utility model is a plastic bag, the dust bag is sleeved on the outer periphery of the frame body 3 and the two screw ears of the dust bag are hung on the two hooks 322 of the U-shaped frame 32, and the other U-shaped frame 32 has two ends provided with hooks 322, which can facilitate the plastic bag to be hung on the hooks 322.

[0028] In a specific implementation manner, refer to Figure 1 , Figure 4 Two hooks 41 corresponding to the hanging shaft 22 are arranged at the upper edge of the barrel body 4, and the length of the hook 41 is less than the distance between the bottom end of the barrel body 4 and the bottom end of the frame body 3. The length of the hook 41 allows the barrel body 4 to be lifted upward for disassembly, avoiding the barrel body 4 from colliding with the frame body 3 due to the length of the hook 41 when disassembling the barrel body 4.

[0029] In a specific implementation manner, refer to Figure 1 , Figure 3 A nut 221 is installed on the hanging shaft 22. The nut 221 on the hanging shaft 22 can be used to separate the installation positions of the frame 3 and the barrel 4 to prevent the frame 3 or the barrel 4 from sliding off along the hanging shaft 22.

[0030] In a specific implementation manner, refer to Figure 1 The outlet of the outlet pipe 21 is located in the frame 3, and the outlet pipe 21 is long enough to extend into the dust bag to reduce the amount of debris overflowing from the dust bag.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust bag installation structure for a mortar fineness negative pressure sieving instrument, characterized in that: The invention comprises a screening instrument body (1), wherein a dust collecting mechanism (2) is arranged on the screening instrument body (1), an outlet pipe (21) of the dust collecting mechanism (2) is located inside the screening instrument body (1), a hanging shaft (22) is arranged on the outlet pipe (21), a frame body (3) and a barrel body (4) are hung on the hanging shaft (22) in sequence, and a dust collecting bag is sandwiched between the frame body (3) and the barrel body (4).

2. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 1 is characterized in that: There are two hanging shafts (22) which are arranged on the outlet pipe (21) at a circumference of 180 degrees.

3. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 1 is characterized in that: The frame body (3) comprises an annular frame (31) and a U-shaped frame (32), and the U-shaped frame (32) and the annular frame (31) are fixed to form a barrel shape.

4. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 3 is characterized in that: Rings (321) mounted on the hanging shaft (22) are arranged at both ends of one of the U-shaped frames (32), and hooks (322) with openings facing upward are arranged at both ends of the other U-shaped frame (32).

5. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 4 is characterized in that: The dust bag is a plastic bag, which is sleeved on the periphery of the frame (3) and the two screw ears of the dust bag are hung on the two hooks (322) of the U-shaped frame (32).

6. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 1 is characterized in that: Two hooks (41) corresponding to the hanging shafts (22) are arranged at the upper edge of the barrel body (4), and the length of the hooks (41) is smaller than the distance between the bottom end of the barrel body (4) and the bottom end of the frame body (3).

7. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 1 is characterized in that: A nut (221) is installed on the hanging shaft (22).

8. The dust bag installation structure for the mortar fineness negative pressure sieve analyzer according to claim 1, characterized in that: The outlet pipe (21) has an opening located inside the frame (3).

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