Microcrystalline cellulose vibration sieving device

Abstract

The utility model relates to the technical field of microcrystalline cellulose screening, in particular to a microcrystalline cellulose vibration screening device which comprises a main machine body and a screening frame assembly installed on the main machine body, and the screening frame assembly comprises a first screening frame, a second screening frame and a third screening frame. The first screening frame, the second screening frame and the third screening frame are further connected with discharging ports used for discharging, corrugated pipes are fixed to the bottoms of the discharging ports, screen assemblies used for screening are installed in the first screening frame and the second screening frame, and each screen assembly comprises a fixing ring and a screen body. According to the magnetic screen, a bolt connection mode adopted in the prior art is replaced by a magnetic attraction connection mode, so that the screen body is easy to disassemble, and the screen body can be taken out only by pulling the screen body by a worker.

Description

TECHNICAL FIELD

[0001] The utility model relates to microcrystalline cellulose screening technical field, concretely to a microcrystalline cellulose vibrating screening device. BACKGROUND

[0002] Microcrystalline cellulose is white or off-white fine crystalline powder, selects high-quality natural fiber raw material, such as wood pulp, bamboo pulp, cotton pulp, carries out soaking, beating etc. to the raw material, makes it reach suitable viscosity and fiber length, carries out hydrolysis treatment to the pretreated fiber raw material, obtains cellulose slurry. Then, through the steps such as filtration, purification, remove impurities, obtain pure cellulose slurry, carry out spray drying to the purified cellulose slurry, obtain porous dry microcrystalline cellulose. Through the control of spray and drying conditions, the microcrystalline cellulose of different particle size distribution can be obtained, and then the screening is carried out through the vibrating screen equipment.

[0003] Chinese patent CN220461265U discloses a kind of microcrystalline cellulose vibrating screening device including sieve barrel, the sieve barrel is made of multiple sieve frame, annular frame is fixed in the inner wall of sieve frame, sieve net is arranged on the upper end of annular frame, the top of sieve barrel is equipped with dust cover, the center of dust cover is penetrated with feed inlet, the bottom end of sieve barrel is connected with bottom bucket by damping spring.

[0004] In the above structure, the bolts in the upper and lower bundles of the corresponding sieve frame need to be disassembled, the corresponding sieve frame of the sieve net is split, then the limiting rod is rotated until the limiting head is separated from the limiting hole, at this time, the net rack is separated from the sieve frame, and the sieve net is pulled upward by hand holding the handle. This way needs to use wrench or screwdriver, and needs additional tools. If there is no tool, the internal sieve net cannot be disassembled, which makes it inconvenient to replace the sieve net. Utility model content

[0005] The utility model aims at providing a kind of microcrystalline cellulose vibrating screening device, by adopting the mode of magnetic attraction connection, instead of the mode of bolt connection of prior art, so that the sieve net body is disassembled simply, and only needs to pull the sieve net body by staff to take out the sieve net body.

[0006] To solve the prior art problems, the utility model provides a kind of microcrystalline cellulose vibration screening device, including main body and install the screening frame assembly of main body, the screening frame assembly includes the first screening frame, second screening frame and third screening frame of same structure, and first screening frame, second screening frame and third screening frame are also connected with the discharge port for discharging, the bottom of discharge port is fixed with bellows, screening frame and second screening frame are installed with screen assembly for screening, the screen assembly includes fixed ring and screen body, fixed ring is fixed in the bottom of first screening frame and second screening frame, and fixed ring is distributed with several magnetic sleeves, and the bottom of screen body is distributed with several magnetic columns, and magnetic column is inserted into magnetic sleeve.

[0007] Preferably, the two sides of the top of the screen body are fixed with handles for conveniently taking out the screen assembly by bolts, and the screen hole diameter on the screen body in the first screening frame is greater than the screen hole on the screen body in the second screening frame.

[0008] Preferably, the main body further includes a base for supporting and a bottom body, and the bottom body is arranged at the bottom of the third screening frame.

[0009] Preferably, the top of the base is further provided with a guide rod, the outside of the guide rod is sleeved with a spring, the bottom inside the bottom body is fixed with a sleeve, the sleeve is sleeved on the guide rod, one end of the spring is connected with the bottom end of the sleeve, the other end of the spring is connected on the base, and a boss is further fixed at the center position of the top of the bottom body.

[0010] Preferably, the center position of the base is further provided with a vibration mechanism for driving the main body to vibrate, and the vibration mechanism includes a rotary driving member, the rotary driving member passes through the base and is fixed on the base by bolts, and the two output ends of the rotary driving member are connected with rotary discs.

[0011] Preferably, a plurality of clamping grooves are formed on the rotary disc, and counterweights are embedded in the clamping grooves, and the counterweights are fixed on the rotary disc by bolts.

[0012] Preferably, the main body is further provided with a fixing device for fixing the first screening frame, the second screening frame, the third screening frame and the bottom body, the fixing device includes an elastic clamp, a limiting groove is formed at the center position of the elastic clamp and is adapted to the edge of the first screening frame, the second screening frame and the third screening frame, a screw is screwed on the elastic clamp, and a butterfly nut is screwed on the screw.

[0013] Preferably, a top cover is arranged at the top of the screening frame assembly, and an inlet is arranged at the top of the top cover for feeding.

[0014] Compared with the prior art, the microcrystalline cellulose vibration screening device has the following advantages:

[0015] (1) By installing a magnetic sleeve on the fixed ring and a magnetic column on the screen body, only the magnetic column needs to be inserted into the magnetic sleeve for fixation. When the screen body needs to be replaced, only the handle needs to be pulled to take out the screen body, solving the problem of the need for tools and inconvenience in disassembling the screen body in the traditional way.

[0016] (2) By setting the vibration mechanism, rotating disc and clamping groove, the device can adjust the vibration amplitude of the device. When the device needs to change the amplitude, only the counterweight of different weights and the number of counterweights need to be installed to change the amplitude of the device.

[0017] (3) By setting the elastic clamp, screw and butterfly nut, the device can assemble the required screening times according to the needs. Different numbers of first, second and third screening frames are matched according to the needs, and the elastic clamp can fix each screening frame, so that the device can be freely assembled and is more practical. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure diagram of a microcrystalline cellulose vibrating screening device.

[0019] Figure 2 It is an exploded structure diagram of a microcrystalline cellulose vibrating screening device.

[0020] Figure 3 It is a cross-sectional structure diagram of a microcrystalline cellulose vibrating screening device.

[0021] Figure 4 It is a three-dimensional structure diagram of a vibrating mechanism of a microcrystalline cellulose vibrating screening device.

[0022] Figure 5 It is a three-dimensional structure diagram of a screen assembly of a microcrystalline cellulose vibrating screening device.

[0023] Figure 6 It is an exploded structure diagram of a screen assembly of a microcrystalline cellulose vibrating screening device.

[0024] The figure mark is: 1, main body; 11, top cover; 111, feeding port; 12, screening frame assembly; 121, first screening frame; 122, second screening frame; 123, third screening frame; 13, fixing device; 131, elastic clamp; 132, screw rod; 133, butterfly nut; 14, base; 141, guide rod; 142, spring; 15, bottom body; 151, boss; 152, sleeve; 16, vibrating mechanism; 161, rotary driving piece; 162, rotary disc; 1621, clamping groove; 163, counterweight; 17, screen assembly; 171, fixing ring; 1711, magnetic sleeve; 172, handle; 173, screen body; 1731, magnetic column; 18, bellows. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model is described in further detail below in combination with the drawings and specific embodiments.

[0026] Referring to Figures 1-6 The utility model provides: a kind of microcrystalline cellulose vibrating screening device, including main body 1 and the screening frame assembly 12 installed on main body 1, screening frame assembly 12 includes the first screening frame 121, second screening frame 122 and third screening frame 123 of same structure, each layer screening frame is responsible for the separation of microcrystalline cellulose of different granularity, realize multistage screening, and first screening frame 121, second screening frame 122 and third screening frame 123 are also connected with the discharge port for discharging, the bottom of discharge port is fixed with bellows 18, the design of bellows 18 not only can be connected with other equipment, still can keep the flexibility of discharge port in vibrating process, ensure that material flows out smoothly, first screening frame 121 and second screening frame 122 are installed with screen assembly 17 for screening, screen assembly 17 includes fixing ring 171 and screen body 173, fixing ring 171 is fixed at the bottom of first screening frame 121 and second screening frame 122, and fixing ring 171 is distributed with several magnetic sleeves 1711, and the bottom of screen body 173 is distributed with several magnetic columns 1731, magnetic column 1731 is inserted into magnetic sleeve 1711, this kind of magnetic attraction connection mode not only facilitates the quick installation and disassembly of screen body 173, facilitates cleaning and maintenance, can also effectively reduce the displacement of screen body 173 in vibrating process, screen body 173 is made of wear-resistant, corrosion-resistant high-performance material, with good filtering effect and longer service life.

[0027] Two sides of the top of the screen body 173 are fixed with handles 172 for conveniently taking out the screen assembly 17 by bolts, the screen hole diameter on the screen body 173 in the first screening frame 121 is larger than that on the screen body 173 in the second screening frame 122, when the microcrystalline cellulose passes through the first screening frame 121, the larger particles are screened out, and the smaller particles continue to enter the second screening frame 122 for further screening, and so on until the required particle size distribution is reached.

[0028] When it is necessary to replace the screen body 173, the screen body 173 can be taken out by pulling the handle 172, solving the problems of needing tools and being inconvenient to disassemble the screen body 173 in the prior art.

[0029] The main body 1 further comprises a base 14 for supporting and a bottom body 15 arranged above the base 14, the bottom body 15 is arranged at the bottom of the third screening frame 123, the top of the base 14 is further provided with a guide rod 141, the outside of the guide rod 141 is sleeved with a spring 142, the inside of the bottom body 15 is fixed with a sleeve 152, the sleeve 152 is sleeved on the guide rod 141, one end of the spring 142 and the bottom end of the sleeve 152 are connected with each other, the other end of the spring 142 is connected to the base 14, and the top of the bottom body 15 is further fixed with a boss 151 at the center position.

[0030] The center position of the base 14 is further provided with a vibration mechanism 16 for vibrating the main body 1, the vibration mechanism 16 comprises a rotary driving piece 161, the rotary driving piece 161 passes through the base 14 and is fixed to the base 14 by bolts, two output ends of the rotary driving piece 161 are connected with a rotary disc 162, a plurality of clamping grooves 1621 are arranged on the rotary disc 162, counterweights 163 are inlaid in the clamping grooves 1621, and the counterweights 163 are fixed to the rotary disc 162 by bolts.

[0031] The design of the clamping grooves 1621 allows flexible installation and adjustment of the counterweights 163. The counterweights 163 are fixed to the clamping grooves 1621 of the rotary disc 162 by bolts, when the rotary driving piece 161 drives the rotary disc 162 to rotate, the centrifugal force generated by the counterweights 163 will be converted into vibration energy and transmitted to the main body 1, so as to realize vibration screening of the screening frame assembly 12.

[0032] The host body 1 is further provided with a fixing device 13 for fixing the first screening frame 121, the second screening frame 122, the third screening frame 123 and the bottom body 15, the fixing device 13 comprises an elastic clamp 131, a limiting groove is formed in the center of the elastic clamp 131 and is matched with the edges of the first screening frame 121, the second screening frame 122 and the third screening frame 123, a screw rod 132 is screwed on the elastic clamp 131, and a butterfly nut 133 is screwed on the screw rod 132, the top of the screening frame assembly 12 is provided with a top cover 11, and the top of the top cover 11 is provided with a feeding inlet 111.

[0033] The fixing device 13 is designed in the form of the elastic clamp 131, a limiting groove is formed in the center of the elastic clamp 131 and is matched with the edges of the screening frame, so that the stable installation of the screening frame is ensured. The screw rod 132 and the butterfly nut 133 are screwed on the elastic clamp 131, the screening frame can be easily fixed or released by adjusting the butterfly nut 133, and the replacement and maintenance of the screening frames are facilitated.

[0034] Working principle: in use, the first screening frame 121, the second screening frame 122, the third screening frame 123 and the bottom body 15 are assembled together according to needs, then the elastic clamp 131 is sleeved on the corresponding positions of the screening frames, the screw rod 132 and the butterfly nut 133 are used for fixing, the counterweight 163 is installed on the clamping groove 1621 according to needs, the rotating drive part 161 is started, the rotating disc 162 is driven to rotate by the rotating drive part 161, the device is vibrated, then the material is poured into the feeding inlet 111, the material is filtered by the screen body 173 on the first screening frame 121, the microcrystalline cellulose is filtered by the screen body 173 on the second screening frame 122, and the smallest microcrystalline cellulose falls into the bottom body 15, then the microcrystalline cellulose is discharged from the respective discharge outlets, when the screen body 173 needs to be replaced, the screen body 173 can be taken out by pulling the handle 172, and the problems that tools are needed for the traditional disassembly of the screen body 173 and the disassembly is inconvenient are solved.

[0035] The above embodiment only expresses one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the present application, a plurality of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A microcrystalline cellulose vibrating screening device, characterized in that: The invention comprises a main body (1) and a screening frame assembly (12) installed on the main body (1), wherein the screening frame assembly (12) comprises a first screening frame (121), a second screening frame (122) and a third screening frame (123) having the same structure, and the first screening frame (121), the second screening frame (122) and the third screening frame (123) are further connected with a discharge port for discharging materials, and a bellows (18) is fixed at the bottom of the discharge port, and the first screening frame (121) and the second screening frame (122) are connected with the third screening frame (123) to form a plurality of screen frames. A screen assembly (17) for screening is installed in the frame (122), and the screen assembly (17) includes a fixing ring (171) and a screen body (173). The fixing ring (171) is fixed to the bottom of the first screening frame (121) and the second screening frame (122). A plurality of magnetic sleeves (1711) are distributed on the fixing ring (171), and a plurality of magnetic columns (1731) are distributed at the bottom of the screen body (173). The magnetic columns (1731) are inserted into the magnetic sleeves (1711).

2. The microcrystalline cellulose vibrating screening device according to claim 1, characterized in that: Handles (172) for facilitating removal of the screen assembly (17) are fixed on both sides of the top of the screen body (173) by bolts. The diameter of the screen holes on the screen body (173) in the first screening frame (121) is larger than the diameter of the screen holes on the screen body (173) in the second screening frame (122).

3. The microcrystalline cellulose vibrating screening device according to claim 1, characterized in that: The main body (1) further comprises a base (14) for support and a bottom body (15), wherein the bottom body (15) is arranged at the bottom of the third screening frame (123).

4. The microcrystalline cellulose vibrating screening device according to claim 3, characterized in that: A guide rod (141) is further provided at the top of the base (14), and a spring (142) is sleeved on the outside of the guide rod (141). A sleeve (152) is fixed to the bottom of the bottom body (15), and the sleeve (152) is sleeved on the guide rod (141). One end of the spring (142) is connected to the bottom end of the sleeve (152), and the other end of the spring (142) is connected to the base (14). A boss (151) is further fixed at the center position of the top of the bottom body (15).

5. The microcrystalline cellulose vibrating screening device according to claim 4, characterized in that: A vibration mechanism (16) for driving the main body (1) to vibrate is also provided at the center of the base (14). The vibration mechanism (16) includes a rotary drive member (161). The rotary drive member (161) passes through the base (14) and is fixed to the base (14) by bolts. Two output ends of the rotary drive member (161) are connected to a rotating disk (162).

6. The microcrystalline cellulose vibrating screening device according to claim 5, characterized in that: The rotating disk (162) is provided with a plurality of slots (1621), the slots (1621) are inlaid with counterweights (163), and the counterweights (163) are fixed to the rotating disk (162) by bolts.

7. The microcrystalline cellulose vibrating screening device according to claim 1, characterized in that: The main body (1) is also provided with a fixing device (13) for fixing the first screening frame (121), the second screening frame (122), the third screening frame (123) and the bottom body (15). The fixing device (13) includes an elastic clamp (131). A limiting groove adapted to the edges of the first screening frame (121), the second screening frame (122) and the third screening frame (123) is provided at the center of the elastic clamp (131). A screw (132) is screwed onto the elastic clamp (131), and a butterfly nut (133) is screwed onto the screw (132).

8. The microcrystalline cellulose vibrating screening device according to claim 1, characterized in that: A top cover (11) is provided on the top of the screening frame assembly (12), and a material inlet (111) for feeding is provided on the top of the top cover (11).

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