CN210674867U

CN210674867U - Mixing machine

Info

Publication number: CN210674867U
Application number: CN201920941053.1U
Authority: CN
Inventors: 吴国辉; 袁龙城; 黄飞雁; 黄建; 兰应飞
Original assignee: Guangzhou Lingong Machinery Co ltd
Current assignee: Guangdong Forestry Industrial Equipment Co ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-06-05
Anticipated expiration: 2029-06-20

Abstract

The utility model provides a mixer, including barrel, (mixing) shaft and axle seal spare, the axle seal spare is fixed in the both ends of barrel, the both ends of (mixing) shaft wear out from the barrel and with axle seal spare sealing connection, and the (mixing) shaft rotates with the barrel to be connected, the axle seal spare includes packing box, filler, gland and air seal ring, the packing box cover is located on the (mixing) shaft, and one end of packing box with barrel fixed connection, the other end is connected with the gland, air seal ring and filler from interior to exterior cover are located in the packing box and the internal diameter of air seal ring is greater than the internal diameter of (mixing) shaft, the packing box is seted up the intake duct, set up the venthole that is linked together with the intake duct in the radial direction of air seal ring; the mixer has the advantages of reasonable structure, high mixing quality, good sealing effect and small maintenance amount.

Description

Mixing machine

Technical Field

The utility model belongs to the technical field of mixing apparatus, concretely relates to mixture quality is high, maintain the mixer that work load is little.

Background

The mixer is a mechanical device which uniformly mixes two or more raw materials by utilizing mechanical force, gravity and the like, or stirs and dries the raw materials, and the application of the mixer relates to a plurality of industries such as chemical industry, medicine, food and the like. The horizontal mixer has the advantages of stable operation, uniform stirring, no stirring dead angle, convenient maintenance and the like, so the horizontal mixer has wider application range. However, the prior art mixing machines have problems in use, particularly in mixing powdered materials: it is known that both ends of the stirring shaft of the mixer extend from both ends inside the cylindrical body in which the raw materials to be mixed are placed and rotate relative to the body, and in order to prevent the raw materials from escaping from the gap between the stirring shaft and the cylindrical body when the mixer is in operation, a shaft seal device is installed, i.e. a seal is formed between the stirring shaft and the cylindrical body by the filler in the shaft seal device. However, when the mixer works, powder still inevitably enters between the stirring shaft and the filler along with the rotation of the stirring shaft of the mixer, and the powder often acts as an abrasive material at the moment, so that on one hand, the axial surface abrasion of the stirring shaft is aggravated, and meanwhile, the abrasion consumption of the filler is accelerated, a sealing device needs to be frequently adjusted to compress the filler to maintain the sealing effect, and the maintenance workload of the mixer during use is increased; on the other hand, filler chips after abrasion fall off are mixed into the raw materials, so that the mixing quality or purity of the raw materials is reduced.

Disclosure of Invention

In view of this, the utility model aims at providing a rational in infrastructure, mix high, the maintenance volume is little mixed machine.

In order to solve the technical problem, the utility model discloses the technical scheme who uses is:

the utility model provides a mixing machine, includes barrel, (mixing) shaft and shaft seal spare, the shaft seal spare is fixed in the both ends of barrel, the both ends of (mixing) shaft wear out in the barrel and with shaft seal spare sealing connection, and the (mixing) shaft rotates with the barrel to be connected, the shaft seal spare includes stuffing box, filler, gland and air seal ring, the stuffing box cover is located on the (mixing) shaft, and the one end of stuffing box with barrel fixed connection, the other end are connected with the gland, air seal ring and filler from interior to exterior are located in the stuffing box and the internal diameter of air seal ring is greater than the internal diameter of (mixing) shaft, the intake duct has been seted up on the stuffing box, set up the venthole that is linked together with the intake duct in the radial direction of air.

Preferably, the outer wall of the air seal ring is annularly provided with a first groove, and the first groove is communicated with the air inlet channel and the air outlet hole respectively.

Preferably, a second groove is annularly arranged on the inner wall of the air seal ring, and the second groove is communicated with the air outlet hole.

Preferably, the air outlet holes are formed in a plurality, and the air outlet holes are annularly formed along the circumferential direction of the air seal ring.

Preferably, the stirring shaft is provided with stirring blades, the stirring blades are arranged along the length direction of the stirring shaft, the stirring blades are fixedly connected with the stirring shaft, and the stirring blades are spirally arranged.

Preferably, the stirring device further comprises a frame and a driving device, the barrel and the driving device are both connected with the frame, and the driving device is used for driving the stirring shaft to rotate.

Preferably, the driving device comprises a motor, a driving wheel and a driven wheel, the motor is fixedly connected with the rack, the driving wheel is connected with a driving shaft of the motor, the driven wheel is connected with the stirring shaft, and the driving wheel is in transmission connection with the driven wheel.

Preferably, the motor is a reduction motor.

Preferably, the bottom of the barrel is provided with a discharge valve, and the discharge valve is fixedly connected with the barrel.

Preferably, the top of the cylinder body is provided with a cover plate, and the cover plate can be rotationally covered on the cylinder body.

The beneficial effects of the utility model are mainly embodied in that: because the air seal ring and the air inlet channel matched with the air seal ring are arranged in the stuffing box of the shaft sealing device, when compressed air enters the air seal ring along the air inlet channel, the inner diameter of the air seal ring is larger than the outer diameter of the stirring shaft, so that the compressed air can flow along the gap between the air seal ring and the stirring shaft to form a circle of air film; meanwhile, the filling materials are prevented from entering the mixer, so that the mixing quality or purity of the raw materials is effectively guaranteed.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic structural diagram of a mixing machine according to the present invention;

fig. 2 is a partially enlarged view of a in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the illustrated embodiments are not intended to limit the present invention, and in the present embodiments, it is understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and only describe the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention; in addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a welding fixing manner, a pin fixing manner, or the like, which is commonly used in the prior art, and therefore, detailed description thereof is omitted in this embodiment.

As shown in fig. 1-2, the embodiment provides a mixing machine, which includes a barrel 1, a stirring shaft 2 and a shaft sealing element 3, wherein an opening is formed at the top of the barrel 1, the barrel 1 is used for placing raw materials to be mixed, the shaft sealing element 3 is fixed at two ends of the barrel 1, two ends of the stirring shaft 2 penetrate out of the barrel 1 and are in sealing connection with the shaft sealing element 3, two ends of the stirring shaft 2 and the barrel 1 form a rotating connection through a bearing seat 4, wherein the bearing seat 4 and the barrel 1 are fixed through a bolt, and the stirring shaft 2 is in interference fit with a bearing. The shaft sealing element 3 comprises a stuffing box 31, a stuffing 32, a gland 33 and an air seal ring 34, wherein the stuffing box 31 is sleeved outside the stirring shaft 2, one end of the stuffing box 31 is fixed with the barrel 1 through a bolt, the other end of the stuffing box 31 is connected with the gland 33 through a bolt, the air seal ring 34 and the stuffing 32 are sleeved in the stuffing box 31 from inside to outside, an air inlet channel 35 is formed in the stuffing box 31, and an air outlet hole 36 communicated with the air inlet channel 35 is formed in the radial direction of the air seal ring 34. Wherein the inner diameter of the gas seal ring 34 is slightly larger than the inner diameter of the stirring shaft 2, which helps to form an annular gas flow channel between the gas seal ring 34 and the stirring shaft 2. When the mixer is used, compressed air is introduced from the air inlet channel 35 of the shaft sealing element 3, the compressed air flows from the air inlet channel 35 and flows out through the air outlet hole 36 of the air seal ring 34, and because the inner diameter of the air seal ring 34 is slightly larger than that of the stirring shaft 2, an annular air film is formed between the stirring shaft 2 and the air seal ring 34 by the compressed air flowing out through the air outlet hole 36, and the air film prevents powder in the barrel body 1 from entering the shaft sealing device. The packing 32 on the side of the air seal ring 34 prevents the compressed air from flowing out of the cylinder, i.e., reduces the consumption of the compressed air. Meanwhile, under the condition that air sealing cannot be formed, basic sealing can be maintained by virtue of the filler so as to avoid the escape of powder in the barrel body 1.

In the preferred embodiment, as shown in fig. 2, the air seal ring 34 has a first groove 37 on the outer wall thereof, and the first groove 37 is communicated with the inlet 35 and the outlet 36, respectively. The first groove 37 can prevent the air inlet channel 35 and the air outlet holes 36 from being mutually corresponding to form an air flow channel, especially when the air outlet holes 36 are multiple, the first groove 37 and the inner wall of the stuffing box 31 are mutually matched to form a main channel, and compressed air flows out of each air outlet hole 36 after passing through the main channel. The air outlet holes 36 are opened in a plurality of numbers, such as 4, 8 or more, the air outlet holes 36 are arranged in a circle along the circumferential direction of the air seal ring 34, and the opened air outlet holes 36 help the compressed air to form an annular air film when flowing out from the gap between the air seal ring 34 and the stirring shaft 2. The inner wall of the gas seal ring 34 is annularly provided with a second groove 38, the second groove 38 is communicated with the air outlet holes 36, and compressed air coming out from the air outlet holes 36 can be firstly diffused in the second groove 38 and then flows out from a gap between the gas seal ring 34 and the stirring shaft 2.

As shown in fig. 1, in a preferred embodiment, a stirring blade 5 is arranged on the stirring shaft 2, the stirring blade 5 is arranged along the length direction of the stirring shaft 2, the stirring blade 5 and the stirring shaft 2 are fixed by bolts, and the stirring blade 5 is spirally arranged; the spiral stirring blade 5 can enable the raw materials to form more vortexes in the stirring process, accelerate the mixing speed and improve the mixing uniformity.

As shown in fig. 1, in a preferred embodiment, the stirring device further comprises a frame 6 and a driving device 7, the barrel 1 and the frame 6 are fixed by welding or bolts, the driving device 7 is connected with the frame 6, and the driving device 7 is used for driving the stirring shaft 2 to rotate. The driving device 7 comprises a motor 71, a driving wheel 72 and a driven wheel 73, the motor 71 is fixed with the frame 6 through bolts, and the motor 71 is a speed reducing motor; the driving wheel 72 is fixed with the driving shaft of the motor 71 through a pin key, the driven wheel 73 is fixed with the stirring shaft 2 through a pin key, and the driving wheel 72 and the driven wheel 73 are in transmission connection through a transmission belt.

In the preferred embodiment, as shown in fig. 1, the bottom of the barrel 1 is communicated with a discharge valve 8, and the discharge valve 8 is fixed with the barrel 1 through bolts. The top of the cylinder body 1 is provided with a cover plate 9, and the cover plate 9 can be rotationally covered on the cylinder body 1.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a mixing machine, includes barrel, (mixing) shaft and shaft seal spare, shaft seal spare is fixed in the both ends of barrel, wear out and be connected its characterized in that with shaft seal spare sealing connection in the both ends of (mixing) shaft are followed the barrel: the shaft seal spare includes stuffing box, filler, gland and gas seal ring, the stuffing box cover is located on the (mixing) shaft, and the one end of stuffing box with barrel fixed connection, the other end is connected with the gland, gas seal ring and filler from interior to exterior cover are located in the stuffing box and the internal diameter of gas seal ring is greater than the internal diameter of (mixing) shaft, the intake duct has been seted up on the stuffing box, the venthole that is linked together with the intake duct has been seted up in the radial direction of gas seal ring.

2. The mixing machine of claim 1, wherein: the outer wall of the air seal ring is provided with a first groove in an encircling manner, and the first groove is communicated with the air inlet channel and the air outlet hole respectively.

3. The mixing machine of claim 2, wherein: and a second groove is annularly arranged on the inner wall of the air seal ring and communicated with the air outlet hole.

4. The mixing machine of claim 3, wherein: the air outlet holes are formed in multiple numbers and are annularly formed in the circumferential direction of the air seal ring.

5. The mixing machine of claim 1, wherein: the stirring shaft is provided with stirring blades, the stirring blades are arranged along the length direction of the stirring shaft and fixedly connected with the stirring shaft, and the stirring blades are spirally arranged.

6. The mixing machine of claim 1, wherein: the stirring shaft is characterized by further comprising a rack and a driving device, wherein the barrel and the driving device are connected with the rack, and the driving device is used for driving the stirring shaft to rotate.

7. The mixing machine of claim 6, wherein: the driving device comprises a motor, a driving wheel and a driven wheel, the motor is fixedly connected with the rack, the driving wheel is connected with a driving shaft of the motor, the driven wheel is connected with the stirring shaft, and the driving wheel is in transmission connection with the driven wheel.

8. The mixing machine of claim 7, wherein: the motor is a speed reducing motor.

9. The mixing machine of claim 1, wherein: the bottom of barrel is provided with the baiting valve, baiting valve and barrel fixed connection.

10. The mixing machine of claim 9, wherein: the top of barrel is provided with the apron, the rotatable lid of apron closes on the barrel.