A dust treatment device for a manufacturing workshop

Abstract

The present invention discloses a dust treatment device for a manufacturing workshop, which includes a filtering and separating dust removal device and a blower. The blower includes a housing, a centrifugal impeller, an inlet connecting pipe, and a rotating shaft. A multi-stage blade group is arranged in the inlet connecting pipe upstream of the centrifugal impeller. The present invention is characterized in that each stage of the blade group includes a stationary blade and a moving blade. In the axial direction, the projection positions of the stationary blades and the moving blades of each stage in the axial direction are roughly aligned, the inner periphery of each stage of the stationary blades is tilted relative to the axis of the rotating shaft, the outer periphery of each stage of the moving blades is tilted relative to the axis of the rotating shaft, and a guide gap is formed between the inner periphery of each stage of the stationary blades and the outer periphery of the moving blades. The present invention can reduce the turbulence at the inlet of the blower, and can increase the air intake at the inlet of the blower, so as to ensure the stability of the output air volume of the blower and increase the air output, so as to improve the dust treatment effect and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic product manufacturing equipment and manufacturing process, and in particular to a dust treatment device for a manufacturing workshop. Background Art

[0002] The existing dust treatment device in the manufacturing workshop includes a filtering and separating dust removal device and a blower. The filtering and separating dust removal device is connected to the manufacturing workshop through a pipeline, and the other end of the filtering and separating dust removal device is connected to the blower through a pipeline. The lower end of the filtering and separating dust removal device is provided with a collecting hopper and a collecting barrel. The filtering and separating dust removal device is used to filter, separate, collect and process the dust in the manufacturing workshop; the blower includes a housing, a centrifugal impeller, an inlet connecting pipe, and a rotating shaft. The centrifugal impeller is installed on the rotating shaft and arranged in the housing. The inlet connecting pipe is installed at the air inlet of the housing. A multi-stage blade group is arranged in the inlet connecting pipe upstream of the centrifugal impeller. The multi-stage blade group includes N-stage blade groups, N≥3. However, the existing blower still has the problems of turbulence at the blower inlet and unstable output air volume / reduced air volume. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a dust treatment device for a manufacturing workshop, which can reduce the turbulence at the blower inlet and increase the air intake at the blower inlet by designing a multi-stage blade group at the blower inlet, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency. Through the design of the rectifying ring, the connecting hole, and the concave and convex wave portion, the turbulence at the blower inlet can be further reduced, the air intake at the blower inlet can be increased, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A dust treatment device for a manufacturing workshop, comprising a filtering and separating dust removal device (1) and a blower (2), wherein the filtering and separating dust removal device is connected to the manufacturing workshop through a pipeline, and the other end of the filtering and separating dust removal device is connected to the blower through a pipeline, and a collecting hopper and a collecting barrel are arranged at the lower end of the filtering and separating dust removal device; the blower comprises a housing (21), a centrifugal impeller (22), an inlet connecting pipe (23), and a rotating shaft (25), wherein the centrifugal impeller is mounted on the rotating shaft and arranged in the housing, the inlet connecting pipe is mounted at the air inlet of the housing, and a multi-stage blade group (24) is arranged in the inlet connecting pipe upstream of the centrifugal impeller, and the multi-stage blade group comprises N-stage blade groups, N≥3; and characterized in that: each The stage blade group includes stationary blades (26) and moving blades (27), wherein the stationary blades are fixedly connected to the inner wall of the air inlet of the outer shell or the inner wall of the inlet connecting pipe, and the moving blades are installed on the rotating shaft through a torque transmission structure; in the axial direction, the axial projection positions of the stationary blades (26) of each stage are roughly aligned with the moving blades (27), the inner peripheral edge of each stage of the stationary blades is tilted relative to the axis of the rotating shaft, and the outer peripheral edge of each stage of the moving blades is tilted relative to the axis of the rotating shaft, and a guide gap is formed between the inner peripheral edge of each stage of the stationary blades and the outer peripheral edge of the moving blades, and in the direction from the outer shell (21) to the inlet connecting pipe (23), the multiple guide gaps of the multi-stage blade group (24) form a first extension line, and the first extension line is tilted relative to the axis of the rotating shaft.

[0006] Furthermore, the first extension line is inclined relative to the axis of the rotating shaft, and the inclination angle is a, a=3-20°, and the inclination angle a is in an expanded state in the direction from the housing (21) to the inlet connecting pipe (23).

[0007] Furthermore, the moving blades (27) are installed on the rotating shaft through the sleeves (28) on the inner circumference side thereof, the first stage stationary blades (26) are fixedly connected to the inner wall of the air inlet of the outer casing (21), and the remaining stages of stationary blades are installed on the inner circumference wall of the inlet connecting pipe (23) through the lining rings (29) on the outer circumference side thereof, and a positioning adjustment sheet (30) is provided between two adjacent lining rings, and a connecting ring (31) is installed on the outer side of the lining ring at the rightmost end, and the connecting ring is detachably installed on the inner circumference wall of the inlet connecting pipe.

[0008] Furthermore, by installing positioning adjustment pieces (30) of different axial thicknesses and fixing them through a connecting ring (31), the deviation rate of the axial projection position of the multi-stage stationary blades (26) and the moving blades (27) can be adjusted, and the projection position deviation is within 10% of the axial length of the stationary blades or the moving blades.

[0009] Furthermore, the inlet connecting pipe (23) is detachably connected to the outer shell (21), which facilitates the installation, replacement and maintenance of the multi-stage blade assembly (24).

[0010] Furthermore, the centrifugal impeller (22) comprises a front cover plate (33), a rear cover plate (34), and blades (35), wherein a plurality of blades are distributed along the circumferential direction and connected between the front cover plate and the rear cover plate, and a straightening ring (36) is provided at the inlet of the centrifugal impeller, wherein the straightening ring is connected to each blade and the straightening ring is approximately located at a middle position between the front cover plate and the rear cover plate, and wherein one or more connecting holes (37) are provided on the straightening ring, and the connecting holes are used to adjust the pressure on both sides of the straightening ring.

[0011] Furthermore, the leading edge of the blade (35) is provided with a concave-convex wave portion (38), and the concave-convex wave portion extends in the radial direction.

[0012] Furthermore, the trailing edge of the first-stage stationary blade (26) extends into the air inlet of the centrifugal impeller (22), the trailing edge of the first-stage moving blade (27) extends into the air inlet of the centrifugal impeller, and the left end position point of the first-stage guide gap is located radially inward of the right end position point of the straightening ring (36).

[0013] A dust treatment device for a manufacturing workshop of the present invention can reduce the turbulence at the blower inlet and increase the air intake at the blower inlet by designing a multi-stage blade group at the blower inlet, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency. The present invention can further reduce the turbulence at the blower inlet and increase the air intake at the blower inlet by designing a rectifying ring, a connecting hole, and a concave and convex wave portion, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the dust treatment device for the manufacturing workshop of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the blower of the present invention;

[0016] Figure 3 It is a schematic diagram of the structure of the blower of the present invention.

[0017] In the figure: filtering and separating dust removal device 1, blower 2, casing 21, centrifugal impeller 22, inlet connecting pipe 23, multi-stage blade group 24, rotating shaft 25, stationary blade 26, moving blade 27, sleeve 28, lining ring 29, positioning adjustment sheet / ring 30, connecting ring 31, key 32, front cover plate 33, rear cover plate 34, blade 35, straightening ring 36, connecting hole 37, concave and convex wave part 38. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1-3 As shown, a dust treatment device for a manufacturing workshop includes a filtering and separating dust removal device 1 and a blower 2. The filtering and separating dust removal device 1 is connected to the manufacturing workshop through a pipeline, and the other end of the filtering and separating dust removal device 1 is connected to the blower 2 through a pipeline. The lower end of the filtering and separating dust removal device 1 is provided with a collecting hopper and a collecting barrel. The filtering and separating dust removal device 1 is used to filter, separate, and collect dust in the manufacturing workshop; the blower 2 includes a housing 21, a centrifugal impeller 22, an inlet connecting pipe 23, and a rotating shaft 25. The centrifugal impeller 22 is installed on the rotating shaft 25 and arranged in the housing 21. The inlet connecting pipe 23 is installed at the air inlet of the housing 21 and is detachably connected to the housing 21. A multi-stage blade group 24 is provided in the inlet connecting pipe 23 upstream of the centrifugal impeller 22. The multi-stage blade group 24 includes N-stage blade groups, N ≥ 3; its characteristics The invention is that: each stage of blade group includes stationary blades 26 and moving blades 27, the stationary blades 26 are fixedly connected to the inner wall of the air inlet of the outer shell 21 or the inner wall of the inlet connecting pipe 23, and the moving blades 27 are installed on the rotating shaft 25 through a torque transmission structure (such as a key); in the axial direction, the axial projection positions of the stationary blades 26 and the moving blades 27 of each stage are roughly aligned (the projection position deviation is within 10% of the axial length of the stationary blades 26 or the moving blades 27), the inner periphery of each stage of stationary blades 26 is inclined relative to the axis of the rotating shaft, the outer periphery of each stage of moving blades 27 is inclined relative to the axis of the rotating shaft, a guide gap / sealing gap is formed between the inner periphery of each stage of stationary blades 26 and the outer periphery of the moving blades 27, and in the direction from the outer shell 21 to the inlet connecting pipe 23, multiple guide gaps / sealing gaps of the multi-stage blade group 24 form a first extension line, and the first extension line is inclined relative to the axis of the rotating shaft.

[0021] The first extension line is inclined relative to the axis of the rotating shaft, and the inclination angle is a, a=5-15°, preferably 10°; and in the direction from the housing 21 to the inlet connecting pipe 23, the inclination angle a is in an expanding state.

[0022] A dust treatment device for a manufacturing workshop of the present invention can reduce turbulence at the blower inlet and increase the air intake at the blower inlet by designing a multi-stage blade group 24 at the blower inlet, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency.

[0023] Further, the moving blade 27 is installed on the rotating shaft 25 through the sleeve 28 on the inner circumference side thereof, the first stage stationary blade 26 is fixedly connected to the inner wall of the air inlet of the housing 21, and the remaining stages of stationary blades 26 are installed on the inner circumference wall of the inlet connecting pipe 23 through the liner ring 29 on the outer circumference side thereof, and a positioning adjustment sheet / ring 30 is provided between two adjacent liner rings 29, and a connecting ring 31 (such as a threaded connecting ring) is installed on the outer side of the rightmost liner ring 29, and the connecting ring 31 is detachably installed on the inner circumference wall of the inlet connecting pipe 23. The present invention can adjust the deviation rate of the projection position of the multi-stage stationary blades 26 and the moving blades 27 in the axial direction by installing positioning adjustment sheets / rings 30 of different axial thicknesses and fixing them through the connecting ring 31, but the projection position deviation is within 10% of the axial length of the stationary blade 26 or the moving blade 27, preferably within 5%.

[0024] The inlet connecting pipe 23 is detachably connected to the outer shell 21 , so as to facilitate the installation, replacement and maintenance of the multi-stage blade set 24 .

[0025] Furthermore, the centrifugal impeller 22 includes a front cover plate 33, a rear cover plate 34, and blades 35. The plurality of blades 35 are evenly distributed along the circumference and connected between the front cover plate 33 and the rear cover plate 34. A straightening ring 36 is provided at the inlet of the centrifugal impeller 22. The straightening ring 36 is connected to each blade 35 and is approximately located in the middle position between the front cover plate 33 and the rear cover plate 34. One or more connecting holes 37 are opened on the straightening ring 36, and the connecting holes 37 are used to adjust the pressure on both sides of the straightening ring 36.

[0026] The leading edge of the blade 35 is provided with a concave-convex wave portion 38, and the concave-convex wave portion 38 extends radially. The present invention can further reduce the turbulence at the blower inlet through the design of the rectifying ring 36, the connecting hole 37, and the concave-convex wave portion 38, and can increase the air intake at the blower inlet, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency.

[0027] The trailing edge of the first-stage stationary blade 26 extends into the air inlet of the centrifugal impeller 22, and the trailing edge of the first-stage moving blade 27 extends into the air inlet of the centrifugal impeller 22. The left end position point of the first-stage guide gap / sealing gap is located radially inside the right end position point of the straightening ring 36.

[0028] A dust treatment device for a manufacturing workshop of the present invention can reduce the turbulence at the blower inlet and increase the air intake at the blower inlet by designing a multi-stage blade group at the blower inlet, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency. The present invention can further reduce the turbulence at the blower inlet and increase the air intake at the blower inlet by designing a rectifying ring, a connecting hole, and a concave and convex wave portion, thereby ensuring the stability of the blower output air volume and increasing the air output volume, thereby improving the dust treatment / purification effect and efficiency.

[0029] The above-mentioned implementation modes are for explanation of the present invention rather than limitation of the present invention. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dust treatment device for a manufacturing workshop, comprising a filtering and separating dust removal device (1) and a blower (2), wherein the filtering and separating dust removal device is connected to the manufacturing workshop through a pipeline, and the other end of the filtering and separating dust removal device is connected to the blower through a pipeline, and a collecting hopper and a collecting barrel are arranged at the lower end of the filtering and separating dust removal device; the blower comprises a housing (21), a centrifugal impeller (22), an inlet connecting pipe (23), and a rotating shaft (25), wherein the centrifugal impeller is mounted on the rotating shaft and arranged in the housing, the inlet connecting pipe is mounted at the air inlet of the housing, and a multi-stage blade group (24) is arranged in the inlet connecting pipe upstream of the centrifugal impeller, and the multi-stage blade group comprises N-stage blade groups, where N ≥ 3; Features: Each stage of the blade group includes a stationary blade (26) and a moving blade (27), wherein the stationary blade is fixedly connected to the inner wall of the air inlet of the housing or the inner wall of the inlet connecting pipe, and the moving blade is installed on the rotating shaft through a torque transmission structure; in the axial direction, the axial projection positions of the stationary blade (26) and the moving blade (27) of each stage are roughly aligned, the inner peripheral edge of each stage of the stationary blade is tilted relative to the axis of the rotating shaft, and the outer peripheral edge of each stage of the moving blade is tilted relative to the axis of the rotating shaft, and a guide gap is formed between the inner peripheral edge of each stage of the stationary blade and the outer peripheral edge of the moving blade, and in the direction from the housing (21) to the inlet connecting pipe (23), the multiple guide gaps of the multi-stage blade group (24) form a first extension line, and the first extension line is tilted relative to the axis of the rotating shaft.

2. A dust treatment device for a manufacturing workshop as claimed in claim 1, characterized in that: The first extension line is arranged to be inclined relative to the axis of the rotating shaft, with an inclination angle a, a=3-20°, and in the direction from the outer shell (21) to the inlet connecting pipe (23), the inclination angle a is in an expanding state.

3. A dust treatment device for a manufacturing workshop as claimed in claim 2, characterized in that: The moving blades (27) are mounted on the rotating shaft via a sleeve (28) on the inner circumference side thereof, the first stage stationary blades (26) are fixedly connected to the inner wall of the air inlet of the outer casing (21), and the remaining stages of stationary blades are mounted on the inner circumference wall of the inlet connecting pipe (23) via a liner ring (29) on the outer circumference side thereof, and a positioning adjustment sheet (30) is provided between two adjacent liner rings, and a connecting ring (31) is installed on the outer side of the rightmost liner ring, and the connecting ring is detachably mounted on the inner circumference wall of the inlet connecting pipe.

4. A dust treatment device for a manufacturing workshop as claimed in claim 3, characterized in that: By installing positioning adjustment pieces (30) of different axial thicknesses and fixing them via a connecting ring (31), the deviation rate of the axial projection positions of the multi-stage stationary blades (26) and the moving blades (27) can be adjusted, and the projection position deviation is within 10% of the axial length of the stationary blades or the moving blades.

5. A dust treatment device for a manufacturing workshop as claimed in claim 4, characterized in that: The inlet connecting pipe (23) is detachably connected to the outer shell (21), which facilitates the installation, replacement and maintenance of the multi-stage blade assembly (24).

6. A dust treatment device for a manufacturing workshop as claimed in claim 1 or 4, characterized in that: The centrifugal impeller (22) comprises a front cover plate (33), a rear cover plate (34), and blades (35), wherein a plurality of blades are distributed along the circumferential direction and connected between the front cover plate and the rear cover plate, and a straightening ring (36) is provided at the inlet of the centrifugal impeller, wherein the straightening ring is connected to each blade and is approximately located at a middle position between the front cover plate and the rear cover plate, and wherein one or more connecting holes (37) are provided on the straightening ring, and the connecting holes are used to adjust the pressure on both sides of the straightening ring.

7. A dust treatment device for a manufacturing workshop as claimed in claim 6, characterized in that: The leading edge of the blade (35) is provided with a concave-convex wave portion (38), which extends in the radial direction.

8. A dust treatment device for a manufacturing workshop as claimed in claim 7, characterized in that: The trailing edge of the first-stage stationary blade (26) extends into the air inlet of the centrifugal impeller (22), the trailing edge of the first-stage moving blade (27) extends into the air inlet of the centrifugal impeller, and the left end position point of the first-stage guide gap is located radially inward of the right end position point of the rectification ring (36).

Images