CN113250995A

CN113250995A - Shaft seal device and food processing equipment

Info

Publication number: CN113250995A
Application number: CN202110605251.2A
Authority: CN
Inventors: 贾艳宏
Original assignee: Halifax Fan Shenzhen Co ltd
Current assignee: Halifax Fan Shenzhen Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-08-13

Abstract

The invention belongs to the technical field of food processing equipment, and particularly relates to a sealing device and food processing equipment. The shaft seal device is used in cooperation with a transmission shaft, and the transmission shaft comprises a first end and a second end arranged opposite to the first end. The shaft seal device comprises a shell structure and a flow guide structure. The manifold has been seted up to shell structure, and the mounting hole has all been seted up on the relative both sides surface that sets up of shell structure, and each mounting hole all communicates the manifold, and the transmission shaft wears to establish the manifold, and first end and second end rotate respectively to be set up in two mounting holes. The flow guide structure comprises a flow guide ring positioned in the flow collection cavity, the flow guide ring is sleeved on the transmission shaft and rotates along with the transmission shaft, and the flow guide ring is used for preventing liquid attached to the transmission shaft from flowing towards the second end and guiding the liquid to be separated from the transmission shaft and collected in the flow collection cavity. This application can avoid liquid to take place to leak from the second end, reaches the purpose of liquid seal.

Description

Shaft seal device and food processing equipment

Technical Field

The invention belongs to the technical field of food processing equipment, and particularly relates to a shaft sealing device and food processing equipment.

Background

The food processing equipment drives the motor to rotate through electric energy, drives the impeller to rotate through a transmission shaft of the motor, and generates a medium with flow and pressure by utilizing the rotation of the impeller. The fan has two functional conditions of air suction and air supply. Typically the impeller is placed within a wind housing into which the drive shaft extends and connects the impeller. In order to reduce loss, the air quantity in the air shell is required to be ensured to be prevented from leaking along the transmission shaft as much as possible. The clearance between the rotating drive shaft and the stationary wind housing is as small as possible. However, because there is relative movement between the two, and no frictional interference can occur between the two, then the gas sealing is required, so the concept of "shaft seal" appears, and its function is to seal the gas in the wind casing without leakage.

However, in some food industries, the medium in the wind shell is in powder form (such as in the flour industry), and the wind shell needs to be cleaned regularly in order to prevent bacteria from growing in the wind shell. When cleaning the wind shell, can spout into a large amount of aqueous solutions in to the wind shell, and liquid water can follow the transmission shaft and flow out the wind shell to the risk of revealing takes place, the one end that the transmission shaft is located the wind shell can be followed to the aqueous solution promptly, and the one end of driver is connected to the flow direction transmission shaft, thereby takes place to reveal.

Disclosure of Invention

An object of the embodiment of the present application is to provide a shaft seal device, which aims to solve the problem of how to seal a transmission shaft to prevent liquid from leaking along the transmission shaft.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing a shaft seal device, cooperating with a transmission shaft, wherein the transmission shaft includes a first end and a second end disposed opposite to the first end, the shaft seal device includes:

the transmission shaft penetrates through the manifold, and the first end and the second end are respectively and rotatably arranged in the two mounting holes; and

the flow guide structure comprises a flow guide ring positioned in the collecting cavity, the flow guide ring is detachably sleeved on the transmission shaft and rotates along with the transmission shaft, and the flow guide ring is used for preventing liquid attached to the transmission shaft from flowing towards the second end and guiding the liquid to be separated from the transmission shaft and collected in the collecting cavity.

In one embodiment, the guide ring is provided with a guide surface for guiding the liquid to be separated from the transmission shaft, and the guide surface is arranged towards the first end.

In one embodiment, the flow guide surface is arranged in a conical surface and is inclined towards the second end.

In one embodiment, the flow guiding structure further comprises a flow guiding sleeve, the flow guiding sleeve is connected and sleeved at the second end and penetrates through the corresponding mounting hole, and the flow guiding ring is connected with the flow guiding sleeve.

In one embodiment, the guide ring is provided in plurality, and each guide ring is sequentially arranged at intervals along the axial direction of the guide sleeve.

In one embodiment, the shaft sealing device further includes a vent pipe disposed on the casing structure, and a first plug connected to a free end of the vent pipe, and a lumen of the vent pipe communicates with the manifold.

In one embodiment, the shaft sealing device further includes a drain pipe disposed on the casing structure and a second plug connected to a free end of the drain pipe, a lumen of the drain pipe is communicated with the manifold, and the drain pipe and the vent pipe are disposed at an interval.

In one embodiment, the housing structure includes a base and an end cover connected to the base, the base and the end cover form the manifold, and the base and the end cover are respectively provided with the mounting hole.

In one embodiment, shell structure still includes that first sealed pad, second are sealed fills up and the ring flange, first sealed pad is located the base with between the end cover, and be used for sealed being located the base with the end cover, the sealed pad of second set up in the mounting hole department of end cover, and be used for sealing the end cover with the water conservancy diversion cover, the ring flange court the end cover compresses tightly the second sealing washer.

Another object of the present application is to provide a food processing apparatus, which includes the shaft sealing device, the food processing apparatus further includes a wind casing, a driver, and an impeller located in the wind casing, the casing structure is connected to the wind casing, and the first end extends into the wind casing and is connected to the impeller, and the second end is connected to the driver.

The beneficial effect of this application lies in: when a large amount of cleaning liquid is sprayed into the wind shell, the liquid is attached to the first end and flows towards the second end, and when the cleaning liquid flows to the position of the guide ring, the cleaning liquid is blocked and limited to continue flowing towards the second end under the limitation of the guide ring and flows along the surface of the guide ring, and flows into the manifold under the action of the gravity of the cleaning liquid or flows into the manifold along the guide ring under the rotation state of the transmission shaft, so that the liquid leakage from the second end is avoided, and the purpose of liquid sealing is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a food processing apparatus provided in an embodiment of the present application;

FIG. 2 is an enlarged fragmentary view of the food processing apparatus of FIG. 1 at A;

FIG. 3 is a schematic perspective view of a shaft seal device according to an embodiment of the present application;

FIG. 4 is an exploded schematic view of the shaft seal arrangement of FIG. 3;

fig. 5 is a perspective view of the flow guide structure of fig. 4.

Wherein, in the figures, the respective reference numerals:

200. a shaft seal device; 100. food processing equipment; 10. a housing structure; 11. a base; 12. an end cap; 20. a flow guide structure; 21. a flow guide ring; 22. a flow guide sleeve; 101. an impeller hub; 31. a first gasket; 32. a gasket; 112. a manifold; 121. a breather pipe; 122. a drain pipe; 213. a second seal groove; 60. a drive shaft; 61. a first end; 62. a second end; 123. a first seal groove; 34. a flange plate; 35. a second gasket; 211. a flow guide surface; 111. mounting holes; 118. a base plate; 117. a ring; 115. an upper half ring; 116. a lower half ring;

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the present application, and the specific meanings of the above terms may be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 3, an embodiment of the present application provides a shaft seal apparatus 200, which is used in cooperation with a transmission shaft 60 and for shaft sealing the transmission shaft 60, wherein the transmission shaft 60 includes a first end 61 and a second end 62 opposite to the first end 61. Alternatively, the first end 61 extends into the wind housing and is connected to an impeller located within the wind housing, while the second end 62 is connected to a driver which drives the impeller to rotate via the second end 62. The shaft sealing device 200 comprises a housing structure 10 and a flow guiding structure 20. Casing structure 10 connects the windbox and has seted up manifold 112, and mounting hole 111 has all been seted up on the relative both sides surface that sets up of casing structure 10, and each mounting hole 111 all communicates manifold 112, and transmission shaft 60 wears to establish manifold 112, and first end 61 and second end 62 rotate respectively to be set up in two mounting holes 111. Optionally, the manifold 112 communicates with the inner cavity of the wind housing through a mounting hole 111, and the impeller is disposed in the inner cavity of the wind housing. Alternatively, the first and second ends 61, 62 are connected to the impeller and the driver, respectively, and the first end 61 extends into the wind housing to connect to the impeller. Optionally, the second end 62 is in sealed rotational connection with the wall of the corresponding mounting hole 111. Referring to fig. 4 and 5, the flow guiding structure 20 includes a flow guiding ring 21 disposed in the manifold 112, and the flow guiding ring 21 is detachably sleeved on the driving shaft 60 and rotates with the driving shaft 60. It can be understood that the deflector ring 21 is detachably coupled to the driving shaft 60, thereby improving the convenience of assembly and disassembly. Alternatively, cleaning fluid cannot pass between flow directing ring 21 and drive shaft 60, and flow directing ring 21 acts to impede fluid attached to drive shaft 60 from flowing toward second end 62 and to direct fluid away from drive shaft 60 for collection in manifold 112.

Alternatively, when a large amount of cleaning liquid is sprayed into the wind housing, the liquid is attached to the first end 61 and flows toward the second end 62, and when the cleaning liquid flows to the deflector ring 21, the cleaning liquid is blocked and restricted from flowing toward the second end 62 and flowing along the surface of the deflector ring 21 under the restriction of the deflector ring 21, and flows into the manifold 112 under the action of the gravity of the cleaning liquid itself, or flows into the manifold 112 along the deflector ring 21 in the rotating state of the transmission shaft 60, so that the liquid is prevented from leaking from the second end 62, and the purpose of liquid sealing is achieved.

Referring to fig. 1 and 3, in one embodiment, the guide ring 21 is provided with a guide surface 211 for guiding the liquid to leave the transmission shaft 60, and the guide surface 211 is disposed toward the first end 61. Optionally, the cleaning fluid flows along the shaft 60 from the first end 61 to the baffle surface 211 and into the manifold 112 under the guidance of the baffle surface 211, thereby avoiding fluid leakage of the cleaning fluid at the second end 62.

In one embodiment, the deflector surface 211 is tapered and inclined toward the second end 62. Optionally, the flow guide surface 211 is inclined toward the second end 62, so that the flow guide of the cleaning solution can be effectively performed, and the flow guide efficiency of the cleaning solution is improved. Referring to fig. 1 and fig. 3, in an embodiment, the flow guiding structure 20 further includes a flow guiding sleeve 22, the flow guiding sleeve 22 is connected to and sleeved at the second end 62 and penetrates through the corresponding mounting hole 111, and the flow guiding ring 21 is connected to the flow guiding sleeve 22. Optionally, the second end 62 of the transmission shaft 60 penetrates through the guide sleeve 22, and the guide sleeve 22 and the second end 62 are connected by a key or a pin, so that the guide sleeve 22 rotates together with the transmission shaft 60. One end of flow guide sleeve 22 is located in manifold 112 and connected to flow guide ring 21, and the other end of flow guide sleeve 22 passes through manifold 112 at corresponding mounting hole 111. Alternatively, cleaning fluid may not pass between flow sleeve 22 and drive shaft 60, i.e., a suitable interference fit between flow sleeve 22 and drive shaft 60 may be provided to prevent gas and liquid leakage.

Optionally, deflector ring 21 and deflector sleeve 22 are fixedly attached or removably attached.

Optionally, deflector ring 21 and deflector sleeve 22 are integrally formed.

Referring to fig. 1 and 3, in an embodiment, a plurality of guide rings 21 are provided, and each guide ring 21 is sequentially disposed at intervals along an axial direction of a guide sleeve 22. Optionally, by providing a plurality of baffle rings 21, the effect of restricting and blocking the cleaning liquid can be improved, and the leakage of the cleaning liquid at the second end 62 can be avoided.

In one embodiment, shaft seal assembly 200 further includes a vent tube 121 disposed in housing structure 10 and a first plug connected to a free end of vent tube 121, a lumen of vent tube 121 communicating with manifold 112. Optionally, the first plug is opened, and a predetermined air pressure is applied to the air pipe 121, so that the air pressure in the manifold 112 is greater than the air pressure in the wind casing, which can prevent the air in the wind casing from flowing to the manifold 112, thereby achieving the purpose of air sealing the inner cavity of the wind casing. Optionally, the pressure in the manifold 112 is 1.3 times the pressure in the inner plenum of the windbox.

Referring to fig. 2 and 4, in one embodiment, the shaft sealing device 200 further includes a drain pipe 122 disposed on the housing structure 10, and a second plug connected to a free end of the drain pipe 122, wherein a lumen of the drain pipe 122 is communicated with the manifold 112, and the drain pipe 122 is disposed at a distance from the vent pipe 121. Optionally, the vent pipe 121 and the drain pipe 122 are arranged up and down, and the vent pipe 121 is located above the drain pipe 122.

Alternatively, the liquid within the manifold 112 can be drained by opening the second plug. And the first plug and the second plug can be opened simultaneously, and cleaning liquid or gas is sprayed into the vent pipe 121, so that the collector 112 is self-cleaned, and the cleaning liquid or gas passes through the lower partAnd out of the manifold 112 via a drain 122. Alternatively, manifold 112 may be charged via vent 121 with a pressure of 10000Pa and a flow rate of 2m³Gas/h to clean the manifold 112.

Referring to fig. 1 and 3, in one embodiment, the housing structure 10 includes a base 11 and an end cover 12 connected to the base 11, the base 11 and the end cover 12 form a manifold 112, and the base 11 and the end cover 12 are respectively provided with a mounting hole 111. Optionally, the base 11 is attached to the wind housing, or the base 11 is part of the wind housing. The base 11 and the end cap 12 are respectively provided with mounting holes 111, so that the first end 61 and the second end 62 are respectively connected to the base 11 and the end cap 12.

In one embodiment, the housing structure 10 further includes a first sealing gasket 31, a second sealing gasket 35 and a flange 34, the first sealing gasket 31 is located between the base 11 and the end cover 12 and is used for sealing between the base 11 and the end cover 12, the second sealing gasket 35 is disposed at the mounting hole 111 of the end cover 12 and is used for sealing between the end cover 12 and the transmission shaft 60, and the flange 34 presses the second sealing gasket toward the end cover 12.

Optionally, the base 11 includes a bottom plate 118 and a ring 117 connected to the bottom plate 118, the mounting hole 111 is opened in the bottom plate 118, the ring 117 is disposed corresponding to the mounting hole 111, and the ring 117 includes an upper ring half 115 and a lower ring half 116, so as to be vertically connected to the transmission shaft 60, which is convenient to install.

Referring to fig. 3 and 5, optionally, the first sealing gasket 31 and the second sealing gasket 35 are both provided with through holes and are made of a flexible material with sealing characteristics, in this embodiment, the first sealing gasket 31 and the second sealing gasket 35 are made of a high molecular polymer prepared by polymerizing tetrafluoroethylene as a monomer. The material product has the characteristics of acid resistance, alkali resistance, high temperature resistance and resistance to various organic solvents. The first sealing gasket 31 can seal the base 11 and the end cover 12, the second sealing gasket 35 can seal the flange plate 34 and the end cover 12, and the flow guide sleeve 22 and the transmission shaft 60 penetrate through corresponding through holes in the second sealing gasket 35, so that the second sealing gasket 35 realizes radial sealing of the flow guide sleeve 22, and gas in the manifold 112 is prevented from leaking along the second end 62 as much as possible.

Referring to fig. 3 and 5, optionally, a gasket 32 is further disposed between the first sealing gasket 31 and the end cover 12, optionally, the gasket 32 is made of a hard material, for example, metal, an end surface of one end of the end cover 12, which abuts against the gasket 32, is provided with a first sealing groove 123, an extending path of the first sealing groove 123 is annularly disposed, and a first sealing ring is disposed in the first sealing groove 123 and is pressed to the gasket 32 through the first sealing ring, so that the gasket 32 and the end cover 12 are sealed. And the first sealing gasket 31 made of flexible material is matched with the gasket 32 made of hard material, so that the parallelism between the gasket 32 and the end surface of the end cover 12 can be adjusted, the gasket 32 compresses the first sealing ring as much as possible, and the sealing property between the gasket 32 and the end cover 12 is improved.

Optionally, the first sealing ring is an O-ring and is made of food grade silicone rubber material.

Referring to fig. 3 and 5, optionally, the flange 34 is screwed to the other end of the end cap 12, thereby fixing the second sealing gasket 35 and making the second sealing gasket seal the guide sleeve 22 radially, so as to reduce the risk of gas leakage from the manifold 112.

The present invention further provides a food processing apparatus 100, the food processing apparatus 100 includes a shaft sealing device 200, the specific structure of the shaft sealing device 200 refers to the above embodiments, and since the food processing apparatus 100 adopts all technical solutions of all the above embodiments, all beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not repeated herein.

Referring to fig. 1 and 5, in one embodiment, a food processing apparatus 100 is used to process flour. The food processing apparatus 100 further includes a blower housing, a driver, and an impeller positioned within the blower housing, the housing structure 10 being attached to the blower housing with the first end 61 extending into the interior of the blower housing and being attached to the impeller and the second end 62 being attached to the driver. Alternatively, the drive is a servo motor, and the drive shaft 60 is driven by the drive, thereby achieving rotation of the impeller.

Optionally, the impeller comprises an impeller hub 101 connected to the drive shaft 60 and blades connected to the impeller hub 101. Impeller hub 101 is located first end 61 and the terminal surface of butt water conservancy diversion cover 22 in the cover, and water conservancy diversion cover 22 butt impeller hub 101's terminal surface department has seted up second seal groove 213, and the extension route of second seal groove 213 is cyclic annular setting, still is equipped with the second sealing washer in the second seal groove 213, can seal impeller hub 101 and water conservancy diversion cover 22 through the second sealing washer.

Optionally, the second sealing ring is an O-ring and is made of food grade silicone rubber material.

The above are merely alternative embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A shaft seal device, cooperates the transmission shaft to use, wherein, the transmission shaft includes first end and with the second end that first end set up relatively, its characterized in that, shaft seal device includes:

2. The shaft seal apparatus of claim 1 wherein: the guide ring is provided with a guide surface for guiding the liquid to be separated from the transmission shaft, and the guide surface faces the first end.

3. The shaft seal apparatus of claim 2 wherein: the flow guide surface is arranged in a conical surface and is inclined towards the second end.

4. The shaft seal apparatus according to any one of claims 1 to 3 wherein: the flow guide structure further comprises a flow guide sleeve, the flow guide sleeve is connected with and sleeved on the second end and penetrates through the corresponding mounting hole, and the flow guide ring is connected with the flow guide sleeve.

5. The shaft seal apparatus of claim 4 wherein: the flow guide rings are arranged in a plurality, and the flow guide rings are sequentially arranged at intervals along the axial direction of the flow guide sleeve.

6. The shaft seal apparatus according to any one of claims 1 to 3 wherein: the shaft seal device further comprises a vent pipe arranged on the shell structure and a first plug connected with the free end of the vent pipe, and a pipe cavity of the vent pipe is communicated with the manifold.

7. The shaft seal apparatus of claim 6 wherein: the shaft seal device further comprises a drain pipe arranged on the shell structure and a second plug connected with the free end of the drain pipe, the pipe cavity of the drain pipe is communicated with the manifold, and the drain pipe and the vent pipe are arranged at intervals.

8. The shaft seal apparatus of claim 4 wherein: the shell structure comprises a base and an end cover connected with the base, the base and the end cover form the manifold, and the base and the end cover are respectively provided with the mounting holes.

9. The shaft seal apparatus of claim 8 wherein: the shell structure still includes that first sealed pad, second seal pad and ring flange, first sealed pad is located the base with between the end cover, and be used for sealed being located the base with the end cover, second sealed pad set up in the mounting hole department of end cover, and be used for sealing the end cover with the water conservancy diversion cover, the ring flange court the end cover compresses tightly the second sealing washer.

10. A food processing apparatus comprising the shaft seal assembly of any one of claims 1 to 9, said food processing apparatus further comprising a blower housing, an actuator, and an impeller located within said blower housing, said housing structure being connected to said blower housing with a first end extending into said blower housing and connected to said impeller and a second end connected to said actuator.