Packing cooling structure of pulping machine

Abstract

The utility model relates to a pulping machine packing cooling structure in the technical field of shaft rod cooling equipment, which comprises a rotating shaft piece, a packing seat, a water ring and a plurality of packings, the plurality of packings are sleeved at the end part of the rotating shaft piece, the end part of the rotating shaft piece is rotatably arranged in the packing seat through the packings, and the water ring is arranged in the packing seat. The water ring is arranged between every two adjacent packings, a communicating structure is arranged between an inner ring and an outer ring of the water ring, a water inlet channel and a water drainage channel are formed in the side wall of the packing base, the diameter of the water inlet channel is larger than that of the water drainage channel, one end of the water inlet channel and one end of the water drainage channel extend to the outer ring of the water ring, and the other end of the water drainage channel extends to the water ring. Therefore, the lubrication cooling effect of the cooling water can be normally achieved, meanwhile, the water inlet pressure and flow can be effectively dredged, alarms are eliminated, and the cooling water can normally work according to the design concept. And meanwhile, cooling water at the water outlet can be recycled through a pipeline, so that the device is green and environment-friendly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of axle cooling equipment, specifically is a grinding machine packing cooling structure. BACKGROUND

[0002] In the papermaking pulping workshop, generally use multiple grinding machines, also called disc mill, in the original factory design, the grinding machine adopts the packing seal form (such as Figure 1 The packing is a kind of sealing structure based on the static sealing principle, mainly relies on bearing effect and labyrinth effect to realize sealing.Bearing effect refers to the hydraulic film formed between packing filler and shaft, so that the relationship similar to sliding bearing is formed between the two, thereby reducing wear.Labyrinth effect is due to the surface smoothness of the shaft cannot reach micro level, packing and shaft can only partially adhere, there are small gaps, medium is intercepted in these gaps multiple times, to achieve sealing effect;

[0003] The cooling water inlet pipeline before packing has pressure gauge and sensor detection alarm device, detects the water inflow pressure of cooling water, whether it is normal.In the design process, cooling water enters packing seat and grinding machine wall by pipeline joint, flows to left and right packing by water ring, and then drips out water by packing gland after lubrication and cooling.

[0004] In actual production process, the cooling water inflow of packing is much larger than the outflow, which causes the cooling water to be squeezed and blocked in water ring and packing seat, affects the pressure gauge and sensor detection alarm device before packing seat, and then generates alarm in DCS control room, and process personnel informs equipment maintenance personnel to carry out maintenance treatment, disassembles packing gland, adjusts packing, so that the pressure of cooling water inlet is released, and the alarm is eliminated.But this treatment mode treats the symptoms but not the disease, the sensor detection alarm device will issue alarm prompt every three to five days, due to equipment reasons, the normal production is affected, and the sealing effect is gradually weakened due to the frequent adjustment and packing wear, and the packing is replaced, which increases the cost. The equipment maintenance personnel also adjusts the water inflow pressure and flow multiple times, and there is no good improvement, the cooling water inflow is less, the packing is dry ground in the movement process, friction generates heat, the packing smokes and catches fire, and the bad influence is expanded.Therefore, in view of these status, it is urgent to develop a grinding machine packing cooling structure to meet the needs of actual use. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a grinding machine packing cooling structure, which solves the above technical problems.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The application discloses a cooling structure of a grinding machine packing, which comprises a rotating shaft, a packing seat, a water ring and a plurality of packings.

[0008] In the above description, as a further scheme, the side wall of the packing seat is further provided with an outwardly protruding fixing ring, the packing seat is fixedly connected with a grinding wall through the fixing ring, the water inlet channel and the water outlet channel are both arranged in the interior of the grinding wall, and the ends of the water inlet channel and the water outlet channel away from the water ring extend to the middle part of the fixing ring and are respectively provided with a water inlet joint and a water outlet joint.

[0009] In the above description, as a further scheme, the end of the water outlet joint is further provided with a throttle valve.

[0010] In the above description, as a further scheme, the inner ring of the water ring has a diameter larger than that of the rotating shaft, and the outer ring of the water ring has a diameter smaller than that of the interior of the packing seat.

[0011] In the above description, as a further scheme, the through connection structure between the inner ring and the outer ring of the water ring is a plurality of through holes.

[0012] In the above description, as a further scheme, the rotating shaft comprises a packing sleeve and a grinding disc shaft, the packing sleeve is sleeved at the end of the grinding disc shaft, and the packing sleeve is inserted into the interior of the packing and rotates.

[0013] In the above description, as a further scheme, one end of the packing seat is an inwardly extending limiting part, one end of the packing seat is provided with a detachable gland, and the plurality of packings and the water ring are abutted between the limiting part and the gland.

[0014] The application has the following beneficial effects:

[0015] The cooling structure of the grinding machine packing of the application is provided with a water outlet channel between the packing seat and the water ring, the diameter of the water outlet channel is smaller than that of the water inlet channel, a flow-controllable hand valve or throttle valve is arranged at the end of the water outlet channel, the water outlet flow is controlled, the lubrication and cooling effects of the cooling water can be normally realized, the water inlet pressure and flow can be effectively dredged, the alarm is eliminated, and the cooling water can normally function according to the design concept. Meanwhile, the cooling water of the water outlet can be recycled through a pipeline, and the application is green and environment-friendly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a cross-sectional structure schematic view of the existing pulp refiner packing cooling structure;

[0017] Figure 2 It is a cross-sectional structure schematic view of the existing pulp refiner packing cooling structure;

[0018] Figure 3 It is a cross-sectional structure schematic view of the existing pulp refiner packing cooling structure from the perspective of the three-dimensional view;

[0019] Figure 4 It is Figure 2 It is a partial enlarged structure schematic view of A in the figure;

[0020] Figure 5 It is a structure schematic view of the water ring in the utility model;

[0021] In the figure: 1 - water inlet channel, 11 - cooling water inlet joint; 2 - gland; 3 - packing sleeve; 4 - grinding disc shaft; 5 - packing seat, 51 - fixing ring; 52 - limiting portion; 6 - disc mill wall; 7 - packing; 8 - water ring; 81 - through hole; 9 - drainage channel; 91 - drainage joint. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the utility model is further described below in combination with examples and drawings, and the content mentioned in the implementation manner is not a limitation on the utility model. The utility model is described in detail below in combination with the drawings.

[0023] Please refer to Figures 1-5 , a specific implementation of a pulp refiner packing cooling structure, including rotating shaft parts, packing seat 5, water ring 8, four packings 7 and disc mill wall 6, the packing seat 5 is the cylindrical hollow structure, four packings 7 are arranged between rotating shaft parts and packing seat 5, and the packing 7 is the annular hollow structure, rotating shaft parts include packing sleeve 3 and grinding disc shaft 4, the packing sleeve 3 is sleeved in the end of grinding disc shaft 4, and the packing sleeve 3 is inserted in the inside of packing 7 and rotates,

[0024] The water ring 8 is arranged between adjacent two packings 7, as shown in Figure 4 The inner circle and the outer circle of the water ring 8 are the conductive structure, the side wall of the packing seat 5 is respectively provided with water inlet channel 1 and drainage channel 9, and the diameter of the water inlet channel 1 is greater than the diameter of the drainage channel 9;

[0025] The side wall of the packing seat 5 is further provided with an outwardly protruding fixing ring, the packing seat 5 is fixedly connected with the disc mill wall 6 through the fixing ring, the water inlet channel 1 and the water outlet channel 9 are both arranged in the interior of the disc mill wall 6, one end of the water inlet channel 1 and the water outlet channel 9 both extends to the outer ring of the water ring 8, the other end of the water inlet channel 1 and the water outlet channel 9 extending to the middle part of the fixing ring is respectively provided with a water inlet joint 11 and a water outlet joint 91;

[0026] One end of the packing seat 5 is an inwardly extending limiting part 52, one end of the packing seat 5 is provided with a detachable gland 2, the four packings 7 and the water ring 8 abut between the limiting part 52 and the gland 2.

[0027] By additionally arranging a water outlet channel 9 between the packing seat 5 and the water ring 8, the diameter of the water outlet channel 9 is smaller than that of the water inlet channel 1, and a flow-controllable hand valve or throttle valve is arranged at the end of the water outlet channel 9, so as to control the water outlet flow, so as to ensure that the lubricating and cooling effect of the cooling water can be normally realized, and the water inlet pressure and flow can be effectively dredged, the alarm is eliminated, and the cooling water can normally work according to the design concept. At the same time, the cooling water of the water outlet can be recycled through the pipeline, which is green and environmentally friendly.

[0028] In the preferred scheme, the end of the water outlet joint 91 is further provided with a throttle valve (not shown), the inner ring diameter of the water ring 8 is greater than the diameter of the rotating shaft, and the outer ring diameter of the water ring 8 is smaller than the inner diameter of the packing seat 5. When the water inlet flow of the water inlet channel 1 is greater than the water outlet flow of the water outlet channel 9, a bearing effect can also be formed, a hydraulic film is formed between the packing 7 and the rotating shaft, so that a relationship similar to a sliding bearing is formed between the two, effectively reducing friction and improving lubrication effect.

[0029] The forming principle of the hydraulic film is specifically as shown in Figures 4-5 The conductive structure between the inner ring and the outer ring of the water ring 8 is a plurality of through holes 81, the cooling water entering the water inlet channel 1 can penetrate between the inner side wall and the outer side wall of the packing 7 through the through holes 81, so as to reduce the dry grinding and smoking phenomenon of the packing 7 caused by insufficient cooling and lubrication.

[0030] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above in the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the technical scheme of the present application, and any equivalent embodiment with equivalent changes is equivalent to the above embodiment. Any simple modification, equivalent change and modification of the above embodiment within the scope of the technical scheme of the present application are all within the scope of the technical scheme of the present application.

Claims

1. A refiner plate pack cooling structure, characterized by, The application relates to a disc valve cooling structure of a disc refiner. The disc valve cooling structure comprises a rotating shaft and a disc valve seat, the disc valve seat is a cylindrical hollow structure, a plurality of disc valves are arranged between the rotating shaft and the disc valve seat, the disc valve is an annular hollow structure, the plurality of disc valves are sleeved on the end of the rotating shaft, and the end of the rotating shaft is rotatably arranged in the interior of the disc valve seat through the disc valve. A water ring is arranged between the adjacent two disc valves, and the inner ring and the outer ring of the water ring are in a conductive structure. Water inlet channels and water outlet channels are arranged on the side wall of the disc valve seat, the diameter of the water inlet channel is larger than that of the water outlet channel, and one end of the water inlet channel and the water outlet channel extends to the outer ring of the water ring.

2. A pulp mill shoe cooling structure according to claim 1, characterized in that: The disc valve cooling structure further comprises a disc mill wall, the side wall of the disc valve seat is further provided with an outwardly protruding fixing ring, the disc valve seat is fixedly connected with the disc mill wall through the fixing ring, the water inlet channel and the water outlet channel are arranged in the interior of the disc mill wall, the end of the water inlet channel and the water outlet channel away from the water ring extends to the middle part of the fixing ring, and the water inlet channel and the water outlet channel are respectively provided with a water inlet joint and a water outlet joint.

3. A pulp mill shoe cooling structure according to claim 2, characterized in that: The end of the water outlet joint is further provided with a throttle valve.

4. A pulp mill shoe cooling structure according to claim 1, characterized in that: The diameter of the inner ring of the water ring is larger than that of the rotating shaft, and the diameter of the outer ring of the water ring is smaller than the internal diameter of the disc valve seat.

5. A pulp mill shoe cooling structure according to claim 4, characterized in that: The conductive structure between the inner ring and the outer ring of the water ring is a plurality of through holes.

6. A pulp mill shoe cooling structure according to claim 1, characterized in that: The rotating shaft comprises a disc valve sleeve and a disc mill shaft, the disc valve sleeve is sleeved on the end of the disc mill shaft, and the disc valve sleeve is inserted into the interior of the disc valve to rotate.

7. A pulp mill shoe cooling structure according to claim 1, characterized in that: One end of the disc valve seat is an inwardly extending limiting part, one end of the disc valve seat is provided with a detachable gland, and the plurality of disc valves and the water ring abut between the limiting part and the gland.

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