Integrated equipment for recovering and filtering lead slime in lead slime water for washing battery plate coating

Abstract

The utility model relates to the field of environmental protection, and discloses an integrated device for recovering and filtering lead slime in battery plate coating and flushing lead slime water, which comprises a machine body, a water inlet pipe penetrates through and is fixedly connected with the inner wall of the upper half part of the left end of the machine body, and a water outlet pipe penetrates through and is fixedly connected with the upper half part of the right end of the machine body; a recycling and filtering mechanism is arranged in the machine body and comprises a rotating shaft, the front end and the rear end of the rotating shaft are rotationally connected with the inner wall of the machine body, a mounting plate is fixedly connected to the outer wall of the rotating shaft, and a moving plate is slidably connected to the inner wall of the mounting plate. According to the lead slime recycling device, due to the arrangement of the recycling and filtering mechanism, when the mounting plate rotates to different positions, the movable plate and the movable plate can move to different positions, so that the lead slime can move to the position of water vapor in the evaporator from the position separated from acid liquor after being recycled; and the effect of completing two functions of separation and recovery at one time is achieved.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection, in particular to an integrated device for recovering and filtering lead sludge in lead sludge water used in washing battery plate coating. Background Art

[0002] Battery plate coating is an important step in the battery manufacturing process, specifically referring to the process of evenly coating the prepared lead paste on the grid to form the green plate.

[0003] At present, in the process of lead sludge recovery, it is often necessary to filter the lead sludge and acid water first. After searching, Chinese patent announcement number: CN219341986U discloses a lead sludge filtering device for waste lead-acid batteries, including a box body, a drain port is opened on the box body, a filtering device is installed in the box body, the partition is installed in the box body, the filter cavity is opened on the partition, the number of the filter cavities is five, the filter cavities are equidistantly distributed on the partition, the square opening is opened on the partition, and the square opening is arranged corresponding to the filter cavity. The waste lead-acid battery lead sludge is discharged into the box body and the lead sludge is discharged into the five filter cavities on the partition. The lead sludge filter filters the lead sludge. The output end of the first electric push rod drives the horizontal plate to move upward, so that the dredging needle is inserted into the hole on the lead sludge filter to clean the clogged lead sludge; the second electric push rod is regularly powered on and operated, and the output end of the second electric push rod drives the push plate to move in the filter cavity and move close to the lead sludge filter to clean the lead sludge filtered on the surface of the lead sludge filter. The lead sludge pushed out by the push plate is discharged out of the box through the lead sludge outlet.

[0004] Although the above application documents can discharge lead sludge, in the process of lead sludge recovery, the pushed out lead sludge often needs to be further recovered, and only a single filtration may cause the water content inside the lead sludge to remain high, making it inconvenient for staff to collect it. Therefore, an integrated equipment for lead sludge recovery and filtration in battery plate washing lead sludge water is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an integrated equipment for recovering and filtering lead sludge in lead sludge water for washing battery coated plates, aiming to improve the problem in the prior art that it is inconvenient to recover the filtered lead sludge.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an integrated equipment for recovering and filtering lead mud in lead mud water for washing battery coated plates, comprising a body, an inner wall of the upper left end of the body penetrating and fixedly connected with a water inlet pipe, and an upper right end of the body penetrating and fixedly connected with a water outlet pipe, a recovery and filtering mechanism is arranged inside the body, the recovery and filtering mechanism comprises a rotating shaft, the front and rear ends of the rotating shaft are rotatably connected to the inner wall of the body, the outer wall of the rotating shaft is fixedly connected with a mounting plate, the inner wall of the mounting plate is slidably connected with a movable plate, the inner wall of the mounting plate is slidably connected with a movable plate, a drawer is slidably arranged on the lower left inner wall of the body, a heating groove is opened on the inner wall of the lower left end of the body, a heating rod is arranged inside the heating groove, a fixing component is commonly provided inside the body and the inside of the mounting plate, the fixing component comprises a movable groove, the movable groove is opened on the inner wall of the body, and the lower right inner wall of the body penetrating and fixedly connected with a drain pipe.

[0007] As a further description of the above technical solution:

[0008] A recovery hole is provided on the inner wall of the mounting plate, a moving hole is provided on the inner wall of the movable plate, a pushing assembly is provided inside the movable plate, the pushing assembly includes a moving groove, a pushing block is slidably connected to the inner wall of the moving groove, the outer wall of the pushing block is elastically connected to the inner wall of the moving groove by spring five, and the rear end of the movable plate is elastically connected to the inner wall of the mounting plate by spring one.

[0009] As a further description of the above technical solution:

[0010] The inner wall of the movable plate is provided with a discharge hole, the inner wall of the movable plate is fixedly connected with a filter plate, and the front end of the movable plate is elastically connected to the inner wall of the mounting plate via a second spring.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the movable groove is slidably connected with a clamping block, and the rear end of the clamping block is elastically connected to the inner wall of the movable groove via a spring.

[0013] As a further description of the above technical solution:

[0014] The fixing assembly also includes an air pressure chamber, which is opened on the inner wall of the mounting plate. The inner wall piston of the air pressure chamber is connected to a push plate. The outer wall of the push plate is elastically connected to the inner wall of the air pressure chamber by a spring. The inner wall piston of the air pressure chamber is connected to a push block. The rear end opening of the air pressure chamber matches the shape and size of the card block.

[0015] As a further description of the above technical solution:

[0016] The angle between the line connecting the top of the heating tank and the midpoint of the rotating shaft and the line connecting the leftmost end of the water inlet pipe and the midpoint of the rotating shaft in the same cross-section in the front-to-back direction is greater than ninety degrees.

[0017] As a further description of the above technical solution:

[0018] The distance between the front and rear of each recovery hole is greater than the diameter of the recovery hole, and the size and shape of the movable hole are consistent with the size and shape of the recovery hole.

[0019] As a further description of the above technical solution:

[0020] The shape of one end of the mounting plate away from the rotating shaft is an arc shape that matches the shape of the inner wall of the machine body, and the outer wall of the mounting plate is provided with a silicone coating.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by arranging the rotating shaft, the mounting plate, the movable plate, the movable hole, the pushing assembly, the movable groove, the pushing block, the fifth spring, the first spring, the movable plate, the discharge hole, the filter plate, the second spring, and the recovery hole, when the mounting plate is rotated to different positions, the movable plate and the movable plate can move to different positions, thereby ensuring that the lead sludge can be moved from the position where it is separated from the acid liquid to the position of the water vapor in the evaporator after the recovery is completed, thereby achieving the effect of completing the two functions of separation and recovery at one time.

[0023] 2. In the utility model, the mounting plate can be fixed in a vertically upward position through the arrangement of the movable groove, the clamping block, the third spring, the air pressure chamber, the push plate, the fourth spring and the push block, and the mounting plate can be rotated again only when a large amount of lead mud accumulates, thereby ensuring the collection effect of the lead mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the present invention;

[0027] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the three-dimensional structure of part A;

[0028] Figure 5 It is a schematic sectional view of a three-dimensional structure of a part of the structure of the recovery and filtration mechanism of the present invention;

[0029] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged three-dimensional structure of part B.

[0030] Legend:

[0031] 1. Machine body; 2. Drain pipe; 3. Water inlet pipe; 4. Water outlet pipe; 5. Recovery and filtering mechanism; 6. Drawer; 7. Heating tank; 8. Heating rod; 9. Fixed assembly; 51. Rotating shaft; 52. Mounting plate; 53. Moving plate; 54. Moving hole; 55. Pushing assembly; 551. Moving tank; 552. Pushing block; 553. Spring five; 56. Spring one; 57. Movable plate; 58. Discharge hole; 59. Filter; 510. Spring two; 511. Recovery hole; 91. Movable tank; 92. Block; 93. Spring three; 94. Air pressure chamber; 95. Pushing plate; 96. Spring four; 97. Pushing block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an integrated device for recovering and filtering lead sludge in lead sludge water for washing battery coated plates, comprising a body 1. The front view of the body 1 is square. A water inlet pipe 3 is passed through and fixedly connected to the inner wall of the upper left end of the body 1. Water containing lead sludge can enter the body 1 through the water inlet pipe 3. A water outlet pipe 4 is passed through and fixedly connected to the upper right end of the body 1. The right end of the water outlet pipe 4 is connected to a water suction pump with suction.

[0034] Reference Figure 2 、 Figure 5 and Figure 6A recovery and filtering mechanism 5 is provided inside the body 1. The recovery and filtering mechanism 5 includes a rotating shaft 51. The rotating shaft 51 is in the shape of a cylinder. The front and rear ends of the rotating shaft 51 are rotatably connected to the inner wall of the body 1. The outer wall of the rotating shaft 51 is fixedly connected with a mounting plate 52. The setting of the silicone coating ensures that the mounting plate 52 can fit with the inner wall of the body 1 when it is rotated to the upper and lower right areas. The inner wall of the mounting plate 52 is provided with recovery holes 511. The distance between the front and rear of the two recovery holes 511 is greater than the diameter of the recovery hole 511. The inner wall of the mounting plate 52 is slidably connected with a movable plate 53. The sliding direction of the movable plate 53 is forward and backward sliding. The inner wall of the movable plate 53 is provided with a movable hole 54. The size and shape of the movable hole 54 are consistent with the size and shape of the recovery hole 511.

[0035] Reference Figure 5 and Figure 6 A pushing assembly 55 is provided inside the movable plate 53, and the pushing assembly 55 includes a movable groove 551. The distance between any two movable grooves 551 is consistent with the distance between any two recovery holes 511. The inner wall of the movable groove 551 is slidably connected with a pushing block 552. The outer wall of the pushing block 552 is elastically connected to the inner wall of the movable groove 551 through a spring 553. One end of the spring 553 is fixedly connected to the outer wall of the pushing block 552, and the other end of the spring 553 is fixedly connected to the inner wall of the movable groove 551.

[0036] Reference Figure 2 、 Figure 3 and Figure 6 The rear end of the movable plate 53 is elastically connected to the inner wall of the mounting plate 52 by a spring 56, one end of the spring 56 is fixedly connected to the rear end of the movable plate 53, and the other end of the spring 56 is fixedly connected to the inner wall of the mounting plate 52. The inner wall of the mounting plate 52 is slidably connected with a movable plate 57, and a discharge hole 58 is provided on the inner wall of the movable plate 57. The shape and size of the discharge hole 58 are consistent with the recovery hole 511. The inner wall of the movable plate 57 is fixedly connected with a filter plate 59. The filter plate 59 can allow water to pass through, but lead mud cannot pass through. The front end of the movable plate 57 is elastically connected to the inner wall of the mounting plate 52 by a spring 2 510, one end of the spring 2 510 is fixedly connected to the front end of the movable plate 57, and the other end of the spring 2 510 is fixedly connected to the inner wall of the mounting plate 52. A drawer 6 is slidably provided on the lower left inner wall of the body 1, and the drawer 6 can be taken out from the inside of the body 1.

[0037] The distance between the movable plate 53 and the movable plate 57 inside the vertical mounting plate 52 in the upper half of the rotating shaft 51 and the body 1 is half the distance between the two recovery holes 511. At this time, the movable hole 54 coincides with the recovery hole 511, and the filter plate 59 coincides with the recovery hole 511.

[0038] When the mounting plate 52 is in a horizontal position on the right side of the rotating shaft 51, the distance between the position of the movable plate 53 and the front surface of the machine body 1 is less than half of the distance between the two recovery holes 511 minus the remaining rectangular portion after the diameter of the recovery hole 511 is subtracted, but is greater than zero. At this time, the recovery hole 511 and the movable hole 54 have no overlapping positions at all, but the recovery hole 511 and the movable groove 551 do not completely overlap. At this time, the distance between the movable plate 57 and the inner wall of the machine body 1 is zero, and the position of the discharge hole 58 coincides with that of the movable groove 551.

[0039] When the mounting plate 52 is in a horizontal position on the left side of the rotating shaft 51 , the distance between the movable plate 53 and the machine body 1 is exactly zero, and the movable groove 551 is exactly in the same plane as the recovery hole 511 .

[0040] Reference Figure 2 A heating groove 7 is provided on the inner wall of the lower half of the left end of the body 1. In the same cross-section in the front-to-back direction, the angle between the line connecting the top of the heating groove 7 and the midpoint of the rotating shaft 51 and the line connecting the leftmost end of the water inlet pipe 3 and the midpoint of the rotating shaft 51 is greater than ninety degrees. A heating rod 8 is provided inside the heating groove 7, and a plurality of holes communicating with the heating groove 7 are provided on the inner wall of the body 1 on the right side of the heating groove 7.

[0041] Reference Figure 3 - Figure 5 A fixing component 9 is commonly provided inside the body 1 and inside the mounting plate 52. The fixing component 9 includes a movable groove 91. The movable groove 91 is opened on the inner wall of the body 1. The inner wall of the movable groove 91 is slidably connected with a clamping block 92. The sliding direction of the clamping block 92 is forward and backward sliding. The rear end of the clamping block 92 is elastically connected to the inner wall of the movable groove 91 through a spring three 93. One end of the spring three 93 is fixedly connected to the rear end of the clamping block 92, and the other end of the spring three 93 is fixedly connected to the inner wall of the movable groove 91.

[0042] Reference Figure 3 - Figure 5 The fixing component 9 also includes an air pressure chamber 94, which is opened on the inner wall of the mounting plate 52. The inner wall piston of the air pressure chamber 94 is connected to a push plate 95. The outer wall of the push plate 95 is elastically connected to the inner wall of the air pressure chamber 94 through a spring four 96. One end of the spring four 96 is fixedly connected to the outer wall of the push plate 95, and the other end of the spring four 96 is fixedly connected to the inner wall of the air pressure chamber 94. The inner wall piston of the air pressure chamber 94 is connected to a push block 97. The rear end opening of the air pressure chamber 94 matches the shape and size of the block 92. The drain pipe 2 is passed through and fixedly connected to the lower right inner wall of the body 1.

[0043] Working principle: When in use, the staff first uses a water pump to pass the lead mud water that needs to be filtered and recovered into the water inlet pipe 3, and then uses the water pump to suck out the filtered water through the water outlet pipe 4.

[0044] When water enters the body 1 through the water inlet pipe 3, the water flows from left to right in the upper half of the body 1. At the same time, the distance between the movable plate 53 and the movable plate 57 inside the vertical mounting plate 52, which is in the upper half of the rotating shaft 51, and the body 1 is half the distance between the two recovery holes 511. Therefore, at this time, the movable plate 53 moves forward under the elastic force of the spring 1 56, and the movable plate 57 moves backward under the elastic force of the spring 2 510, and maintains a state in which the end away from the middle of the body 1 is in contact with the inner wall of the body 1.

[0045] When the movable plate 53 and the movable plate 57 are both in the state of moving outward, the movable hole 54 coincides with the recovery hole 511, and the filter plate 59 coincides with the recovery hole 511. Therefore, the water flow can pass through the common part of the movable hole 54 and the recovery hole 511 at this time, and under the filtering effect of the filter plate 59, it is ensured that the water body can pass through the filter plate 59, and the lead mud can remain inside the recovery hole 511 on the left side of the filter plate 59.

[0046] When there is a lot of lead mud left inside the recovery hole 511, the filter plate 59 is blocked by the lead mud, so the water flow cannot pass through the filter plate 59 blocked by the lead mud. Therefore, the thrust of the water flow can push the push plate 95, so that the push plate 95 enters the air pressure chamber 94, thereby increasing the gas pressure inside the air pressure chamber 94, so that the push block 97 moves backward under the action of the air pressure, so that the push block 97 pushes the block 92 out, so that the limit between the mounting plate 52 and the block 92 is released, and the mounting plate 52 rotates clockwise under the thrust of the water flow.

[0047] When the mounting plate 52 rotates ninety degrees, the mounting plate 52 originally on the far left is in the vertical position above the rotating shaft 51. At this time, since the push plate 95 on the mounting plate 52 is not subject to thrust, the push block 97 is on the inner side of the air pressure chamber 94. Therefore, when the rear end of the air pressure chamber 94 moves to the same horizontal position as the card block 92, the card block 92 can enter the rear end position of the air pressure chamber 94 under the elastic force of spring three 93, thereby limiting the new mounting plate 52.

[0048] The mounting plate 52, which was originally located above the rotating shaft 51 and was vertical, is now located on the right side of the rotating shaft 51 and is in a horizontal position. When the mounting plate 52 is in this position, the distance between the position of the movable plate 53 and the front surface of the body 1 is less than half of the distance between the two recovery holes 511 minus the remaining rectangular portion after deducting the diameter of the recovery hole 511, but is greater than zero.

[0049] At this time, the movable plate 53 moves toward the direction of entering the mounting plate 52 under the pressure of the inner wall of the body 1, and at this time, part of the outer wall of the movable plate 53 and the area where part of the movable groove 551 is located coincide with the position of the recovery hole 511. Since the movable groove 551 is not a through hole but a one-way groove, the movable plate 53 can block the movable groove 551 at this time, but the push block 552 cannot move outward because it does not completely coincide with the position of the recovery hole 511.

[0050] At the same time, the distance between the movable plate 57 and the inner wall of the body 1 is zero at this time, so the movable plate 57 completely enters the interior of the mounting plate 52 under the squeezing action of the inner wall of the body 1, so the position of the discharge hole 58 coincides with the position of the movable groove 551.

[0051] At the same time, since the outer wall of the mounting plate 52 fits with the inner wall of the body 1, after the mounting plate 52, which was originally in a horizontal position on the right side of the rotating shaft 51, rotates ninety degrees, the water originally in the upper right end area and has not flowed out of the water outlet pipe 4 can be driven to the lower right end area, and the water can now flow out of the drain pipe 2. Because the area at the lower right end is blocked by the mounting plate 52 and the movable plate 53 at this time, no new water enters the lower right end area at this time. Therefore, after rotating ninety degrees, when the mounting plate 52, which was originally on the right side of the rotating shaft 51, rotates to the area below the rotating shaft 51, it will not bring water into the lower left area of ​​the body 1.

[0052] When the mounting plate 52 moves to a horizontal position on the left side of the rotating shaft 51, the distance between the movable plate 53 and the body 1 is exactly zero. Therefore, the movable plate 53 moves under the squeezing action of the inner wall of the body 1 to a position where the movable groove 551 is exactly in the same plane as the recovery hole 511. Therefore, the push block 552 can move downward under the elastic force of the spring 553.

[0053] At the same time, the distance between the movable plate 57 and the inner wall of the body 1 is zero, so the movable plate 57 completely enters the interior of the mounting plate 52 under the squeezing action of the inner wall of the body 1, so the position of the discharge hole 58 coincides with the position of the movable groove 551.

[0054] Therefore, at this time, when the lead mud inside the recovery hole 511 is subjected to force, it can move downward without hindrance, thereby entering the interior of the drawer 6. At the same time, due to the activation of the heating rod 8, the lead mud can evaporate the water inside it under the heating effect of the heating rod 8. The staff only needs to wait for the water inside the lead mud to evaporate, and then take out the drawer 6 to take out the lead mud particles that have been filtered and evaporated.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated device for recovering and filtering lead sludge in lead sludge water from battery plate washing, comprising a body (1), characterized in that: A water inlet pipe (3) is passed through and fixedly connected to the inner wall of the upper left end of the body (1), and a water outlet pipe (4) is passed through and fixedly connected to the upper right end of the body (1). A recovery and filtering mechanism (5) is provided inside the body (1). The recovery and filtering mechanism (5) comprises a rotating shaft (51), and the front and rear ends of the rotating shaft (51) are rotatably connected to the inner wall of the body (1). The outer wall of the rotating shaft (51) is fixedly connected to a mounting plate (52), and the inner wall of the mounting plate (52) is slidably connected to a movable plate (53). The mounting plate (52) The inner wall of the machine body (1) is slidably connected to a movable plate (57), the inner wall of the lower left side of the machine body (1) is slidably provided with a drawer (6), the inner wall of the lower left end of the machine body (1) is provided with a heating groove (7), the interior of the heating groove (7) is provided with a heating rod (8), the interior of the machine body (1) and the interior of the mounting plate (52) are jointly provided with a fixing component (9), the fixing component (9) includes a movable groove (91), the movable groove (91) is provided on the inner wall of the machine body (1), and the lower right inner wall of the machine body (1) is penetrated and fixedly connected with a drain pipe (2).

2. The integrated equipment for recovering and filtering lead sludge in lead sludge water for washing battery coated plates according to claim 1, characterized in that: The inner wall of the mounting plate (52) is provided with a recovery hole (511), the inner wall of the movable plate (53) is provided with a movable hole (54), a pushing assembly (55) is provided inside the movable plate (53), the pushing assembly (55) comprises a movable groove (551), the inner wall of the movable groove (551) is slidably connected to a pushing block (552), the outer wall of the pushing block (552) is elastically connected to the inner wall of the movable groove (551) via a spring five (553), and the rear end of the movable plate (53) is elastically connected to the inner wall of the mounting plate (52) via a spring one (56).

3. The integrated equipment for recovering and filtering lead sludge in lead sludge water used for washing battery coated plates according to claim 1, characterized in that: The inner wall of the movable plate (57) is provided with a discharge hole (58), the inner wall of the movable plate (57) is fixedly connected with a filter plate (59), and the front end of the movable plate (57) is elastically connected to the inner wall of the mounting plate (52) via a second spring (510).

4. The integrated equipment for recovering and filtering lead sludge in lead sludge water used for washing battery coated plates according to claim 1, characterized in that: The inner wall of the movable groove (91) is slidably connected to a clamping block (92), and the rear end of the clamping block (92) is elastically connected to the inner wall of the movable groove (91) via a spring three (93).

5. The integrated equipment for recovering and filtering lead sludge in lead sludge water used for washing battery coated plates according to claim 1, characterized in that: The fixing assembly (9) further includes an air pressure chamber (94), the air pressure chamber (94) being opened on the inner wall of the mounting plate (52), the inner wall piston of the air pressure chamber (94) being connected to a push plate (95), the outer wall of the push plate (95) being elastically connected to the inner wall of the air pressure chamber (94) via a spring four (96), the inner wall piston of the air pressure chamber (94) being connected to a push block (97), and the rear end opening of the air pressure chamber (94) being in conformity with the shape and size of the clamping block (92).

6. The integrated equipment for recovering and filtering lead sludge in lead sludge water used for washing battery coated plates according to claim 1, characterized in that: The angle between the line connecting the top of the heating tank (7) and the midpoint of the rotating shaft (51) and the line connecting the leftmost end of the water inlet pipe (3) and the midpoint of the rotating shaft (51) in the same cross-section in the front-to-back direction is greater than ninety degrees.

7. The integrated equipment for recovering and filtering lead sludge in lead sludge water from battery plate washing according to claim 2, characterized in that: The distance between the front and rear of each recovery hole (511) is greater than the diameter of the recovery hole (511), and the size and shape of the movable hole (54) are consistent with the size and shape of the recovery hole (511).

8. The integrated equipment for recovering and filtering lead sludge in lead sludge water from battery plate washing according to claim 1, characterized in that: The shape of one end of the mounting plate (52) away from the rotating shaft (51) is an arc shape that matches the shape of the inner wall of the body (1), and the outer wall of the mounting plate (52) is provided with a silicone coating.

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