Grinding device with automatic feeding function

Abstract

The utility model discloses a grinding device with an automatic feeding function, which comprises a grinding box, a grinding part for dispersing and mixing paint liquid and a pushing part for controlling the feeding of the paint liquid, the grinding cavity is formed in the inner side of the grinding box, the mounting cavity is formed in the top of the grinding cavity, the liquid guide through hole is formed in the bottom of the grinding cavity, and the liquid outlet frame is arranged at the bottom of the liquid guide through hole. And the grinding plate drives a plurality of grinding strips to rotate in a plurality of liquid carrying grooves in the liquid carrying plate, so that the grinding strips grind the paint liquid in the liquid carrying grooves, and the problems that existing equipment cannot conveniently control supply and feeding of paint liquid materials, the efficiency of grinding and dispersing the paint liquid by the existing equipment is low, and the grinding efficiency is poor are solved. The paint liquid material components are distributed unevenly and insufficiently, and the grinding and dispersing efficiency and practicability of the equipment on the paint liquid are affected.

Description

Technical Field

[0001] The utility model relates to the technical field of latex paint, in particular to a grinding device with an automatic feeding function. Background Art

[0002] Latex paint is a type of water-based paint made by adding pigments, fillers and various additives to synthetic resin emulsion as the base material. It is also called synthetic resin emulsion paint and is a type of organic paint. Any paint that uses water as a solvent or a dispersion medium can be called a water-based paint, including water-soluble paint, water-dilutable paint, and water-dispersible paint (latex paint). According to different production raw materials, latex paint mainly includes polyvinyl acetate latex paint, ethylene-propylene latex paint, pure acrylic latex paint and other varieties. According to different product application environments, it can be divided into two types: interior wall latex paint and exterior wall latex paint. Latex paint is widely used in environmentally friendly coatings for housing construction because of its rapid film formation, shortened construction period, saved construction costs, excellent air permeability, environmental protection, no odor, and washability. In order to improve the quality of latex paint products, grinding equipment is usually used to grind and disperse the paint liquid, but the existing equipment is not sufficiently ground, affecting the quality of the latex paint products.

[0003] The feeding operation during the grinding and dispersing process of latex paint liquid by existing equipment is relatively cumbersome, and it is not possible to conveniently control the supply and feeding of paint liquid materials. In addition, the efficiency of grinding and dispersing paint liquid by existing equipment is low, which easily causes uneven and insufficient distribution of paint liquid material components, affecting the efficiency and practicality of the equipment for grinding and dispersing paint liquid. Utility Model Content

[0004] The purpose of the utility model is to provide a grinding device with an automatic feeding function to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grinding device with automatic feeding function, comprising a grinding box, a grinding component for dispersing and mixing the paint liquid, and a pushing component for controlling the feeding of the paint liquid, a grinding chamber inside the grinding box, a mounting chamber opened at the top of the grinding chamber, a liquid guide hole arranged at the bottom of the grinding chamber, and a liquid outlet rack arranged at the bottom of the liquid guide hole;

[0006] The grinding component includes a first motor arranged on the inner side of the installation cavity for providing power, a rotating shaft arranged on the bottom of the first motor for driving, a liquid carrying plate arranged on the upper middle part of the inner side of the grinding cavity for containing paint liquid, a grinding plate arranged on the outer side of the rotating shaft and located above the liquid carrying plate, a plurality of liquid carrying grooves evenly arranged at the bottom of the liquid carrying plate, a plurality of liquid outlet holes arranged circumferentially at the bottom of the liquid carrying grooves, a plurality of grinding strips evenly arranged at the bottom of the grinding plate, and a plurality of liquid guide holes evenly arranged at one side of the grinding plate, the grinding strips and the liquid carrying grooves are both annular, the cross-sections of the grinding strips and the liquid carrying grooves are both arc-shaped, the grinding strips and the liquid carrying grooves correspond one to one, and the grinding strips and the liquid guide holes are staggered.

[0007] Preferably, the pushing component includes a liquid conducting frame arranged on the top of the grinding box, a liquid conducting tube arranged at the bottom of the liquid conducting frame and connected to the grinding chamber, a fixed shaft passing through the liquid conducting frame for driving, a second motor arranged at one end of the fixed shaft, a pushing plate arranged on the inner side of the liquid conducting frame and located outside the fixed shaft for controlling the feeding, a plurality of liquid adding tubes evenly arranged on the top of the liquid conducting frame, and an electromagnetic valve installed on the inner side of the liquid adding tube for control, the fixed shaft is fixedly connected to the pushing plate, the pushing plate is spiral, and the liquid conducting tube passes through the mounting cavity and is connected to the grinding chamber.

[0008] Preferably, a fixed block for support is provided on one side of the liquid guiding hole, a fixed plate for cooperation is provided on one side of the fixed block, a third motor is provided on the other side of the grinding box, an output shaft for driving is provided on one side of the third motor, a rotating plate for rotation is provided at one end of the output shaft, a plurality of first abrasive strips arranged evenly are provided on one side of the rotating plate, a plurality of second abrasive strips arranged evenly are provided on the other side of the fixed plate, the first abrasive strips are meshed with the second abrasive strips, the first abrasive strips and the second abrasive strips are both annular, and the cross-sections of the first abrasive strips and the second abrasive strips are both isosceles trapezoidal.

[0009] Preferably, a guide block for guiding materials is provided at the bottom of the rotating shaft, and a plurality of scraping strips arranged circumferentially are provided at the bottom of the guide block, and the scraping strips are arranged obliquely.

[0010] Preferably, a plurality of stirring rods arranged in a circle are provided on the outside of the rotating shaft and above the guide block, and a plurality of stirring rings arranged in a circle are provided on the outside of the stirring rods, and the cross section of the stirring ring is U-shaped.

[0011] Preferably, a plurality of fixing rods arranged in a circumference are provided inside the grinding chamber and above the grinding plate, and a scraper for cleaning is provided at the bottom of the fixing rods.

[0012] Preferably, a guide plate for guiding flow is provided inside the grinding chamber and below the liquid guiding tube, and the guide plate is annular and inclined.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model includes a grinding box, a grinding chamber, a mounting chamber, a liquid guide hole, a liquid outlet rack, a first motor, a rotating shaft, a liquid carrying plate, a grinding plate, a liquid carrying tank, a liquid outlet hole, a grinding strip and a liquid guide hole. The grinding strip and the liquid carrying tank are both annular, and the cross-sections of the grinding strip and the liquid carrying tank are both arc-shaped. The grinding strip and the liquid carrying tank correspond to each other one by one, and the grinding strip and the liquid guide hole are staggered. The first motor can drive the rotating shaft to rotate, and then the rotating shaft can drive the grinding plate to rotate. The paint liquid in the grinding chamber is guided through the liquid guide hole on the grinding plate, and then the paint liquid falls into the multiple liquid carrying tanks on the liquid carrying plate through the liquid guide hole. The rotating shaft drives the grinding plate to rotate relative to the liquid carrying plate, and then the grinding plate drives the multiple grinding strips to rotate in the multiple liquid carrying tanks on the liquid carrying plate, so that the grinding strip grinds the paint liquid in the liquid carrying tank, and the ground paint liquid flows downward through the liquid outlet hole, thereby improving the efficiency and practicality of the paint grinding, and avoiding uneven or insufficient dispersion of the paint grinding.

[0015] 2. The utility model includes a liquid guide frame, a liquid guide tube, a fixed shaft, a second motor, a push plate, a liquid adding tube and a solenoid valve. The fixed shaft is fixedly connected to the push plate, the push plate is spiral, the liquid guide tube runs through the installation cavity and is connected to the grinding cavity, different materials of the paint liquid are introduced into the liquid guide frame through different liquid adding tubes, the solenoid valve can control the supply of the paint liquid material in the liquid adding tube, the second motor can drive the push plate outside the fixed shaft to rotate, the push plate can drive the paint liquid material in the liquid guide frame to push and guide, and when the push plate stops rotating, it can prevent the paint liquid material from being guided downward, thereby improving the convenience and practicality of controlling the supply and addition of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0018] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 The overall structure of the utility model Figure 2 Enlarged view of point B in the middle;

[0020] Figure 5 It is a left-side cutaway stereoscopic view of the liquid-carrying plate, the grinding plate, the liquid-carrying tank, the liquid outlet hole, the grinding strip and the liquid guide hole in the overall structure of the utility model;

[0021] Figure 6 It is a left-side sectional stereoscopic view of the fixed disk, the rotating disk, the first abrasive strip and the second abrasive strip in the overall structure of the utility model.

[0022] In the figure: 1, grinding box; 11, grinding chamber; 12, mounting chamber; 13, liquid guide hole; 14, liquid outlet rack; 15, first motor; 16, rotating shaft; 17, liquid carrier plate; 18, grinding plate; 19, liquid guide rack; 20, liquid guide tube; 21, fixed shaft; 22, second motor; 23, push plate; 24, liquid adding tube; 25, solenoid valve; 26, fixed block; 27, fixed disk; 28, third motor; 29, output shaft; 30, rotating disk; 31, guide block; 32, scraper bar; 33, stirring rod; 34, fixed rod; 35, scraper; 36, guide plate; 171, liquid carrier tank; 172, liquid outlet hole; 181, grinding bar; 182, liquid guide hole; 271, second abrasive bar; 301, first abrasive bar; 331, stirring ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0025] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 6 As shown, the embodiment of the utility model provides a grinding device with automatic feeding function, comprising a grinding box 1, a grinding component for dispersing and mixing the paint liquid, and a pushing component for controlling the feeding of the paint liquid, a grinding chamber 11 inside the grinding box 1, a mounting chamber 12 opened at the top of the grinding chamber 11, a liquid guide hole 13 provided at the bottom of the grinding chamber 11, and a liquid outlet frame 14 provided at the bottom of the liquid guide hole 13;

[0027] The grinding component includes a first motor 15 arranged on the inner side of the installation cavity 12 for providing power, a rotating shaft 16 arranged on the bottom of the first motor 15 for driving, a liquid carrying plate 17 arranged on the middle and upper part of the inner side of the grinding cavity 11 for containing paint liquid, a grinding plate 18 arranged on the outer side of the rotating shaft 16 and located above the liquid carrying plate 17, a plurality of liquid carrying grooves 171 arranged evenly at the bottom of the liquid carrying plate 17, a plurality of liquid outlet holes 172 arranged circumferentially at the bottom of the liquid carrying grooves 171, a plurality of grinding strips 181 arranged evenly at the bottom of the grinding plate 18, and a plurality of liquid guide holes 182 arranged evenly at one side of the grinding plate 18, the grinding strips 181 and the liquid carrying grooves 171 are both annular, the cross-sections of the grinding strips 181 and the liquid carrying grooves 171 are both arc-shaped, the grinding strips 181 and the liquid carrying grooves 171 correspond one to one, and the grinding strips 181 and the liquid guide holes 182 are staggered.

[0028] refer to Figure 2 The pushing component includes a liquid guide frame 19 arranged on the top of the grinding box 1, a liquid guide tube 20 arranged at the bottom of the liquid guide frame 19 and connected to the grinding chamber 11, a fixed shaft 21 penetrating the liquid guide frame 19 for driving, a second motor 22 arranged at one end of the fixed shaft 21, a pushing plate 23 arranged on the inner side of the liquid guide frame 19 and located on the outer side of the fixed shaft 21 for controlling the feeding, a plurality of liquid adding tubes 24 evenly arranged on the top of the liquid guide frame 19, and an electromagnetic valve 25 installed on the inner side of the liquid adding tube 24 for control, the fixed shaft 21 is fixedly connected to the pushing plate 23, the pushing plate 23 is spiral, and the liquid guide tube 20 penetrates the installation cavity 12 and is connected to the grinding chamber 11.

[0029] The above scheme is adopted: through the liquid guide frame 19, the liquid guide tube 20, the fixed shaft 21, the second motor 22, the push plate 23, the liquid adding tube 24 and the solenoid valve 25, the fixed shaft 21 is fixedly connected with the push plate 23, the push plate 23 is spiral, the liquid guide tube 20 passes through the installation cavity 12 and is connected with the grinding cavity 11, different materials of the paint liquid are introduced into the liquid guide frame 19 through different liquid adding tubes 24, the solenoid valve 25 can control the supply of the paint liquid material in the liquid adding tube 24, the second motor 22 can drive the push plate 23 outside the fixed shaft 21 to rotate, the push plate 23 can drive the paint liquid material in the liquid guide frame 19 to push and guide, and when the push plate 23 stops rotating, it can prevent the paint liquid material from being guided downward, thereby improving the convenience and practicality of controlling the supply and feeding of materials.

[0030] refer to Figure 2 and Figure 4A fixed block 26 for support is provided on one side of the liquid guiding through hole 13, a fixed plate 27 for cooperation is provided on one side of the fixed block 26, a third motor 28 is provided on the other side of the grinding box 1, an output shaft 29 for driving is provided on one side of the third motor 28, a rotating plate 30 for rotation is provided on one end of the output shaft 29, a plurality of first abrasive strips 301 arranged evenly are provided on one side of the rotating plate 30, a plurality of second abrasive strips 271 arranged evenly are provided on the other side of the fixed plate 27, the first abrasive strips 301 are meshed with the second abrasive strips 271, the first abrasive strips 301 and the second abrasive strips 271 are both annular, and the cross-sections of the first abrasive strips 301 and the second abrasive strips 271 are both isosceles trapezoidal.

[0031] The above scheme is adopted: through the fixed block 26, the fixed disk 27, the third motor 28, the output shaft 29, the rotating disk 30, the first abrasive strip 301 and the second abrasive strip 271, the first abrasive strip 301 and the second abrasive strip 271 are meshed and arranged, the first abrasive strip 301 and the second abrasive strip 271 are both annular, and the cross-sections of the first abrasive strip 301 and the second abrasive strip 271 are both isosceles trapezoidal, the fixed block 26 can support the fixed disk 27, and the material is discharged to the liquid outlet rack 14 through the liquid guide hole 13 at the bottom of the grinding chamber 11, and then the third motor 28 can drive the rotating disk 30 to rotate through the output shaft 29, and the rotating disk 30 rotates relative to the fixed disk 27, and the rotating disk 30 can drive the first abrasive strip 301 and the second abrasive strip 271 to move relative to each other, so that the first abrasive strip 301 and the second abrasive strip 271 can grind and disperse the paint liquid again, thereby improving the sufficiency and practicality of the material grinding and dispersion.

[0032] refer to Figure 2 A guide block 31 for guiding materials is provided at the bottom of the rotating shaft 16 , and a plurality of scraper strips 32 arranged circumferentially are provided at the bottom of the guide block 31 , and the scraper strips 32 are inclined.

[0033] The above scheme is adopted: through the guide block 31 and the scraper strip 32, the scraper strip 32 is set at an angle, the rotating shaft 16 can drive the guide block 31 to rotate, and then the guide block 31 can drive multiple scraper strips 32 to rotate, so that the scraper strip 32 scrapes and cleans the material at the bottom of the grinding chamber 11, avoiding the waste caused by the retention of paint liquid.

[0034] refer to Figure 2 A plurality of stirring rods 33 arranged in a circumference are provided on the outside of the rotating shaft 16 and above the guide block 31 , and a plurality of stirring rings 331 arranged in a circumference are provided on the outside of the stirring rods 33 , and the cross section of the stirring ring 331 is U-shaped.

[0035] The above solution is adopted: through the stirring rod 33 and the stirring ring 331, the cross section of the stirring ring 331 is U-shaped, and the rotating shaft 16 can drive the stirring rod 33 and the stirring ring 331 to stir and mix the materials, thereby improving the uniformity of the material mixing.

[0036] refer to Figure 3 A plurality of fixing rods 34 arranged in a circumference are provided inside the grinding chamber 11 and above the grinding plate 18 , and a scraper 35 for cleaning is provided at the bottom of the fixing rods 34 .

[0037] The above solution is adopted: through the fixed rod 34 and the scraper 35, the scraper 35 at the bottom of the fixed rod 34 rotates relative to the grinding plate 18, and the scraper 35 can scrape the paint liquid retained on the grinding plate 18 so that the paint liquid can be guided downward through the liquid guide hole 182.

[0038] refer to Figure 2 A guide plate 36 for guiding flow is provided inside the grinding chamber 11 and below the liquid guiding tube 20. The guide plate 36 is annular and inclined.

[0039] The above solution is adopted: through the guide plate 36, the guide plate 36 is annular and inclined, the guide plate 36 can guide the paint liquid guided downward by the liquid guide pipe 20, to avoid the paint liquid material being directly guided downward and stratified, which affects the uniformity of the paint liquid mixing.

[0040] The working principle of this utility model:

[0041] First, the solenoid valve 25 is started to control the liquid adding pipe 24 to open, and then different materials are introduced into the liquid guide frame 19 through different liquid adding pipes 24, and then the second motor 22 is started to drive the push plate 23 outside the fixed shaft 21 to rotate, and then the push plate 23 drives the paint liquid material in the liquid guide frame 19 to push, and then the paint liquid is guided to the grinding chamber 11 in the grinding box 1 through the liquid guide pipe 20. At this time, the guide plate 36 guides the paint liquid guided downward by the liquid guide pipe 20, and then the first motor 15 is started to make The rotating shaft 16 is driven to rotate, and then the rotating shaft 16 drives the grinding plate 18 to rotate, and then the paint liquid in the grinding chamber 11 is guided through the liquid guide hole 182 on the grinding plate 18, and at the same time, the scraper 35 at the bottom of the fixed rod 34 rotates relative to the grinding plate 18, and then the scraper 35 scrapes the paint liquid retained on the grinding plate 18, and then the paint liquid falls into the multiple liquid carrying grooves 171 on the liquid carrying plate 17 through the liquid guide hole 182, and at the same time, the rotating shaft 16 drives the grinding plate 18 to rotate relative to the liquid carrying plate 17, and then the grinding The grinding plate 18 drives the plurality of grinding bars 181 to rotate in the plurality of liquid-carrying grooves 171 on the liquid-carrying plate 17, and the grinding bars 181 grind the paint liquid in the liquid-carrying grooves 171, and then the grinded paint liquid flows downward through the liquid outlet 172, and at the same time, the rotating shaft 16 drives the stirring rod 33 and the stirring ring 331 to stir and mix the materials, and at this time, the rotating shaft 16 drives the guide block 31 to rotate, and then the guide block 31 drives the plurality of scraping bars 32 to rotate, and then the scraping bars 32 scrape the materials at the bottom of the grinding chamber 11. Scrape and clean, and then the material is discharged to the liquid outlet rack 14 through the liquid guide hole 13 at the bottom of the grinding chamber 11, and then the third motor 28 is started to drive the rotating disk 30 to rotate through the output shaft 29, and then the rotating disk 30 rotates relative to the fixed disk 27. At this time, the rotating disk 30 drives the first abrasive strip 301 and the second abrasive strip 271 to move relative to each other, so that the first abrasive strip 301 and the second abrasive strip 271 grind and disperse the paint liquid again, and then the paint liquid is discharged from the grinding box 1 through the liquid outlet rack 14.

[0042] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grinding device with automatic feeding function, comprising a grinding box (1), a grinding component for dispersing and mixing paint liquid, and a pushing component for controlling the feeding of paint liquid, characterized in that: The grinding box (1) comprises a grinding chamber (11) inside, a mounting chamber (12) opened at the top of the grinding chamber (11), a liquid conducting through hole (13) arranged at the bottom of the grinding chamber (11), and a liquid outlet frame (14) arranged at the bottom of the liquid conducting through hole (13); The grinding component comprises a first motor (15) disposed inside the mounting cavity (12) for providing power, a rotating shaft (16) disposed at the bottom of the first motor (15) for driving, a liquid carrier plate (17) disposed at the middle and upper part of the inner side of the grinding cavity (11) for containing paint liquid, a grinding plate (18) disposed outside the rotating shaft (16) and located above the liquid carrier plate (17), a plurality of liquid carrier grooves (171) arranged evenly at the bottom of the liquid carrier grooves (171), and a plurality of liquid carrier grooves (171) arranged circumferentially at the bottom of the liquid carrier grooves (171). A plurality of liquid outlet holes (172), a plurality of grinding strips (181) evenly arranged at the bottom of the grinding plate (18), and a plurality of liquid guide holes (182) evenly arranged at one side of the grinding plate (18), the grinding strips (181) and the liquid carrier grooves (171) are both annular, the cross-sections of the grinding strips (181) and the liquid carrier grooves (171) are both arc-shaped, the grinding strips (181) and the liquid carrier grooves (171) correspond one to one, and the grinding strips (181) and the liquid guide holes (182) are staggered.

2. A grinding device with automatic feeding function according to claim 1, characterized in that: The pushing component comprises a liquid guide frame (19) arranged on the top of the grinding box (1), a liquid guide tube (20) arranged on the bottom of the liquid guide frame (19) and connected to the grinding chamber (11), a fixed shaft (21) penetrating the liquid guide frame (19) for driving, a second motor (22) arranged at one end of the fixed shaft (21), a pushing plate (23) arranged on the inner side of the liquid guide frame (19) and located on the outer side of the fixed shaft (21) for controlling the feeding, a plurality of liquid adding tubes (24) arranged evenly on the top of the liquid guide frame (19), and a solenoid valve (25) installed on the inner side of the liquid adding tube (24) for control, the fixed shaft (21) is fixedly connected to the pushing plate (23), the pushing plate (23) is spiral, and the liquid guide tube (20) penetrates the installation chamber (12) and is connected to the grinding chamber (11).

3. The grinding device with automatic feeding function according to claim 1, characterized in that: A fixed block (26) for supporting is provided on one side of the liquid guide hole (13), a fixed plate (27) for matching is provided on one side of the fixed block (26), a third motor (28) is provided on the other side of the grinding box (1), an output shaft (29) for driving is provided on one side of the third motor (28), a rotating plate (30) for rotating is provided at one end of the output shaft (29), a plurality of first abrasive strips (301) arranged evenly are provided on one side of the rotating plate (30), a plurality of second abrasive strips (271) arranged evenly are provided on the other side of the fixed plate (27), the first abrasive strips (301) and the second abrasive strips (271) are meshed, the first abrasive strips (301) and the second abrasive strips (271) are both annular, and the cross-sections of the first abrasive strips (301) and the second abrasive strips (271) are both isosceles trapezoidal.

4. The grinding device with automatic feeding function according to claim 1, characterized in that: A guide block (31) for guiding materials is provided at the bottom of the rotating shaft (16), and a plurality of scraper strips (32) arranged in a circumference are provided at the bottom of the guide block (31), and the scraper strips (32) are arranged obliquely.

5. A grinding device with automatic feeding function according to claim 4, characterized in that: A plurality of stirring rods (33) arranged in a circumferential manner are provided on the outside of the rotating shaft (16) and above the guide block (31); a plurality of stirring rings (331) arranged in a circumferential manner are provided on the outside of the stirring rods (33); and the stirring rings (331) have a U-shaped cross section.

6. The grinding device with automatic feeding function according to claim 1, characterized in that: A plurality of fixed rods (34) arranged in a circumference are provided inside the grinding chamber (11) and above the grinding plate (18), and a scraper (35) for cleaning is provided at the bottom of the fixed rods (34).

7. The grinding device with automatic feeding function according to claim 2, characterized in that: A guide plate (36) for guiding flow is provided inside the grinding chamber (11) and below the liquid guiding tube (20); the guide plate (36) is annular and is arranged at an angle.

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