Classified screening device for cordyceps militaris strains
By using a vibrating motor-driven sieve and diversion hood structure, the problems of pressure damage and mixing in the Cordyceps militaris strain grading and screening device are solved, achieving efficient and independent strain grading and collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANXI FUNCTIONAL FOOD RES INST OF SHANXI AGRI UNIV
- Filing Date
- 2023-12-12
- Publication Date
- 2026-04-17
AI Technical Summary
Existing Cordyceps militaris strain grading and screening devices are prone to damaging the strains during the screening process, have a slow screening speed, and the strains after screening are dispersed and easily mixed, making them difficult to collect independently.
The sieve and flow divider structure driven by a vibration motor reduce strain damage and improve screening efficiency through vibration and flow divider design. The guide plate and collection mechanism ensure the independence of strain grading and collection.
This reduces bacterial strain damage, improves screening speed and efficiency, ensures independent collection of different grades of bacterial strains, and avoids mixing.
Smart Images
Figure CN121869697A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of Cordyceps militaris strain screening technology, and more specifically, to a Cordyceps militaris strain grading and screening device. Background Technology
[0002] Cordyceps militaris is a fungus belonging to the Clavicipitaceae family and the Cordyceps genus. It is also known as North Cordyceps sinensis or simply Cordyceps militaris. Cordyceps militaris is a complex composed of two parts: the stroma (the grass part) and the sclerotium (the dead part of the insect). When cultivating Cordyceps militaris, it is necessary to first screen the strains. Using a grading and screening device can select the highest quality Cordyceps militaris strains, which is beneficial to improving the nutritional content of Cordyceps militaris after cultivation and growth. However, existing grading and screening devices have the following shortcomings in the process of grading and screening Cordyceps militaris: The grading and screening device gradually presses the inoculum into the screening cylinder from the outside of the screening cylinder through an arc-shaped pressing plate. When the pressing plate squeezes the inoculum, it is easy to cause crush damage to the inoculum. Moreover, the screening speed by squeezing is relatively slow, which makes it easy for the inoculum to remain on the screening plate, reducing the efficiency of screening. At the same time, the Cordyceps militaris inoculum after screening is relatively dispersed during the discharge process, which can easily cause different grades of Cordyceps militaris inoculum to mix again, which is not conducive to the independent and centralized collection of the screened Cordyceps militaris inoculum. Summary of the Invention
[0003] The technical solution adopted by the present invention to achieve the technical objective is as follows: a Cordyceps militaris strain grading and screening device, the structure of which includes a feeding hopper, a grading and screening host, and a support frame. The feeding hopper is fixedly welded to the top middle of the grading and screening host and is connected through it. The lower outer side of the grading and screening host is welded to the upper end of the support frame. The grading and screening host includes a screening machine, a collecting mechanism, and a drawer. The feeding hopper is fixedly welded to the top middle of the screening machine and is connected through it. The collecting mechanism is installed on the outer side of the screening machine, and a drawer is installed on the inner side of the bottom of the screening machine. The lower outer side of the screening machine is welded to the upper end of the support frame.
[0004] As a further improvement of the present invention, the screening machine includes a machine shell, a sieve, a conduction rod, a vibration motor, and a machine shell cover. The feed hopper is fixedly welded to the middle of the top of the machine shell and is connected through. The outer side of the middle and lower part of the machine shell is welded to the upper end of the support frame. A collection mechanism is installed on the outer side of the machine shell. A sieve is installed inside the machine shell, and the collection mechanism is located outside the sieve. The vibration motor is installed inside the machine shell cover, and both the vibration motor and the machine shell cover are installed at the lower end inside the machine shell. The output end of the vibration motor is fixed to the lower end of the conduction rod, and the conduction rod passes through the middle of the sieve and is welded. A drawer is installed on the inner side of the bottom of the machine shell. There are two sieves in total, and they are vertically distributed at the upper and middle positions inside the machine shell. And the two sieves are mechanically connected through the conduction rod, so that the conduction rod can drive the two sieves to vibrate at the same time. The upper end of the machine shell cover is in a hemispherical structure.
[0005] As a further improvement of the present invention, the sieve includes a shunt cover, a vibrating sieve plate, a guide plate, and a discharge port. The shunt cover is welded to the top of the conduction rod, and the shunt cover is located directly above the middle of the vibrating sieve plate. A guide plate is provided outside the vibrating sieve plate. The conduction rod passes through the middle of the vibrating sieve plate and is welded. The outside of the vibrating sieve plate is connected to the discharge port through the guide plate. The guide plate is provided on the inner wall of the machine shell. The discharge port passes through the inside of the machine shell, and the collection mechanism is located outside the discharge port. The shunt cover is in a conical structure, and the shunt cover is vibrated by the conduction rod.
[0006] As a further improvement of the present invention, the vibrating sieve plate includes a support frame, a shunt strip, a screening strip, and an extrusion strip. The conduction rod passes through the middle of the support frame and is welded. The shunt strip is welded to the middle of the upper end of the support frame. The screening strip is provided inside the support frame. The extrusion strip is installed on the outside of the support frame, and the support frame is connected to the guide plate through the extrusion strip. The support frame is in a "field" - shaped structure, and a "cross" - shaped shunt strip is provided at the "cross" part in the middle of the support frame. There are four groups of screening strips, and the four groups of screening strips are annularly arrayed in the four space parts of the "field" - shaped support frame with the center of the support frame as the center of the circle.
[0007] As a further improvement of the present invention, the collection mechanism includes an external frame, a magnetic strip, a clamping rod, a guide groove, and a disassembly mechanism. The external frame is welded to the outside of the machine shell, and the external frame is located outside the discharge port. A magnetic strip is provided above the outer end of the external frame, and a clamping rod is provided above the magnetic strip. The guide groove is embedded inside the external frame. The disassembly mechanism is installed inside the external frame by clearance fit, and the clamping rod passes through the inside of the lower end of the outside of the disassembly mechanism by clearance fit. There are five clamping rods, and they are horizontally distributed on the upper surface of the magnetic strip. The five clamping rods can be inserted into the inside of the lower end of the outside of the disassembly mechanism.
[0008] As a further improvement of the present invention, the splitting mechanism includes a collection groove, a sliding rod, a heightening plate, and a lower guide plate. The collection groove is installed inside the outer frame with a clearance fit, and a sliding rod is provided on the outside of the collection groove. The sliding rod is slidably installed inside the guide groove. The heightening plate is welded to the outer side of the upper end of the lower guide plate, and the lower guide plate is located at the upper end of the outer side of the collection groove. The locking rod is inserted through the lower end of the outer side of the lower guide plate with a clearance fit. There are two sliding rods, which are located on the outer sides of the left and right ends of the collection groove. The inclined surface of the lower guide plate is located on the outer side of the collection groove, and the inclined surface of the lower guide plate is an inward inclined guide.
[0009] The beneficial effects of this invention are as follows: 1. The vibrating diversion hood disperses and discharges the Cordyceps militaris spawn from above, improving the overall contact between the spawn and the vibrating screen plate below. The vibrating screen plate performs vibration and sieving of the Cordyceps militaris spawn, minimizing damage to the spawn. At the same time, the upper vibrating screen plate has a smaller sieving space than the middle vibrating screen plate, resulting in higher quality Cordyceps militaris spawn sieved by the upper vibrating screen plate, thus achieving the effect of graded sieving. 2. The diversion strips can divert and conduct the Cordyceps militaris spores falling into the middle of the support frame outwards, improving the screening effect of the Cordyceps militaris spores in contact with the screening strips, preventing the Cordyceps militaris spores from staying in the middle of the support frame, and the four sets of screening strips in different directions can discharge the screened Cordyceps militaris spores from the four outer directions at the same time, avoiding the blockage caused by the Cordyceps militaris spores being discharged from only one direction, thus improving the efficiency of screening. 3. During the vibration process, the support frame is elastically squeezed and connected by external extrusion strips to ensure the connection between the support frame and the guide plate. This allows the screened Cordyceps militaris inoculum to be discharged through the guide plate into the outlet and finally fall into the corresponding collection mechanism for collection. The collection mechanism collects the screened Cordyceps militaris inoculum. 4. The Cordyceps militaris spawn is discharged from the outlet. The heightening plate limits and blocks the Cordyceps militaris spawn, and the inclined guide plate guides it, so that all the Cordyceps militaris spawn is discharged into the corresponding collection tank for centralized collection, avoiding the mixing of the screened Cordyceps militaris spawn and improving the effect of independent collection. 5. Reinstall the collection trough inside the outer frame. It can be locked into the lower outer end of the splitting mechanism by the five locking rods, and the lower outer end of the splitting mechanism is magnetically connected by a magnetic strip. This improves the firmness of the splitting mechanism when it is locked inside the upper part of the outer frame, ensuring that the collection trough can continue to collect Cordyceps militaris fungi. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of a Cordyceps militaris strain grading and screening device according to the present invention.
[0011] Figure 2 This is a schematic diagram of the three-dimensional and frontal planar structure of the graded screening host of the present invention.
[0012] Figure 3 This is a frontal view of the internal structure of the screening machine of the present invention.
[0013] Figure 4 This is a top-view partial perspective structural diagram of the sieve of the present invention.
[0014] Figure 5 This is a top view of the vibrating screen plate of the present invention.
[0015] Figure 6 This is a three-dimensional disassembled structural diagram of the collecting mechanism of the present invention.
[0016] Figure 7 This is a three-dimensional structural diagram of the splitting mechanism of the present invention.
[0017] In the diagram: Feed hopper - D, Grading and screening host - S, Support frame - J, Screening machine - S4, Collection mechanism - S6, Drawer - S1, Machine casing - S49, Screener - S41, Transmission rod - S48, Vibrating motor - S43, Machine casing cover - S45, Diverter hood - 1F, Vibrating screen plate - 1W, Guide plate - 1D, Discharge port - 1P, Support frame - W3, Diverter bar - W1, Screening bar - W8, Extrusion bar - W6, External frame - S62, Magnetic strip - S69, Clamping rod - S66, Guide groove - S67, Splitting mechanism - S65, Collection groove - 5K, Sliding rod - 5G, Heightening plate - 5B, Lower guide plate - 5D. Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings: Example
[0019] As attached Figure 1 To be continued Figure 5 As shown: This invention discloses a Cordyceps militaris strain grading and screening device, the structure of which includes a feeding hopper D, a grading and screening host S, and a support frame J. The feeding hopper D is fixedly welded to the top middle of the grading and screening host S and is connected through it. The lower outer side of the grading and screening host S is welded to the upper end of the support frame J. The grading and screening host S includes a screening machine s4, a collecting mechanism s6, and a drawer s1. The feeding hopper D is fixedly welded to the top middle of the screening machine s4 and is connected through it. The collecting mechanism s6 is installed on the outer side of the screening machine s4, and the drawer s1 is installed on the inner side of the bottom of the screening machine s4. The lower outer side of the screening machine s4 is welded to the upper end of the support frame J.
[0020] The screening machine s4 includes a housing s49, a screener s41, a guide rod s48, a vibrating motor s43, and a housing cover s45. The feed hopper D is fixedly welded to the top center of the housing s49 and is connected through it. The lower outer side of the housing s49 is welded to the upper end of the support frame J. A collection mechanism s6 is installed on the outer side of the housing s49. The screener s41 is installed inside the housing s49, and the collection mechanism s6 is located outside the screener s41. The vibrating motor s43 is installed inside the housing cover s45, and both the vibrating motor s43 and the housing cover s45 are installed inside the lower end of the housing s49. The output end of the vibrating motor s43 is fixed to the lower end of the guide rod s48, and the guide rod s48 passes through the middle of the screener s41 and is welded together. A drawer s1 is installed on the inner side of the bottom of the housing s49. Two sieves s41 are provided, vertically distributed at the upper and middle positions inside the casing s49. The two sieves s41 are mechanically connected by a transmission rod s48, allowing the transmission rod s48 to simultaneously drive both sieves s41 to vibrate and sieve the Cordyceps militaris spawn. Vibration sieve maximally minimizes damage to the Cordyceps militaris spawn. Furthermore, the upper sieve s41 has a smaller sieving space than the middle sieve s41, resulting in higher quality Cordyceps militaris spawn sieved by the upper sieve s41, thus achieving a graded sieve grading effect. The upper part of the casing s45 has a hemispherical structure, which protects the vibration motor s43 and facilitates the downward transmission of the sieved Cordyceps militaris spawn into the drawer s1 for collection.
[0021] The sieve separator s41 includes a flow divider 1f, a vibrating screen plate 1w, a guide plate 1d, and a discharge port 1p. The flow divider 1f is welded to the top of the transmission rod s48 and is located in the center directly above the vibrating screen plate 1w. The guide plate 1d is provided on the outer side of the vibrating screen plate 1w. The transmission rod s48 passes through the middle of the vibrating screen plate 1w and is welded to it. The outer side of the vibrating screen plate 1w is connected to the discharge port 1p through the guide plate 1d. The guide plate 1d is provided on the inner wall of the housing s49. The discharge port 1p passes through the inside of the housing s49, and the collection mechanism s6 is located on the outer side of the discharge port 1p. The diversion hood 1f has a conical structure. The diversion hood 1f is driven to vibrate by the transmission rod s48, so that the diversion hood 1f disperses and discharges the Cordyceps militaris inoculum that enters from the feed hopper D into the upper part of the casing s49. This improves the comprehensiveness of the contact between the Cordyceps militaris inoculum and the vibrating screen plate 1w below, and improves the efficiency of the vibrating screen plate 1w in screening the Cordyceps militaris inoculum.
[0022] Among them, the vibrating sieve plate 1w includes a support frame w3, a shunt bar w1, a screening bar w8, and an extrusion bar w6. The conduction rod s48 penetrates through the middle of the support frame w3 and is welded. A shunt bar w1 is welded to the middle of the upper end of the support frame w3. The screening bar w8 is arranged inside the support frame w3. An extrusion bar w6 is installed on the outside of the support frame w3, and the support frame w3 is connected to the guide plate 1d through the extrusion bar w6; The support frame w3 is in a "field" - shaped structure, and there is a "cross" - shaped shunt bar w1 at the "cross" part in the middle of the support frame w3. Through the shunt bar w1, the cordyceps militaris strains falling in the middle of the support frame w3 can be divergently conducted outwards, improving the screening effect of the cordyceps militaris strains contacting the screening bar w8, and preventing the cordyceps militaris strains from staying in the middle part of the support frame w3. There are four groups of screening bars w8, and the four groups of screening bars w8 are annularly arrayed with the center of the support frame w3 as the center in the four space parts of the "field" - shaped support frame w3. Through the four groups of screening bars w8 in different directions, the screened cordyceps militaris strains can be discharged simultaneously from the four outer positions, preventing the cordyceps militaris strains from being discharged from only a single position and getting blocked, and improving the screening efficiency. The specific usage mode and function of this embodiment: In this invention, the cordyceps militaris strains to be classified and screened are put into the screening machine s4 from the feed hopper D. At the same time, the internal vibration motor s43 is started to generate vibration, and the vibration is conducted through the conduction rod s48, making the shunt cover 1f and the sieve separator s41 vibrate. Through the vibrating shunt cover 1f, the cordyceps militaris strains above are dispersed and discharged downward, improving the comprehensiveness of the contact between the cordyceps militaris strains and the lower vibrating sieve plate 1w. The vibrating sieve plate 1w vibrates and screens the cordyceps militaris strains. Vibration screening can minimize the damage to the cordyceps militaris strains caused by pressing. At the same time, the screening space of the upper vibrating sieve plate 1w is smaller than that of the middle vibrating sieve plate 1w, making the cordyceps militaris strains screened out by the upper vibrating sieve plate 1w more high - quality, thus achieving the effect of classification and screening. At the same time, during the vibration screening of the cordyceps militaris strains by the vibrating sieve plate 1w, through the shunt bar w1, the cordyceps militaris strains falling in the middle of the support frame w3 can be divergently conducted outwards, improving the screening effect of the cordyceps militaris strains contacting the screening bar w8, preventing the cordyceps militaris strains from staying in the middle part of the support frame w3, and through the four groups of screening bars w8 in different directions, the screened cordyceps militaris strains can be discharged simultaneously from the four outer positions, preventing the cordyceps militaris strains from being discharged from only a single position and getting blocked, and improving the screening efficiency. And during the vibration of the support frame w3, elastic extrusion connection is carried out through the external extrusion bar w6 to ensure the connection penetration between the support frame w3 and the guide plate 1d, so that the screened cordyceps militaris strains are discharged through the guide plate 1d into the discharge port 1p and finally fall into the corresponding collection mechanism s6 for collection. Example
[0023] As attached Figure 6 To be continued Figure 7 As shown: The collecting mechanism s6 includes an outer frame s62, a magnetic strip s69, a locking rod s66, a guide groove s67, and a splitting mechanism s65. The outer frame s62 is welded to the outside of the housing s49 and is located outside the outlet 1p. A magnetic strip s69 is provided above the outer end of the outer frame s62, and a locking rod s66 is provided at the upper end of the magnetic strip s69. A guide groove s67 is embedded in the inner side of the outer frame s62. The splitting mechanism s65 is installed inside the outer frame s62 with a clearance fit, and the locking rod s66 passes through the lower outer end of the splitting mechanism s65 with a clearance fit. Five locking rods s66 are provided and are distributed laterally on the upper surface of the magnetic strip s69. The five locking rods s66 can be locked into the lower outer end of the splitting mechanism s65, and the magnetic strip s69 magnetically connects the lower outer end of the splitting mechanism s65, improving the firmness of the splitting mechanism s65 in the upper inner part of the outer frame s62 and the ease of disassembly.
[0024] The splitting mechanism s65 includes a collection groove 5k, a sliding rod 5g, a heightening plate 5b, and a lower guide plate 5d. The collection groove 5k is installed inside the outer frame s62 with a clearance fit, and the sliding rod 5g is provided on the outside of the collection groove 5k. The sliding rod 5g is slidably installed inside the guide groove s67. The heightening plate 5b is welded to the outer side of the upper end of the lower guide plate 5d, and the lower guide plate 5d is located on the upper side of the collection groove 5k. The locking rod s66 passes through the lower side of the lower guide plate 5d with a clearance fit. Two sliding rods 5g are provided and are located on the outer sides of the left and right ends of the collection trough 5k. The two sliding rods 5g are slidably connected to the guide grooves 67 on both sides of the outer frame 62 to ensure that the collection trough 5k can be smoothly inserted into the outer frame 62. The inclined surface of the lower guide plate 5d is located outside the collection trough 5k and the inclined surface of the lower guide plate 5d is inclined inward. The heightening plate 5b limits and blocks the Cordyceps militaris spores discharged from the discharge port 1p during the screening process. With the inclined guidance of the lower guide plate 5d, it is ensured that all Cordyceps militaris spores are discharged into the corresponding collection trough 5k for centralized collection, avoiding the mixing of the screened Cordyceps militaris spores and improving the effect of independent collection. The specific usage and function of this embodiment are as follows: In this invention, the collecting mechanism s6 collects the screened Cordyceps militaris spawn. The spawn is discharged from the outlet 1p. After discharge, the raising plate 5b limits and blocks the spawn, and the lower guide plate 5d tilts and guides it, ensuring all the spawn is collected into the corresponding collecting trough 5k for centralized collection. This prevents the screened spawn from mixing again and improves the efficiency of independent collection. When a large amount of spawn is collected in the collecting trough 5k, it can be detached from the outer frame s62. During detachment, the raising plate 5b is pulled upwards, and the sliding rod 5g and... The guide groove s67, when in contact with the outside frame s62, allows the collection trough 5k to move vertically outward, preventing the collected Cordyceps militaris fungi from falling out. After processing the Cordyceps militaris fungi inside the collection trough 5k, it is reinstalled back into the outside frame s62. Five locking rods s66 engage with the lower outer end of the splitting mechanism s65, and magnetic strips s69 magnetically connect the lower outer end of the splitting mechanism s65, improving the stability of the splitting mechanism s65's engagement with the upper inner end of the outside frame s62 and ensuring that the collection trough 5k can continue collecting Cordyceps militaris fungi. Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solutions described in this invention, or by designing similar technical solutions by those skilled in the art under the inspiration of the technical solutions described in this invention, falls within the protection scope of this invention.
Claims
1. A Cordyceps militaris strain grading and screening device, comprising a feeding hopper (D), a grading and screening main unit (S), and a support frame (J), wherein the feeding hopper (D) is fixedly welded to the top center of the grading and screening main unit (S) and is connected through it, and the lower outer side of the grading and screening main unit (S) is welded to the upper end of the support frame (J), characterized in that: The grading and screening host (S) includes a screening machine (s4), a collection mechanism (s6), and a drawer (s1). The feed hopper (D) is fixedly welded to the top center of the screening machine (s4) and is connected through it. The collection mechanism (s6) is installed on the outside of the screening machine (s4), and the drawer (s1) is installed on the bottom inner side of the screening machine (s4). The lower outer side of the screening machine (s4) is welded to the upper end of the support frame (J).
2. The Cordyceps militaris strain classification screening device according to claim 1, characterized in that: The screening machine (s4) includes a casing (s49), a screener (s41), a guide rod (s48), a vibrating motor (s43), and a casing cover (s45). The feed hopper (D) is fixedly welded to the top center of the casing (s49) and is connected through it. The lower outer side of the casing (s49) is welded to the upper end of the support frame (J). A collecting mechanism (s6) is installed on the outer side of the casing (s49). The screener (s41) is installed inside the casing (s49) and collects... The collecting mechanism (s6) is located outside the screener (s41). The vibrating motor (s43) is installed inside the housing (s45). Both the vibrating motor (s43) and the housing (s45) are installed inside the lower end of the housing (s49). The output end of the vibrating motor (s43) is fixed to the lower end of the guide rod (s48). The guide rod (s48) passes through the middle of the screener (s41) and is welded together. A drawer (s1) is installed on the inner side of the bottom of the housing (s49).
3. The device for screening Cordyceps militaris strains according to claim 2, wherein: The sieve separator (s41) includes a flow divider (1f), a vibrating screen plate (1w), a guide plate (1d), and a discharge port (1p). The flow divider (1f) is welded to the top of the transmission rod (s48) and is located in the center directly above the vibrating screen plate (1w). The guide plate (1d) is provided on the outer side of the vibrating screen plate (1w). The transmission rod (s48) passes through the middle of the vibrating screen plate (1w) and is welded to it. The outer side of the vibrating screen plate (1w) is connected to the discharge port (1p) through the guide plate (1d). The guide plate (1d) is provided on the inner wall of the housing (s49). The discharge port (1p) passes through the inside of the housing (s49), and the collection mechanism (s6) is located on the outer side of the discharge port (1p).
4. The device for screening and grading of Cordyceps militaris spores according to claim 3, wherein: The vibrating screen plate (1w) includes a support frame (w3), a diverting bar (w1), a screening bar (w8), and an extrusion bar (w6). The transmission rod (s48) passes through the middle of the support frame (w3) and is welded together. The diverting bar (w1) is welded to the middle of the upper end of the support frame (w3). The screening bar (w8) is located inside the support frame (w3). The extrusion bar (w6) is installed on the outside of the support frame (w3), and the support frame (w3) is connected to the guide plate (1d) through the extrusion bar (w6).
5. The device for screening and grading of Cordyceps militaris spores according to claim 3, wherein: The collecting mechanism (s6) includes an outer frame (s62), a magnetic strip (s69), a locking rod (s66), a guide groove (s67), and a splitting mechanism (s65). The outer frame (s62) is welded to the outside of the housing (s49) and is located outside the outlet (1p). A magnetic strip (s69) is provided above the outer end of the outer frame (s62), and a locking rod (s66) is provided at the upper end of the magnetic strip (s69). A guide groove (s67) is embedded in the inner side of the outer frame (s62). The splitting mechanism (s65) is installed inside the outer frame (s62) with a clearance fit, and the locking rod (s66) passes through the lower outer end of the splitting mechanism (s65) with a clearance fit.
6. The Cordyceps militaris strain classification screening device according to claim 5, characterized in that: The splitting mechanism (s65) includes a collection groove (5k), a sliding rod (5g), a heightening plate (5b), and a lower guide plate (5d). The collection groove (5k) is installed inside the outer frame (s62) with a clearance fit, and the sliding rod (5g) is provided on the outside of the collection groove (5k). The sliding rod (5g) is slidably installed inside the guide groove (s67). The heightening plate (5b) is welded to the outer side of the upper end of the lower guide plate (5d), and the lower guide plate (5d) is located on the upper side of the collection groove (5k). The locking rod (s66) is inserted through the lower side of the lower guide plate (5d) with a clearance fit.