Raw material mixing tank for fermentation

Abstract

The raw material mixing tank comprises a mixing tank body, a stirring mechanism is arranged on the mixing tank body, a mounting groove is formed in one side of the stirring mechanism, an adjusting mechanism is arranged in the mounting groove, a telescopic frame is movably connected to the adjusting mechanism, and a movable connecting strip is movably connected to the side, away from the adjusting mechanism, of the telescopic frame; a cleaning strip is slidably connected into the movable connecting strip, and the side, away from the movable connecting strip, of the cleaning strip abuts against the inner wall of the mixing tank body; when the scheme is used, after the mixing tank body is used, the adjusting mechanism is started to control the extension of the telescopic frame to be matched with the movable connecting strip, so that the cleaning strip can be controlled to abut against the inner wall of the mixing tank body, and the cleaning strip can be controlled to move to scrape and clean the inner wall of the mixing tank body by starting the stirring mechanism; after the inner wall of the mixing tank body is scraped and cleaned by the cleaning strip, a worker can use a high-pressure water gun to wash, so that residues of bacteria, foreign matters or other pollutants can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of mixing tanks, and in particular to a raw material mixing tank for fermentation. Background Art

[0002] The raw material mixing tank is a container used to mix and store fermentation raw materials. The raw material mixing tank is usually made of stainless steel and has a sealing performance to ensure temperature and humidity control during the fermentation process. The raw material mixing tank is widely used in the food and pharmaceutical industries to make fermentation products such as yogurt, alcohol, and medicine. After the raw materials are mixed and fermented in the raw material mixing tank, it is usually necessary to clean the inside of the tank.

[0003] The utility model with announcement number CN214438214U discloses a stirring device for a mixed raw material fermentation tank, including a main body, a cleaning device, a stirring assembly and a conveying assembly, the main body includes a shell and a cover, a cleaning device is fixedly installed on the bottom of the cover, the cleaning device includes a first motor, a first rotating shaft is fixedly installed on the bottom of the first motor, a connecting rod is fixedly installed on the left side of the first rotating shaft, a connecting block is fixedly installed on the left side of the connecting rod, a shell is fixedly installed on the left side of the connecting block, a brush is fixedly installed on the left side of the shell, and a stirring assembly is fixedly installed on the right side of the shell, and the stirring assembly includes a second motor. The utility model is convenient for cleaning internal raw materials when in use, does not require manual disassembly for cleaning, is convenient for operators to use, does not require users to carry raw materials up and down when in use, reduces the user's work intensity, and improves work efficiency.

[0004] When the above technical solution is in use, by connecting an external power supply, the first motor drives the first rotating shaft to rotate left and right, and the first rotating shaft drives the connecting rod to rotate. The connecting block fixed on the outer surface of the connecting rod simultaneously drives the brush to clean the inner wall. When cleaning, water is allowed to enter the interior, and the inner wall is brushed by rotating the brush, and then discharged from the discharge port, so that the stirring device for the mixed raw material fermentation tank is convenient for cleaning the internal raw materials when in use, and does not need to be manually disassembled for cleaning, which is convenient for the operator to use. However, the above scheme uses a brush for cleaning, and bacteria, foreign matter or other contaminants are likely to remain inside the brush after cleaning. These residues may affect the quality of the next batch of products and are not conducive to actual use. Therefore, those skilled in the art provide a raw material mixing tank for fermentation to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the problem that in the cleaning method using a brush proposed in the above background technology, bacteria, foreign matter or other contaminants are easily left inside the brush after cleaning, and these residues may affect the quality of the next batch of products, the present application provides a raw material mixing tank for fermentation.

[0006] The present application provides a raw material mixing tank for fermentation using the following technical solution:

[0007] A raw material mixing tank for fermentation comprises a mixing tank body, wherein a stirring mechanism is arranged on the mixing tank body, a mounting groove is arranged on one side of the stirring mechanism, an adjusting mechanism is arranged inside the mounting groove, a telescopic frame is movably connected to the adjusting mechanism, a movable connecting strip is movably connected to the telescopic frame on a side away from the adjusting mechanism, a cleaning strip is slidably connected to the inside of the movable connecting strip, and a side of the cleaning strip away from the movable connecting strip abuts against an inner wall of the mixing tank body.

[0008] By adopting the above technical scheme, the raw materials can be stirred and mixed by starting the adjusting mechanism. After the mixing tank body is used up, the adjusting mechanism can be started to control the extension of the telescopic frame to cooperate with the movable connecting strip, so as to control the cleaning strip to abut against the inner wall of the mixing tank body. By starting the stirring mechanism, the movement of the cleaning strip can be controlled to scrape and clean the inner wall of the mixing tank body. After scraping and cleaning the inner wall of the mixing tank body with the cleaning strip, personnel can use a high-pressure water gun to rinse it, thereby reducing the residue of bacteria, foreign matter or other contaminants, and minimizing the impact on the quality of the next batch of products.

[0009] Preferably, the stirring mechanism includes a first motor fixedly connected to the upper surface of the mixing tank body, the output end of the first motor passes through the mixing tank body and is fixedly connected to a shaft rod, the lower end surface of the shaft rod is fixedly connected to the bottom of the inner wall of the mixing tank body, the mounting groove is opened on one side of the shaft rod, and the outer wall of the shaft rod is evenly and fixedly connected with a plurality of stirring paddles.

[0010] By adopting the above technical solution, starting the first motor can drive the shaft to rotate and control the movement of several stirring paddles to stir the raw materials.

[0011] Preferably, the adjustment mechanism includes a first mounting plate and a second mounting plate located inside the mounting groove, the upper surface of the first mounting plate is fixedly connected to the second motor, the output end of the second motor passes through the first mounting plate and is fixedly connected to a reverse threaded rod, the lower end surface of the reverse threaded rod is rotatably connected to the upper surface of the second mounting plate, the external threaded teeth of the outer walls at both ends of the reverse threaded rod are arranged in opposite directions, and the outer wall of the reverse threaded rod is threadedly connected to the inner wall of the telescopic frame.

[0012] By adopting the above technical solution, the installation positions of the second motor and the reverse threaded rod can be limited by the first mounting plate and the second mounting plate, and when the second motor is started, the reverse threaded rod can be controlled to rotate and adjust the telescopic frame for telescoping.

[0013] Preferably, the telescopic frame includes a first moving head and a second moving head respectively threadedly connected to the two ends of the reverse threaded rod, one side of the first moving head and the second moving head are both in contact with the inner wall of the shaft rod, the first moving head and the second moving head are respectively hinged with a first telescopic strip and a second telescopic strip at one end away from the shaft rod, the middle part of the first telescopic strip and the middle part of the second telescopic strip are hinged to each other, the first moving head and the second moving head are respectively hinged with a first connecting head and a second connecting head at one end away from the reverse threaded rod, and the first connecting head and the second connecting head are respectively slidably connected to the movable connecting strip at one end away from the reverse threaded rod by bolts.

[0014] By adopting the above technical solution, the first moving head and the second moving head cooperate with the rotating reverse threaded rod to control the first telescopic strip and the second telescopic strip to rotate around the middle hinge part. Through the rotation adjustment of the first telescopic strip and the second telescopic strip, the position of the movable connecting strip installed through the first connecting head and the second connecting head can be adjusted.

[0015] Preferably, the movable connecting strip comprises a rectangular strip having an installation opening passing through the rectangular strip, one end of the first connecting head and the second connecting head being slidably connected to the installation opening via bolts respectively, a slide groove being provided on one side of the rectangular strip, and one side of the cleaning strip being located inside the slide groove.

[0016] By adopting the above technical solution, the installation opening cooperates with the bolt to limit the installation position between one end of the first connector and the second connector and the rectangular strip, and the slide groove can limit the installation position of the cleaning strip.

[0017] Preferably, the cleaning strip comprises a mounting strip slidably connected to the inside of the slide groove, one side of the mounting strip is fixedly connected to a rubber scraper strip, one side of the rubber scraper strip abuts against the inner wall of the mixing tank body, and the upper surface of the mounting strip is fixedly connected to a hand-pull plate.

[0018] By adopting the above technical solution, the installation strip cooperates with the slide groove to limit the installation position of the rubber scraper strip, and the inner wall of the mixing tank body can be scraped and cleaned by the abutment movement of the rubber scraper strip and the inner wall of the mixing tank body.

[0019] Preferably, the shaft rod is symmetrically fixedly connected to a conduit on one side close to the rectangular bar, the mounting groove is located between the symmetrically arranged conduits, the inside of the conduit is slidably connected to a guide rod, and one end of the guide rod away from the conduit is fixedly connected to one side of the rectangular bar.

[0020] By adopting the above technical solution, the guide tube and the guide rod cooperate to guide the movement of the rectangular strip.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] 1. The raw material mixing tank for fermentation can stir and mix the raw materials by starting the adjustment mechanism. After the mixing tank body is used, the adjustment mechanism can be started to control the telescopic frame to extend. The movement of the connecting strip can control the cleaning strip to abut against the inner wall of the mixing tank body. The stirring mechanism can be started to control the movement of the cleaning strip to scrape and clean the inner wall of the mixing tank body. The present application uses the cleaning strip to replace the brush for cleaning. After the cleaning strip is used to scrape and clean the inner wall of the mixing tank body, the personnel can use a high-pressure water gun to rinse it, thereby reducing the residue of bacteria, foreign matter or other contaminants, and minimizing the impact on the quality of the next batch of products.

[0023] 2. The raw material mixing tank for fermentation can start the first motor to drive the shaft to rotate and control a plurality of stirring paddles to move and stir the raw materials. The first mounting plate and the second mounting plate can limit the installation position of the second motor and the reverse threaded rod. When the second motor is started, the reverse threaded rod can be controlled to rotate. The first moving head and the second moving head cooperate with the rotating reverse threaded rod to control the first telescopic bar and the second telescopic bar to rotate around the hinged part in the middle. The position of the movable connecting bar installed through the first connecting head and the second connecting head can be adjusted by adjusting the rotation of the first telescopic bar and the second telescopic bar.

[0024] 3. The raw material mixing tank used for fermentation has an installation opening that cooperates with the bolts to limit the installation position between one end of the first connector and the second connector and the rectangular bar. The installation bar cooperates with the slide groove to limit the installation position of the rubber scraper. The inner wall of the mixing tank can be scraped and cleaned by the abutment movement of the rubber scraper and the inner wall of the mixing tank. The conduit cooperates with the guide rod to guide the movement of the rectangular bar, thereby enhancing the stability of the rectangular bar when moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0026] Figure 2 is a schematic cross-sectional structural diagram in an embodiment of the present application;

[0027] Figure 3 This is an embodiment of the present application Figure 2 A schematic diagram of the structure enlargement at point A;

[0028] Figure 4 It is a schematic diagram of the structure of the mobile connection bar in the embodiment of the present application.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. mixing tank body; 2. stirring mechanism; 201. first motor; 202. shaft rod; 203. stirring paddle; 3. mounting groove; 4. adjusting mechanism; 401. first mounting plate; 402. second mounting plate; 403. second motor; 404. reverse threaded rod; 5. telescopic frame; 501. first moving head; 502. second moving head; 503. first telescopic strip; 504. second telescopic strip; 505. first connecting head; 506. second connecting head; 6. movable connecting strip; 601. rectangular strip; 602. mounting port; 603. slide groove; 7. cleaning strip; 701. mounting strip; 702. rubber scraper strip; 703. hand pull plate; 8. conduit; 9. guide rod. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The present application embodiment discloses a raw material mixing tank for fermentation. Figure 1 , Figure 2 and Figure 3 The raw material mixing tank for fermentation comprises a mixing tank body 1, a stirring mechanism 2 is arranged on the mixing tank body 1, a mounting groove 3 is opened on one side of the stirring mechanism 2, an adjusting mechanism 4 is arranged inside the mounting groove 3, a telescopic frame 5 is movably connected to the adjusting mechanism 4, a side of the telescopic frame 5 away from the adjusting mechanism 4 is movably connected to a movable connecting strip 6, a cleaning strip 7 is slidably connected inside the movable connecting strip 6, and a side of the cleaning strip 7 away from the movable connecting strip 6 is in contact with the inner wall of the mixing tank body 1.

[0032] In the present embodiment, the interior of the mixing tank body 1 provided in the raw material mixing tank for fermentation is used for fermentation and mixing of the raw materials. By starting the stirring mechanism 2, the raw materials inside the mixing tank body 1 can be stirred and mixed. The installation position of the adjusting mechanism 4 can be limited by the provided installation groove 3. The adjusting mechanism 4 is movably connected with a telescopic frame 5. When the adjusting mechanism 4 is started, the telescopic frame 5 can be controlled to be telescopically adjusted. The telescopic movement of the telescopic frame 5 can control the movement of the movable connecting strip 6. When the telescopic frame 5 is extended, the cleaning strip 7 can be controlled to abut against the inner wall of the mixing tank body 1 by the movable connecting strip 6. Therefore, by starting the stirring mechanism 2, the cleaning strip 7 can be controlled to move to scrape and clean the inner wall of the mixing tank body 1. When the raw materials inside the mixing tank body 1 are fermented and mixed, the telescopic frame 5 can be controlled to retract by the adjusting mechanism 4, and the telescopic frame 5 cooperates with the movable connecting strip 6 to move the cleaning strip 7 away from the inner wall of the mixing tank body 1, and the cleaning strip 7 is slidably connected with it, so that when the cleaning strip 7 is worn, it is convenient for personnel to disassemble and replace the cleaning strip 7. The cleaning strip 7 set by the present application can replace the brush for cleaning. After the inner wall of the mixing tank body 1 is scraped and cleaned by the cleaning strip 7, the personnel can use a high-pressure water gun to rinse it, thereby reducing the residue of bacteria, foreign matter or other contaminants, and avoiding the impact on the quality of the next batch of products as much as possible, making the present application more conducive to practical use.

[0033] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, the stirring mechanism 2 includes a first motor 201 fixedly connected to the upper surface of the mixing tank body 1, the output end of the first motor 201 passes through the mixing tank body 1 and is fixedly connected to a shaft 202, the lower end surface of the shaft 202 is fixedly connected to the bottom of the inner wall of the mixing tank body 1, the mounting groove 3 is opened on one side of the shaft 202, and the outer wall of the shaft 202 is evenly fixedly connected with a plurality of stirring paddles 203.

[0034] In this embodiment, starting the first motor 201 can control the movement of the plurality of stirring paddles 203 by driving the shaft 202 to rotate, and the raw materials in the mixing tank 1 can be stirred through the movement of the stirring paddles 203 .

[0035] In a further preferred embodiment of the present invention, Figure 2 and Figure 3As shown, the adjustment mechanism 4 includes a first mounting plate 401 and a second mounting plate 402 located inside the mounting groove 3, the upper surface of the first mounting plate 401 is fixedly connected to the second motor 403, the output end of the second motor 403 passes through the first mounting plate 401 and is fixedly connected to a reverse threaded rod 404, the lower end surface of the reverse threaded rod 404 is rotatably connected to the upper surface of the second mounting plate 402, the external thread teeth of the outer walls at both ends of the reverse threaded rod 404 are set in reverse, and the outer wall of the reverse threaded rod 404 is threadedly connected to the inner wall of the telescopic frame 5.

[0036] In this embodiment, the installation positions of the second motor 403 and the reverse threaded rod 404 can be limited by the first mounting plate 401 and the second mounting plate 402. When the second motor 403 is started, the reverse threaded rod 404 can be controlled to rotate, and the external threaded teeth on the outer walls at both ends of the reverse threaded rod 404 are set in opposite directions, so that the telescopic frame 5 can be controlled to be telescopic by rotating the reverse threaded rod 404.

[0037] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the telescopic frame 5 includes a first moving head 501 and a second moving head 502 which are respectively threadedly connected to the two ends of the reverse threaded rod 404, one side of the first moving head 501 and the second moving head 502 are both in contact with the inner wall of the shaft rod 202, and the first moving head 501 and the second moving head 502 are respectively hinged with the first telescopic strip 503 and the second telescopic strip 504 at one end away from the shaft rod 202, and the middle part of the first telescopic strip 503 and the middle part of the second telescopic strip 504 are hinged to each other, and the first moving head 501 and the second moving head 502 are respectively hinged with the first connecting head 505 and the second connecting head 506 at one end away from the reverse threaded rod 404, and the first connecting head 505 and the second connecting head 506 are respectively slidably connected to the movable connecting strip 6 by bolts.

[0038] In this embodiment, the installation position of the first telescopic bar 503 and the second telescopic bar 504 can be limited by the first moving head 501 and the second moving head 502, and the middle parts of the first telescopic bar 503 and the second telescopic bar 504 are hinged to each other, and the first telescopic bar 503 and the second telescopic bar 504 are in an X shape, so that the first moving head 501 and the second moving head 502 cooperate with the rotating reverse threaded rod 404 to control the first telescopic bar 503 and the second telescopic bar 504 to rotate around the hinged part in the middle, and the position of the movable connecting bar 6 installed by the first connecting head 505 and the second connecting head 506 can be adjusted by adjusting the rotation of the first telescopic bar 503 and the second telescopic bar 504.

[0039] In a further preferred embodiment of the present invention, Figure 2 and Figure 4As shown, the movable connecting strip 6 includes a rectangular strip 601, on which a mounting opening 602 is provided for passing the rectangular strip 601, one end of the first connecting head 505 and the second connecting head 506 are respectively slidably connected to the mounting opening 602 by bolts, a slide groove 603 is provided on one side of the rectangular strip 601, and one side of the cleaning strip 7 is located inside the slide groove 603.

[0040] In this embodiment, the installation opening 602 is cooperated with the bolt to limit the installation position between one end of the first connecting head 505 and the second connecting head 506 and the rectangular bar 601, and the bolts connecting the first connecting head 505 and the second connecting head 506 and the installation opening 602 can slide inside the installation opening 602 according to the telescopic adjustment of the telescopic frame 5, and the installation position of the cleaning strip 7 can be limited by the opened slide groove 603.

[0041] In a further preferred embodiment of the present invention, Figure 2 and Figure 4 As shown, the cleaning strip 7 includes a mounting strip 701 slidably connected inside the slide groove 603, one side of the mounting strip 701 is fixedly connected to a rubber scraper strip 702, one side of the rubber scraper strip 702 abuts against the inner wall of the mixing tank body 1, and the upper surface of the mounting strip 701 is fixedly connected to a hand-pull plate 703.

[0042] In this embodiment, by cooperating with the mounting strip 701 and the slide groove 603, the installation position of the rubber scraper strip 702 can be limited. By the abutment movement of the rubber scraper strip 702 and the inner wall of the mixing tank body 1, the inner wall of the mixing tank body 1 can be scraped and cleaned. The rubber scraper strip 702 is made of rubber material and has a certain elasticity, so it can play a certain protective role on the inner wall of the mixing tank body 1. By connecting the hand pull plate 703, it is convenient for personnel to pull the mounting strip 701 for disassembly or installation.

[0043] In a further preferred embodiment of the present invention, Figure 2 As shown, the shaft 202 is symmetrically fixedly connected to a conduit 8 on one side close to the rectangular bar 601, the mounting groove 3 is located between the symmetrically arranged conduits 8, the inside of the conduit 8 is slidably connected to a guide rod 9, and the end of the guide rod 9 away from the conduit 8 is fixedly connected to one side of the rectangular bar 601.

[0044] In this embodiment, the installation and movement position of the guide rod 9 can be limited by the conduit 8. The conduit 8 cooperates with the guide rod 9 to guide the movement of the rectangular bar 601, thereby enhancing the stability of the rectangular bar 601 during movement.

[0045] The implementation principle of the raw material mixing tank for fermentation in the embodiment of the present application is:

[0046] When in use, the raw materials that need to be fermented and mixed are placed inside the mixing tank body 1, and the raw materials can be stirred and mixed by starting the adjusting mechanism 4. After the mixing tank body 1 is used, the user can start the adjusting mechanism 4 to control the telescopic frame 5 to extend, and control the cleaning bar 7 to abut against the inner wall of the mixing tank body 1 by moving the connecting bar 6. By starting the stirring mechanism 2, the cleaning bar 7 can be controlled to move and scrape and clean the inner wall of the mixing tank body 1. The cleaning bar 7 set up in this application can replace the brush for cleaning. After scraping and cleaning the inner wall of the mixing tank body 1 with the cleaning bar 7, the personnel can use a high-pressure water gun to rinse it, thereby reducing the residue of bacteria, foreign matter or other contaminants, and trying to avoid affecting the quality of the next batch of products, making this application more conducive to practical use.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A raw material mixing tank for fermentation, comprising a mixing tank body (1), characterized in that: The mixing tank body (1) is provided with a stirring mechanism (2), a mounting groove (3) is provided on one side of the stirring mechanism (2), an adjusting mechanism (4) is provided inside the mounting groove (3), a telescopic frame (5) is movably connected to the adjusting mechanism (4), a side of the telescopic frame (5) away from the adjusting mechanism (4) is movably connected to a movable connecting strip (6), a cleaning strip (7) is slidably connected inside the movable connecting strip (6), and a side of the cleaning strip (7) away from the movable connecting strip (6) is in contact with the inner wall of the mixing tank body (1); The stirring mechanism (2) comprises a first motor (201) fixedly connected to the upper surface of the mixing tank body (1); the output end of the first motor (201) passes through the mixing tank body (1) and is fixedly connected to a shaft (202); the lower end surface of the shaft (202) is fixedly connected to the bottom of the inner wall of the mixing tank body (1); the mounting groove (3) is provided on one side of the shaft (202); and the outer wall of the shaft (202) is evenly and fixedly connected to a plurality of stirring paddles (203); The adjustment mechanism (4) comprises a first mounting plate (401) and a second mounting plate (402) located inside the mounting groove (3); the upper surface of the first mounting plate (401) is fixedly connected to a second motor (403); the output end of the second motor (403) passes through the first mounting plate (401) and is fixedly connected to a reverse threaded rod (404); the lower end surface of the reverse threaded rod (404) is rotatably connected to the upper surface of the second mounting plate (402); the external thread teeth on the outer walls at both ends of the reverse threaded rod (404) are arranged in opposite directions; and the outer wall of the reverse threaded rod (404) is threadedly connected to the inner wall of the telescopic frame (5); The telescopic frame (5) comprises a first moving head (501) and a second moving head (502) which are respectively threadedly connected to the two ends of the reverse threaded rod (404); one side of the first moving head (501) and the second moving head (502) are both in contact with the inner wall of the shaft rod (202); one end of the first moving head (501) and the second moving head (502) away from the shaft rod (202) are respectively hinged with a first telescopic strip (503) and a second telescopic strip (504); the middle part of the first telescopic strip (503) and the middle part of the second telescopic strip (504) are hinged with each other; one end of the first moving head (501) and the second moving head (502) away from the reverse threaded rod (404) are respectively hinged with a first connecting head (505) and a second connecting head (506); one end of the first connecting head (505) and the second connecting head (506) away from the reverse threaded rod (404) are respectively slidably connected to the movable connecting strip (6) by bolts.

2. A raw material mixing tank for fermentation according to claim 1, characterized in that: The movable connecting strip (6) comprises a rectangular strip (601), the rectangular strip (601) is provided with an installation opening (602) for passing through the rectangular strip (601), one end of the first connecting head (505) and one end of the second connecting head (506) are respectively slidably connected to the installation opening (602) by bolts, one side of the rectangular strip (601) is provided with a slide groove (603), and one side of the cleaning strip (7) is located inside the slide groove (603).

3. A raw material mixing tank for fermentation according to claim 2, characterized in that: The cleaning strip (7) comprises a mounting strip (701) slidably connected to the inside of the slide groove (603), one side of the mounting strip (701) is fixedly connected to a rubber scraper strip (702), one side of the rubber scraper strip (702) is in contact with the inner wall of the mixing tank body (1), and the upper surface of the mounting strip (701) is fixedly connected to a hand-pull plate (703).

4. A raw material mixing tank for fermentation according to claim 2, characterized in that: The shaft rod (202) is symmetrically fixedly connected to a conduit (8) on one side close to the rectangular strip (601); the mounting groove (3) is located between the symmetrically arranged conduits (8); a guide rod (9) is slidably connected inside the conduit (8); and one end of the guide rod (9) away from the conduit (8) is fixedly connected to one side of the rectangular strip (601).

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