Combined dryer for drying fish meal and meat and bone meal

Abstract

The present application relates to a kind of combined dryer for drying fish meal and bone meal, including dryer body, the dryer body is provided with feed pipe, and the inside of dryer body is provided with rotating assembly, the top of the dryer body is provided with installation cap, and installation cap is provided with pressure relief mechanism;The present application improves the structure of the existing combined dryer for drying fish meal and bone meal, the improved combined dryer for drying fish meal and bone meal uses mechanical pressure relief instead of the pressure relief mode of existing pressure relief valve, which can prevent electronic equipment from being damaged due to the risk of dust entering, so the improved combined dryer for drying fish meal and bone meal can always have good pressure relief effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, in particular to a combined dryer for drying fish meal and meat and bone meal. BACKGROUND

[0002] The Chinese patent application with the publication number CN110487061A entitled "Fish solubles drying device" discloses a fish solubles drying device, which comprises a shell, a feed inlet is arranged at the upper part of one end of the shell, a discharge outlet is arranged at the other end of the shell, a material conveying part is arranged in the inner cavity of the shell, one end of the material conveying part is connected to the corresponding shell in a sealed and rotatable manner, the other end of the material conveying part is connected to a driving mechanism in a sealed manner, a pressure relief valve is arranged at the top of the shell, when drying powdery substances, powdery substances are easy to enter the pressure relief valve, and the pressure relief valve now uses electronic equipment, which is easy to be damaged due to the entry of powdery substances, so it cannot play a pressure relief role, thereby causing certain safety risks in the production process. In order to solve the above problems, a combined dryer for drying fish meal and meat and bone meal is proposed in the present application. SUMMARY

[0003] (1) Technical problem to be solved

[0004] The purpose of the present application is to overcome the shortcomings of the prior art, adapt to the actual needs, and provide a combined dryer for drying fish meal and meat and bone meal to solve the above technical problems.

[0005] (2) Technical solution

[0006] In order to achieve the purpose of the present application, the technical solution adopted by the present application is as follows:

[0007] A combined dryer for drying fish meal and meat and bone meal, comprising a dryer body, a feed pipe is arranged on the dryer body, a rotating assembly is arranged inside the dryer body, an installation cap is arranged at the top of the dryer body, and a pressure relief mechanism is arranged in the installation cap.

[0008] Further, the pressure relief mechanism comprises two sealing boxes symmetrically arranged in the installation cap, the two sealing boxes are connected by an elastic sealing plate on the side close to each other, a pressure relief pipe is communicated on the side away from each other of the two sealing boxes, and the pressure relief pipe is fixedly inserted into the installation cap, a rotating support disc is rotatably arranged in the sealing box, and the rotating support disc is fixedly sleeved on the first rotating rod, the first rotating rod is rotatably arranged on the sealing box, and a plurality of inclined driving grooves are arranged on the rotating support disc.

[0009] Further, a reminding mechanism is arranged in the mounting cap, the reminding mechanism comprises a first electrode contact and a second electrode contact, the first electrode contact is fixedly arranged on the elastic sealing plate, the second electrode contact is fixedly arranged on the guide limiting assembly, the upper end of the guide limiting assembly is fixedly connected to the inner top wall of the mounting cap, and the outer top wall of the mounting cap is provided with a warning device.

[0010] Further, the guide limiting assembly comprises a guide limiting rod, a guide limiting cylinder and a guide limiting spring, the guide limiting rod is movably inserted into the guide limiting cylinder, and the guide limiting spring is wound outside the guide limiting rod and fixedly connected to the side wall of the guide limiting rod and the outer side wall of the guide limiting cylinder.

[0011] Further, the mounting cap is provided with a locking mechanism.

[0012] Further, the locking mechanism comprises a push-pull rod, one end of the push-pull rod is hingedly connected to the side wall of the first electrode contact, the other end of the push-pull rod is hingedly connected to the side wall of the first locking rod, the first locking rod is movably inserted into the support plate, the support plate is fixedly arranged on the outer side wall of the sealing box, the first locking rod is wound with a first supporting spring outside, and the two ends of the first supporting spring are fixedly connected to the side wall of the first locking rod and the side wall of the support plate, the end of the first locking rod away from the push-pull rod is arranged in the first locking groove, and the first locking groove is arranged on the first rotating rod.

[0013] Further, the number of the first locking grooves is several, and the several first locking grooves are arranged at equal distances in a ring shape on the first rotating rod.

[0014] Further, the first locking groove comprises an inclined surface and a horizontal section, the inclined surface is arranged on the side wall of the groove for guiding the first locking rod into the groove, and the horizontal section is arranged on the bottom wall of the groove for allowing the first locking rod entering into the groove to be stationary.

[0015] Further, the mounting cap is provided with an anti-blocking assembly, the anti-blocking assembly comprises a plurality of first round head magnets arranged on the circumference of the first rotating rod and a second round head magnet arranged on the first locking rod, and the same side of the first round head magnet and the second round head magnet is magnetically identical.

[0016] Further, a fixing mechanism is arranged in the mounting cap, the fixing mechanism comprises a second locking rod movably inserted on the horizontal section, and a second supporting spring is connected outside the second locking rod, two ends of the second supporting spring are fixedly connected on the side wall of the second locking rod and the horizontal section respectively, a second locking groove matched with the second locking rod is arranged in the mounting cap, and the second locking groove is arranged on the second rotating rod, the second rotating rod is movably inserted on the middle part of the first rotating rod, and the second rotating rod is fixedly arranged in the mounting cap.

[0017] (3) Beneficial effects:

[0018] The present application improves the structure of the existing combined dryer for drying fish meal and meat and bone meal, and the improved combined dryer for drying fish meal and meat and bone meal uses mechanical pressure relief instead of the pressure relief mode of the existing pressure relief valve, so as to prevent the electronic equipment from being damaged due to the entry of dust, and thus the improved combined dryer for drying fish meal and meat and bone meal can always have good pressure relief effect.

[0019] The pressure relief mechanism arranged in the present application is used to play a mechanical pressure relief role, specifically, as the pressure in the dryer body increases, the gas in the dryer body will expand, the expanded gas will enter the inclined driving groove, and as the dust enters, the gas will rotate counterclockwise under the action of the inclined driving groove, the rotation of the rotating support disc will move the inclined driving groove, and finally the inclined driving groove will be communicated with the pressure relief pipe, thereby playing a pressure relief role.

[0020] The reminding mechanism arranged in the present application is used to remind the workers when the air pressure in the dryer body is too large, specifically, as the air pressure in the dryer body increases, the elastic sealing plate will be pushed to expand upward, the movement of the elastic sealing plate will move the first electrode contact piece to the direction of the second electrode contact piece, when the first electrode contact piece and the second electrode contact piece are in contact, the series circuit is connected, the warning device is opened, and the warning effect is achieved.

[0021] The locking mechanism arranged in the present application is used to control the pressure relief process, and ensure that the pressure relief mechanism will only perform the pressure relief process when the air pressure in the dryer body reaches the preset pressure value, specifically, when the air pressure in the dryer body reaches or exceeds the preset pressure value, the upward movement of the elastic sealing plate will move the first locking rod to the right and upward through the first electrode contact piece and the push-pull rod, the movement of the first locking rod will be separated from the first locking groove, at this time the first rotating rod can rotate relative to the sealing box, the rotating support disc can rotate in the sealing box, and the pressure relief process is performed, and at the same time the reminding mechanism will also work to warn.

[0022] The first locking groove provided in the application comprises a combined structure of an inclined surface and a horizontal section, which is arranged to play a positioning guide role, specifically, through the combined structure of the inclined surface and the horizontal section, the left end of the first locking rod can be guided to smoothly enter into the first locking groove when the first locking rod makes a reset movement, and the zero position of the first rotating rod and the first locking rod is abutted.

[0023] The anti-blocking assembly provided in the application can make the first locking rod always align with the first locking groove through repulsion, so that the zero position abutment of the first rotating rod and the first locking rod can be smoothly performed.

[0024] The fixing mechanism provided in the application is used to assist the locking mechanism to realize the locking of the sealing box and the rotating support disc, and the structure design of the fixing mechanism is reasonable, and the relative locking of the second rotating rod and the first rotating rod can be completed at the same time when the first locking rod enters into the first locking groove. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an embodiment structure schematic view of the combined dryer for drying fish meal and meat and bone meal according to the application;

[0026] Figure 2 It is a pressure relief mechanism structure schematic view in the combined dryer for drying fish meal and meat and bone meal according to the application;

[0027] Figure 3 It is a reminding mechanism structure schematic view in the combined dryer for drying fish meal and meat and bone meal according to the application;

[0028] Figure 4 It is a B structure enlarged schematic view in the combined dryer for drying fish meal and meat and bone meal according to the application; Figure 3

[0029] Figure 5 It is a self-resetting structure schematic view in the combined dryer for drying fish meal and meat and bone meal according to the application;

[0030] Figure 6 It is a C structure enlarged schematic view in the combined dryer for drying fish meal and meat and bone meal according to the application. Figure 5

[0031] The reference signs are as follows:

[0032] ​​Dryer body 1, feed pipe 2, rotating assembly 3, mounting cap 4, pressure relief mechanism 5, sealing box 51, elastic sealing plate 52, rotating support plate 53, first rotating rod 54, inclined drive groove 55, pressure relief pipe 56, reminder mechanism 6, first electrode contact 61, second electrode contact 62, guide limit assembly 63, guide limit rod 631, guide limit cylinder 632, guide limit spring 633, warning device 64, locking mechanism 7, push-pull rod 71, first locking rod 72, support plate 73, first support spring 74, first locking groove 75, inclined surface 751, horizontal section 752, anti-jamming assembly 8, first round head magnet 81, second round head magnet 82, fixing mechanism 9, second locking rod 91, second support spring 92, second locking groove 93, second rotating rod 10. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-6 The present invention is further illustrated by the embodiments:

[0034] A combined dryer for drying fish meal and meat and bone meal includes a dryer body 1, a feed pipe 2 on the dryer body 1, and a rotating assembly 3 inside the dryer body 1. A mounting cap 4 is provided on the top of the dryer body 1, and a pressure relief mechanism 5 is installed inside the mounting cap 4. This invention improves the structure of existing combined dryers for drying fish meal and meat and bone meal. The improved combined dryer uses mechanical pressure relief instead of the existing pressure relief valve, thus preventing damage to electronic equipment due to dust ingress. Therefore, the improved combined dryer for drying fish meal and meat and bone meal can always maintain good pressure relief performance.

[0035] In the embodiment, the pressure relief mechanism 5 comprises two symmetrical sealing boxes 51 arranged in the mounting cap 4, the two sealing boxes 51 are connected through the elastic sealing plate 52 on the side close to each other, and the two sealing boxes 51 are both communicated with the pressure relief pipe 56 on the side away from each other, and the pressure relief pipe 56 is fixedly inserted on the mounting cap 4, the rotating support disc 53 is rotatably arranged in the sealing box 51, and the rotating support disc 53 is fixedly sleeved on the first rotating rod 54, the first rotating rod 54 is rotatably arranged in the sealing box 51, and a plurality of inclined drive grooves 55 are arranged on the rotating support disc 53, wherein the combination structure of the pressure relief pipe 56, the sealing box 51 and the elastic sealing plate 52 divides the inner cavity of the mounting cap 4 into two chambers which are not communicated in the horizontal direction, the pressure relief mechanism 5 arranged in the application is used to play a mechanical pressure relief role, specifically, as the pressure in the drying machine body 1 increases, the gas in the drying machine body 1 will expand, the expanded gas will enter the inclined drive groove 55, and as the inclined drive groove 55 is arranged obliquely, the gas will rotate counterclockwise with the rotating support disc 53 under the action of the inclined drive groove 55, the rotation of the rotating support disc 53 will drive the inclined drive groove 55 to move, and finally the inclined drive groove 55 is communicated with the pressure relief pipe 56, thereby playing a pressure relief role.

[0036] In the embodiment, the mounting cap 4 is provided with a reminding mechanism 6, the reminding mechanism 6 comprises a first electrode contact 61 and a second electrode contact 62, the first electrode contact 61 is fixedly arranged on the elastic sealing plate 52, the second electrode contact 62 is fixedly arranged on the guide limiting component 63, and the upper end of the guide limiting component 63 is fixedly connected to the inner top wall of the mounting cap 4, and the outer top wall of the mounting cap 4 is provided with a warning device 64, the reminding mechanism 6 arranged in the application is used to remind the workers when the air pressure in the drying machine body 1 is too large, specifically, as the air pressure in the drying machine body 1 increases, the elastic sealing plate 52 will be pushed to expand upward, the movement of the elastic sealing plate 52 will drive the first electrode contact 61 to move towards the second electrode contact 62, when the first electrode contact 61 and the second electrode contact 62 are in contact, the series circuit is communicated, the warning device 64 is started to work, and the warning effect is achieved.

[0037] In the embodiment, the guide limiting component 63 comprises a guide limiting rod 631, a guide limiting cylinder 632 and a guide limiting spring 633, the guide limiting rod 631 is movably inserted in the guide limiting cylinder 632, and the guide limiting spring 633 is wound outside the guide limiting rod 631, and the two ends of the guide limiting spring 633 are fixedly connected to the side wall of the guide limiting rod 631 and the outer side wall of the guide limiting cylinder 632 respectively.

[0038] In the embodiment, the mounting cap 4 is provided with a locking mechanism 7, the locking mechanism 7 comprises a push-pull rod 71, one end of the push-pull rod 71 is hinged on the side wall of the first electrode contact 61, and the other end of the push-pull rod 71 is hinged on the side wall of a first locking rod 72, the first locking rod 72 is movably inserted on a supporting plate 73, and the supporting plate 73 is fixedly arranged on the outer side wall of the sealing box 51, the first locking rod 72 is externally wound with a first supporting spring 74, and the two ends of the first supporting spring 74 are fixedly connected to the side wall of the first locking rod 72 and the side wall of the supporting plate 73 respectively, the end of the first locking rod 72 away from the push-pull rod 71 is arranged in a first locking groove 75, and the first locking groove 75 is formed in the first rotating rod 54, the locking mechanism 7 arranged in the application is used for controlling the pressure relief process, so as to ensure that the pressure relief mechanism 5 will only carry out the pressure relief process when the air pressure in the drying machine body 1 reaches the preset pressure value, specifically, when the air pressure in the drying machine body 1 reaches or exceeds the preset pressure value, the upward movement of the elastic sealing plate 52 will pull the first locking rod 72 to move upwardly to the right through the first electrode contact 61 and the push-pull rod 71, the movement of the first locking rod 72 will be separated from the first locking groove 75, at this time, the first rotating rod 54 can rotate relative to the sealing box 51, the rotating supporting disc 53 can rotate in the sealing box 51, and the pressure relief process is carried out, and at the same time, the reminding mechanism 6 also works to warn.

[0039] In the embodiment, the number of the first locking grooves 75 is several, the several first locking grooves 75 are arranged in an equidistant ring shape on the first rotating rod 54, the first locking groove 75 comprises an inclined surface 751 and a horizontal section 752, the inclined surface 751 is arranged on the side wall of the groove, and is used for guiding the first locking rod 72 to enter the groove, and the horizontal section 752 is arranged on the bottom wall of the groove, and is used for allowing the first locking rod 72 entering the groove to be stationary. The combination structure of the inclined surface 751 and the horizontal section 752 arranged in the first locking groove 75 in the application is used for the positioning and guiding effect, specifically, through the combination structure of the inclined surface 751 and the horizontal section 752, the left end of the first locking rod 72 can be guided to smoothly enter the first locking groove 75 when the first locking rod 72 makes a reset movement, and the zero position of the first rotating rod 54 and the first locking rod 72 is butt-jointed.

[0040] In the embodiment, the mounting cap 4 is provided with an anti-blocking assembly 8, the anti-blocking assembly 8 comprises a plurality of first round head magnets 81 arranged on the circumference of the first rotating rod 54, and a second round head magnet 82 arranged on the first locking rod 72, wherein the first round head magnets 81 and the second round head magnet 82 are magnetically identical on the side close to each other, and the anti-blocking assembly 8 provided in the application can always align the first locking rod 72 with the first locking groove 75 through repulsion, so that the zero position butt joint of the first rotating rod 54 and the first locking rod 72 can be smoothly carried out.

[0041] In the embodiment, the mounting cap 4 is provided with a fixing mechanism 9, the fixing mechanism 9 comprises a second locking rod 91 movably inserted into the horizontal section 752, and a second supporting spring 92 is wound around the outer wall of the second locking rod 91, the two ends of the second supporting spring 92 are fixedly connected to the side wall of the second locking rod 91 and the horizontal section 752 respectively, the mounting cap 4 is provided with a second locking groove 93 matched with the second locking rod 91, and the second locking groove 93 is arranged on the second rotating rod 10, the second rotating rod 10 is movably inserted into the middle part of the first rotating rod 54, and the second rotating rod 10 is fixedly arranged in the mounting cap 4, the fixing mechanism 9 provided in the application is used for assisting the locking mechanism 7 to realize the locking of the sealing box 51 and the rotating support disc 53, and the structure of the fixing mechanism 9 is reasonable, and the relative locking of the second rotating rod 10 and the first rotating rod 54 can be completed at the same time when the first locking rod 72 enters the first locking groove 75.

[0042] The application has the following beneficial effects:

[0043] The application improves the structure of the existing combined dryer for drying fish meal and meat and bone meal, and the improved combined dryer for drying fish meal and meat and bone meal uses mechanical pressure relief instead of the pressure relief mode of the existing pressure relief valve, so that the risk of damage of electronic equipment caused by dust entering can be prevented, and therefore the improved combined dryer for drying fish meal and meat and bone meal can always have good pressure relief effect.

[0044] The pressure relief mechanism 5 provided in the application is used for mechanical pressure relief, specifically, as the pressure in the dryer body 1 increases, the gas in the dryer body 1 expands, the expanded gas enters the inclined driving groove 55, and as the dust enters, the rotating support disc 53 rotates counterclockwise under the action of the inclined driving groove 55, the rotation of the rotating support disc 53 drives the movement of the inclined driving groove 55, and finally the inclined driving groove 55 is communicated with the pressure relief pipe 56, thereby achieving the effect of pressure relief.

[0045] The reminding mechanism 6 is arranged in the application, which is used for reminding the staff when the air pressure in the drying machine body 1 is too large. Specifically, with the increase of the air pressure in the drying machine body 1, the elastic sealing plate 52 is pushed to expand upwards, the movement of the elastic sealing plate 52 drives the first electrode contact 61 to move towards the second electrode contact 62, when the first electrode contact 61 and the second electrode contact 62 are in contact, the series circuit is connected, the warning device 64 is opened to work, and the warning effect is achieved.

[0046] The locking mechanism 7 is arranged in the application, which is used for controlling the pressure relief process, and ensuring that the pressure relief mechanism 5 only performs the pressure relief process when the air pressure in the drying machine body 1 reaches the preset pressure value. Specifically, when the air pressure in the drying machine body 1 reaches or exceeds the preset pressure value, the upward movement of the elastic sealing plate 52 drives the first electrode contact 61 and the push-pull rod 71 to move the first locking rod 72 upwards to the right, the movement of the first locking rod 72 is out of the first locking groove 75, at this time, the first rotating rod 54 can rotate relative to the sealing box 51, the rotating support disc 53 can rotate in the sealing box 51, and the pressure relief process is performed, and at the same time, the reminding mechanism 6 also works to warn.

[0047] The first locking groove 75 comprises a combination structure of an inclined surface 751 and a horizontal section 752, which is arranged to play a positioning and guiding role. Specifically, the combination structure of the inclined surface 751 and the horizontal section 752 can guide the left end of the first locking rod 72 to smoothly enter the first locking groove 75 when the first locking rod 72 performs the reset movement, and the zero position of the first rotating rod 54 and the first locking rod 72 is butted.

[0048] The anti-blocking assembly 8 is arranged in the application, which can make the first locking rod 72 always align with the first locking groove 75 through the repulsive force, so that the zero position butt of the first rotating rod 54 and the first locking rod 72 can be smoothly performed.

[0049] The fixing mechanism 9 is arranged in the application, which is used for assisting the locking mechanism 7 to lock the sealing box 51 and the rotating support disc 53, and the structure of the fixing mechanism 9 is reasonable, and the relative locking of the second rotating rod 10 and the first rotating rod 54 can be completed at the same time when the first locking rod 72 enters the first locking groove 75.

[0050] The embodiments of the application disclose the preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of the application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the application, which are within the protection scope of the application.

Claims

1. A combined dryer for drying fish meal and meat and bone meal, comprising a dryer body (1), characterized in that, The dryer body (1) is provided with a feed pipe (2), and a rotating assembly (3) is provided inside the dryer body (1). The top of the dryer body (1) is provided with a mounting cap (4), and a pressure relief mechanism (5) is provided inside the mounting cap (4). The pressure relief mechanism (5) includes two symmetrically arranged sealing boxes (51) inside the mounting cap (4). The two sealing boxes (51) are connected by an elastic sealing plate (52) on the side that is close to each other. The two sealing boxes (51) are connected by a pressure relief pipe (56) on the side that is far away from each other. The pressure relief pipe (56) is fixedly inserted into the mounting cap (4). A rotating support disk (53) is rotatably disposed inside the sealing box (51), and the rotating support disk (53) is fixedly sleeved outside the first rotating rod (54). The first rotating rod (54) is rotatably disposed on the sealing box (51). The rotating support disk (53) is provided with a plurality of inclined drive grooves (55). The combined structure of the pressure relief pipe (56), the sealing box (51) and the elastic sealing plate (52) divides the inner cavity of the mounting cap (4) into two chambers that are not connected vertically in the horizontal direction. A reminder mechanism (6) is provided inside the mounting cap (4). The reminder mechanism (6) includes a first electrode contact. The first electrode contact (61) and the second electrode contact (62) are fixedly mounted on the elastic sealing plate (52) and the second electrode contact (62) are fixedly mounted on the guide limiting assembly (63), and the upper end of the guide limiting assembly (63) is fixedly connected to the inner top wall of the mounting cap (4). An alarm (64) is provided on the outer top wall of the mounting cap (4). A locking mechanism (7) is provided inside the mounting cap (4). The locking mechanism (7) includes a push-pull rod (71), one end of which is hinged to the side wall of the first electrode contact (61), and the push-pull rod (71) is... The other end is hinged to the side wall of the first locking rod (72). The first locking rod (72) is movably inserted into the support plate (73), and the support plate (73) is fixedly set on the outer side wall of the sealing box (51). The first locking rod (72) is wrapped with a first support spring (74), and the two ends of the first support spring (74) are respectively fixedly connected to the side wall of the first locking rod (72) and the side wall of the support plate (73). The end of the first locking rod (72) away from the push-pull rod (71) is set in the first locking groove (75), and the first locking groove (75) is opened on the first rotating rod (54).

2. The combined dryer for drying fish meal and meat and bone meal as described in claim 1, characterized in that: The guide limiting assembly (63) includes a guide limiting rod (631), a guide limiting cylinder (632), and a guide limiting spring (633). The guide limiting rod (631) is movably inserted into the guide limiting cylinder (632), and the guide limiting spring (633) is wound around the guide limiting rod (631). The two ends of the guide limiting spring (633) are respectively fixedly connected to the side wall of the guide limiting rod (631) and the outer side wall of the guide limiting cylinder (632).

3. The combined dryer for drying fish meal and meat and bone meal as described in claim 2, characterized in that: The number of the first locking grooves (75) is set to several, and the several first locking grooves (75) are arranged in a ring at equal distances on the first rotating rod (54).

4. The combined dryer for drying fish meal and meat and bone meal as described in claim 3, characterized in that: The first locking groove (75) includes an inclined surface (751) and a horizontal section (752). The inclined surface (751) is disposed on the side wall of the groove to guide the first locking rod (72) into the groove. The horizontal section (752) is disposed on the bottom wall of the groove to allow the first locking rod (72) that has entered the groove to remain stationary.

5. The combined dryer for drying fish meal and meat and bone meal as described in claim 4, characterized in that: The mounting cap (4) is provided with an anti-jamming component (8). The anti-jamming component (8) includes a plurality of first round-headed magnets (81) on the circumference of the first rotating rod (54) and a second round-headed magnet (82) on the first locking rod (72). The first round-headed magnets (81) and the second round-headed magnets (82) have the same magnetism on the side that is close to each other.

6. The combined dryer for drying fish meal and meat and bone meal as described in claim 5, characterized in that: The mounting cap (4) is provided with a fixing mechanism (9), which includes a second locking rod (91) that is movably inserted into the horizontal section (752). A second support spring (92) is wound around the second locking rod (91). The two ends of the second support spring (92) are respectively fixedly connected to the side wall of the second locking rod (91) and the horizontal section (752). The mounting cap (4) is provided with a second locking groove (93) that matches the second locking rod (91). The second locking groove (93) is opened on the second rotating rod (10). The second rotating rod (10) is movably inserted into the middle of the first rotating rod (54). The second rotating rod (10) is fixedly installed inside the mounting cap (4).

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