A zircon sand multi-adjustment stirring reaction device

Abstract

The utility model relates to zircon sand production technical field discloses a zircon sand multiple regulation stirring reaction unit, include: jar body, the top one side of jar body is fixed with feeding hopper, the bottom center of jar body is fixed with discharge valve, the bottom edge of jar body is fixed with support, the jar wall inside of jar body is equipped with cavity. This zircon sand multiple regulation stirring reaction unit, through the cooperation between each part, vertical pipe, stirring vane, bend heating tank material, the temperature sensor probe of tank inner wall realizes all -round heating, if the temperature is higher than the best range, right side solenoid valve closes, stops and heats medium, then left side solenoid valve opens, and the left side liquid supply pipe of outside cold water source supply device is connected and injects cold medium, and the temperature is reduced fast, and the efficient production of zircon sand is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of zircon sand production technology, specifically to a zircon sand multi-adjustment stirring reaction device. Background Technology

[0002] Zircon sand, as an important industrial raw material, has wide applications in various fields such as ceramics, refractory materials, casting, and zircon metal and its chemical products. Among these, the ceramics industry is currently the most widespread user of zircon sand globally. Zircon sand often contains impurities such as iron, primarily iron oxide (Fe2O3). Iron impurities exist in various forms, including zircon sand and zircon metal. The presence of iron impurities severely affects the quality and application of zircon sand. In the ceramics industry, iron impurities can cause discoloration and reduced whiteness in ceramic products, affecting their appearance. In the refractory materials field, iron impurities reduce the material's high-temperature resistance and chemical stability. In the production of zircon metal and its chemical products, iron impurities can interfere with subsequent chemical reactions, affecting the purity and performance of the products. Therefore, removing iron impurities from zircon sand and improving its purity and whiteness is of great significance for meeting the demand for high-quality zircon sand in various industries.

[0003] Currently, acid pickling is a common method for removing iron impurities from zircon sand. This method mainly utilizes hydrochloric acid (15%-20%) to react with the iron impurities in the zircon sand. A chemical reaction occurs, producing soluble ferric chloride ( ). The reaction equation is: In actual production, zircon sand and hydrochloric acid are usually mixed in a mass ratio of 1:2-5 and stirred at 80-95℃ for 2-5 hours to fully dissolve iron impurities. Then, the dissolved iron impurities are removed by washing with water, and finally, a zircon sand product with significantly improved whiteness is obtained.

[0004] The above processing requires a stirring and reaction device for zircon sand processing. Existing technology, including utility model patent CN217663228U, discloses a zircon sand stirring and reaction device, relating to the field of zircon sand production equipment. It includes a reactor body and a base. The reactor body is equipped with an electric heating element, and a feeding port is located on the top surface of the reactor body. The base and the bottom of the reactor body are connected via a universal connector. A drive device is located on the top of the reactor body. This design can improve the completeness and efficiency of the material reaction.

[0005] However, the device still has some drawbacks in actual use. For example, heating the inner wall of the tank still requires the use of electric heating components and other structures, and it cannot achieve comprehensive heating by using a flowing heat medium. In addition, because the optimal heating temperature range is relatively limited, if the electric heating components overheat, the only solution is to reduce the power or cut off the power. It is not possible to quickly adjust the temperature inside the tank to the optimal temperature range, which is not conducive to the efficient operation of zircon sand production. Utility Model Content

[0006] The purpose of this invention is to provide a zircon sand multi-adjustment stirring reaction device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a zircon sand multi-adjustment stirring reaction device, comprising: a tank body, a feeding hopper fixedly connected to one side of the top of the tank body, a discharge valve fixedly connected to the center of the bottom of the tank body, a support column fixedly connected to the edge of the bottom of the tank body, and a cavity formed inside the tank wall; a shell body fixedly connected to the center of the top of the tank body; a three-way pipe fixedly connected to the top of the shell body; two solenoid valves, respectively fixedly connected to the top two sides of the outer wall of the three-way pipe; a liquid supply pipe fixedly connected to the inlet end of the solenoid valve; a vertical pipe rotatably connected to the bottom of the outer wall of the three-way pipe, the vertical pipe being rotatably connected to the tank body through a sealed bearing, and two openings formed at the bottom of the outer wall of the vertical pipe; a sleeve fixedly sleeved to the bottom of the outer wall of the vertical pipe and connected to the interior of the vertical pipe through the openings; and two bent pipes, respectively fixedly connected to the outer wall of the sleeve and connected to the sleeve. The internal structure is interconnected; a scraper is fixed to the outer wall of the bend near the inner wall of the tank and fits against the inner wall of the tank; a first cavity ring is fixed to the top of the bend and communicates with the inside of the bend, and the first cavity ring is rotatably connected to the tank through a sealed bearing; multiple curved tubes are provided, distributed inside the cavity and fixedly connected to the tank, and the curved tubes communicate with the inside of the first cavity ring; a second cavity ring is fixedly sleeved on the lower outer wall of the tank and communicates with the inside of the curved tube; two drain heads are provided, fixed on both sides of the outer wall of the second cavity ring and communicate with the inside of the second cavity ring; multiple sets of stirring blades are provided on the side of the bend near the vertical tube; a convex tube is fixed between the vertical tube and the bend, and the vertical tube and the bend are interconnected; a temperature sensor probe is installed on the inner wall of the tank.

[0008] Preferably, the tank body has an inner and outer double-layer structure, and a heat insulation layer is fixed between the two tank bodies.

[0009] Preferably, it further includes: an impeller, fixedly connected to the top end of the sleeve, and its inner wall is fixedly connected to the vertical pipe.

[0010] Preferably, it further includes: a guide vane, multiple of which are disposed inside the bend near the convex tube and are fixedly connected to the inner wall of the bend.

[0011] Preferably, it further includes: a disc; fixedly sleeved on the top of the outer wall of the vertical tube; a gear ring, fixedly connected to the upper surface of the disc and coaxial with the vertical tube; a gear, meshing with one side of the top of the gear ring; a rotating rod, fixedly connected to the inner wall of the gear and rotatably connected to the housing via a ball bearing; and a motor, fixedly connected to one side of the outer wall of the housing, with its output shaft fixedly connected to the rotating rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This zircon sand multi-adjustment stirring reaction device has the following advantages:

[0013] Through the coordinated operation of various components, the operator feeds the required material for removing iron impurities from zircon sand into the tank via the feeding hopper, closes the top cover of the feeding hopper, and starts the right-side solenoid valve. The right-side supply pipe, connected to the external hot water supply device, injects the hot medium into the tee pipe. The hot medium sequentially passes through the tee pipe, vertical pipe, inlet, bend, and convex pipe into the stirring blade, and then exits through the first cavity ring, curved pipe, second cavity ring, and drain head. During this process, the vertical pipe, stirring blade, and bend pipe heat the material inside the tank, while the curved pipe heats the inner wall of the tank, achieving all-round heating. The temperature sensor probe on the inner wall of the tank monitors the temperature in real time. If the temperature is higher than the optimal range, the right-side solenoid valve closes, stopping the injection of the hot medium. Then, the left-side solenoid valve opens, and the left-side supply pipe, connected to the external cold water supply device, injects the cold medium to quickly cool down the tank, ensuring efficient zircon sand production. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0018] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0019] Figure 5 for Figure 1 Enlarged view of point D in the middle;

[0020] Figure 6 for Figure 1 Enlarged view of point E in the middle.

[0021] In the diagram: 1. Tank body, 2. Feed hopper, 3. Discharge valve, 4. Support column, 5. Shell, 6. T-pipe, 7. Solenoid valve, 8. Liquid supply pipe, 9. Vertical pipe, 10. Port, 11. Sleeve, 12. Bend, 13. Scraper, 14. First cavity ring, 15. Cavity, 16. Curved pipe, 17. Second cavity ring, 18. Discharge head, 19. Protruding pipe, 20. Stirring blade, 21. Insulation layer, 22. Impeller, 23. Guide vane, 24. Disc, 25. Gear ring, 26. Gear, 27. Rotating rod, 28. Motor, 29. Temperature sensor probe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 6This utility model provides a technical solution: a zircon sand multi-adjustment stirring reaction device, comprising: a tank 1, a feeding hopper 2 fixedly connected to one side of the top of the tank 1, a discharge valve 3 fixedly connected to the center of the bottom of the tank 1, a support column 4 fixedly connected to the edge of the bottom of the tank 1, a cavity 15 opened inside the tank wall of the tank 1, a shell 5 fixedly connected to the center of the top of the tank 1, a three-way pipe 6 fixedly connected to the top of the shell 5, two solenoid valves 7 respectively fixedly connected to the top two sides of the outer wall of the three-way pipe 6, a liquid supply pipe 8 fixedly connected to the inlet end of the solenoid valve 7, a vertical pipe 9 rotatably connected to the bottom of the outer wall of the three-way pipe 6, the vertical pipe 9 being rotatably connected to the tank 1 through a sealed bearing, two openings 10 opened at the bottom of the outer wall of the vertical pipe 9, a sleeve 11 fixedly sleeved to the bottom of the outer wall of the vertical pipe 9 and connected to the interior of the vertical pipe 9 through the openings 10, and two bent pipes 12 respectively fixedly connected to the two sides of the outer wall of the sleeve 11 and connected to the interior of the sleeve 11. The following components are connected: a scraper 13, fixed to the outer wall of the bend 12 against the inner wall of the tank 1, and in close contact with the inner wall of the tank 1; a first cavity ring 14, fixed to the top of the bend 12 and connected to the interior of the bend 12; the first cavity ring 14 is rotatably connected to the tank 1 via a sealed bearing; multiple curved tubes 16 are provided, distributed inside the cavity 15 and fixedly connected to the tank 1; the curved tubes 16 are connected to the interior of the first cavity ring 14; and a second cavity ring 1... 7. A fixed sleeve is attached to the lower outer wall of the tank body 1 and connected to the inside of the curved pipe 16. Two drain heads 18 are provided and fixed to both sides of the outer wall of the second cavity ring 17 and connected to the inside of the second cavity ring 17. Multiple sets of stirring blades 20 are provided and located on the side of the curved pipe 12 near the vertical pipe 9. A convex pipe 19 is fixed between the vertical pipe 9 and the curved pipe 12, and the vertical pipe 9 and the curved pipe 12 are interconnected. A temperature sensor probe 29 is installed on the inner wall of the tank body 1.

[0024] In the specific implementation process, it is worth noting that the tank body 1 is made of corrosion-resistant and high-temperature-resistant stainless steel, and its inner wall is polished to reduce material adhesion. The cavity 15 inside the tank wall provides installation space for the curved pipe 16, ensuring that the curved pipe 16 can be evenly distributed around the tank wall. The feeding hopper 2 adopts a funnel-shaped structure and is equipped with a sealable cover plate at the top. The shell 5 is used to house transmission components such as the disc 24, gear ring 25, and gear 26, providing protection. The three-way pipe 6 is a three-way stainless steel fitting. The horizontal end of the three-way pipe 6 has a sealed structure, and its bottom end is connected to the vertical pipe 9 in a sealed rotational manner through a sealed bearing. The top two sides are respectively connected to two solenoid valves 7, which can realize the switching and transportation of cold and hot media, ensuring that the media can be introduced. Inside the vertical pipe 9, two solenoid valves 7 are proportional solenoid valves, corresponding to the supply pipes 8 of the cold water source and hot water source respectively. Their opening degree can be adjusted according to the signal from the externally connected central controller to control the medium flow. They automatically close when power is off to prevent medium leakage. The supply pipes 8 are made of high-temperature and high-pressure resistant rubber or stainless steel pipes, and are sealed to the external cold and hot water supply devices to ensure no leakage during medium transportation. The vertical pipe 9 is a hollow stainless steel pipe, and its connection with the tee pipe 6 and sleeve 11 is sealed with bearings, ensuring both flexible rotation of the vertical pipe 9 and preventing medium leakage from the connection points. Two symmetrical openings 10 at the bottom of the outer wall allow the medium in the vertical pipe 9 to flow evenly into the sleeve 11. The sleeve 11 is a hollow cylinder. The structure, with sealed connections to both the vertical pipe 9 and the bend 12, serves as a medium transfer mechanism, evenly distributing the medium conveyed by the vertical pipe 9 to the two bends 12. The two bends 12 are symmetrically distributed and employ an arc-shaped structure, designed to fit the curvature of the inner wall of the tank 1, ensuring a tight fit between the scraper 13 and the inner wall of the tank 1. This also facilitates the installation of the stirring blade 20. The scraper 13 is hollow and communicates with the sleeve 11 and the first cavity ring 14, allowing for medium flow. The scraper 13 is made of wear-resistant rubber with a moderate thickness. The first cavity ring 14 is an annular hollow structure, sealed and connected to the bends 12 and curved pipes 16, diverting the medium within the bends 12 to multiple curved pipes 16. The connection between the ring and the tank 1 uses a sealed bearing to ensure no medium leakage during rotation. Multiple curved pipes 16... The 6 rings are evenly distributed in a ring within the cavity 15 of the tank wall of tank 1. The serpentine bend design increases the contact area with the inner wall of tank 1, improving heating or cooling efficiency and ensuring uniform temperature inside tank 1. The second cavity ring 17 is sealed and connected to the curved pipe 16 and the drain head 18, serving as a medium collection point. The medium flowing out from multiple curved pipes 16 is collected and discharged through the drain head 18, facilitating medium recovery or treatment. The two drain heads 18 are symmetrically arranged to accelerate the discharge speed. The temperature sensor probe 29 is a waterproof and corrosion-resistant temperature sensor probe. The specific temperature sensor model is not limited, as long as it meets the requirements of use. It can collect the real-time temperature of the material, and its output end is connected to an external central controller to provide data support for temperature regulation.

[0025] Furthermore, the tank body 1 has a double-layer structure with an inner and outer layer, and a heat insulation layer 21 is fixed between the two tank bodies 1.

[0026] In the specific implementation process, it is worth noting that both the inner and outer double-layer structure of the tank 1 is made of stainless steel, which facilitates the laying of the insulation layer 21. The insulation layer 21 is made of high-temperature resistant rock wool or glass wool with excellent heat insulation performance. It is densely filled and closely fits the double-layer tank 1, which can effectively reduce the temperature loss inside the tank 1, reduce the influence of the external ambient temperature on the reaction temperature inside the tank, and prevent the outer wall temperature of the tank 1 from becoming too high, avoiding burns to the operators and ensuring operational safety. Especially in the constant temperature stirring stage, it can effectively maintain the stability of the temperature inside the tank, reduce the consumption of cold and hot media, and improve the energy efficiency of the device.

[0027] Furthermore, it also includes: an impeller 22, which is fixedly connected to the top of the sleeve 11 and whose inner wall is fixedly connected to the vertical pipe 9.

[0028] In the specific implementation process, it is worth noting that the impeller 22 adopts a stainless steel blade structure with an inclined blade design. It is firmly fixed to the vertical pipe 9 and the sleeve 11 and rotates synchronously with the vertical pipe 9. The impeller 22 is installed in the lower middle position inside the tank 1, which facilitates the improvement of the mixing efficiency of the material in the tank 1.

[0029] Furthermore, it also includes: guide vanes 23, multiple of which are provided inside the bend 12 near the protrusion 19 and are fixedly connected to the inner wall of the bend 12.

[0030] In the specific implementation process, it is worth noting that multiple guide vanes 23 are evenly distributed, with an inclined design, and are tightly fixed to the inner wall of the bend 12. They are made of stainless steel and their function is to guide the flow of cold and hot media, so that the media can enter the interior of the stirring blade 20.

[0031] Furthermore, it also includes: a disc 24, which is fixedly sleeved on the top of the outer wall of the vertical tube 9; a gear ring 25, which is fixedly connected to the upper surface of the disc 24 and coaxial with the vertical tube 9; a gear 26, which is meshed with the top side of the gear ring 25; a rotating rod 27, which is fixedly connected to the inner wall of the gear 26 and rotatably connected to the housing 5 through a ball bearing; and a motor 28, which is fixedly connected to one side of the outer wall of the housing 5, and whose output shaft is fixedly connected to the rotating rod 27.

[0032] In the specific implementation process, it is worth noting that the motor 28 adopts a variable frequency speed control motor, the power can be adjusted according to the operating requirements of the device, and the speed can be precisely adjusted according to the signal of the external central controller to meet the stirring requirements of different stages such as heating, cooling, constant temperature, and material discharge.

[0033] Working principle:

[0034] The operator adds the necessary material for removing iron impurities from zircon sand into the tank 1 via the feeding hopper 2. After closing the top cover of the feeding hopper 2, the operator starts the motor 28 and the solenoid valve 7 on the right side. At this time, the liquid supply pipe 8, connected to the external hot water supply device, begins to inject hot medium into the three-way pipe 6. The hot medium is injected into the stirring blade 20 sequentially through the three-way pipe 6, the vertical pipe 9, the port 10, the bend pipe 12, and the convex pipe 19. Subsequently, it is discharged through the first cavity ring 14, the curved pipe 16, the second cavity ring 17, and the drain head 18. During this process, the vertical pipe 9, the stirring blade 20, and the vertical pipe 9... The bent pipe 12 heats the material inside the tank 1, and the curved pipe 16 heats the inner wall of the tank 1, realizing all-round heating of the material by means of flowing heat medium. The temperature sensor probe 29 located on the inner wall of the tank 1 monitors the temperature value inside the tank 1 in real time. When the temperature inside the tank 1 is higher than the optimal temperature range, the right solenoid valve 7 closes to stop the injection of heat medium. Then the left solenoid valve 7 opens, and the liquid supply pipe 8 connected to the external cold water supply device injects cold medium into the three-way pipe 6, quickly reducing the temperature inside the tank 1 to a suitable range, ensuring the efficient operation of zircon sand production.

[0035] After starting the motor 28, it can drive the rotating rod 27 and gear 26 to rotate together. During this time, the gear 26 meshes with the gear ring 25, which in turn drives the gear ring 25, the disc 24 and the vertical tube 9 to rotate. The two bent tubes 12 rotate synchronously around the vertical tube 9. The stirring blades 20 connected to the outer wall of the bent tube 12 through the convex tube 19 and the impeller 22 fixed to the lower part of the outer wall of the vertical tube 9 can fully stir the material inside the tank 1 to ensure that the material is heated evenly. After the stirring is completed, the power supply to the motor 28 is stopped, and the solenoid valve 7 is simultaneously de-energized. After the material inside the tank 1 has stopped, the operator prepares the appropriate container or appropriate discharge pipeline, and then opens the discharge valve 3 to discharge the material inside the tank 1. During the discharge operation, the operator can start the motor 28 for a certain period of time. The scraper 13 on the outer wall of the bent tube 12 can scrape the material attached to the inner wall of the tank 1, so that the material inside the tank 1 can be fully discharged and will not adhere to the inner wall of the tank 1.

[0036] Temperature sensor probe 29 installed on the inner wall of tank 1 can monitor the material temperature inside tank 1 in real time and convert the analog signal into a standard electrical signal, which is then transmitted to the central controller outside the tank to provide a basis for control decisions. Two proportional solenoid valves 7, which are connected to hot and cold water sources respectively and have adjustable openings, and a variable frequency speed control motor 28 are used as actuators to regulate the temperature and stirring intensity. Solenoid valve 7 receives signals from the controller and, based on the deviation of the tank temperature from the optimal range, implements switch control, flow regulation, and power-off shutdown to ensure temperature stability. Motor 28 receives speed control signals through a frequency converter and is linked with temperature control. During the heating and cooling stages, it stirs at high speed; during the constant temperature stage, it maintains the optimal speed; and during the discharge stage, it runs at low speed intermittently, driving scraper 13 to scrape the material off the tank wall. After the feeding is started, the sensor monitors the temperature, the controller compares the deviation and adjusts the flow rate of the solenoid valve and the speed of the motor. After the temperature stabilizes, it enters the constant temperature stirring mode. After the reaction is completed, the equipment is shut down and the discharge program is initiated, ensuring that the iron removal reaction proceeds efficiently and in an orderly manner.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zircon sand multi-adjustment stirring reaction device, characterized in that, include: Tank (1), a feeding hopper (2) is fixedly connected to one side of the top of the tank (1), a discharge valve (3) is fixedly connected to the center of the bottom end of the tank (1), a support column (4) is fixedly connected to the bottom edge of the tank (1), and a cavity (15) is opened inside the tank wall of the tank (1). The shell (5) is fixed to the center of the top of the tank (1); A three-way pipe (6) is fixed to the top of the housing (5); Two solenoid valves (7) are provided and are respectively fixed to the top two sides of the outer wall of the three-way pipe (6); The liquid supply pipe (8) is fixedly connected to the feed end of the solenoid valve (7); The vertical pipe (9) is rotatably connected to the bottom of the outer wall of the three-way pipe (6). The vertical pipe (9) is rotatably connected to the tank body (1) through a sealed bearing. Two openings (10) are opened at the bottom of the outer wall of the vertical pipe (9). The sleeve (11) is fixedly fitted onto the bottom end of the outer wall of the vertical tube (9) and is connected to the interior of the vertical tube (9) through the opening (10); Two bends (12) are provided, which are respectively fixed to both sides of the outer wall of the sleeve (11) and connected to the inside of the sleeve (11); The scraper (13) is fixed to the outer wall of the bend (12) on the side that is close to the inner wall of the tank (1) and is in contact with the inner wall of the tank (1); The first cavity ring (14) is fixed to the top end of the bend (12) and communicates with the inside of the bend (12). The first cavity ring (14) is rotatably connected to the tank (1) through a sealed bearing. Multiple curved tubes (16) are provided and distributed inside the cavity (15) and are fixedly connected to the tank (1). The curved tubes (16) are connected to the inside of the first cavity ring (14). The second cavity ring (17) is fixedly sleeved on the lower part of the outer wall of the tank (1) and is connected to the inside of the curved tube (16); Two drain heads (18) are provided and fixed to both sides of the outer wall of the second cavity ring (17) and connected to the interior of the second cavity ring (17); Multiple sets of stirring blades (20) are provided on the side of the bend (12) facing the vertical pipe (9); A convex tube (19) is fixed between the vertical tube (9) and the curved tube (12), and the vertical tube (9) and the curved tube (12) are interconnected. Temperature sensor probe (29) is installed on the inner wall of the tank (1).

2. The zircon sand multi-adjustment stirring reaction device according to claim 1, characterized in that, The tank (1) has a double-layer structure with an inner and outer layer, and a heat insulation layer (21) is fixed between the two layers of the tank (1).

3. The zircon sand multi-adjustment stirring reaction device according to claim 1, characterized in that, Also includes: The impeller (22) is fixed to the top of the sleeve (11), and its inner wall is fixedly connected to the vertical pipe (9).

4. The zircon sand multi-adjustment stirring reaction device according to claim 1, characterized in that, Also includes: Multiple guide vanes (23) are provided and are located inside the bend (12) near the convex tube (19) and are fixedly connected to the inner wall of the bend (12).

5. The zircon sand multi-adjustment stirring reaction device according to claim 1, characterized in that, Also includes: Disc (24); fixedly sleeved on the top of the outer wall of the vertical tube (9); The toothed ring (25) is fixed to the upper surface of the disk (24) and is coaxial with the vertical tube (9); Gear (26) meshes with one side of the top of the gear ring (25); The rotating rod (27) is fixed to the inner wall of the gear (26) and is rotatably connected to the housing (5) through a ball bearing; The motor (28) is fixed to one side of the outer wall of the housing (5), and its output shaft is fixedly connected to the rotating rod (27).

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