Efficient thermal power flue gas desulfurization and purification treatment device

Abstract

The invention belongs to the technical field of purification treatment devices, and particularly relates to an efficient thermal power flue gas desulfurization purification treatment device which comprises a dust removal tower and a desulfurization tower, a primary dust removal assembly is arranged in the dust removal tower, a pulse dust removal mechanism is arranged on the outer side of the dust removal tower, and a connecting cross beam is fixedly mounted between the dust removal tower and the desulfurization tower; and an exhaust fan is fixedly mounted on the connecting cross beam. In the reaction process, a stepping motor works and drives a Z-axis lead screw to rotate, and then a linear sliding block drives a connecting rod main body to move up and down in a reciprocating manner, so that a sealing movable piston slides up and down in a circulating cylinder in a reciprocating manner, and an alkali liquor mixture in a desulfurization tower is sucked into the circulating cylinder through a first circulating pipe; the alkali liquor mixture is sprayed out through a second circulating pipe and a spraying head, so that the alkali liquor mixture can be in full contact with the flue gas, a stirring shaft drives a scattering rod to rotate, the scattering rod flaps the sprayed alkali liquor mixture, the contact area is increased, and convenience is brought to desulfurization purification.

Description

Technical Field

[0001] The invention relates to a purification treatment device, in particular to a high-efficiency thermal power flue gas desulfurization purification treatment device. Background Art

[0002] A thermal power plant is a factory that uses combustibles (such as coal) as fuel to produce electricity. In order to avoid polluting the environment, the flue gas generated by a thermal power plant generally needs to be purified and desulfurized before it can be discharged. The flue gas desulfurization device of a thermal power plant usually sprays the gas to remove sulfur from the flue gas. However, when a large amount of flue gas enters the desulfurization device at the same time, the gas is relatively dense, so the sprayed alkali solution mixes unevenly with the flue gas, resulting in incomplete flue gas purification.

[0003] A flue gas desulfurization waste gas treatment device as disclosed in the prior art includes a desulfurization connecting structure and a matching liquid injection structure. The lower end of the desulfurization connecting structure is connected to the matching liquid injection structure. The desulfurization connecting structure includes a first protective frame and a second protective frame. The side end of the first protective frame is fixedly connected to the second protective frame. The desulfurization connecting structure also includes a waste gas connecting component and a spraying treatment component. The lower end of the waste gas connecting component is connected to the spraying treatment component. The waste gas connecting component includes a transmission guide tube, an inclined duct, an air guide pipe, a connecting pipe, a drainage duct and a support connecting frame. The lower end of the air guide pipe is connected to the connecting pipe, the right side of the connecting pipe is connected to the drainage duct, and the upper end of the drainage duct is fixedly connected to the transmission guide tube through the support connecting frame. The front and rear ends of the transmission guide tube are connected to the inclined duct.

[0004] Although the above technology has many advantages, its treatment process still has disadvantages: after the exhaust gas is initially filtered through the filter tube, it enters the sealing cylinder through the ventilation pipe, and at the same time, atomization spraying is carried out at the spray port, and continuous pressurized spraying is carried out through the second pressurized pipe and the third pressurized pipe. However, after the exhaust gas enters the sealing cylinder, it moves upward directly and quickly and cannot be fully mixed with the sprayed desulfurization liquid, resulting in incomplete treatment of some exhaust gases; and the flue gas contains a lot of dust. If dust removal is not carried out in advance, it will affect the subsequent mixed purification treatment. Summary of the invention

[0005] The main purpose of the present disclosure is to provide a high-efficiency thermal power flue gas desulfurization and purification treatment device to effectively solve the problems raised by the inventor in the above background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A high-efficiency thermal power flue gas desulfurization and purification treatment device, comprising a dust removal tower and a desulfurization tower, wherein a preliminary dust removal component is arranged in the dust removal tower, and a pulse dust removal mechanism is arranged on the outside of the dust removal tower, a connecting crossbeam is fixedly installed between the dust removal tower and the desulfurization tower, an exhaust fan is fixedly installed on the connecting crossbeam, an input end of the exhaust fan is fixedly connected to an outlet of the dust removal tower, and an output end of the exhaust fan is fixedly connected to an inlet of the desulfurization tower, a circulating spraying mechanism is installed on the desulfurization tower, a spray head is fixedly installed on the inner top wall of the desulfurization tower, and the spray head is connected to the circulating spraying mechanism;

[0008] A flue gas inlet pipe is fixedly installed on the top of the dust removal tower, an exhaust pipe is fixedly installed on the top of the desulfurization tower, an alkali liquid delivery pipe and a drain pipe are fixedly installed on the side of the desulfurization tower, and the drain pipe is located below the alkali liquid delivery pipe, and control valves are installed on the exhaust pipe, alkali liquid delivery pipe and drain pipe.

[0009] Preferably, the preliminary dust removal assembly includes a sealing plate, a bag dust collector and an ash hopper, the sealing plate is fixedly mounted on the inner wall of the dust removal tower, the bag dust collector is embedded in the sealing plate and extends downward, and several bag dust collectors are evenly distributed, the ash hopper is fixedly mounted on the bottom of the dust removal tower, and the outlet of the dust removal tower is located below the sealing plate.

[0010] Preferably, the pulse dust removal mechanism includes an air storage tank, a pulse pipeline, an air outlet pipeline and a pulse solenoid valve. A positioning frame is fixedly installed on the outside of the dust removal tower. The air storage tank is fixedly installed on the positioning frame. A pulse pipeline is fixedly connected to the tank mouth of the air storage tank. A number of evenly distributed air outlet pipelines are fixedly connected to the pulse pipeline. A pulse solenoid valve is installed on each of the air outlet pipelines. The other end of the air outlet pipeline is fixedly connected to the dust removal tower, and the air outlet pipeline is located below the sealing plate.

[0011] Preferably, a filter layer is fixedly installed in the desulfurization tower, and the inlet of the desulfurization tower is located above the filter layer, the alkali solution delivery pipe is located below the filter layer, a stirring shaft is rotatably installed on the inner top wall of the desulfurization tower, a spiral fan blade is fixedly installed on the stirring shaft, and the spiral fan blade is located below the filter layer, and a breaking rod is fixedly installed on the part of the stirring shaft located above the filter layer.

[0012] Preferably, the bottoms of the dust removal tower and the desulfurization tower are both fixedly mounted with legs, the legs on the desulfurization tower are fixedly mounted with a motor seat, and a drive motor is fixedly mounted on the motor seat, and the output shaft of the drive motor is fixedly connected to the stirring shaft.

[0013] Preferably, the circulating spraying mechanism includes a circulating cylinder, a first circulating pipe, a second circulating pipe, a sealed dynamic piston and a connecting rod body. The first circulating pipe is fixedly installed at the lower end of the side of the desulfurization tower, and the circulating cylinder is fixedly installed at the other end of the first circulating pipe. The second circulating pipe is fixedly installed on the circulating cylinder, and the other end of the second circulating pipe extends upward and is fixedly connected to the spray head. A sealed dynamic piston is slidably installed in the circulating cylinder, and a connecting rod body is fixedly connected to the top of the sealed dynamic piston, and the connecting rod body is slidably penetrated and installed on the top of the circulating cylinder.

[0014] Preferably, both the first circulation pipe and the second circulation pipe are installed with a one-way valve, the one-way valve in the first circulation pipe only allows fluid to pass through the desulfurization tower into the circulation drum, and the one-way valve in the second circulation pipe only allows fluid to pass through the circulation drum into the second circulation pipe.

[0015] Preferably, a bracket is fixedly connected to the side of the desulfurization tower, and a guide rail is fixedly installed on the bracket, a Z-axis screw is rotatably installed in the guide rail, a linear slider is threadedly installed on the Z-axis screw, and the linear slider is slidably connected in the guide rail, the front side of the linear slider moves out of the guide rail and is fixedly connected to the connecting rod body, a stepper motor is fixedly installed on the top of the guide rail, and the Z-axis screw is fixedly connected to the output end of the stepper motor.

[0016] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0017] (I) In the present application, the flue gas from the thermal power plant is first input into the dust removal tower through the flue gas inlet pipe, so that each bag dust collector filters the dust in the flue gas. At the same time, the pulse dust removal mechanism works, opens the pulse solenoid valve, and allows high-speed airflow to enter the dust removal tower through the air outlet pipe to clean up the dust attached to the bag dust collector, avoid clogging of the bag dust collector and affect the filtering effect, so that the crushed dust in the flue gas can be quickly removed and collected and discharged by the ash hopper.

[0018] (ii) In the present application, the exhaust fan is operated to allow the flue gas from the thermal power plant treated by the dust removal tower to pass into the desulfurization tower, the control valve on the alkali solution delivery pipe is opened, and the alkali solution for desulfurization is delivered to the desulfurization tower through the alkali solution delivery pipe, and then the control valve is closed to drive the motor to rotate the stirring shaft, and then the spiral fan blades rotate to suck the flue gas entering the desulfurization tower downward and contact it with the alkali solution, so that a reaction can be carried out, and the filter layer performs secondary filtration on the flue gas moving downward to reduce particulate impurities.

[0019] (III) In the present application, during the reaction process, the stepper motor works, which drives the Z-axis screw to rotate, and then the linear slider drives the connecting rod body to move back and forth up and down, so that the sealed moving piston slides back and forth up and down in the circulation cylinder, so as to suck the alkali liquid mixture in the desulfurization tower into the circulation cylinder through the first circulation pipe, and then spray it out through the second circulation pipe and the spray head, so that the alkali liquid mixture can fully contact with the flue gas, and the stirring shaft drives the breaking rod to rotate, and the breaking rod beats the sprayed alkali liquid mixture to increase the contact area, which brings convenience to desulfurization and purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure shows a cross-sectional view of the structure of a high-efficiency thermal power flue gas desulfurization purification treatment device provided by the present invention;

[0021] Figure 2 Shown is a schematic diagram of the internal structure of the dust removal tower;

[0022] Figure 3 Shown is a schematic diagram of the internal structure of the desulfurization tower;

[0023] Figure 4 Shown is a schematic diagram of the internal structure of the reciprocating piston cylinder;

[0024] Figure 5 Shown is a schematic diagram of a pulse dust removal mechanism;

[0025] Figure 6 Shown is a top view of the sealing plate.

[0026] icon:

[0027] 1-dust removal tower; 101-sealing plate; 102-bag dust collector; 103-ash hopper; 104-flue gas inlet pipe; 2-desulfurization tower; 201-spray head; 202-filter layer; 203-spiral fan blade; 204-drive motor; 205-exhaust pipe; 206-alkali solution delivery pipe; 207-drain pipe; 3-pulse dust removal mechanism; 301-gas storage tank; 302-pulse pipeline; 303-air outlet pipeline; 304-pulse solenoid valve; 4-circulation spraying mechanism; 401-first circulation pipe; 402-second circulation pipe; 403-sealed moving piston; 404-connecting rod body; 405-check valve; 5-connecting beam; 6-exhaust fan; 7-guide rail; 8-Z-axis screw rod; 9-linear slider; 10-stepping motor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-6 , the present invention provides the following embodiments:

[0030] A high-efficiency thermal power flue gas desulfurization and purification treatment device comprises a dust removal tower 1 and a desulfurization tower 2. A preliminary dust removal component is arranged in the dust removal tower 1, and a pulse dust removal mechanism 3 is arranged on the outer side of the dust removal tower 1. A connecting crossbeam 5 is fixedly installed between the dust removal tower 1 and the desulfurization tower 2, and an exhaust fan 6 is fixedly installed on the connecting crossbeam 5. The input end of the exhaust fan 6 is fixedly connected to the outlet of the dust removal tower 1, and the output end of the exhaust fan 6 is fixedly connected to the inlet of the desulfurization tower 2. A circulating spraying mechanism 4 is installed on the desulfurization tower 2, and a spray head 201 is fixedly installed on the inner top wall of the desulfurization tower 2, and the spray head 201 is connected to the circulating spraying mechanism 4;

[0031] A flue gas inlet pipe 104 is fixedly installed on the top of the dust removal tower 1, an exhaust pipe 205 is fixedly installed on the top of the desulfurization tower 2, and an alkali liquid delivery pipe 206 and a drain pipe 207 are fixedly installed on the side of the desulfurization tower 2, and the drain pipe 207 is located below the alkali liquid delivery pipe 206, and control valves are installed on the exhaust pipe 205, the alkali liquid delivery pipe 206 and the drain pipe 207.

[0032] Specifically, the preliminary dust removal assembly includes a sealing plate 101, a bag dust collector 102 and an ash hopper 103. The sealing plate 101 is fixedly mounted on the inner wall of the dust removal tower 1. The bag dust collector 102 is embedded in the sealing plate 101 and extends downward, and several bag dust collectors 102 are evenly distributed. The ash hopper 103 is fixedly mounted at the bottom of the dust removal tower 1, and the outlet of the dust removal tower 1 is located below the sealing plate 101.

[0033] Specifically, the pulse dust removal mechanism 3 includes an air storage tank 301, a pulse pipeline 302, an air outlet pipeline 303 and a pulse solenoid valve 304. A positioning frame is fixedly installed on the outer side of the dust removal tower 1. The air storage tank 301 is fixedly installed on the positioning frame, and a pulse pipeline 302 is fixedly connected to the tank mouth of the air storage tank 301. A plurality of evenly distributed air outlet pipelines 303 are fixedly connected to the pulse pipeline 302. A pulse solenoid valve 304 is installed on each air outlet pipeline 303. The other end of the air outlet pipeline 303 is fixedly connected to the dust removal tower 1, and the air outlet pipeline 303 is located below the sealing plate 101.

[0034] Specifically, a filter layer 202 is fixedly installed in the desulfurization tower 2, and the entrance of the desulfurization tower 2 is located above the filter layer 202, the alkali solution delivery pipe 206 is located below the filter layer 202, a stirring shaft is rotatably installed on the inner top wall of the desulfurization tower 2, a spiral fan blade 203 is fixedly installed on the stirring shaft, and the spiral fan blade 203 is located below the filter layer 202, a breaking rod is fixedly installed on the part of the stirring shaft located above the filter layer 202, and legs are fixedly installed at the bottom of the dust removal tower 1 and the desulfurization tower 2, the legs on the desulfurization tower 2 are fixedly installed with a motor seat, and a drive motor 204 is fixedly installed on the motor seat, and the output shaft of the drive motor 204 is fixedly connected to the stirring shaft.

[0035] Specifically, the circulating spraying mechanism 4 includes a circulating cylinder, a first circulating pipe 401, a second circulating pipe 402, a sealing dynamic piston 403 and a connecting rod body 404. The first circulating pipe 401 is fixedly installed at the lower end of the side of the desulfurization tower 2, and the circulating cylinder is fixedly installed at the other end of the first circulating pipe 401. The second circulating pipe 402 is fixedly installed on the circulating cylinder, and the other end of the second circulating pipe 402 extends upward and is fixedly connected to the spray head 201. A sealing dynamic piston 403 is slidably installed in the circulating cylinder, and a connecting rod body 404 is fixedly connected to the top of the sealing dynamic piston 403. The connecting rod body 404 is slidably penetrated and installed on the top of the circulating cylinder. Check valves 405 are installed in the first circulating pipe 401 and the second circulating pipe 402. The check valve 405 in the first circulating pipe 401 only allows fluid to pass through the desulfurization tower 2 into the circulating cylinder, and the check valve 405 in the second circulating pipe 402 only allows fluid to pass through the circulating cylinder into the second circulating pipe 402.

[0036] Specifically, a bracket is fixedly connected to the side of the desulfurization tower 2, and a guide rail 7 is fixedly installed on the bracket, a Z-axis screw rod 8 is rotatably installed in the guide rail 7, a linear slider 9 is threadedly installed on the Z-axis screw rod 8, and the linear slider 9 is slidably connected in the guide rail 7, the front side of the linear slider 9 moves out of the guide rail 7 and is fixedly connected to the connecting rod body 404, a stepper motor 10 is fixedly installed on the top of the guide rail 7, and the Z-axis screw rod 8 is fixedly connected to the output end of the stepper motor 10.

[0037] The specific implementation method of this embodiment is as follows: the flue gas of the thermal power plant is firstly input into the dust removal tower 1 through the flue gas inlet pipe 104, so that each bag dust collector 102 filters the dust in the flue gas, and at the same time, the pulse dust removal mechanism 3 works, opens the pulse solenoid valve 304, and allows the high-speed airflow to enter the dust removal tower 1 through the air outlet pipeline 303 to clean up the dust attached to the bag dust collector 102, avoid the bag dust collector 102 from being blocked and affecting the filtering effect, so that the dust in the flue gas can be quickly removed and collected and discharged by the ash hopper 103;

[0038] The exhaust fan 6 is operated to allow the flue gas from the thermal power plant treated by the dust removal tower to pass into the desulfurization tower 2, the control valve on the alkali solution delivery pipe 206 is opened, and the alkali solution for desulfurization is delivered to the desulfurization tower 2 from the alkali solution delivery pipe 206, and then the control valve is closed, and the drive motor 204 is operated to drive the stirring shaft to rotate, and then the spiral fan blade 203 rotates to suck the flue gas entering the desulfurization tower 2 downward and contact with the alkali solution, so as to react, and the filter layer 202 performs secondary filtration on the flue gas moving downward to reduce particulate impurities;

[0039] During the reaction process, the stepper motor 10 works, which drives the Z-axis screw 8 to rotate, and then the linear slider 9 drives the connecting rod body 404 to move up and down, so that the sealed moving piston 403 slides up and down in the circulation cylinder, so as to suck the alkali liquid mixture in the desulfurization tower 2 into the circulation cylinder through the first circulation pipe 401, and then spray it out through the second circulation pipe 402 and the spray head 201, so that the alkali liquid mixture can fully contact with the flue gas, and the stirring shaft drives the breaking rod to rotate, and the breaking rod beats the sprayed alkali liquid mixture to increase the contact area, which brings convenience to desulfurization purification;

[0040] The treated qualified flue gas is then discharged through the exhaust pipe 205, and the waste liquid is discharged through the drain pipe 207.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency thermal power flue gas desulfurization and purification treatment device, characterized by: The invention comprises a dust removal tower (1) and a desulfurization tower (2), wherein a preliminary dust removal component is arranged in the dust removal tower (1), and a pulse dust removal mechanism (3) is arranged on the outer side of the dust removal tower (1), a connecting crossbeam (5) is fixedly installed between the dust removal tower (1) and the desulfurization tower (2), an exhaust fan (6) is fixedly installed on the connecting crossbeam (5), an input end of the exhaust fan (6) is fixedly connected to the outlet of the dust removal tower (1), and an output end of the exhaust fan (6) is fixedly connected to the inlet of the desulfurization tower (2), a circulating spraying mechanism (4) is installed on the desulfurization tower (2), a spray head (201) is fixedly installed on the inner top wall of the desulfurization tower (2), and the spray head (201) is connected to the circulating spraying mechanism (4); A flue gas inlet pipe (104) is fixedly installed on the top of the dust removal tower (1), an exhaust pipe (205) is fixedly installed on the top of the desulfurization tower (2), an alkali liquid delivery pipe (206) and a drain pipe (207) are fixedly installed on the side of the desulfurization tower (2), and the drain pipe (207) is located below the alkali liquid delivery pipe (206), and control valves are installed on the exhaust pipe (205), the alkali liquid delivery pipe (206) and the drain pipe (207).

2. The high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 1 is characterized by: The preliminary dust removal assembly comprises a sealing plate (101), a bag dust collector (102) and an ash hopper (103); the sealing plate (101) is fixedly mounted on the inner wall of the dust removal tower (1); the bag dust collector (102) is embedded in the sealing plate (101) and extends downward, and a plurality of bag dust collectors (102) are evenly distributed; the ash hopper (103) is fixedly mounted on the bottom of the dust removal tower (1); and the outlet of the dust removal tower (1) is located below the sealing plate (101).

3. The high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 2 is characterized by: The pulse dust removal mechanism (3) comprises an air storage tank (301), a pulse pipeline (302), an air outlet pipeline (303) and a pulse solenoid valve (304); a positioning frame is fixedly installed on the outer side of the dust removal tower (1); the air storage tank (301) is fixedly installed on the positioning frame, and a pulse pipeline (302) is fixedly connected to the tank mouth of the air storage tank (301); a plurality of evenly distributed air outlet pipelines (303) are fixedly connected to the pulse pipeline (302); each of the air outlet pipelines (303) is installed with a pulse solenoid valve (304); the other end of the air outlet pipeline (303) is fixedly connected to the dust removal tower (1), and the air outlet pipeline (303) is located below the sealing plate (101).

4. The high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 1 is characterized by: A filter layer (202) is fixedly installed in the desulfurization tower (2), and the inlet of the desulfurization tower (2) is located above the filter layer (202), and the alkali solution delivery pipe (206) is located below the filter layer (202). A stirring shaft is rotatably installed on the inner top wall of the desulfurization tower (2), and a spiral fan blade (203) is fixedly installed on the stirring shaft, and the spiral fan blade (203) is located below the filter layer (202). A breaking rod is fixedly installed on the part of the stirring shaft located above the filter layer (202).

5. The high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 4 is characterized by: The bottoms of the dust removal tower (1) and the desulfurization tower (2) are both fixedly mounted with supporting legs, the supporting legs on the desulfurization tower (2) are fixedly mounted with a motor seat, and a driving motor (204) is fixedly mounted on the motor seat, and the output shaft of the driving motor (204) is fixedly connected to the stirring shaft.

6. The high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 1 is characterized by: The circulating spraying mechanism (4) comprises a circulating cylinder, a first circulating pipe (401), a second circulating pipe (402), a sealing movable piston (403) and a connecting rod body (404), wherein the first circulating pipe (401) is fixedly mounted on the lower end of the side of the desulfurization tower (2), the circulating cylinder is fixedly mounted on the other end of the first circulating pipe (401), the second circulating pipe (402) is fixedly mounted on the circulating cylinder, and the other end of the second circulating pipe (402) extends upward and is fixedly connected to the spray head (201), a sealing movable piston (403) is slidably mounted in the circulating cylinder, and the top of the sealing movable piston (403) is fixedly connected to a connecting rod body (404), and the connecting rod body (404) is slidably penetrated and mounted on the top of the circulating cylinder.

7. A high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 6, characterized in that: Both the first circulation pipe (401) and the second circulation pipe (402) are installed with a one-way valve (405). The one-way valve (405) in the first circulation pipe (401) only allows the fluid to pass through the desulfurization tower (2) and enter the circulation drum, while the one-way valve (405) in the second circulation pipe (402) only allows the fluid to pass through the circulation drum and enter the second circulation pipe (402).

8. The high-efficiency thermal power flue gas desulfurization and purification treatment device according to claim 7 is characterized by: A bracket is fixedly connected to the side of the desulfurization tower (2), and a guide rail (7) is fixedly installed on the bracket. A Z-axis screw rod (8) is rotatably installed in the guide rail (7), and a linear slider (9) is threadedly installed on the Z-axis screw rod (8). The linear slider (9) is slidably connected in the guide rail (7). The front side of the linear slider (9) moves out of the guide rail (7) and is fixedly connected to the connecting rod body (404). A stepper motor (10) is fixedly installed on the top of the guide rail (7), and the Z-axis screw rod (8) is fixedly connected to the output end of the stepper motor (10).

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