CN114931043A - An integrated device for supplementing light and warming for facility greenhouses - Google Patents

Abstract

The invention discloses a light supplementing and temperature increasing integrated device for a greenhouse, which belongs to the technical field of light supplementing and temperature increasing of the greenhouse, wherein a connecting pipe, an air pump and other devices are arranged, the flowing speed of air in the connecting pipe and a protective frame can be increased after the air pump is started, so that the heat radiating effect of a heat radiating fin can be enhanced, the service life of a light supplementing lamp body is prolonged, heat emitted by a plurality of lamp bodies can be pumped into an air pipe through an air outlet pipe and a residual temperature frame, when the temperature in the facility is too low, a heating wire and a fan are started to increase the temperature in the facility, hot air guided into the air pipe from the residual temperature frame can be blown into the facility together, the heat emitted by the lamp bodies is utilized, the temperature of the residual temperature frame discharged into the air pipe is detected through the arrangement of a temperature sensing ball and other devices, the power of the heating wire is adaptively adjusted while the heat emitted by the lamp bodies is utilized, the energy-saving effect is achieved, and the hot air blown out from the air pipe is more stable.

Description

An integrated device for supplementing light and warming for facility greenhouses

technical field

The invention relates to the technical field of light-filling and temperature-raising for facility greenhouses, and more particularly to an integrated device for light-filling and temperature-raising for facility greenhouses.

Background technique

Facility greenhouse crop planting fill light, also known as plant fill light, is in accordance with the natural law of plant growth, according to the principle that plants use sunlight for photosynthesis, using light instead of sunlight to provide the light source required for the growth and development of greenhouse plants of a lamp.

The supplementary light is mainly used in spring, autumn and winter, and in the spring, autumn and winter, a heating device needs to be installed in the greenhouse of the facility, so the supplementary light and temperature increase in the facility mostly exist at the same time, and the supplementary light mostly adopts LED. Lamps and LED lamps emit a lot of heat when in use, but the facility needs to maintain a relatively high temperature, so the heat dissipation effect of the lamps will be affected, so further improvement is required.

SUMMARY OF THE INVENTION

1. Technical problems to be solved

In view of the problems existing in the prior art, the purpose of the present invention is to provide an integrated device for supplementary light and temperature increase for a facility greenhouse, which can increase the connection pipe and the interior of the protective frame through the setting of the connecting pipe and the air pump and other devices after the air pump is started. The flow speed of the air can enhance the heat dissipation of the heat sink and prolong the service life of the lamp body. At the same time, the heat emitted by multiple lamp bodies can be pumped into the air duct through the air outlet pipe and the residual temperature frame. When the temperature of the lamp is too low, start the heating wire and the fan to raise the temperature in the facility, and at the same time, the hot air introduced into the air duct from the residual temperature frame can be blown into the facility together, and the heat emitted by the lamp body has been utilized. Through the installation of temperature sensing bulbs and other devices, the temperature of the residual temperature frame discharged into the air duct is detected. While utilizing the heat emitted by the lamp body, the power of the heating wire is adaptively adjusted to achieve the effect of energy saving. Make the hot air blowing from the air duct more stable.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model relates to an integrated device for supplementary light and temperature increase for a facility greenhouse, comprising a plurality of supplementary light bodies, air pumps and air ducts installed in a facility; The protective frame is sleeved on the outer side of the heat sink, a connecting pipe is communicated between each two of the protective frames, the inner wall of the air duct is installed with an electric heating wire and a fan, and the bottom end of the air duct is fixedly connected with a residual temperature frame, outer frame, and controller. A knob sensor is installed on the inner wall of the outer frame, a passive toothed belt is fixedly connected to the outer wall of the knob sensor, and the connecting pipe at the end communicates with the input end of the air pump. An air outlet pipe is communicated between the output end of the air pump and the residual temperature frame, the inner wall of the residual temperature frame is fixedly connected with a temperature sensing bulb, the side wall of the temperature sensing bulb is fixedly connected with a right pipe, and one end of the right pipe extends To the outside of the residual temperature frame, the inner wall of the right tube is fixedly connected with an elastic film, the side wall of the outer frame is fixedly connected with a left tube, one end of the left tube extends to the outside of the outer frame, and the right tube is connected to the outer frame. The left pipe is connected, the inner wall of the left pipe is slidably connected with a piston, the side wall of the piston is fixedly connected with a telescopic plate, and the side wall of the telescopic plate close to the passive toothed belt is fixedly connected with a gear belt, the gear The belt meshes with the driven toothed belt.

Further, the interior of the temperature sensing bulb is filled with expansion liquid, the heating wire and the knob sensor are electrically connected to the controller, and the controller is electrically connected to the heating wire. Yes, but in order to keep the temperature in the facility relatively stable, it is impossible to determine how much power the heating wire should work with. Through the setting of the expansion liquid, when the hot air is discharged into the air duct through the residual temperature frame, it can affect the temperature inside the temperature sensing bulb. The expansion liquid is heated. After the expansion liquid is heated, it expands to make the elastic film bulge. At the same time, under the action of the piston, the telescopic plate is pushed to move. When the telescopic plate moves, the knob sensor can be rotated. At this time, the knob sensor can transmit electrical signals to the controller. The controller then sends an instruction to the heating wire to make it run at the corresponding power. For example, if the temperature discharged into the air duct from the residual temperature frame is 30 degrees, the heating wire does not need to run at a higher power. When the temperature in the air duct is 10°, the heating wire should run at a higher power. Through the above setting, the heat emitted from the lamp body is utilized, and the hot air blown from the air duct is more stable.

Further, a lamp sensor is installed on the outer wall of one of the protective frames, and the lamp sensor is electrically connected to the air pump. Specifically, the lamp sensor belongs to a kind of temperature sensor. Through the setting of the lamp sensor, when the temperature in the protective frame exceeds When the preset value of the lamp sensor is set, the lamp sensor sends an electric signal to the air pump to start it, which avoids the situation that the heat emitted by the lamp body is difficult to dissipate.

Further, a temperature sensor is installed in the facility greenhouse, and the temperature sensor is electrically connected to the heating wire and the fan. Through the setting of the temperature sensor, when the temperature in the facility greenhouse is low, electricity can be sent to the heating wire and the fan. signal to activate.

Further, a light sensor is installed in the greenhouse of the facility, and a plurality of lamp bodies of the light sensor are electrically connected. Through the setting of the light sensor, when the light in the facility is dark, the light sensor can send an electrical signal to the lamp body. Crops in the facility are irradiated.

Further, the inside of the right pipe and the left pipe is filled with driving fluid, and the driving fluid is located between the piston and the elastic membrane. The setting of the driving fluid enables the piston to move with the movement of the elastic membrane.

Further, the diameter of the right tube is larger than the diameter of the left tube.

Further, one end of the connecting pipe away from the air pump extends to the outside of the greenhouse. Since the temperature in the facility greenhouse may be relatively high, the connection pipe and the inside of the protective frame can flow through the outside of the greenhouse by setting the connecting pipe. air, which further increases the heat dissipation effect of the heat sink.

Further, a filter cover is fixedly connected to one end of the connecting pipe located on the outside of the greenhouse of the facility. The setting of the filter cover can filter the air entering the connecting pipe and prevent impurities in the outside air from entering the connecting pipe. create pollution.

Further, the rotating end of the knob sensor penetrates through the bottom end of the outer frame and is rotatably connected with it, the bottom surface of the outer frame is fixedly connected with a dial, and the dial is sleeved on the outer side of the knob sensor. A pointer is fixedly connected to the side wall of the bottom end. Through the setting of the dial, the temperature of the air blown out of the residual temperature frame can be known when the knob sensor is rotated.

3. Beneficial effects

Compared with the prior art, the advantages of the present invention are:

(1) In this scheme, through the installation of connecting pipes and air pumps, after the air pump is started, the flow speed of the air inside the connecting pipes and the protective frame can be increased, which can enhance the heat dissipation of the heat sink and prolong the service life of the lamp body. At the same time, the heat emitted by multiple lamp bodies can be pumped into the air duct through the air outlet pipe and the residual temperature frame. When the temperature in the facility is too low, the electric heating wire and the fan are started to increase the temperature in the facility, and at the same time from the residual temperature. The hot air introduced into the air duct by the temperature frame can be blown into the facility at the same time, and the heat emitted by the lamp body can be utilized, and the temperature of the residual temperature frame discharged into the air duct can be detected through the installation of temperature sensing bulbs and other devices. While utilizing the heat emitted by the lamp body, the power of the heating wire can be adjusted adaptively to achieve the effect of energy saving and make the hot air blown from the air duct more stable.

(2) The interior of the temperature sensing bulb is filled with expansion liquid, the heating wire and the knob sensor are electrically connected to the controller, and the controller is electrically connected to the heating wire. Since the temperature blown into the air duct by the residual temperature frame is uncertain, but in order to maintain The temperature in the facility is relatively stable, so it is impossible to determine how much power the heating wire should work with. However, through the setting of the expansion liquid, when the hot air is discharged into the air duct through the residual temperature frame, the expansion liquid in the temperature sensing bulb can be heated and expanded. When the liquid is heated, it expands to make the elastic membrane bulge, and at the same time, under the action of the piston, it pushes the telescopic plate to move. When the telescopic plate moves, it can drive the knob sensor to rotate. At this time, the knob sensor can transmit an electrical signal to the controller, and the controller sends an electric signal to the heating wire. Send an instruction to make it run at the corresponding power. For example, if the temperature discharged from the residual temperature frame into the air duct is 30 degrees, the heating wire does not need to run at a higher power. If the temperature discharged from the residual temperature frame into the air duct is 10 °, the heating wire should run at a higher power, and through the above setting, the heat emitted from the lamp body is utilized, and the hot air blown from the air duct is more stable.

(3) A lamp sensor is installed on the outer wall of one of the protective frames, and the lamp sensor is electrically connected to the air pump. Specifically, the lamp sensor belongs to a kind of temperature sensor. Through the setting of the lamp sensor, when the temperature in the protective frame exceeds the preset value of the lamp sensor When setting the value, the lamp sensor sends an electric signal to the air pump to start it, which avoids the situation that the heat emitted by the lamp body is difficult to dissipate.

(4) A temperature sensor is installed in the facility greenhouse. The temperature sensor is electrically connected to the heating wire and the fan. Through the setting of the temperature sensor, when the temperature in the facility greenhouse is low, an electric signal can be sent to the heating wire and the fan to start it. .

(5) A light sensor is installed in the greenhouse of the facility, and the light sensor is electrically connected with multiple lamp bodies. Through the setting of the light sensor, when the light in the facility is dark, the light sensor can send an electrical signal to the lamp body to the crops in the facility. Irradiate.

(6) The inside of the right pipe and the left pipe is filled with driving fluid, and the driving fluid is located between the piston and the elastic membrane. Through the setting of the driving fluid, the piston can move well with the movement of the elastic membrane.

(7) One end of the connecting pipe away from the air pump extends to the outside of the facility greenhouse. Since the temperature in the facility greenhouse may be relatively high, the connection pipe and the inside of the protective frame can flow through the outside of the greenhouse by setting the connecting pipe. air, which further increases the heat dissipation effect of the heat sink.

(8) A filter cover is fixedly connected to one end of the connecting pipe located on the outside of the facility greenhouse. The setting of the filter cover can filter the air entering the connecting pipe and prevent impurities in the outside air from entering the connecting pipe and causing pollution. .

(9) The rotating end of the knob sensor runs through the bottom end of the outer frame and is rotatably connected with it. The bottom surface of the outer frame is fixedly connected with a dial, which is sleeved on the outer side of the knob sensor, and the side wall of the bottom end of the knob sensor is fixedly connected with a pointer , Through the setting of the dial, you can know the temperature of the air blown out of the residual temperature frame when the knob sensor is rotated.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the front view sectional structure schematic diagram of the lamp body of the present invention;

Fig. 3 is the three-dimensional structure schematic diagram of the lamp body of the present invention;

Fig. 4 is the front sectional structure schematic diagram of the air duct of the present invention;

Fig. 5 is the front sectional structure schematic diagram of the residual temperature frame and the outer frame of the present invention;

Fig. 6 is the top sectional structure schematic diagram of the outer frame of the present invention;

Fig. 7 is the state schematic diagram when the expansion liquid of the present invention is heated;

8 is a schematic diagram of the state when the telescopic plate of the present invention drives the knob sensor to rotate;

FIG. 9 is a schematic top view of the structure of the outer frame of the present invention.

Description of the labels in the figure:

1. Fill light body; 101, heat sink; 102, protective frame; 103, lamp sensor; 2, connecting pipe; 3, air pump; 4, air outlet pipe; 5, air duct; 501, electric heating wire; 502, fan; 6. Residual temperature frame; 601, temperature sensing ball; 602, right tube; 603, left tube; 604, elastic membrane; 605, piston; 606, telescopic plate; 607, gear belt; 7, outer frame; 701, knob sensor ; 702, passive toothed belt; 8, controller; 9, filter cover; 10, light sensor; 11, temperature sensor; 12, dial.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the orientations shown in the accompanying drawings Or the positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "provided with", "sleeve/connection", "connection", etc., should be understood in a broad sense, such as " Connection", which can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal connection between two components. of connectivity. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1:

Please refer to Figure 1-8, an integrated device for supplementary light and temperature increase for a facility greenhouse, comprising a plurality of supplementary light bodies 1, an air pump 3 and an air duct 5 installed in the facility greenhouse, and a plurality of supplementary light bodies 1 A heat sink 101 and a protective frame 102 are fixedly connected to the outer wall of the air duct 101 , the protective frame 102 is sleeved on the outer side of the heat sink 101, a connecting pipe 2 is communicated between each two protective frames 102, and the inner wall of the air duct 5 is installed with electric heating wires 501 and the fan 502, the bottom end of the air duct 5 is fixedly connected with the residual temperature frame 6, the outer frame 7, the controller 8, the inner wall of the outer frame 7 is installed with a knob sensor 701, and the outer wall of the knob sensor 701 is fixedly connected with a passive toothed belt 702, The connecting pipe 2 at the end is communicated with the input end of the air pump 3, the air outlet pipe 4 is communicated between the output end of the air pump 3 and the residual temperature frame 6, and the inner wall of the residual temperature frame 6 is fixedly connected with a temperature sensing ball 601. A right pipe 602 is fixedly connected to the side wall of the ball 601, one end of the right pipe 602 extends to the outside of the residual temperature frame 6, an elastic film 604 is fixedly connected to the inner wall of the right pipe 602, and a left pipe 603 is fixedly connected to the side wall of the outer frame 7. , one end of the left tube 603 extends to the outside of the outer frame 7, the right tube 602 is communicated with the left tube 603, the inner wall of the left tube 603 is slidably connected with a piston 605, and the side wall of the piston 605 is fixedly connected with a telescopic plate 606, the telescopic plate 606 is fixedly connected with a gear belt 607 on the side wall near the passive toothed belt 702, and the gear belt 607 is engaged with the passive toothed belt 702; through the above setting, the air pump 3 can be activated to increase the flow speed of the air inside the connecting pipe 2 and the protective frame 102, The heat sink 101 can be used to enhance heat dissipation, prolong the service life of the fill light body 1, and at the same time, the heat emitted by the plurality of fill light bodies 1 can be pumped to the air duct through the air outlet pipe 4 and the residual temperature frame 6. 5, when the temperature in the facility is too low, start the heating wire 501 and the fan 502 to raise the temperature in the facility, and at the same time, the hot air introduced into the air duct 5 from the residual temperature frame 6 can be blown into the facility together, The heat emitted by the fill light body 1 is utilized.

Please refer to Fig. 1-8, the interior of the temperature sensing ball 601 is filled with expansion liquid, the heating wire 501 and the knob sensor 701 are electrically connected to the controller 8, and the controller 8 is electrically connected to the heating wire 501; The temperature in the pipe 5 is uncertain, but in order to keep the temperature in the facility relatively stable, it cannot be determined how much power the heating wire 501 should work with, and through the setting of the expansion liquid, the hot air is discharged into the air duct through the residual temperature frame 6 5, the expansion liquid in the temperature sensing ball 601 can be heated, and the expansion liquid expands after being heated to make the elastic film 604 bulge, and at the same time, under the action of the piston 605, the telescopic plate 606 is pushed to move, and the telescopic plate 606 can drive the knob when moving. When the sensor 701 rotates, the knob sensor 701 can transmit an electrical signal to the controller 8, and the controller 8 sends an instruction to the heating wire 501 to make it run at the corresponding power. If the temperature is 30 degrees, the heating wire 501 does not need to run with a larger power. If the temperature discharged from the residual temperature frame 6 into the air duct 5 is 10°, the heating wire 501 should run with a larger power. The arrangement makes the hot air blown from the air duct 5 more stable while utilizing the heat emitted by the fill light body 1 .

Please refer to FIG. 1-2 and FIG. 4 , a lamp sensor 103 is installed on the outer wall of one of the protective frames 102 , and the lamp sensor 103 is electrically connected to the air pump 3 . Specifically, the lamp sensor 103 belongs to a type of temperature sensor. Setting, when the temperature in the protective frame 102 exceeds the preset value of the lamp sensor 103, the lamp sensor 103 sends an electrical signal to the air pump 3 to start it, which avoids the situation that the heat emitted by the supplementary lamp body 1 is difficult to dissipate. A temperature sensor 11 is installed in the greenhouse, and the temperature sensor 11 is electrically connected to the heating wire 501 and the fan 502. Through the setting of the temperature sensor 11, when the temperature in the greenhouse of the facility is low, an electrical signal can be sent to the heating wire 501 and the fan 502. To start it, a light sensor 10 is installed in the greenhouse of the facility, and the light sensor 10 is electrically connected to more than one fill light body 1. Through the setting of the light sensor 10, when the light in the facility is dark, the light sensor 10 can fill in the light. The lamp body 1 emits electrical signals to illuminate the crops in the facility.

Please refer to Fig. 5, Fig. 7 and Fig. 9. The right pipe 602 and the left pipe 603 are filled with driving fluid, and the driving fluid is located between the piston 605 and the elastic membrane 604. Through the setting of the driving fluid, the piston 605 can follow the As the elastic membrane 604 moves, the diameter of the right tube 602 is larger than the diameter of the left tube 603, the rotating end of the knob sensor 701 penetrates the bottom end of the outer frame 7 and is rotatably connected with it, and the bottom surface of the outer frame 7 is fixedly connected with a dial 12. The dial 12 is sleeved on the outside of the knob sensor 701. The bottom side wall of the knob sensor 701 is fixedly connected with a pointer. Through the setting of the dial 12, the temperature of the air blown out of the residual temperature frame 6 can be known when the knob sensor 701 is rotated.

Referring to FIG. 1 , one end of the connecting pipe 2 away from the air pump 3 extends to the outside of the facility greenhouse. Since the temperature in the facility greenhouse may be relatively high, the connecting pipe 2 and the protective frame 102 are set to make the connecting pipe 2 and the protective frame 102 relatively high. The inside can circulate the air outside the facility, which further increases the heat dissipation effect of the heat sink 101. One end of the connecting pipe 2 located outside the facility greenhouse is fixedly connected with a filter cover 9. The air in 2 plays the role of filtration, preventing impurities in the outside air from entering the connecting pipe 2 and causing pollution.

The above description is only a preferred embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical scope of the present invention, according to the technical solution of the present invention and its improvement concept, equivalently replaces or changes, should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides an integrative device of light filling temperature rise for facility warmhouse booth, is including installing a plurality of light filling lamp body (1), air pump (3) and tuber pipe (5) in facility warmhouse booth, its characterized in that: a plurality of radiating fins (101) and protective frames (102) are fixedly connected to the outer wall of the light supplementing lamp body (1), the protective frames (102) are sleeved outside the radiating fins (101), every two protective frames (102) are communicated with each other to form connecting pipes (2), the inner wall of the air pipe (5) is provided with heating wires (501) and a fan (502), the bottom end of the air pipe (5) is fixedly connected with a residual heat frame (6), an outer frame (7) and a controller (8), the inner wall of the outer frame (7) is provided with a knob sensor (701), the outer wall of the knob sensor (701) is fixedly connected with a passive toothed belt (702), the connecting pipe (2) positioned at the end part is communicated with the input end of the air pump (3), an air outlet pipe (4) is communicated between the output end of the air pump (3) and the residual heat frame (6), and the inner wall of the residual heat frame (6) is fixedly connected with a temperature sensing ball (601), the utility model discloses a temperature sensing device, including temperature sensing ball (601), frame, right pipe (602), frame, expansion plate (606), right pipe (602), inner wall fixedly connected with elastic membrane (604), the lateral wall fixedly connected with left pipe (603) of frame (7), the one end of left pipe (603) extends to the outside of frame (7), right pipe (602) is linked together with left pipe (603), the inner wall sliding connection of left pipe (603) has piston (605), fixedly connected with expansion plate (606) on the lateral wall of piston (605), fixedly connected with toothed belt (607) on expansion plate (606) are close to the lateral wall of passive toothed belt (702), toothed belt (607) and passive toothed belt (702) mesh mutually.

2. The light supplementing and temperature increasing integrated device for the greenhouse of the greenhouse as claimed in claim 1, wherein: the temperature sensing ball (601) is filled with expansion liquid, the electric heating wire (501) and the knob sensor (701) are electrically connected with the controller (8), and the controller (8) is electrically connected with the electric heating wire (501).

3. The light supplementing and temperature increasing integrated device for the greenhouse of the facility greenhouse as claimed in claim 1, wherein: and a lamp sensor (103) is arranged on the outer wall of one of the protective frames (102), and the lamp sensor (103) is electrically connected with the air pump (3).

4. The light supplementing and temperature increasing integrated device for the greenhouse of the facility greenhouse as claimed in claim 1, wherein: the greenhouse is characterized in that a temperature sensor (11) is installed in the facility greenhouse, and the temperature sensor (11) is electrically connected with an electric heating wire (501) and a fan (502).

5. The light supplementing and temperature increasing integrated device for the greenhouse of the greenhouse as claimed in claim 1, wherein: install light sensor (10) in the facility warmhouse booth, a plurality of light filling lamp body (1) electricity of light sensor (10) are connected.

6. The light supplementing and temperature increasing integrated device for the greenhouse of the facility greenhouse as claimed in claim 1, wherein: the right tube (602) and the left tube (603) are filled with a driving liquid, and the driving liquid is located between the piston (605) and the elastic membrane (604).

7. The light supplementing and temperature increasing integrated device for the greenhouse of the facility greenhouse as claimed in claim 1, wherein: the diameter of the right tube (602) is larger than the diameter of the left tube (603).

8. The light supplementing and temperature increasing integrated device for the greenhouse of the facility greenhouse as claimed in claim 1, wherein: one end of the connecting pipe (2) far away from the air pump (3) extends to the outer side of the greenhouse.

9. The light supplementing and temperature increasing integrated device for the greenhouse of the greenhouse as claimed in claim 8, wherein: one end of the connecting pipe (2) positioned outside the facility greenhouse is fixedly connected with a filter cover (9).

10. The light supplementing and temperature increasing integrated device for the greenhouse of the facility greenhouse as claimed in claim 1, wherein: the utility model discloses a knob sensor, including knob sensor (701), the bottom of frame (7) is run through to the rotatory end of knob sensor (701) and is rotated with it and be connected, the bottom surface fixedly connected with calibrated scale (12) of frame (7), the outside at knob sensor (701) is established in calibrated scale (12) cover, the lateral wall fixedly connected with pointer of knob sensor (701) bottom.

Images