CN113287393B

CN113287393B - Intelligent constant-quantity precision seeding device for rice seedling tray seedling raising

Info

Publication number: CN113287393B
Application number: CN202110467046.4A
Authority: CN
Inventors: 黄新杰; 周政
Original assignee: Hunan Biological and Electromechanical Polytechnic
Current assignee: Hunan Biological and Electromechanical Polytechnic
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-09-13
Anticipated expiration: 2041-04-28
Also published as: CN113287393A

Abstract

The invention discloses an intelligent constant precision seeding device for rice seedling tray seedling raising, and relates to the technical field of seedling trays. The utility model provides a rice seedling dish sprout cultivation intelligence constant precision planter, the on-line screen storage device comprises a base, conveyer belt and support column, the conveyer belt is located the base top, be equipped with the seedling dish on the conveyer belt, conveyer belt one side is equipped with the operation panel, the conveyer belt top is equipped with the seeding case, seeding case upper end is equipped with the bin, bin one side is equipped with the water tank, the feed inlet has been seted up at the storage box top, the bin bottom is equipped with the bleeder valve, the bleeder valve lower extreme is equipped with feed divider, seeding bottom of the case portion is equipped with the blown down tank, the blown down tank upper end is equipped with vibration generator, the vibration board upper end is equipped with the vibration board, the region that the vibration board corresponds the blown down tank is equipped with the net, the seeding case is kept away from operation panel one end and is built-in to have motor and transmission. By adopting the scheme of the invention, the requirement of people on quantitative and uniform seeding and seedling raising of the intelligent constant precise seeding device for rice seedling tray seedling raising can be met.

Description

Intelligent constant-quantity precision seeding device for rice seedling tray seedling raising

Technical Field

The invention belongs to the technical field of seedling raising trays, and relates to an intelligent constant precision seeding device for raising rice seedlings on a rice seedling tray.

Background

In order to improve the efficiency of rice transplanting and the yield of rice, more and more rice fields are mechanically transplanted by rice transplanters. The mechanical transplanting rice seedling raising is a key link in a mechanical transplanting rice high-yield cultivation technical system, and compared with a conventional rice seedling raising mode, the mechanical transplanting rice seedling raising has the remarkable characteristics of high seeding density and high standardization requirement. The seedling raising tray is an indispensable component of a rice transplanter as a special tool for raising seedlings by mechanical transplanting, has the main function of realizing the seedling raising process of rice seedlings, is made of polyvinyl chloride serving as a raw material through processing and plastic sucking by a special process formula, and has the characteristics of light weight, easiness in carrying, convenience in storage and low use cost. The conventional rice seedling tray is generally used for manually scattering seeds, so that the manual seed scattering efficiency is low, the labor cost is high, the seed scattering is not uniform, the seeds are easy to accumulate on the seedling tray, and the germination rate of the seeds is influenced.

In order to solve the problems, the Chinese patent (publication No. CN109964595A) discloses an intelligent constant precision seeding device for rice seedling tray seedling cultivation, which comprises a base, a conveyor belt, support plates, a seed box and a linear vibrating screen, wherein the top of the base is fixedly connected with the bottom of the support plates, the number of the support plates is four, the tops of the four support plates are fixedly connected with fixed plates, the tops of the fixed plates are fixedly connected with the bottom of the seed box, the tops of the fixed plates are fixedly connected with the bottom of a water tank, the bottom of the fixed plates is fixedly connected with a fixed box, the left side of the inner cavity of the fixed box is fixedly connected with a rubber block, the right side of the rubber block is fixedly connected with a partition plate, the right side of the partition plate is fixedly connected with one side of the linear vibrating screen, the top and the bottom inside of the fixed box are both provided with first through holes, and the inner surface of the first through holes is fixedly connected with damping springs, the utility model discloses a vibration damping device, including fixed case, shock attenuation spring, screw fixedly connected with rubber pad, the internal fixed surface of second opening is connected with iron plate, the bottom of iron plate and the top fixed connection of rubber pad, the top of iron plate and one side fixed connection of sharp reciprocating sieve, the bottom fixedly connected with of fixed incasement portion inhales the sound sponge.

Although the above-mentioned scheme can vibrate the seed to can carry out machinery through the mode of vibration and broadcast kind, the seed after the vibration all is single throwing motion to one side, can't evenly broadcast in every kind plant hole of sprout cultivation dish, and the device can't quantify simultaneously and broadcast kind, has the limitation.

Disclosure of Invention

The invention aims to provide an intelligent constant-quantity precise seeding device for rice seedling tray seedling raising, which meets the requirement of people on quantitative and uniform seeding and seedling raising of the intelligent constant-quantity precise seeding device for rice seedling tray seedling raising.

In order to solve the technical problems, the technical scheme of the invention is as follows:

an intelligent constant precision seeding device for rice seedling tray seedling raising comprises a base, a conveyor belt and support columns, wherein the conveyor belt is positioned above the base, the outer surface of the conveyor belt is movably connected with a plurality of seedling raising trays, one side of the conveyor belt is provided with an operating platform, a seeding box is arranged above the conveyor belt, the rear side of the seeding box is fixedly connected with the base, the front side of the seeding box is connected with the base through the support columns, the upper end of the seeding box is provided with a storage box, one side of the storage box is provided with a water tank, a weighing device is arranged in the storage box, the top of the storage box is provided with a feed inlet, the bottom of the storage box is provided with a discharge valve, the lower end of the discharge valve is provided with a material distributing device, the bottom of the seeding box is provided with a discharge chute, the inner side of the discharge chute is provided with a spray pipe, one side of the spray pipe is connected with a water inlet pipe communicated with the water tank, the water inlet valve is installed on the water inlet pipe, the upper end of the discharge chute is provided with a vibration generator, the upper end of the vibration plate is provided with a grid corresponding to the discharge chute, the net is provided with the baffle all around, the side of vibration board is opened has logical groove, it has the baffler to lead to the equal sliding connection in groove both sides, be connected with the elasticity rope between two bafflers, the left and right sides that leads to the groove all is equipped with rotates the rotation post of being connected with the seeding case, all be equipped with the frenulum on the rotation post, the other end and the baffler of frenulum are connected, the seeding case is kept away from operation panel one end and is built-in to have motor and transmission, the conveyer belt all is connected with the motor through transmission with the rotation post, the seeding case is close to one side of operation panel and is equipped with control panel, control panel and weighing device, the bleeder valve, the water intaking valve, vibration generator and motor electricity are connected.

The principle and the effect of the technical scheme of the invention are as follows:

when rice seeds are needed to be sowed and raised, the rice seedling raising tray is placed on the conveying belt through the operating platform, then the motor is started to rotate through the control panel, the motor drives the conveying belt to slide, the rice seedling raising tray is moved to the position under the discharging groove, then the discharging valve is opened, quantitative seeds are discharged, the discharged seeds are completely scattered on the grids through the material distribution device, then the vibration generator is started to vibrate the grids, the seeds on the grids are uniformly scattered, then the motor is started, the motor drives the rotating column to rotate through the transmission device, the tying belt and the barrier plate are wound, the seeds on the grids vertically fall into the rice seedling raising tray, the grids on the grids correspond to planting holes of the rice seedling raising tray, then the water inlet valve is opened for watering, and then sowing of the next rice seedling raising tray is performed in a circulating mode.

The intelligent constant precision seeding device for raising rice seedlings in a rice seedling tray is provided with the material distribution device, the vibration generator, the vibration plate, the grids and the separation plate, compared with a linear vibration sieve in the prior art, the energy consumption is lower, the seeds are diffused by the material distribution device in the falling process and are primarily and uniformly carried out, the work required by the vibration generator for uniform vibration is reduced, the seeds vertically fall into the planting holes of the rice seedling tray from the grid blank spaces, and the seeding is more stable and uniform; compared with the prior art, the invention can measure the seed quantity in the storage tank in real time and can quantitatively control the discharge quantity of the seeds; the invention is also provided with a motor and a transmission device, which can be multipurpose and drive the transmission belt and the rotating column to move.

Further, feed divider all is equipped with the connecting rod including dividing the flitch, dividing four angles of flitch upside, and the connecting rod all is connected with the bin, divides the flitch center to open there is the through-hole, is equipped with the backup pad in the through-hole, and the backup pad side is equipped with the branch of being connected with the branch flitch, is equipped with the stand in the backup pad, rotates on the stand to be connected with the spiral leaf that the slope set up, and the stand top is equipped with the dispenser head.

The seed that accessible feed divider will drop like this disperses each region of net automatically to avoid the seed to pile up at the net middle part, the vibration generator of being more convenient for carries out even oscillation to the seed, and the merit of oscillating in-process consumption is littleer simultaneously, more energy saving.

Further, it includes the pivot to store up transmission, the pivot is connected with the output of motor, the one end that the pivot is close to the motor is equipped with the drive block, the drive block overcoat has the action wheel, the action wheel inboard is equipped with the reverse groove, the drive block outside is equipped with the consequent pawl relative with the consequent groove, be close to being equipped with on the rotation post of motor from the driving wheel, the action wheel with from the driving wheel on the cover have same root drive belt, all be equipped with bevel gear on the rotation post, it is equipped with a horizontal pole to sow the incasement side, it is connected with the transmission post to rotate on the horizontal pole, the both ends of transmission post all are equipped with transmission bevel gear, transmission bevel gear meshes with bevel gear mutually.

The motor can be fully utilized, the manufacturing cost is reduced, the driving block, the driving wheel and the driven wheel are driven to rotate through the forward rotation of the motor, the rotating column close to the motor is further driven to rotate, the rotating column close to the motor transmits rotating force to the rotating column on the other side through the transmission bevel gear, the bevel gear and the transmission column, the two rotating columns rotate simultaneously, the partition board is wound up, and automatic downward sowing is realized; when the motor rotates reversely, the forward grooves and the forward pawls ensure that the driving wheels do not move relatively, thereby ensuring the stability of the device.

Furthermore, the position of the rotating shaft corresponding to the conveying belt is fixedly connected with a driving column, a roller is sleeved on the outer side of the driving column, a reverse groove is formed in the inner side of the roller, a reverse pawl corresponding to the reverse groove is arranged on the outer side of the driving column, and the conveying belt is placed on the roller.

Therefore, the multifunctional seeding machine has multiple purposes, and when the motor rotates reversely, the driving column and the roller can be driven to rotate, so that the conveying belt and the seedling raising tray are driven to move, and automatic seeding is carried out.

Furthermore, a sliding groove is formed in the inner side of the through groove, a sliding block is arranged on one side, close to the sliding groove, of the blocking plate, pressure sensors are arranged at two ends of the sliding groove, and the pressure sensors are electrically connected with the water inlet valve and the control panel.

Therefore, the movement condition of the blocking plate can be known in real time through the pressure sensor, when the sliding block moves to be abutted against the pressure sensor, the blocking plate is completely staggered with the grid, and meanwhile, the pressure sensor can generate an electric signal to be sent to the water inlet valve, so that the water inlet valve is opened, and automatic watering is carried out.

Drawings

FIG. 1 is a schematic structural view of an intelligent constant precision seeding device for rice seedling tray seedling raising according to the present invention;

FIG. 2 is a front sectional view of the intelligent constant precision seeding device for rice seedling tray seedling raising of the invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a top sectional view of the intelligent constant precision seeding device for rice seedling tray seedling raising of the invention;

FIG. 5 is a front cross-sectional view taken at B-B of FIG. 4;

FIG. 6 is a top sectional view of the vibration plate;

FIG. 7 is a schematic structural view of a driving wheel;

FIG. 8 is a schematic view of the structure of the drum;

the reference numbers in the figures are as follows: the device comprises a base 1, a conveyor belt 2, a support column 3, a seedling raising tray 4, an operation table 5, a seeding box 6, a storage box 7, a water tank 8, a feed inlet 9, a discharge valve 10, a discharge chute 11, a spray pipe 12, a water inlet pipe 13, a vibration generator 14, a vibration plate 15, a grid 16, a baffle 17, a through groove 18, a blocking plate 19, an elastic rope 20, a rotating column 21, a tying belt 22, a motor 23, a control panel 24, a sliding groove 25, a material separating plate 26, a connecting rod 27, a support plate 28, a support rod 29, a spiral blade 30, a dispersion head 31, a rotating shaft 32, a driving wheel 33, a forward groove 34, a forward pawl 35, a driven wheel 36, a transmission belt 37, a bevel gear 38, a cross rod 39, a transmission column 40, a transmission bevel gear 41, a roller 42, a reverse groove 43 and a reverse pawl 44.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

as shown in figures 1 and 2, an intelligent constant-quantity precision seeding device for rice seedling tray seedling raising comprises a base 1, a conveyor belt 2 and a support column 3, wherein the conveyor belt 2 is positioned above the base 1, the outer surface of the conveyor belt 2 is movably connected with a plurality of seedling raising trays 4, an operation platform 5 is installed on the right side of the conveyor belt 2, a seeding box 6 is installed above the conveyor belt 2, the rear side of the seeding box 6 is fixedly connected with the base 1, the front side of the seeding box 6 is fixedly connected with the base 1 through the support column 3, a storage box 7 is installed at the upper end of the seeding box 6, a water tank 8 is arranged on the right side of the storage box 7, a weighing device is installed in the storage box 7, the bottom of the storage box 7 is in a funnel shape, a feed inlet 9 is formed in the top of the storage box 7, a discharge valve 10 is installed at the bottom of the discharge valve 10, a distributing device is installed at the lower end of the discharge valve 10, as shown in figure 3, the distributing device comprises a distributing plate 26, and connecting rods 27 are connected to four corners on the upper side of the distributing plate 26, the connecting rods 27 are all connected with the lower end of the storage box 7, a through hole is formed in the center of the material distributing plate 26, a supporting plate 28 is arranged in the through hole, a supporting rod 29 is connected to the side edge of the supporting plate 28, the supporting rod 29 is connected with the upper side of the material distributing plate 26, a stand column is arranged in the center of the supporting plate 28, an obliquely arranged spiral blade 30 is rotatably connected to the stand column, and a dispersing head 31 is arranged at the top end of the stand column;

the bottom of the seeding box 6 is provided with a discharge chute 11 corresponding to the position of the discharge valve 10, the discharge chute 11 and the seedling raising tray 4 are arranged in equal size, the right side is connected with a water inlet pipe 13 communicated with the water tank 8, the water inlet pipe 13 is provided with a water inlet valve, the left side below the spray pipe 12 is provided with a limit sensor, the upper end of the discharge chute 11 is provided with a vibration generator 14, the outer side of the vibration generator 14 is surrounded with a circle of sound absorbing sponge, a rubber pad is arranged between the vibration generator 14 and the seeding box 6, the upper end of the vibration generator 14 is provided with a vibration plate 15, the area of the vibration plate 15 corresponding to the discharge chute 11 is provided with a grid 16, as shown in figures 4 and 6, the grid 16 corresponds to the planting hole of the seedling raising tray 4, the periphery of the grid 16 is provided with a baffle 17, the side through groove 18 of the vibration plate 15 is provided with two sides both slidably connected with a separation plate 19, the separation plate 19 is a rubber soft plate, and an elastic rope 20 is connected between the two separation plates 19, a sliding groove 25 is formed in the inner side of the through groove 18, a sliding block is arranged on one side, close to the sliding groove 25, of the blocking plate 19, pressure sensors are mounted at two ends of the sliding groove 25 and electrically connected with a water inlet valve, rotating columns 21 are mounted on the left side and the right side of the through groove 18, the rotating columns 21 are rotatably connected with the sowing box 6, tying belts 22 are mounted on the rotating columns 21, the other ends of the tying belts 22 are connected with the blocking plate 19, and a motor 23 and a transmission device are arranged in the left end of the rear side of the sowing box 6;

as shown in fig. 5, the transmission device includes a rotating shaft 32, the rotating shaft 32 is connected with the output end of the motor 23, one end of the rotating shaft 32 close to the motor 23 is fixedly connected with a driving block, as shown in fig. 7, the driving block is externally sleeved with a driving wheel 33, a forward groove 34 is opened on the inner side of the driving wheel 33, a forward pawl 35 opposite to the forward groove 34 is arranged on the outer side of the driving block, a driven wheel 36 is fixedly connected on the rotating column 21 on the left side, a transmission belt 37 is sleeved on the driving wheel 33 and the driven wheel 36 together, oblique bevel gears 38 are arranged on the rotating columns 21, a cross bar 39 is arranged on the rear side of the sowing box 6, a transmission column 40 is rotatably connected on the cross bar 39, transmission bevel gears 41 are arranged on both ends of the transmission column 40, and the transmission bevel gears 41 are engaged with the oblique bevel gears 38; a driving column is fixedly connected to the position of the rotating shaft 32 corresponding to the conveyor belt 2, as shown in fig. 8, a roller 42 is sleeved outside the driving column, a reverse groove 43 is formed in the inner side of the roller 42, a reverse pawl 44 corresponding to the reverse groove 43 is installed outside the driving column, and the conveyor belt 2 is placed on the roller 42; the conveyor belt 2 and the rotating column 21 are both connected with a motor 23 through a transmission device, a control panel 24 is installed on the right side of the sowing box 6, and the control panel 24 is electrically connected with a weighing device, the discharge valve 10, a water inlet valve, the vibration generator 14 and the pressure sensor and the motor 23.

When rice seeds need to be sowed and raised, the rice seedling raising tray 4 is firstly placed on the conveyor belt 2 through the operating platform 5, then the motor 23 is started to reversely move through the control panel 24, the motor 23 reversely rotates to drive the driving column and the reverse pawl 44 to rotate anticlockwise, the reverse pawl 44 abuts against the reverse groove 43 in the rotating process to further drive the roller 42 to rotate anticlockwise, the roller 42 rotates to drive the conveyor belt 2 and the rice seedling raising tray 4 to move leftwards, when the rice seedling raising tray 4 moves to the position under the discharge groove 11, the limit sensor is opposite to the left side edge of the rice seedling raising tray 4, the limit sensor generates an electric signal to the control panel 24, the motor 23 stops rotating, the discharge valve 10 is opened at the same time, a predetermined amount of seeds are discharged, the descending seeds are bounced to the spiral leaves 30 through the dispersion head 31, the self descending impact force of the seeds drives the spiral leaves 30 to rotate, the spiral leaves 30 to rotate to drive the seeds to do irregular inclined throwing motion, the seeds are completely dispersed on the whole grid 16, part of the seeds pass through the spiral leaves 30 and fall on the grid 16 through the through holes, and then the vibration generator 14 is started to uniformly vibrate the seeds on the grid 16;

after the seeds vibrate uniformly, the vibration generator 14 is closed, the motor 23 is started to rotate positively, the motor 23 rotates positively to drive the driving block and the forward pawl 35 to rotate clockwise, the forward pawl 35 abuts against the forward groove 34 in the rotation process to drive the driving wheel 33 to rotate clockwise, the driving wheel 33 transmits force to the driven wheel 36 through the transmission belt 37 to drive the driven wheel 36 and the left rotating column 21 to rotate, the left rotating column 21 drives the right rotating column 21 to rotate through the bevel gear and the transmission bevel gear 41, the lacing 22 and the barrier plate 19 are furled in the rotation process of the left rotating column 21 and the right rotating column 21, the sliding block on the side edge of the barrier plate 19 moves along the sliding groove 25 in the furling process, when the barrier plate 19 moves to the edge of the grid 16, the seeds all fall into the corresponding seedling raising tray 4 planting holes from the grid 16, and the sliding block abuts against the pressure sensor to generate an electric signal to the control panel 24, the control panel 24 stops the rotation of the motor 23, cancels the force applied on the blocking plate 19, the blocking plate 19 moves back under the elastic action of the elastic rope 20, seals the lower side of the grid 16, opens the water inlet valve for watering, then starts the motor 23, moves the conveyor belt 2, and seeds the subsequent seedling raising tray 4.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a rice seedling dish sprout cultivation intelligence constant precision planter, includes base (1), conveyer belt (2) and support column (3), its characterized in that: the automatic seeding machine is characterized in that the conveyor belt (2) is located above the base (1), a plurality of seedling raising trays (4) are movably connected to the outer surface of the conveyor belt (2), an operation table (5) is arranged on one side of the conveyor belt (2), a seeding box (6) is arranged above the conveyor belt (2), the rear side of the seeding box (6) is fixedly connected with the base (1), the front side of the seeding box (6) is connected with the base (1) through a supporting column (3), a storage box (7) is arranged at the upper end of the seeding box (6), a water tank (8) is arranged on one side of the storage box (7), a weighing device is arranged in the storage box (7), a feeding port (9) is formed in the top of the storage box (7), a discharge valve (10) is arranged at the bottom of the storage box (7), a material distributing device is arranged at the lower end of the discharge valve (10), a discharge groove (11) is formed in the bottom of the seeding box (6), the seeding machine is characterized in that a spraying pipe (12) is arranged on the inner side of the discharge chute (11), one side of the spraying pipe (12) is connected with a water inlet pipe (13) communicated with a water tank (8), a water inlet valve is installed on the water inlet pipe (13), a vibration generator (14) is arranged at the upper end of the discharge chute (11), a vibration plate (15) is arranged at the upper end of the vibration generator (14), a grid (16) is arranged in an area, corresponding to the discharge chute (11), of the vibration plate (15), baffles (17) are arranged on the periphery of the grid (16), a through groove (18) is formed in the side edge of the vibration plate (15), barrier plates (19) are connected to the two sides of the through groove (18) in a sliding mode, an elastic rope (20) is connected between the two barrier plates (19), rotating columns (21) rotatably connected with the seeding box (6) are arranged on the left side and the right side of the through groove (18), and frenulum (22) are arranged on the rotating columns (21), the other end of the tying belt (22) is connected with the blocking plate (19), a motor (23) and a transmission device are arranged in one end, far away from the operating platform (5), of the seeding box (6), the conveying belt (2) and the rotating column (21) are connected with the motor (23) through the transmission device, a control panel (24) is arranged on one side, close to the operating platform (5), of the seeding box (6), and the control panel (24) is electrically connected with the weighing device, the discharge valve (10), the water inlet valve, the vibration generator (14) and the motor (23);

the transmission device comprises a rotating shaft (32), the rotating shaft (32) is connected with the output end of the motor (23), one end of the rotating shaft (32) close to the motor (23) is provided with a driving block, a driving wheel (33) is sleeved outside the driving block, a forward groove (34) is arranged on the inner side of the driving wheel (33), a forward pawl (35) opposite to the forward groove (34) is arranged on the outer side of the driving block, a driven wheel (36) is arranged on the rotating column (21) close to the motor (23), the driving wheel (33) and the driven wheel (36) are sleeved with the same transmission belt (37), the rotating columns (21) are all provided with bevel gears (38), the inner side of the seeding box (6) is provided with a cross rod (39), the cross rod (39) is rotatably connected with a transmission column (40), two ends of the transmission column (40) are respectively provided with a transmission bevel gear (41), and the transmission bevel gears (41) are meshed with the bevel gears (38);

the position that pivot (32) correspond conveyer belt (2) is fixedly connected with drive post, drive post outside cover has cylinder (42), cylinder (42) inboard is equipped with reversing groove (43), the drive post outside is equipped with reverse pawl (44) corresponding with reversing groove (43), conveyer belt (2) are placed on cylinder (42).

2. The intelligent constant precision seeding device for rice seedling tray seedling raising according to claim 1, characterized in that: feed divider is including dividing flitch (26), divide four angles of flitch (26) upside all to be equipped with connecting rod (27), connecting rod (27) all are connected with bin (7), divide flitch (26) center to open there is the through-hole, be equipped with backup pad (28) in the through-hole, backup pad (28) side is equipped with branch (29) of being connected with branch flitch (26), be equipped with the stand on backup pad (28), it is connected with spiral leaf (30) that the slope set up to rotate on the stand, the stand top is equipped with dispenser head (31).

3. The intelligent constant precision seeding device for rice seedling tray seedling raising according to claim 1, characterized in that: the inner side of the through groove (18) is provided with a sliding groove (25), one side of the blocking plate (19) close to the sliding groove (25) is provided with a sliding block, two ends of the sliding groove (25) are respectively provided with a pressure sensor, and the pressure sensors are electrically connected with the water inlet valve and the control panel (24).