Full-spectrum water quality monitor

Abstract

The invention belongs to the technical field of water quality monitoring, and particularly relates to a full-spectrum water quality monitor which comprises an angle grinding frame, a control unit is arranged in a space on one side of the angle grinding frame, and a cleaning unit is arranged in a space on the other side of the angle grinding frame; through unit intermittent extrusion interaction between the table rod and the ball seat, the embedding plate is promoted to synchronously drive the base plate to move towards the axis end of the circular track by a specified distance under the supporting and guiding effects of the mouth grinding frame, and in the process, the rotating direction of the arrow plate in the moving state is limited through the double-ball column; through the relative contact between the double-ball column and different end faces of the wedge plate, the limitation of the double-ball column on the rotation direction of the arrow plate in different time periods is changed, the change of the relative clamping position between the arrow plate and the toothed plate is realized, and reversible repeated pressing reset feedback is formed, so that the vertical distance feeding between the light splitting shovel and the spectrometer lens is linearly and stably adjusted, and the accuracy of the measurement is improved. A traditional one-time rigid contact scraping processing mode is avoided, the relative action degree between the angle shovel and the end face of the spectrograph lens is changed in a pressure dividing mode, impurity particles in suspension liquid under a unit working face area are reduced, then the interaction degree between the impurity particles and the end face of the spectrograph lens and the complex environment are reduced, and the detection accuracy is improved. And the completeness and smoothness of the end face of the spectrometer lens are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water quality monitoring, and specifically relates to a full-spectrum water quality monitor. BACKGROUND

[0002] The full-spectrum water quality monitor is a high-end water quality detection instrument based on spectral analysis technology, which realizes rapid and comprehensive analysis of water quality parameters by measuring the absorption, reflection or scattering characteristics of water bodies to different wavelengths of light, and accurately detects the types and concentrations of various pollutants, nutrients or suspended matters in the water body through a correlation model of spectral data and water quality indicators.

[0003] The attachment and accumulation of particulate matter cause the attenuation of light flux, that is, dust, sand or metal dust is attached to the surface of the lens, gradually forming an opaque or translucent cover layer, directly blocking the incident light or water sample reflection light into the lens; and in a humid environment, the reproduction of microorganisms (algal spores, bacteria) after attachment in the air forms a viscous biofilm, which not only blocks light, but also secretes organic acids to accelerate the corrosion of the lens coating.

[0004] The traditional avoidance method is to add a physical dust cover, which can reduce the attachment of impurities in the external air to the surface of the spectrometer lens to a certain extent, but it increases the length of the light path or introduces an additional reflection surface, causing light loss and stray light interference, and reducing the monitoring accuracy of the spectrometer.

[0005] In addition, the prior art usually uses a disposable full-coverage scraper or cleaning cotton to clean the impurities on the surface of the spectrometer lens. However, the pushing force of the scraper can give the particles in the suspension (especially hard particles with a particle size > 5 μm, such as quartz sand and metal oxides) kinetic energy, and the aforementioned traditional cleaning method has the phenomenon of lengthening the contact path of the scraper with the spectrometer lens, that is, the residence time of the suspension in the contact area of the scraper is lengthened. According to the theory of laminar boundary layer, the suspension in the contact area is prone to form a stable laminar flow, causing the suspended particles to repeatedly impact the same area of the lens surface in the fluid, forming a high-speed impact cycle. At the same time, according to Bernoulli's principle, the flow velocity increases in the narrow area in front of the scraper, and the kinetic energy of the particles increases significantly, which causes micro scratches or pits on the coating surface. SUMMARY

[0006] To solve the above problems, the application adopts the following technical scheme: a full-spectrum water quality monitor, comprising an angle grinder frame, a control unit is arranged on one side of the angle grinder frame, and a cleaning unit is arranged on the other side of the angle grinder frame.

[0007] The cleaning unit comprises:

[0008] A rotating shaft is uniformly arranged on one side of the angle grinder frame.

[0009] A spiral spring is sleeved and installed on the outer wall of the rotating shaft.

[0010] The shaft sleeve is clamped and installed on the outer wall of the rotating shaft, and the coil spring is located inside the shaft sleeve.

[0011] The angle shovel is clamped and installed on the outer wall of the rotating shaft away from the angle grinder frame.

[0012] The water and light groove is arc-shaped in cross-section and uniformly arranged on the outer wall of the angle shovel, and the two side ports of the water and light groove are gradiently changed.

[0013] The water separation plate is clamped and installed on the outer wall of the angle shovel.

[0014] The arc-shaped plate is clamped and installed on the water separation plate away from the shaft sleeve, and the end surface of the arc-shaped plate away from the shaft sleeve is tangent to the end surface of the angle shovel away from the shaft sleeve.

[0015] The water valve is inserted and installed on the end surface of the arc-shaped plate away from the angle shovel.

[0016] The water outlet bin is inserted and installed on the end surface of the arc-shaped plate close to the angle shovel, and the water outlet bin is obliquely arranged.

[0017] Preferably, the angle ring is clamped and installed on the outer wall of the angle grinder frame, and the number is one, the water collecting pipe is clamped and installed on the end surface of the angle ring away from the angle shovel through the buckle, the angle valve is uniformly inserted and installed on the outer wall of the water collecting pipe close to the angle shovel, the total valve is inserted and installed on the middle position of the outer wall of the water collecting pipe away from the angle valve, the arc-shaped plate is arranged in the space on the other side of the angle shovel, and the arc-shaped plate has the same appearance as the angle ring, the air bin is clamped and installed on the end surface of the arc-shaped plate away from the angle shovel, the outlet end of the air bin is obliquely chamfered, the heat conducting plate is clamped and installed on the end surface of the arc-shaped plate away from the angle shovel, the heat conducting plate is clamped and installed on the air bin, the shunt groove is uniformly arranged on the end of the heat conducting plate away from the air bin, the cross section of the shunt groove is funnel-shaped, the end of the shunt groove close to the air bin is obliquely chamfered, and the guide plate is obliquely clamped and installed on the end surface of the angle shovel close to the arc-shaped plate.

[0018] Preferably, the angle ring is clamped and installed on the end surface of the angle grinder frame close to the angle shovel, and the number of the stepped column corresponding to the position and number of the shaft sleeve is one-to-one.

[0019] Preferably, the light machine shell is arranged in the outer space of the angle grinder frame, the spectrometer lens is clamped and installed on one end of the end surface of the light machine shell close to the angle grinder frame, the viewfinder camera is arranged in the space on the other side of the spectrometer lens and clamped and installed on the light machine shell through a ball hinge, the bracket is detachably installed on the outer wall of the light machine shell through bolts, and the fascia plate is clamped and installed between the bracket and the light machine shell.

[0020] Preferably, the control unit comprises:

[0021] The corner joint plate is one in number and is detachably mounted on the optical machine shell through bolts at one end of the end face near the support side;

[0022] The straight rail is clamped and mounted at the end face near the support side of the corner joint plate;

[0023] The boom is inserted and mounted between the corner joint plate and the straight rail;

[0024] The ring rail is clamped and mounted at one end of the straight rail near the spectrometer lens;

[0025] The column is clamped and mounted at one end of the angle grinder frame near the spectrometer lens;

[0026] The T-shaped column is slidingly clamped and mounted at one end of the angle grinder frame away from the column;

[0027] The fence is clamped and mounted at the outer wall of one end of the angle grinder frame away from the spectrometer lens;

[0028] The support rod is symmetrically clamped and mounted at the end face near the column of the fence; in addition, the support rod is slidingly clamped and mounted in cooperation with the T-shaped column;

[0029] The telescopic spring is sleeved and mounted on the outer wall of the support rod, and the telescopic spring is clamped and mounted between the fence and the T-shaped column, respectively.

[0030] Preferably, the angle grinder frame is clamped and mounted with a mouth grinder at one end near the corner joint plate, and the cross-sectional shape of the mouth grinder is L-shaped, a mouth groove is formed at the middle position of the horizontal section of the mouth grinder, a wedge plate is slidingly clamped and mounted in the mouth groove, the cross section of the wedge plate is a right trapezoid, a spring rod slidingly clamped and mounted with the mouth grinder is symmetrically clamped and mounted at one end of the wedge plate near the corner joint plate, a vertical plate is clamped and mounted at one end of the horizontal section of the mouth grinder near the corner joint plate, an angle lever is slidingly clamped and mounted at one end of the vertical plate away from the mouth grinder, an embedded plate slidingly clamped and mounted with the horizontal section of the mouth grinder is clamped and mounted at one end of the angle lever away from the vertical plate, a return spring is sleeved and mounted on the outer wall of the angle lever between the embedded plate and the vertical plate, and an angle column is symmetrically clamped and mounted at one side of the end face of the embedded plate away from the vertical plate.

[0031] Preferably, two said angle column away from the end of the chimeric board together with the card joint fit installed with light shovel, in addition, light shovel with arc surface board between the card joint fit installation, light shovel close to the side wall of the spectrometer lens between the shaft and the spring and bearing sliding card joint fit installation, helical spring with shaft sleeve inner wall and light shovel inner wall respectively card joint fit installation, light shovel inner wall with shaft sleeve between the rotating fit installation, light shovel close to the side end face of angle grinder frame card joint fit installed with base plate, base plate close to the side end face of the spectrometer lens is symmetrical card joint installation with ear seat, ear seat between the rotating fit installed with arrow plate, arrow plate with ear seat between the card joint installed with torsion spring, base plate close to the end of the spectrometer lens is through type sliding card joint fit installed with double ball column, double ball column close to the end of the arrow plate outer wall sliding installation with base plate card joint fit installed gasket, gasket away from the end of the base plate card joint fit installed with double ball outer wall card joint fit installed compression spring, angle grinder frame close to the side end face of light shovel is array type card joint installed with the teeth plate matched with arrow plate.

[0032] Preferably, the straight rail away from the side end face of the light machine shell sliding card joint fit installation of edge mouth frame, edge mouth frame close to the side end face of the angle grinder frame one end card joint fit installed with shaft ball seat, chimeric plate close to the side end face of the edge mouth frame middle position card joint fit installed with the opposite shaft ball seat of the platform rod.

[0033] Preferably, the cross section shape of the light shovel is open circular ring, and the opening degree is at least one fourth, the longitudinal section shape of the light shovel is isosceles trapezoidal, the inclination angle between the water outlet bin and the spectrometer lens is distributed in a gradient along the gravity direction, in addition, the water outlet section at both ends of the water outlet bin is linearly gradient reduced.

[0034] The cleaning method for the impurities adhered to the surface of the spectrometer lens of the full spectrum water quality monitor, uses the full spectrum water quality monitor for cleaning, and the specific steps are as follows:

[0035] S1: first, the straight rail provides stable moving guide support for the angle grinder frame, until the platform column is engaged with the ring rail, then the ring rail pulls the angle grinder frame to make circular motion around the spectrometer lens, in this process, through the intermittent mutual motion between the platform rod and the shaft ball seat, the angle grinder frame is promoted to move a specified distance towards the ring rail axis synchronously under unit rotation state of the angle grinder frame;

[0036] S2: then, through the differential extrusion contact between the different end faces of the double ball column and the wedge plate, the relative contact state between the double ball column and the arrow plate at different time periods is changed, the relative limitation and release of the position of the tooth plate to the angle grinder frame under different moving states of the angle grinder frame is realized, that is, through the flexible adjustment of the one-way rotation of the arrow plate by the double ball column, the engagement relationship between the arrow plate and the tooth plate is limited in a certain state, so that the platform rod can return to the initial position after moving a specified distance towards the ring rail axis during the interaction of the platform rod and the shaft ball seat, and the moving closed loop of the light shovel is improved;

[0037] S3: Finally, by the relative movement between the light splitting shovel and the same angle ring, the relative engagement position between the outer wall of the coaxial sleeve of the ladder section column and the snake groove is changed, at this time, the shaft sleeve synchronously controls the rotation of the rotating shaft, the angle shovel at different positions is rotated under the action of the rotating shaft in the corresponding area, the working angle between the same frequency adjustment and the working surface of the spectrometer lens is adjusted, the gradient feed is realized at the same time (the light splitting shovel controls the overall movement of the angle shovel to the ring rail shaft center), the inclination angle of the working surface of the angle shovel is linearly changed, the traditional scraping shovel overall scraping processing is avoided, the segmented scraping processing is implemented, the residence extension period between the suspension and the angle shovel is shortened, the contact time and degree between the impurity particles and the end surface of the spectrometer lens is reduced, the laminar flow effect of the suspended particles is weakened, the smoothness and integrity of the end surface of the spectrometer lens are improved, and the collection accuracy of the external water quality information of the spectrometer lens is improved.

[0038] The present application has the following beneficial effects:

[0039] 1、The present application promotes the embedded plate to move a specified distance to the ring rail shaft center under the support and guidance of the mouth mill frame by the unit intermittent extrusion interaction between the platform rod and the coaxial ball seat, in the process, the rotating direction of the arrow plate in the moving state is limited by the double ball columns, that is, the relative contact between the double ball columns and the wedge plate at different end surfaces changes the limitation of the double ball columns on the turning direction of the arrow plate at different time periods, the relative engagement position between the arrow plate and the tooth plate is changed, reversible multiple pressing reset feedback is formed, thereby, the vertical distance between the light splitting shovel and the spectrometer lens is linearly and stably adjusted, the traditional one-time rigid contact scraping processing mode is avoided, the relative action degree between the angle shovel and the end surface of the spectrometer lens is changed in a pressure-dividing manner, the impurity particles in the suspension in the unit working surface area are reduced, and then the interaction degree and the complex environment between the impurity particles and the end surface of the spectrometer lens are reduced, the integrity and smoothness of the end surface of the spectrometer lens are improved.

[0040] 2、The present application promotes the ladder section column to synchronously change the relative engagement state between the outer wall of the coaxial sleeve and the snake groove by the light splitting shovel in the unit feeding state, that is, the relative movement between the ladder section column and the snake groove synchronously adjusts the rotation inclination angle of the sleeve, thereby, the angle shovel is continuously linearly adjusted to the working inclination angle between the spectrometer lens surface while synchronously feeding and moving to the spectrometer lens, the cutting force direction is dynamically optimized, the particles are "adsorbed" on the surface of the scraping shovel or guided to the gap by the fluid viscosity, the particle rebound is reduced, the friction damage is reduced, the integrity of the end surface of the spectrometer lens is improved, and at the same time, by the segmented scraping shovel, the stress is concentrated on the edge or local protrusion of the traditional overall scraping shovel during the contact between the single rigid structure and the lens surface in the traditional overall scraping processing process, the stress concentration is caused, the impurity containing and flow guiding capacity are simultaneously improved, and the extrusion damage probability is reduced.

[0041] The whole scheme controls the contact pressure within the safety threshold through the gap between the segments, the cooperation of the inclination dynamic adjustment, avoids the overload caused by single factor, and fully improves the cleaning effect of the corner shovel on the impurity particles in the suspension, reduces the residence time of the impurity particles below the corner shovel, and reduces the probability of rolling. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is the schematic diagram of the overall structure of the application.

[0043] Figure 2 It is the partial structure of the control unit and the cleaning unit in the application. Figure 1 It is the partial structure of the control unit and the cleaning unit in the application.

[0044] Figure 3 It is the partial structure of the control unit and the cleaning unit in the application.

[0045] Figure 4 It is the left view of the structure in the application. Figure 3

[0046] Figure 5 It is the enlarged schematic diagram of the partial structure at A in the application. Figure 4

[0047] It is the three-dimensional structure display diagram of the cleaning unit in the application. Figure 6

[0048] It is the cross-sectional plane display diagram of the corner grinding frame and the partial structure thereon in the application. Figure 7

[0049] It is the three-dimensional display diagram of the partial structure of the cleaning unit in the application. Figure 8

[0050] It is the enlarged schematic diagram of the partial structure at B in the application. Figure 9 Figure 8 It is the cross-sectional display diagram of the structure in the application after omitting part of the structure.

[0051] Figure 10 Figure 8 It is the three-dimensional structure display diagram of the cleaning unit in the application.

[0052] Figure 11 It is the three-dimensional structure display diagram of the cleaning unit in the application.

[0053] Figure 12 It is the display diagram of the corner shovel and the partial structure thereon in the application.

[0054] Marked number in the figure: 1, corner grinding frame; 2, control unit; 3, cleaning unit;

[0055] 11, optical machine shell; 12, spectrometer lens; 13, viewfinder camera; 14, support; 15, fascia plate; ​​​

[0056] 21, corner plate; 22, straight rail; 23, boom; 24, loop rail; 25, column; 26, T face column; 27, fence; 28, support rod; 29, telescopic spring;

[0057] 211, mouth frame; 212, mouth groove; 213, wedge plate; 214, spring rod; 215, vertical plate; 216, corner rod; 217, fitting plate; 218, return spring; 219, corner column;

[0058] 221, light splitting shovel; 222, base plate; 223, ear seat; 224, arrow plate; 225, torsion spring; 226, double ball column; 227, gasket; 228, compression spring; 229, toothed plate;

[0059] 231, edge mouth frame; 232, shaft ball seat; 233, table rod;

[0060] 31, rotating shaft; 32, helical spring; 33, shaft sleeve; 34, corner shovel; 35, water light groove; 36, water separation plate; 37, arc mouth plate; 38, water valve; 39, water outlet bin;

[0061] 311, corner ring; 312, water collecting pipe; 313, corner valve; 314, total valve; 315, cambered surface plate; 316, air bin; 317, heat conduction plate; 318, shunt groove; 319, flow guide plate;

[0062] 321, ladder section column; 322, snake groove. DETAILED DESCRIPTION

[0063] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0064] It should be noted that the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0065] The specific implementation of the present application will be described in detail below with reference to specific embodiments.

[0066] Reference Figure 1 It can be seen that the full-spectrum water quality monitor comprises a corner grinding frame 1, a control unit 2 is arranged on one side of the corner grinding frame 1, and a cleaning unit 3 is arranged on the other side of the corner grinding frame 1.

[0067] Reference Figure 1 、 Figure 3 、 Figure 6 and Figure 7It can be known that the control unit 2 comprises: an angle connecting plate 21, one in number, and detachably mounted on the light machine shell 11 through bolts at one end of the side end face close to the support 14; a straight rail 22, which is clamped and mounted on the angle connecting plate 21 close to the side end face of the support 14; a boom 23, which is inserted and mounted between the angle connecting plate 21 and the straight rail 22; a ring rail 24, which is clamped and mounted on the straight rail 22 close to one end of the spectrometer lens 12; a column 25, which is clamped and mounted on the angle grinder frame 1 close to the spectrometer lens 12; a T-shaped column 26, which is slidingly clamped and mounted on the angle grinder frame 1 away from the column 25; a surrounding plate 27, which is clamped and mounted on the outer wall of the angle grinder frame 1 away from the spectrometer lens 12; a support rod 28, which is symmetrically clamped and mounted on the side end face of the surrounding plate 27 close to the column 25; in addition, the support rod 28 is slidingly clamped and cooperatively mounted between the T-shaped column 26; a telescopic spring 29, which is sleeved and mounted on the outer wall of the support rod 28, and the telescopic spring 29 is clamped and mounted between the surrounding plate 27 and the T-shaped column 26, respectively;

[0068] Referring to Figure 4 , Figure 5 and Figure 7 It can be known that the angle grinder frame 1 is clamped and mounted with a mouth grinder 211 close to the angle connecting plate 21, and the cross-sectional shape of the mouth grinder 211 is L-shaped, a mouth groove 212 is formed in the middle of the horizontal section of the mouth grinder 211, a wedge plate 213 is slidingly clamped and cooperatively mounted in the mouth groove 212, the cross section of the wedge plate 213 is a right trapezoid, a spring rod 214 slidingly clamped and cooperatively mounted with the mouth grinder 211 is symmetrically clamped and mounted on one end of the wedge plate 213 close to the angle connecting plate 21, a vertical plate 215 is clamped and mounted on the outer wall of the horizontal section of the mouth grinder 211 close to the angle connecting plate 21, an angle rod 216 is slidingly clamped and mounted on the vertical plate 215 away from the mouth grinder 211, an embedded plate 217 slidingly clamped and cooperatively mounted with the horizontal section of the mouth grinder 211 is clamped and mounted on the angle rod 216 away from the vertical plate 215, a reset spring 218 sleeved on the outer wall of the angle rod 216 is arranged between the embedded plate 217 and the vertical plate 215, and an angle column 219 is symmetrically clamped and mounted on the side end face of the embedded plate 217 away from the vertical plate 215.

[0069] Referring to Figure 7 , Figure 8 and Figure 9 It can be known that two angle columns 219 are clamped and cooperatively mounted with a light splitting shovel 221 away from the embedded plate 217, in addition, the light splitting shovel 221 is clamped and cooperatively mounted between the arc plate 315, the light splitting shovel 221 is slidingly clamped and cooperatively mounted between the rotating shaft 31 through springs and bearings close to the inner wall of the spectrometer lens 12, the helical spring 32 is clamped and cooperatively mounted with the inner wall of the shaft sleeve 33 and the inner wall of the light splitting shovel 221, respectively, the light splitting shovel 221 is rotatingly cooperatively mounted between the inner wall of the shaft sleeve 33, the base plate 222 is clamped and cooperatively mounted on the side end face of the angle grinder frame 1 close to the light splitting shovel 221, and the ear seat 223 is symmetrically clamped and mounted on the side end face of the base plate 222 close to the angle grinder frame 1.

[0070] The arrow plate 224 is rotationally fitted between the ear seats 223, the torsion spring 225 is clamped and installed between the arrow plate 224 and the ear seat 223, the double spherical column 226 is slidably clamped and installed at the end of the base plate 222 close to the spectrometer lens 12, the gasket 227 is clamped and installed at the end of the double spherical column 226 away from the base plate 222, the compression spring 228 is clamped and installed at the end of the gasket 227 away from the base plate 222, and the tooth plate 229 matched with the arrow plate 224 is arrayed and clamped and installed on the side end surface of the angle grinding frame 1 close to the spectrometer shovel 221.

[0071] Referring to Figure 3 , Figure 4 and Figure 5 , the edge frame 231 is slidably clamped and installed on the side end surface of the straight rail 22 away from the optical machine shell 11, the shaft ball seat 232 is clamped and installed at one end of the side end surface of the edge frame 231 close to the angle grinding frame 1, and the table rod 233 is clamped and installed at the middle position of the side end surface of the edge frame 231 close to the shaft ball seat 232.

[0072] The simple process of the circular motion of the spectrometer shovel 221 with the spectrometer lens 12 as the center is as follows:

[0073] Firstly, the angle grinding frame 1 is driven to move towards the spectrometer lens 12 under the support and guidance of the straight rail 22 (in this process, the connection strength between the hanger 23 and the straight rail 22 is strengthened, the running load of the straight rail 22 is reduced, and the operation stability and precision of the control unit 2 and the cleaning unit 3 are improved), and the mouth grinding frame 211 is synchronously driven to move towards the spectrometer lens 12 until the table column 25 and the ring rail 24 are clamped (at the same time, the T face column 26 is tangent to the outer wall of the ring rail 24 close to the outer wall of the table column 25; thereafter, the relative removal of the T face column 26 and the elastic variable of the extension spring 29 can always apply a reverse force to the T face column 26 to further ensure the clamping and fitting precision and stability between the table column 25 and the ring rail 24, reduce the running stress fatigue of the table column 25, and improve the service life of the table column 25), and in specific implementation, the angle grinding frame 1 can be driven to move by an electric sliding block.

[0074] Then, the ring rail 24 is driven to move in a ring shape by the relative clamping between the table column 25 and the ring rail 24, and in specific implementation, the angle grinding frame 1 can be continuously and stably driven to rotate around the spectrometer lens 12 as the axis by an electric sliding block under the guidance of the ring rail 24.

[0075] Finally, when the angle grinder 1 rotates a specified angle or number of turns, the position of the angle grinder 1 is again pulled by the ring rail 24 until the column 25 is again opposite the straight rail 22 (when the angle grinder 1 moves to one end of the straight rail 22), and the movement track of the angle grinder 1 is again pulled by the straight rail 22. In actual implementation, the angle grinder 1 can be moved by the electric sliding block, and the angle grinder 1 can be moved back and forth to continuously realize the control of the spectroscopic shovel 221 and the stop of the spectroscopic shovel 221;

[0076] It is hereby stated that the vertical distance between the side end face of the angle grinder 1 away from the spectrometer housing 11 and the spectrometer housing 11 is greater than the vertical distance between the side end face of the ring rail 24 away from the spectrometer housing 11 and the spectrometer housing 11. In actual implementation, there is a columnar space allowance between the actual working arc surface of the spectrometer lens 12 and the spectrometer housing 11, and the height of the columnar space allowance is greater than the vertical distance between the angle grinder 1 and the spectrometer housing 11.

[0077] During the single interaction between the shaft ball seat 232 and the column 233, the relative unit distance between the spectroscopic shovel 221 and the angle grinder 1 is temporarily adjusted, and during the last interaction (the last interaction of the specified number of interactions) between the shaft ball seat 232 and the column 233, the spectroscopic shovel 221 returns to the initial position again:

[0078] First, the mouth grinder 211 is controlled to move the embedded plate 217 and the spectroscopic shovel 221 to a specified distance towards the spectrometer lens 12 under the synchronous action of the angle grinder 1 (the connection stiffness between the embedded plate 217 and the spectroscopic shovel 221 is strengthened by the angle column 219 to ensure the stability of the movement of the spectroscopic shovel 221 and the angle grinder 1), until the angle grinder 1 is engaged with the ring rail 24.

[0079] Then, the angle grinder 1 drives the mouth grinder 211 to move along the ring rail 24 under the guidance and support of the ring rail 24. At this time, the shaft ball seat 232 and the column 233 are in single extrusion contact interaction (in this process, the edge mouth frame 231 is controlled by the electric sliding block to drive the shaft ball seat 232 to move a specified distance towards the spectrometer lens 12 (the relative position between the edge mouth frame 231 and the spectrometer lens 12 is adjusted while the angle grinder 1 rotates one turn), to ensure the single contact consistency between the shaft ball seat 232 and the column 233), and the embedded plate 217 controls the angle column 219 to drive the spectroscopic shovel 221 to move towards the spectrometer lens 12 under the action of the column 233 (at this time, the position of the angle grinder 1 relative to the spectroscopic shovel 221 does not change, and the embedded plate 217 is stretched to a specified deformation amount under the double action of the horizontal section support and guidance of the mouth grinder 211 and the auxiliary stable guidance of the angle rod 216 and the vertical plate 215);

[0080] Finally, the substrate 222 under the action of the light splitting shovel 221, control ear seat 223 synchronous belt driven arrow plate 224 in the shaft ball seat 232 in the single extrusion after the platform rod 233, the same different area tooth plate 229 between the relative position changes clamping (specific implementation, the initial state of the double ball column 226 close to the end of the light splitting shovel 221 always with the horizontal end face of the wedge plate 213 extrusion contact, at this time, the double ball column 226 away from the end of the wedge plate 213 stretch out the substrate 222 (through the compression spring 228 to the double ball column 226 provides stable "extrusion after" to the initial state of the recovery of the role of force), and continuously with the arrow plate 224 close to the end of the spectrometer lens 12 side face contact, the current state, in the arrow plate 224 to the spectrometer lens 12 direction moves a unit distance, the arrow plate 224 can be turned to the spectrometer lens 12 direction (through the torsion spring 225 recovery force, to the arrow plate 224 provides the relative force of recovery of the initial position, ensure the arrow plate 224 between the different position tooth plate 229 between the time card engagement relationship), and after the turn, through the engagement between the tooth plate 229 and the arrow plate 224, limit the arrow plate 224 reverse rotation, namely the realization of the arrow plate 224 to the spectrometer lens 12 movement of the one-way card engagement controllable rotation), namely the formation of the shaft ball seat 232 and the single extrusion contact after the platform rod 233, the light splitting shovel 221 relative to the angle grinder 1 to the spectrometer lens 12 direction unit movement a distance, and in the movement after the position relative stability does not change;

[0081] In the last extrusion interaction between the shaft ball seat 232 and the platform rod 233, the double ball column 226 close to the end of the light splitting shovel 221 just contact with the inclined surface of the wedge plate 213, until the double ball column 226 into the mouth groove 212, at this time, the double ball column 226 to the end of the light splitting shovel 221 movement, until no longer with the end face of the arrow plate 224 contact, lose the position of the double ball column 226 limited arrow plate 224, under the action of the reset spring 218, gradually to the initial position movement (the arrow plate 224 can be turned away from the spectrometer lens 12), specific implementation, the elastic coefficient of the reset spring 218 is higher than the elastic coefficient of the spring rod 214, so that the double ball column 226 can be extruded under the action of the reset spring 218, the wedge plate 213 to the spectrometer lens 12 direction movement, until the arrow plate 224 returns to the initial position, the double ball column 226 just again from the inclined surface of the wedge plate 213 to the horizontal plane movement (the double ball column 226 again stretch out the substrate 222 with the end face of the arrow plate 224 contact), until the light splitting shovel 221 moves to the initial position (relative to the angle grinder 1);

[0082] The foregoing scheme is to adjust the interaction between the light splitting shovel 221 and the spectrometer lens 12 as a whole (remove the relative freedom, to a certain extent, to achieve the layered reduction of the impurities on the end face of the spectrometer lens 12, and reduce the detachment rate of impurities in the single reduction process), control the contact pressure within the safety threshold, and avoid overloading caused by a single factor.

[0083] Reference Figure 1 , Figure 8 , Figure 10 and Figure 12 It can be seen that the cleaning unit 3 includes: a rotating shaft 31, evenly arranged in the space on one side of the angle grinder frame 1; a helical spring 32, sleeved and installed on the outer wall of the rotating shaft 31; a bushing 33, snapped onto the outer wall of the rotating shaft 31, with the helical spring 32 located inside the bushing 33; an angle scraper 34, snapped onto the outer wall of the end of the rotating shaft 31 away from the angle grinder frame 1; a water-glow tank 35, with an arc-shaped cross-section, evenly opened on the outer wall on one side of the angle scraper 34, and the two ends of the water-glow tank 35 have a gradient change; and a water-removing... Plate 36 is snap-fitted onto the outer wall of one side of the angle shovel 34; arc-shaped plate 37 is snap-fitted onto the end of the water-removing plate 36 away from the bushing 33; furthermore, the end face of the arc-shaped plate 37 away from the bushing 33 is tangent to the end face of the angle shovel 34 away from the bushing 33; water valve 38 is plugged into the middle position of the end face of the arc-shaped plate 37 away from the angle shovel 34; water outlet 39 is fitted into the end face of the arc-shaped plate 37 near the angle shovel 34; and the water outlet 39 is inclined.

[0084] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 It can be seen that an angle ring 311 is snapped onto one side of the outer wall of the angle grinder 1, and there is only one angle ring 311. A water collection pipe 312 is snapped onto the end face of the angle ring 311 away from the angle shovel 34. Angle valves 313 are evenly inserted into the outer wall of the water collection pipe 312 near the angle shovel 34. A main valve 314 is inserted into the middle position of the outer wall of the water collection pipe 312 away from the angle valves 313. An arc panel 315 is provided on the other side of the angle shovel 34, and the arc panel 315 has the same appearance as the angle ring 311. The end face of the arc panel 315 away from the angle shovel 34 is... The air chamber 316 is installed on the faceplate and the outlet end of the air chamber 316 is designed with an inclined chamfer. The heat conduction plate 317, which is installed in conjunction with the air chamber 316, is installed on the side of the arc panel 315 away from the corner shovel 34. The heat conduction plate 317 has a flow channel 318 evenly opened on the side away from the air chamber 316, and the cross-section of the flow channel 318 is funnel-shaped. At the same time, the end of the flow channel 318 near the air chamber 316 is designed with an inclined chamfer. The guide plate 319 is installed on the side of the corner shovel 34 near the arc panel 315.

[0085] Reference Figure 8 It can be seen that the corner ring 311 is evenly fitted with the trapezoidal column 321 with the position and quantity of the coaxial sleeve 33, and the outer wall of the bushing 33 is provided with a snake groove 322 that is slidably fitted with the trapezoidal column 321.

[0086] Reference Figure 1 and Figure 2It can be known that the outer space of the angle grinder 1 is provided with a light machine shell 11, the light machine shell 11 is clamped and installed at one end of the side end face of the angle grinder 1, a spectrometer lens 12 is arranged at the other side space of the light machine shell 11, the light machine shell 11 is detachably installed on the outer wall of one side through a bolt, a support 14 is clamped and installed between the light machine shell 11, and a fascia plate 15 is clamped and installed between the support 14 and the light machine shell 11.

[0087] The cross-sectional shape of the light splitting shovel 221 is an open annular ring, and the opening degree is at least one fourth. The longitudinal cross-sectional shape of the light splitting shovel 221 is an isosceles trapezoid. The inclination angle between the water outlet chamber 39 and the spectrometer lens 12 is distributed in a gradient along the direction of gravity. In addition, the water outlet cross section at both ends of the water outlet chamber 39 is linearly reduced in gradient.

[0088] When the angle shovel 34 synchronously follows the synchronous feeding of the light splitting shovel 221, the working inclination angle between the spectrometer lens 12 is changed:

[0089] When the light splitting shovel 221 moves towards the spectrometer relative to the angle grinder 1, the corresponding position change between the angle ring 311 and the light splitting shovel 221 occurs. In this process, a certain degree of relative clamping change occurs between the stepped column 321 and the outer wall snake groove 322 of the shaft sleeve 33. At this time, the shaft sleeve 33 controls the rotation of the shaft 31 to drive the angle shovel 34 to rotate by a specified angle (occurring during the movement of the angle shovel 34 to the spectrometer lens 12);

[0090] The angle shovel 34 realizes different degrees of pressure scraping processing on the spectrometer lens 12, avoids the overall scraping processing mode of the traditional angle shovel 34, forms a segmented linear adjustment inclination scraping processing, improves the impurity containing and flow guiding capacity, and reduces the extrusion damage probability (the impurity particles (especially larger particles) after scraping and separation can be trapped in the segmented gap, reducing the secondary crushing and secondary rebound of particles on the lens surface. At this time, the suspended particles carried by the fluid (cleaning liquid) can be quickly discharged through the gap, avoiding the accumulation of particles in front of the scraper, and reducing the "pushing damage" probability);

[0091] The auxiliary cleaning process of the cleaning liquid and other fluids:

[0092] The cleaning liquid stored outside is pumped to the inside of the water collecting pipe 312 through the total valve 314 (in specific implementation, the total valve 314 and the external cleaning liquid storage container can be connected through an external hose, and the total valve 314 is provided with a pumping driving force through an external water pump);

[0093] Afterwards, through the external hose connecting the angle valve 313 and the water valve 38 (both of which are one-way valves), the water valve 38 continuously provides a stable pressure supply to the water outlet chamber 39, prompting the water outlet chamber 39 to spray cleaning liquid to the working surface of the angle shovel 34 and the spectrometer lens 12 in a targeted manner (in specific implementation, the water outlet chamber 39 can be arranged to be inclined, so that the end of the water outlet chamber 39 close to the direction of gravity is relatively far away from the spectrometer lens 12, and the single fluid cross-sectional area of the end of the water outlet chamber 39 close to the direction of gravity is linearly changed to be larger than that of the end far away from the direction of gravity, so as to uniformize the relative consistency of the fluid between the working surface regions during the movement of the angle shovel 34);

[0094] At the same time, the aforementioned fluid between the working surfaces of the angle shovel 34 is shielded from splashing by the water separation plate 36 and the arc-shaped plate 37, and a certain guidance is provided to the suspension between the working surface regions of the angle shovel 34, reducing the secondary contact between the suspension and the end surface of the spectrometer lens 12;

[0095] The water-light groove 35: roughening the end surface of the angle shovel 34 to increase the actual contact area between the end surface of the angle shovel 34 and the working surface, forming a wedge effect, turbulence or stagnation vortex, increasing the resistance between the suspension and the end surface of the angle shovel 34, further reducing the phenomenon of the accumulation of impurity particles in the suspension in the local area of the angle shovel 34 under the influence of gravity, and uniformizing the relative consistency between the impurity particles in the suspension and the end surface of the spectrometer lens 12 during the relative movement of the working surface of the angle shovel 34 during the segmented scraping thereof;

[0096] The air chamber 316 and the heat-conducting plate: through the intermittent distribution between the air chamber 316 and the heat-conducting plate, the flow field space between the air chamber 316 and the spectrometer lens 12 is lengthened to avoid short-distance high-speed flow field, adding extra kinetic energy to the impurity particles on the end surface of the spectrometer lens 12, reducing the secondary rebound damage, and at the same time, the air in the air chamber 316 blowing to the end surface of the spectrometer lens 12 is subjected to detailed shearing treatment through the shunt groove 318 (the purpose of the shunt groove 318 being wide at both ends and narrow in the middle is to further refine the air field blowing from the air chamber 316 to the spectrometer lens 12, and by making a smooth chamfer on the port close to the air chamber 316 end of the shunt groove 318, the rigidity of the chamfer is changed to reduce the change of the flow direction and layout of the air field, affecting the overall drying effect of the air chamber 316), reducing the turbulence phenomenon, and to some extent, realizing the end surface of the spectrometer lens 12 after the damage-free drying and cleaning processing;

[0097] The flow guide plate 319: through the flow guide plate 319 at the back of the angle shovel 34, the suspension after the working of the previous angle shovel 34 is guided to avoid secondary pollution and damage to the spectrometer lens 12;

[0098] It is hereby stated that the segmented scraping process in the cleaning unit 3 is a complementary process to the aforementioned change in the vertical distance between the feed type angle shovel 34 and the spectrometer lens 12, that is, both are to change the equivalent of impurity particles on the working surface area of the single angle shovel 34;

[0099] Simple detection process of full-spectrum water quality monitor:

[0100] The support 14 provides a stable mounting environment for the external connecting components, and the fascia plate 15 strengthens the connection rigidity between the support 14 and the light machine shell 11, ensuring the operation stability and safety of the equipment in different environments. In specific implementation, the spectrometer lens 12 can collect reflected and emitted light of the target area (such as water surface, water body), and transmit it to the internal light splitting module (such as grating, interferometer) of the spectrometer. At the same time, the viewfinder camera 13 assists the operator to quickly align the measurement target (such as a specific area of the water surface), avoiding spectral collection deviation.

[0101] The working principle of the full-spectrum water quality monitor is as follows: first, the straight rail 22 provides stable moving guide support for the angle grinder frame 1 until the column 25 is engaged with the ring rail 24. Then, the ring rail 24 drags the angle grinder frame 1 to make circular motion around the spectrometer lens 12. In this process, through the intermittent mutual motion between the column 233 and the coaxial ball seat 232, the angle grinder frame 1 is urged to move the light splitting shovel 221 by a specified distance towards the axis of the ring rail 24 under unit rotation state;

[0102] Secondly, through the differential extrusion contact between the double ball columns 226 and the wedge plates 213 at different end surfaces, the relative contact state between the double ball columns 226 and the arrow plates 224 at different time periods is changed, realizing the relative limitation and release of the tooth plate 229 to the position of the light splitting shovel 221 under different movement states, that is, through the flexible adjustment of the one-way rotation of the arrow plate 224 by the double ball columns 226, the engagement relationship between the arrow plate 224 and the tooth plate 229 is limited in a certain state, ensuring that the light splitting shovel 221 can return to the initial position after moving a specified distance towards the axis of the ring rail 24 during the interaction between the column 233 and the coaxial ball seat 232, and perfecting the movement closed loop of the light splitting shovel 221.

[0103] Third step: finally, by the relative movement between the spectroscopic shovel 221 and the angle ring 311, the relative engagement position between the ladder section column 321 and the outer wall snake groove 322 of the coaxial sleeve 33 is changed, at this time, the sleeve 33 synchronously controls the rotation of the shaft 31, the angle shovel 34 at different positions is adjusted between the working angles of the working surface of the same frequency and the spectrometer lens 12 under the action of the shaft 31, the working angle of the working surface of the angle shovel 34 is linearly changed, the gradient feed is realized (the spectroscopic shovel 221 controls the overall movement of the angle shovel 34 to the shaft center of the ring rail 24), the inclination angle of the working surface of the angle shovel 34 is linearly changed, the traditional whole type scraping processing is avoided, the segmented scraping processing is implemented, the retention extension period between the suspension and the angle shovel 34 is shortened, the contact time and degree between the impurity particles and the end surface of the spectrometer lens 12 is reduced, the laminar flow effect of the suspended particles is weakened, the smoothness and integrity of the end surface of the spectrometer lens 12 are improved, and the collection accuracy of the external water quality information of the spectrometer lens 12 is improved.

[0104] The circuit and the control involved in the present application are prior art, and will not be described in detail here.

[0105] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A full spectrum water quality monitor comprising an angle grinder frame (1), characterized in that: The control unit (2) is arranged on one side of the angle grinder (1), and the cleaning unit (3) is arranged on the other side of the angle grinder (1); The cleaning unit (3) comprises: A rotating shaft (31) is uniformly arranged on one side of the angle grinder (1); A spiral spring (32) is sleeved and arranged on the outer wall of the rotating shaft (31); A shaft sleeve (33) is clamped and arranged on the outer wall of the rotating shaft (31), and the spiral spring (32) is located in the shaft sleeve (33); An angle shovel (34) is clamped and arranged on the outer wall of the rotating shaft (31) away from the angle grinder (1); A water and light groove (35) is uniformly arranged on the outer wall of the angle shovel (34) in an arc shape, and the two side ports of the water and light groove (35) are gradiently changed; A water separation plate (36) is clamped and arranged on the outer wall of the angle shovel (34); An arc mouth plate (37) is clamped and arranged on the water separation plate (36) away from the shaft sleeve (33); in addition, the side end face of the arc mouth plate (37) away from the shaft sleeve (33) is tangent to the side end face of the angle shovel (34) away from the shaft sleeve (33); A water valve (38) is inserted and arranged on the side end face of the arc mouth plate (37) away from the angle shovel (34) at the middle position; A water outlet bin (39) is inserted and arranged on the side end face of the arc mouth plate (37) close to the angle shovel (34) in a fit mode; and the water outlet bin (39) is arranged in an inclined mode.

2. The full spectrum water quality monitor of claim 1, wherein: An angle ring (311) is clamped and arranged on the outer wall of one side of the angle grinder (1), and the number is one; the side end face of the angle ring (311) away from the angle shovel (34) is clamped and arranged with a water collecting pipe (312) through buckling; the outer wall of the water collecting pipe (312) close to the angle shovel (34) is uniformly inserted and arranged with an angle valve (313); the middle position of the outer wall of the water collecting pipe (312) away from the angle valve (313) is inserted and arranged with a total valve (314); the other side space of the angle shovel (34) is arranged with an arc surface plate (315), and the arc surface plate (315) is the same as the appearance of the angle ring (311); the side end face of the arc surface plate (315) away from the angle shovel (34) is clamped and arranged with a wind bin (316), and the outlet end of the wind bin (316) is designed to be inclined and chamfered; the side end face of the arc surface plate (315) away from the angle shovel (34) is clamped and arranged with a heat conduction plate (317) clamped and arranged with the wind bin (316); the end of the heat conduction plate (317) away from the wind bin (316) is uniformly arranged with a shunt groove (318), and the cross section of the shunt groove (318) is in the shape of a funnel; the end of the shunt groove (318) close to the wind bin (316) is designed to be inclined and chamfered; the side end face of the angle shovel (34) close to the arc surface plate (315) is clamped and arranged with a flow guide plate (319).

3. The full spectrum water quality monitor of claim 2, wherein: The side end face of the angle ring (311) close to the angle shovel (34) is uniformly clamped and arranged with a ladder column (321) corresponding to the position and number of the shaft sleeve (33); the outer wall of the shaft sleeve (33) is arranged with a snake groove (322) slidably clamped and arranged with the ladder column (321).

4. The full spectrum water quality monitor of claim 3, wherein: The outer space of the angle grinder (1) is provided with a light machine shell (11), the light machine shell (11) is connected and installed at one end of the side end face of the angle grinder (1) near, the other side space of the light machine shell (11) is provided with a viewing camera (13) which is connected and installed with the light machine shell (11) through spherical hinge, the side outer wall of the light machine shell (11) is detachably installed with a support (14) through bolts, and the support (14) is connected and installed with a fascia plate (15) between the light machine shell (11).

5. The full spectrum water quality monitor of claim 4, wherein: The control unit (2) comprises: An angle connecting plate (21) is detachably installed on the side end face of the light machine shell (11) near the support (14) through bolts; A straight rail (22) is connected and installed on the side end face of the angle connecting plate (21) near the support (14); A boom (23) is connected and installed between the angle connecting plate (21) and the straight rail (22); A ring rail (24) is connected and installed at one end of the straight rail (22) near the spectrometer lens (12); A column (25) is connected and installed at one end of the angle grinder (1) near the spectrometer lens (12); A T-shaped column (26) is slidingly connected and installed at one end of the angle grinder (1) away from the column (25); A coaming (27) is connected and installed at the outer wall of one end of the angle grinder (1) away from the spectrometer lens (12); A support rod (28) is symmetrically connected and installed on the side end face of the coaming (27) near the column (25), and the support rod (28) is slidingly connected and installed between the coaming (27) and the T-shaped column (26); A telescopic spring (29) is sleeved and installed on the outer wall of the support rod (28), and the telescopic spring (29) is connected and installed between the coaming (27) and the T-shaped column (26).

6. The full spectrum water quality monitor of claim 1, wherein: The angle grinder (1) is connected and installed at one end of the angle connecting plate (21) near the mouth grinder (211), and the cross section of the mouth grinder (211) is L-shaped, a mouth groove (212) is formed in the middle of the horizontal section of the mouth grinder (211), a wedge plate (213) is slidingly connected and installed in the mouth groove (212), the cross section of the wedge plate (213) is a right trapezoid, a spring rod (214) is symmetrically connected and installed at one end of the wedge plate (213) near the angle connecting plate (21), the spring rod (214) is slidingly connected and installed with the mouth grinder (211), a vertical plate (215) is connected and installed on the outer wall of one end of the horizontal section of the mouth grinder (211) near the angle connecting plate (21), an angle rod (216) is slidingly connected and installed at one end of the vertical plate (215) away from the mouth grinder (211), an embedded plate (217) is connected and installed at one end of the angle rod (216) away from the vertical plate (215), the embedded plate (217) is slidingly connected and installed with the horizontal section of the mouth grinder (211), a reset spring (218) is sleeved on the outer wall of the angle rod (216) between the embedded plate (217) and the vertical plate (215), and an angle column (219) is symmetrically connected and installed on the side end face of the embedded plate (217) away from the vertical plate (215).

7. The full spectrum water quality monitor of claim 3, wherein: Two said angle column (219) away from the chimeric board (217) one end of the common card joint fit installed with light shovel (221), in addition, light shovel (221) and arc surface board (315) between the card joint fit installation, light shovel (221) near the spectrometer lens (12) one side wall and the rotating shaft (31) between the spring and bearing sliding joint fit installation, coil spring (32) and shaft sleeve (33) inner wall and light shovel (221) inner wall are respectively joint fit installation, light shovel (221) inner wall and shaft sleeve (33) between the rotating fit installation, light shovel (221) near the angle grinder frame (1) one side end surface joint fit installation has base plate (222), base plate (222) near the angle grinder frame (1) one side end surface is symmetrically jointed and installed ear seat (223), ear seat (223) between the rotating fit installation has arrow plate (224), arrow plate (224) and ear seat (223) between the joint installation has torsion spring (225), base plate (222) near the spectrometer lens (12) one end is through type sliding joint fit installation has double ball column (226), double ball column (226) near the arrow plate (224) one end wall sliding installation has with base plate (222) joint fit installation gasket (227), gasket (227) away from the base plate (222) one end joint installation has with double ball column (226) outer wall joint fit installation compression spring (228), angle grinder frame (1) near the light shovel (221) one side end surface is array type joint installation has with arrow plate (224) cooperation toothed plate (229).

8. The full spectrum water quality monitor of claim 7, wherein: The straight rail (22) away from the light machine shell (11) one side end surface sliding joint fit installation of edge mouth frame (231), edge mouth frame (231) near the angle grinder frame (1) one side end surface one end joint installation has shaft ball seat (232), chimeric board (217) near the edge mouth frame (231) one side end surface middle position joint installation has with shaft ball seat (232) opposite table rod (233).

9. The full spectrum water quality monitor of claim 7, wherein: The cross section shape of the light shovel (221) is an open circular ring, and the opening degree is at least one fourth. The longitudinal cross section shape of the light shovel (221) is an isosceles trapezoid. The inclination angle between the water outlet bin (39) and the spectrometer lens (12) increases in the direction of gravity in a gradient manner. In addition, the water outlet cross sections at both ends of the water outlet bin (39) decrease linearly.

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