Self-cleaning MVR evaporator

Abstract

The invention discloses a self-cleaning MVR (mechanical vapor recompression) evaporator which comprises a heat exchange shell, mounting discs which are spaced up and down are arranged in the heat exchange shell, and a plurality of heat exchange pipes which are distributed in the circumferential direction are connected between the two mounting discs; an upper cleaning assembly is arranged at the upper end of the heat exchange tube; a lower cleaning assembly is arranged at the lower end; the upper cleaning assembly comprises a first upper brush wheel, an upper driving rod, a valve body and a second upper brush wheel; the valve body penetrates through the first upper brush wheel in a sliding manner; an energy storage elastic piece is arranged between the valve body and the upper driving rod; the lower cleaning assembly comprises a first lower brush wheel, a lower driving rod, a reset spring and a second lower brush wheel. The reset spring is arranged between the first lower brush wheel and the second lower brush wheel; and therefore, scaling of the heat exchange tube is effectively delayed, the cleaning frequency of the evaporator is reduced, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange equipment, and in particular to a self-cleaning MVR evaporator. Background Art

[0002] Battery technology is crucial in the field of electric vehicles. Evaporators are needed in the production process of lithium compounds, one of the main raw materials needed for lithium batteries. MVR (mechanical vapor recompression, MVR) evaporator is a commonly used evaporator in the production of lithium compounds.

[0003] However, when the MVR evaporator is working, the mother liquid flows through the heat exchange tubes, which causes calcium and magnesium scaling to form on the inner wall of the heat exchange tubes and cause blockage. Therefore, the MVR evaporator needs to be cleaned frequently and regularly, which affects production efficiency and indirectly increases production costs. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned disadvantages and provide a self-cleaning MVR evaporator, thereby effectively delaying the scaling of the heat exchange tubes, reducing the cleaning frequency of the evaporator, and helping to reduce production costs and improve production efficiency.

[0005] To achieve the above object, the specific scheme of the present invention is as follows: a self-cleaning MVR evaporator, comprising a heat exchange shell, wherein an upper and lower spaced mounting plate is provided in the heat exchange shell, and a plurality of heat exchange tubes distributed along the circumferential direction are connected between the two mounting plates; an upper cleaning assembly is provided at the upper end of the heat exchange tube, and a lower cleaning assembly is provided at the lower end;

[0006] The upper cleaning assembly comprises a first upper brush wheel, an upper driving rod, a valve body and a second upper brush wheel; the valve body is slidably arranged on the first upper brush wheel; an energy storage elastic member is arranged between the valve body and the upper driving rod;

[0007] The lower cleaning assembly comprises a first lower brush wheel, a lower driving rod, a return spring and a second lower brush wheel; the return spring is arranged between the first lower brush wheel and the second lower brush wheel.

[0008] Optionally, the first upper brush wheel and the first lower brush wheel are unidirectionally rotatable on the corresponding mounting plates respectively; the upper driving rod and the lower driving rod are slidably penetrated through the first upper brush wheel and the first lower brush wheel respectively; the second upper brush wheel and the second lower brush wheel are respectively profile-mounted on the upper driving rod and the lower driving rod; the second upper brush wheel and the second lower brush wheel are both provided with a first bayonet;

[0009] The inner wall of the heat exchange tube is provided with a first driving groove corresponding to the second upper brush wheel and the second lower brush wheel respectively; the first bayonet is movably embedded in the first driving groove; the first upper brush wheel and the first lower brush wheel are both provided with a second bayonet; the upper driving rod and the lower driving rod are both provided with a second driving groove.

[0010] Optionally, a first limit platform is provided at the lower end of the upper driving rod, and a second limit platform is provided at the upper end; a third limit platform is further provided between the first limit platform and the second limit platform;

[0011] A fourth position limiting platform is arranged at the lower end of the lower driving rod; a fifth position limiting platform is arranged at a position between the first lower brush wheel and the second lower brush wheel of the lower driving rod.

[0012] Optionally, the first upper brush wheel is provided with a locking groove, and an arc-shaped boss is provided at the lower end of the locking groove; a locking pin is elastically provided on the outer side wall of the valve body; and the locking pin is movably embedded in the locking groove.

[0013] Optionally, the first driving groove includes a first linear groove and a first spiral groove; the upper end of the first linear groove is connected to the upper end of the first spiral groove, and the lower end of the first linear groove is connected to the lower end of the first spiral groove.

[0014] Optionally, the second driving groove is a second spiral groove.

[0015] Optionally, the energy storage elastic member is a coil spring, one end of the coil spring is fixedly connected to the valve body, the other end of the coil spring is fixedly connected to a slider, the upper end of the upper drive rod is provided with a second linear groove, and the slider is slidably embedded in the second linear groove.

[0016] Optionally, one-way locking blocks are elastically provided on both mounting plates, and one-way ratchet grooves are provided on the first upper brush wheel and the first lower brush wheel; the one-way locking blocks are unidirectionally meshed with the corresponding one-way ratchet grooves.

[0017] Optionally, a cleaning blade is elastically provided on the side wall of the first latch.

[0018] Optionally, a groove is provided on the end surface of the first bayonet, and the groove runs through the first bayonet.

[0019] The beneficial effects of the present invention are as follows: during the heat exchange process, the present invention is driven by the mother liquid to use the second upper brush wheel and the second lower brush wheel to clean the inner wall of the heat exchange tube, and use the first upper brush wheel and the first lower brush wheel to clean the two ends of the heat exchange tube, thereby effectively delaying the scaling of the heat exchange tube, reducing the cleaning frequency of the evaporator, and helping to reduce production costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0021] Figure 2 It is a cross-sectional schematic diagram of the present invention when the valve body closes the heat exchange tube;

[0022] Figure 3 It is a schematic diagram of the structure of the heat exchange tube, the upper cleaning assembly and the lower cleaning assembly of the present invention;

[0023] Figure 4It is a cross-sectional schematic diagram of the cooperation of the heat exchange tube, the upper cleaning assembly and the lower cleaning assembly of the present invention;

[0024] Figure 5 yes Figure 4 A local enlarged schematic diagram of the middle A;

[0025] Figure 6 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0026] Figure 7 It is a cross-sectional schematic diagram of the heat exchange tube, the upper cleaning assembly and the lower cleaning assembly of the present invention when the valve body closes the heat exchange tube;

[0027] Figure 8 yes Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0028] Fig. 9 yes Figure 7 A partial enlarged schematic diagram of point D in the middle;

[0029] Fig.10 It is a cross-sectional schematic diagram of the heat exchange tube, the upper cleaning assembly, and the lower cleaning assembly of the present invention when the third limit station is used to unlock the valve body;

[0030] Fig.11 yes Fig.10 A partial enlarged schematic diagram of point E in the middle;

[0031] Fig.12 is a cross-sectional schematic diagram of a heat exchange tube of the present invention;

[0032] Fig.13 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0033] Fig.14 is a cross-sectional schematic diagram of the first upper brush wheel of the present invention;

[0034] Fig.15 It is a cross-sectional schematic diagram of the valve body and coil spring of the present invention;

[0035] Fig.16 It is a schematic structural diagram of the second upper brush wheel or the second lower brush wheel of the present invention;

[0036] Fig.17 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0037] Fig.18 is a cross-sectional schematic diagram of the first lower brush wheel of the present invention;

[0038] Fig.19 It is a partial structural schematic diagram of the installation disk of the present invention;

[0039] Description of reference numerals: 1, heat exchange shell; 11, upper shell; 12, lower shell; 13, liquid inlet; 14, liquid outlet; 15, air inlet; 16, gas-liquid outlet; 2, mounting plate; 21, one-way locking block; 3, heat exchange tube; 31, first linear groove; 32, first spiral groove; 41, first upper brush wheel; 411, locking groove; 412, arc boss; 42, upper driving rod; 421, first limit platform; 422, second limit platform; 42 3. Third limit platform; 424. Second linear groove; 43. Valve body; 431. Locking pin; 44. Second upper brush wheel; 45. Coil spring; 451. Sliding block; 51. First lower brush wheel; 52. Lower driving rod; 521. Fourth limit platform; 522. Fifth limit platform; 53. Return spring; 54. Second lower brush wheel; 6. First latch; 61. Cleaning blade; 62. Groove; 7. Second latch; 8. Second spiral groove; 9. One-way ratchet groove. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0041] like Figures 1 to 19 As shown, a self-cleaning MVR evaporator described in this embodiment is used to solve the problem of scaling and clogging of MVR evaporators in the field of lithium-ion new energy. The self-cleaning MVR evaporator includes a heat exchange shell 1; the heat exchange shell 1 has an upper shell 11 and a lower shell 12; the upper shell 11 is fixedly mounted on the top of the lower shell 12, and the upper shell 11 is provided with a liquid inlet 13; the bottom of the lower shell 12 is provided with a liquid outlet 14; the upper end of the side wall of the lower shell 12 is provided with an air inlet 15; the lower end of the side wall of the lower shell 12 is provided with a gas-liquid outlet 16;

[0042] The heat exchange shell 1 is provided with a mounting plate 2 spaced up and down, and a liquid inlet cavity is formed between the mounting plate 2 located at the top and the upper shell 11; a liquid outlet cavity is formed between the mounting plate 2 located at the bottom and the lower shell 12; the upper shell 11, the lower shell 12 and the two mounting plates 2 are collectively surrounded to form a heat exchange cavity;

[0043] A plurality of heat exchange tubes 3 distributed along the circumferential direction are connected between the two mounting plates 2 ; an upper cleaning assembly is provided at the upper end of the heat exchange tube 3 , and a lower cleaning assembly is provided at the lower end of the heat exchange tube 3 .

[0044] In this embodiment, by providing a lower cleaning assembly and an upper cleaning assembly, the inner wall of the heat exchange tube 3 is simultaneously descaled and cleaned when the evaporator is working, thereby effectively reducing the cleaning frequency of the evaporator.

[0045] In this embodiment, Figures 1 to 18As shown, the upper cleaning assembly includes a first upper brush wheel 41, an upper driving rod 42, a valve body 43 and a second upper brush wheel 44; the valve body 43 is slidably inserted into the first upper brush wheel 41; an energy storage elastic member is provided between the valve body 43 and the upper driving rod 42; the lower cleaning assembly includes a first lower brush wheel 51, a lower driving rod 52, a return spring 53 and a second lower brush wheel 54; the return spring 53 is provided between the first lower brush wheel 51 and the second lower brush wheel 54.

[0046] Specifically, the first upper brush wheel 41 and the first lower brush wheel 51 are respectively unidirectionally rotatable and arranged on the corresponding mounting plate 2; the upper driving rod 42 and the lower driving rod 52 are respectively slidably penetrated through the first upper brush wheel 41 and the first lower brush wheel 51; the second upper brush wheel 44 and the second lower brush wheel 54 are respectively profile-mounted on the upper driving rod 42 and the lower driving rod 52; the second upper brush wheel 44 and the second lower brush wheel 54 are both provided with a first bayonet 6; the inner wall of the heat exchange tube 3 is respectively provided with a first driving groove corresponding to the second upper brush wheel 44 and the second lower brush wheel 54; the first bayonet 6 is movably embedded in the first driving groove; the first upper brush wheel 41 and the first lower brush wheel 51 are both provided with a second bayonet 7; the upper driving rod 42 and the lower driving rod 52 are both provided with a second driving groove. Furthermore, the lower end of the upper driving rod 42 is provided with a first limiting platform 421, and the upper end is provided with a second limiting platform 422; the upper driving rod 42 is further provided with a third limiting platform 423 between the first limiting platform 421 and the second limiting platform 422; the lower end of the lower driving rod 52 is provided with a fourth limiting platform 521; the lower driving rod 52 is provided with a fifth limiting platform 522 at a position between the first lower brush wheel 51 and the second lower brush wheel 54. In this embodiment, the second upper brush wheel 44 and the second lower brush wheel 54 may have the same structure.

[0047] In actual use, the mother liquid enters the liquid inlet cavity through the liquid inlet 13, and then enters each heat exchange tube 3. The high-temperature gas is transported to the heat exchange cavity from the gas inlet 15. The mother liquid and the high-temperature gas exchange heat in the heat exchange cavity, thereby generating condensate in the heat exchange cavity. The condensate can flow out through the gas-liquid discharge port 16, and the mother liquid after absorbing heat enters the liquid outlet cavity and is then discharged from the liquid outlet 14.

[0048] After the mother liquid flows into the heat exchange tube 3, the mother liquid pushes the second upper brush wheel 44 to move downward. Figure 4 and Figure 5 As shown, when the second upper brush wheel 44 abuts against the first limit platform 421, the second upper brush wheel 44 drives the upper driving rod 42 to move downward. During the downward movement of the upper driving rod 42, the upper driving rod 42 cooperates with the second bayonet 7 through the second driving groove to drive the first upper brush wheel 41 to rotate. The first upper brush wheel 41 drives the valve body 43 to rotate relative to the upper driving rod 42, so that the energy storage elastic member stores energy until the second limit platform 422 abuts against the valve body 43, and the upper driving rod 42 pushes the valve body 43 downward through the second limit platform 422.

[0049] At the same time, the mother liquid entering the heat exchange tube 3 pushes the second lower brush wheel 54 to move downward, and the reset spring 53 produces elastic deformation. When the second lower brush wheel 54 contacts the fifth limit platform 522, the second lower brush wheel 54 pushes the lower driving rod 52 to move downward, and the lower driving rod 52 cooperates with the second bayonet 7 and the second driving groove to drive the first lower brush wheel 51 to rotate;

[0050] Until the valve body 43 closes the heat exchange tube 3, Figure 7 and Figure 8 As shown, at this time, the energy storage elastic member releases the stored energy. Since the first upper brush wheel 41 can only rotate in one direction, the energy storage elastic member drives the upper driving rod 42 to rotate and move upward in cooperation with the second driving groove and the second bayonet 7. The upper driving rod 42 drives the second upper brush wheel 44 to move upward through the first limiting platform 421. In cooperation with the second driving groove and the first bayonet 6, the second upper brush wheel 44 rotates and moves upward relative to the heat exchange tube 3; until the third limiting platform 423 contacts the valve body 43, as shown in FIG. Fig.10 and Fig.11 As shown, the upper driving rod 42 pushes the valve body 43 upward, thereby opening the heat exchange tube 3, and the second upper brush wheel 44 is reset to the top dead center position;

[0051] Similarly, after the valve body 43 closes the heat exchange tube 3, the reset spring 53 pushes the second lower brush wheel 54 to reset, and the second lower brush wheel 54 rotates and moves upward in cooperation with the first driving groove and the first bayonet 6, and the second lower brush wheel 54 drives the lower driving rod 52 to rotate. Since the first lower brush wheel 51 cannot rotate in the opposite direction, the lower driving rod 52 moves upward synchronously in cooperation with the second driving groove and the second bayonet 7 until the reset spring 53 is completely reset;

[0052] At this time, the mother liquid enters the heat exchange tube 3 again, thereby pushing the second upper brush wheel 44 to move downward again, and then repeating the above process; in this way, during the heat exchange process, driven by the mother liquid, the second upper brush wheel 44 and the second lower brush wheel 54 are used to clean the inner wall of the heat exchange tube 3, and the first upper brush wheel 41 and the first lower brush wheel 51 are used to clean the two ends of the heat exchange tube 3, thereby effectively delaying the scaling of the heat exchange tube 3, reducing the cleaning frequency of the evaporator, and helping to reduce production costs and improve production efficiency.

[0053] like Fig.11 , Fig.14 and Fig.15As shown, in the self-cleaning MVR evaporator of this embodiment, in some embodiments, the first upper brush wheel 41 is provided with a locking groove 411, and the lower end of the locking groove 411 is provided with an arc-shaped boss 412; the outer wall of the valve body 43 is elastically provided with a locking pin 431; the locking pin 431 is movably embedded in the locking groove 411. Specifically, initially, the locking pin 431 is located at the upper end of the locking groove 411, and when the second limit platform 422 contacts the top surface of the valve body 43, the upper driving rod 42 pushes the valve body 43 downward to slide, and the locking pin 431 moves downward along the locking groove 411 until the locking pin 431 passes over the arc-shaped boss 412. At this time, the locking pin 431 cooperates with the arc-shaped boss 412 to lock the valve body 43, so that the valve body 43 remains in a state of closing the heat exchange tube 3;

[0054] When the third limit platform 423 contacts the bottom surface of the valve body 43, the upper driving rod 42 pushes the valve body 43 to move upward, thereby unlocking the valve body 43. At this time, the locking pin 431 passes over the arc-shaped boss 412 and returns to the upper end of the locking groove 411 again, thereby opening the heat exchange tube 3.

[0055] The self-cleaning MVR evaporator of this embodiment, in some embodiments, such as Fig.12 As shown, the first driving groove includes a first straight groove 31 and a first spiral groove 32; the upper end of the first straight groove 31 is connected to the upper end of the first spiral groove 32, and the lower end of the first straight groove 31 is connected to the lower end of the first spiral groove 32. Specifically, when the mother liquid enters the heat exchange tube 3, the mother liquid pushes the second upper brush wheel 44 to move downward, and the first bayonet 6 moves along the first straight groove 31 until the second upper brush wheel 44 moves down to the lower dead point position, at which time the first bayonet 6 enters the first spiral groove 32; when the energy storage elastic member releases the stored energy, the upper driving rod 42 rotates and moves upward, and the upper driving rod 42 drives the second upper brush wheel 44 to rotate and move upward synchronously, at which time the first bayonet 6 moves along the trajectory of the first spiral groove 32, and when the third limit platform contacts the bottom surface of the valve body 43, the upper driving rod 42 pushes the valve body 43 to move upward, and the valve body 43 is unlocked.

[0056] The self-cleaning MVR evaporator of this embodiment, in some embodiments, such as Fig.13 and Fig.17 As shown, the second driving groove is the second spiral groove 8. Specifically, when the upper driving rod 42 moves downward, the second bayonet 7 moves relatively along the track of the second spiral groove 8, thereby driving the first upper brush wheel 41 to rotate forward to clean the upper end of the heat exchange tube 3; similarly, when the lower driving rod 52 moves downward, the second bayonet 7 moves relatively along the track of the second spiral groove 8, thereby driving the first lower brush wheel 51 to rotate forward to clean the lower end of the heat exchange tube 3;

[0057] When the energy storage elastic member releases the stored energy and the reset spring 53 restores the elastic deformation, due to the unidirectional rotation of the first upper brush wheel 41 and the first lower brush wheel 51, the upper driving rod 42 and the lower driving rod 52 respectively rotate upward under the cooperation of the second pin 7 and the second spiral groove 8, thereby realizing the reset of the second upper brush wheel 44 and the second lower brush wheel 54, so that the second upper brush wheel 44 and the second lower brush wheel 54 circulate to descale and clean the inner wall of the heat exchange tube 3.

[0058] like Fig.13 and Fig.15 As shown, in the self-cleaning MVR evaporator of this embodiment, in some embodiments, the energy storage elastic member is a coil spring 45, one end of the coil spring 45 is fixedly connected to the valve body 43, and the other end of the coil spring 45 is fixedly connected to a slider 451, and the upper end of the upper drive rod 42 is provided with a second linear groove 424, and the slider 451 is slidably embedded in the second linear groove 424. Specifically, when the second upper brush wheel 44 moves downward, due to the action of the first linear groove 31 and the first bayonet 6, the rotational freedom of the second upper brush wheel 44 is limited, that is, the rotational freedom of the upper drive rod 42 is limited, and the second upper brush wheel 44 can only move downward by driving the upper drive rod 42 through the first limit platform 421, and the slider 451 moves relative to the upper drive rod 42 along the second linear groove 424, and the upper drive rod 42 cooperates with the second spiral groove 8 and the second bayonet 7 to drive the first upper brush wheel 41 to rotate, and the first upper brush wheel 41 drives the valve body 43 to rotate relative to the upper drive rod 42, and at this time, the coil spring 45 is wound up to store energy until the valve body 43 closes the heat exchange tube 3;

[0059] When the coil spring 45 releases the stored energy, since the first upper brush wheel 41 can only rotate in one direction, the coil spring 45 cooperates with the slider 451 and the second linear groove 424 to drive the upper drive rod 42 to rotate. At the same time, with the cooperation of the second spiral groove 8 and the second pin 7, the upper drive rod 42 moves upward synchronously during the rotation process until the coil spring 45 completely releases the stored energy.

[0060] like Figure 1 , Figure 2 , Fig.14 , Fig.18 and Fig.19 As shown, in the self-cleaning MVR evaporator of this embodiment, in some embodiments, one-way locking blocks 21 are elastically provided on both mounting plates 2, and one-way ratchet grooves 9 are provided on the first upper brush wheel 41 and the first lower brush wheel 51; the one-way locking blocks 21 are unidirectionally meshed with the corresponding one-way ratchet grooves 9. Specifically, in this embodiment, the one-way locking blocks 21 are provided to cooperate with the one-way ratchet grooves 9, so as to unidirectionally lock the first upper brush wheel 41 and the first lower brush wheel 51, so that the first upper brush wheel 41 and the first lower brush wheel 51 can only rotate in one direction, and the structural stability is higher.

[0061] like Fig.16As shown, in the self-cleaning MVR evaporator of this embodiment, in some embodiments, a cleaning blade 61 is elastically provided on the side wall of the first bayonet 6. In this embodiment, by providing the cleaning blade 61, when the first bayonet 6 moves along the first driving groove, the cleaning blade 61 can clean the groove wall of the first driving groove to ensure smooth cooperation between the first bayonet 6 and the first driving groove.

[0062] like Fig.16 As shown, in the self-cleaning MVR evaporator of this embodiment, in some embodiments, a groove 62 is provided on the end surface of the first bayonet 6, and the groove 62 runs through the first bayonet 6. In this embodiment, the groove 62 is provided so that the mother liquid flows into the first driving groove through the groove 62 to wash the scraped dirt.

[0063] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A self-cleaning MVR evaporator, characterized in that: It comprises a heat exchange shell, in which an upper and lower spaced mounting plate is arranged, and a plurality of heat exchange tubes distributed along the circumferential direction are connected between the two mounting plates; an upper cleaning assembly is arranged at the upper end of the heat exchange tube, and a lower cleaning assembly is arranged at the lower end; The upper cleaning assembly comprises a first upper brush wheel, an upper driving rod, a valve body and a second upper brush wheel; the valve body is slidably arranged on the first upper brush wheel; an energy storage elastic member is arranged between the valve body and the upper driving rod; The lower cleaning assembly comprises a first lower brush wheel, a lower driving rod, a return spring and a second lower brush wheel; the return spring is arranged between the first lower brush wheel and the second lower brush wheel.

2. A self-cleaning MVR evaporator according to claim 1, characterized in that: The first upper brush wheel and the first lower brush wheel are respectively unidirectionally rotatable and arranged on the corresponding mounting plates; the upper driving rod and the lower driving rod are respectively slidably penetrated through the first upper brush wheel and the first lower brush wheel; the second upper brush wheel and the second lower brush wheel are respectively profile-mounted on the upper driving rod and the lower driving rod; the second upper brush wheel and the second lower brush wheel are both provided with a first bayonet; The inner wall of the heat exchange tube is provided with a first driving groove corresponding to the second upper brush wheel and the second lower brush wheel respectively; the first bayonet is movably embedded in the first driving groove; the first upper brush wheel and the first lower brush wheel are both provided with a second bayonet; the upper driving rod and the lower driving rod are both provided with a second driving groove.

3. A self-cleaning MVR evaporator according to claim 2, characterized in that: The lower end of the upper driving rod is provided with a first limit platform, and the upper end is provided with a second limit platform; the upper driving rod is also provided with a third limit platform between the first limit platform and the second limit platform; A fourth position limiting platform is arranged at the lower end of the lower driving rod; a fifth position limiting platform is arranged at a position between the first lower brush wheel and the second lower brush wheel of the lower driving rod.

4. A self-cleaning MVR evaporator according to claim 3, characterized in that: The first upper brush wheel is provided with a locking groove, and an arc-shaped boss is provided at the lower end of the locking groove; a locking pin is elastically provided on the outer side wall of the valve body; and the locking pin is movably embedded in the locking groove.

5. The self-cleaning MVR evaporator according to claim 2, characterized in that: The first driving groove includes a first linear groove and a first spiral groove; the upper end of the first linear groove is connected to the upper end of the first spiral groove, and the lower end of the first linear groove is connected to the lower end of the first spiral groove.

6. A self-cleaning MVR evaporator according to claim 2, characterized in that: The second driving groove is a second spiral groove.

7. The self-cleaning MVR evaporator according to claim 2, characterized in that: The energy storage elastic member is a coil spring, one end of which is fixedly connected to the valve body, and the other end of which is fixedly connected to a slider. A second linear groove is provided at the upper end of the upper driving rod, and the slider is slidably embedded in the second linear groove.

8. The self-cleaning MVR evaporator according to claim 2, characterized in that: One-way locking blocks are elastically arranged on the two mounting plates, and one-way ratchet grooves are arranged on the first upper brush wheel and the first lower brush wheel; the one-way locking blocks are unidirectionally meshed with the corresponding one-way ratchet grooves.

9. The self-cleaning MVR evaporator according to claim 2, characterized in that: A cleaning blade is elastically provided on the side wall of the first latch.

10. The self-cleaning MVR evaporator according to claim 2, characterized in that: A groove is arranged on the end surface of the first bayonet, and the groove runs through the first bayonet.

Images