Water source heat pump pretreatment device for sewage plant

Abstract

The invention relates to the technical field of water source heat pumps, in particular to a water source heat pump pretreatment device for a sewage plant, which comprises a sewage guide cylinder, a filter screen, a garbage self-cleaning mechanism, a linkage mechanism and a limiting frame, the sewage guide cylinder for guiding sewage is of an L-shaped structure, and the filter screen is fixed in a vertical cavity of the sewage guide cylinder; and the garbage self-cleaning mechanism is arranged at the turning point of the sewage guide cylinder. According to the water source heat pump pretreatment device, two core defects of the water source heat pump pretreatment device are effectively overcome, firstly, the linkage mechanism driven by water flow impact drives the garbage self-cleaning mechanism to realize online cleaning of the filter screen, so that the filtering efficiency can be always maintained in an initial state; compared with the traditional fixed filter screen, the efficiency attenuation caused by impurity accumulation has obvious advantages; secondly, the requirement of manual shutdown for cleaning is avoided through the dynamic cleaning mechanism; meanwhile, compared with an electric backwashing scheme, the self-cleaning system completely depending on hydraulic driving is more energy-saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water source heat pumps, in particular to a water source heat pump pretreatment device for sewage plants. BACKGROUND

[0002] The sewage source heat pump is a means for realizing water temperature raising and air conditioning system use by using raw sewage as a heat source and through heat exchange. The technology has great advantages when applied to sewage plants due to the large water flow and convenient water taking of sewage plants.

[0003] At present, the sewage treated by the water plant through the first stage is the regenerated water source, which is directly delivered to the water source heat pump. Some impurities in the regenerated water source will be input into other equipment of the water source heat pump, thereby easily causing damage to the water source heat pump unit and increasing the maintenance cost in the later period. Therefore, a pretreatment device can be arranged in front of the water source heat pump to filter the regenerated water source treated by the first stage again, so as to realize the effect of removing impurities.

[0004] In the related art, most of the pretreatment devices currently use fixed filter screens. After a long time of operation, the fixed filter screen structure forms a dense accumulation layer of solid impurities, which causes the filtration efficiency to decrease. In addition, after the filter screen is blocked, most devices need to use manual cleaning to clean the filter screen. The cleaning needs to be performed during shutdown, which seriously affects the continuous processing capacity. These problems directly lead to a significant reduction in the sewage treatment efficiency and restrict the sewage treatment rhythm. SUMMARY

[0005] In order to solve the problems of the current filter device, such as the need for manual cleaning and shutdown cleaning after garbage accumulation on the filter screen, the significant reduction in the sewage treatment efficiency, and the restriction of the sewage treatment rhythm, the present application provides a water source heat pump pretreatment device for sewage plants.

[0006] The water source heat pump pretreatment device for sewage plants provided by the present application adopts the following technical solution: A water source heat pump pretreatment device for sewage plants, comprising: A sewage flow guide cylinder for guiding sewage, the sewage flow guide cylinder is in an L-shaped structure, and a filter screen is fixed in a vertical cavity of the sewage flow guide cylinder; The garbage self-cleaning mechanism is arranged at the turning point of the sewage guide cylinder and above the filter screen, and comprises a driven rod, an adjusting plate, a linkage plate, a limiting plate and a cleaning comb. The linkage mechanism is arranged on one side of the garbage self-cleaning mechanism.

[0007] By adopting the above technical scheme, the two core pain points of the water source heat pump pretreatment device are effectively solved. First, the linkage mechanism driven by water flow impact drives the garbage self-cleaning mechanism to realize online cleaning of the filter screen, so that the filtering efficiency can always be maintained at the initial state, which has a significant advantage over the efficiency decay of the traditional fixed filter screen caused by impurity accumulation. Second, the dynamic cleaning mechanism avoids the need for manual shutdown cleaning. At the same time, the self-cleaning system relying entirely on water power is more energy-efficient than the electric backwashing scheme. This design breaks the vicious cycle of traditional filter devices "filtering-clogging-shutdown", and realizes the dual optimization of processing efficiency and energy saving and consumption reduction.

[0008] Optionally, the linkage mechanism comprises a driving rod, a paddle, a first belt disc, a second belt disc and a belt, the driving rod is rotatably connected in the sewage guide cylinder and located at the turning point of the sewage guide cylinder, the paddle is fixed on the outer wall of the driving rod and is provided with a plurality of equidistant paddles, the first belt disc is coaxially fixed on the driving rod, the second belt disc is coaxially rotatably connected on the driven rod, and the belt is arranged between the first belt disc and the second belt disc.

[0009] By adopting the above technical scheme, the paddle arranged at the turning point of the sewage guide cylinder can maximize the utilization of water flow impact energy to drive the driving rod to rotate, which not only ensures the optimal water impact angle, but also avoids occupying additional flow channel space. At the same time, the belt drive is used instead of the transmission gear box drive, and a compact belt disc design is adopted, so that the axial installation space requirement is greatly reduced compared with the gear box, which is especially suitable for the narrow environment of the sewage guide cylinder.

[0010] Optionally, the linkage mechanism further comprises a synchronous rotating drum, a directional chute, a clamping rod and a clamping groove, the synchronous rotating drum is coaxially fixed on the driven rod and located on one side of the second pulley, the directional chute is arranged through the synchronous rotating drum, the clamping rod is slidingly clamped in the directional chute, the clamping groove is concavely arranged on the second pulley, and one end of the clamping rod is inserted into the clamping groove.

[0011] By adopting the above technical scheme, the insertion and separation of the clamping rod and the clamping groove are utilized, so that the second pulley and the synchronous rotating drum can be synchronously rotated and unlocked and separated, the garbage self-cleaning mechanism can work when cleaning is needed, and the cleaning action is automatically unlocked and not performed when cleaning is not needed.

[0012] Optionally, the linkage mechanism further comprises an adjusting rod and a protrusion, one end of the adjusting rod is rotationally connected to the outer wall of the sewage flow guide cylinder, the other end of the adjusting rod is provided with a slope structure, the protrusion is fixed on the clamping rod, and the slope structure of the adjusting rod slidingly abuts against the protrusion.

[0013] By adopting the above technical scheme, the limiting effect of the adjusting rod and the protrusion is utilized, so that the position of the clamping rod in the directional chute can be quickly adjusted.

[0014] Optionally, a first reset spring is arranged in the directional chute, one end of the first reset spring is fixed to one end of the clamping rod away from the second pulley, and the other end of the first reset spring is fixed to the synchronous rotating drum.

[0015] By adopting the above technical scheme, when the adjusting rod and the protrusion are separated, the clamping rod can be quickly reset by the elastic force of the first reset spring.

[0016] Optionally, the linkage mechanism further comprises a push-pull rod, a supporting rod and a water baffle, one end of the supporting rod is rotationally connected to the outer wall of the sewage flow guide cylinder and located below the adjusting rod, both ends of the push-pull rod are rotationally connected between the adjusting rod and the supporting rod, the water baffle is fixed to the other end of the supporting rod, an arc-shaped through slot is arranged through the outer wall of the sewage flow guide cylinder, the water baffle passes through the arc-shaped through slot and is partially located in the internal cavity of the sewage flow guide cylinder and at the bottom of the filter screen.

[0017] By adopting the technical scheme, the water flow is blocked by the water baffle, and then the push-pull rod and other structures are driven by the water flow to be linked, when the flow rate is reduced to the threshold value due to slight blockage of the filter screen, the clamping rod can be automatically engaged with the clamping groove and start the garbage self-cleaning mechanism to perform the cleaning action, so that the filtering efficiency is always maintained at the initial state, and the action of the garbage self-cleaning mechanism is automatically controlled by the water flow, which is more accurate and avoids the use of electrical components, thereby avoiding the later maintenance work, and the garbage self-cleaning mechanism only works when the filter screen is slightly blocked, so that the filter screen maintains the filtering effect while avoiding the continuous and uninterrupted work of the garbage self-cleaning mechanism to cause structural wear.

[0018] Optionally, a positioning rotating rod is rotatably connected to the outer wall of the sewage guide cylinder, the push-pull rod is slidably connected to the positioning rotating rod, and a second return spring is arranged outside the push-pull rod, one end of the second return spring is fixed to the positioning rotating rod, and the other end of the second return spring is fixed to the push-pull rod.

[0019] By adopting the technical scheme, when the water flow impact force of the sewage is less than the elastic force of the second return spring, the push-pull rod can be automatically reset, and the clamping rod is linked to be butted with the clamping groove, so that the garbage self-cleaning mechanism can perform the cleaning action.

[0020] Optionally, a slot is formed in one side of the vertical cylinder of the sewage guide cylinder, one end of the filter screen is flush with the bottom of the slot, a limiting frame is fixed to the bottom of the slot, and a garbage collection box is clamped in the limiting frame.

[0021] By adopting the technical scheme, the limiting frame supports the garbage collection box, and the garbage collection box collects and stores the filtered garbage, which is convenient for later centralized cleaning and saves time and effort.

[0022] Optionally, the garbage collection box is made of stainless steel material and has a rectangular structure, and a plurality of holes are formed in the outer wall of the garbage collection box.

[0023] By adopting the technical scheme, the stainless steel material avoids rusting and damaging the garbage collection box, and the holes allow the sewage on the garbage to flow out of the garbage collection box.

[0024] Optionally, a sewage backflow cylinder is fixed to the side wall of the sewage guide cylinder, the garbage collection box is located at the top end of the sewage backflow cylinder, the bottom of the sewage backflow cylinder has an inclined surface structure, a backflow groove is communicated between the sewage backflow cylinder and the sewage guide cylinder, and the backflow groove is located on the side of the sewage backflow cylinder away from the inclined surface.

[0025] By adopting the technical scheme, the sewage backflow cylinder is arranged to enable the sewage flowing out of the garbage collection box to flow back to the sewage guide cylinder for directional flow guide.

[0026] To sum up, the present application has at least one of the following beneficial technical effects: The linkage mechanism driven by water flow impact drives the garbage self-cleaning mechanism to realize online cleaning of the filter screen, so that the filtering efficiency can always be maintained at the initial state, which has a significant advantage over the performance decay of traditional fixed filter screens due to impurity accumulation. The dynamic cleaning mechanism avoids the need for manual shutdown cleaning; at the same time, the self-cleaning system completely relying on water power is more energy-efficient than the electric backwashing scheme. This design breaks the vicious cycle of "filtration-clogging-shutdown" of traditional filtration devices, achieving double optimization of processing efficiency and energy saving; The water baffle blocks the water flow, and the push-pull rod and other structures driven by the water flow can be linked. When the filter screen is slightly clogged and the flow rate drops to a threshold value, the clamping rod can automatically engage with the clamping groove and start the garbage self-cleaning mechanism to perform cleaning actions, so that the filtering efficiency can always be maintained at the initial state. At the same time, the garbage self-cleaning mechanism is automatically controlled by the water flow to perform or not to perform the action, which is more accurate and avoids the use of electrical components, thereby avoiding the need for later maintenance. At the same time, the garbage self-cleaning mechanism only works when the filter screen is slightly clogged, so that the filter screen can maintain the filtering effect while avoiding the continuous and uninterrupted work of the garbage self-cleaning mechanism, which can cause structural wear and tear. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is an external overall structure schematic diagram of a water source heat pump pretreatment device for a sewage plant in the present embodiment.

[0028] Figure 2 is a cross-sectional structure schematic diagram of a sewage guide cylinder in the present embodiment.

[0029] Figure 3 is a structure schematic diagram of a garbage self-cleaning mechanism in the present embodiment.

[0030] Figure 4 is a structure schematic diagram of a linkage mechanism in the present embodiment.

[0031] Figure 5 is a schematic diagram of a synchronous rotating drum and its connection structure in the present embodiment.

[0032] Figure 6 is a schematic diagram of an adjusting rod and its connection structure in the present embodiment.

[0033] Figure 7 is a schematic diagram of a garbage collection box connection structure in the present embodiment.

[0034] Reference signs: 1, sewage guide cylinder; 2, filter screen; 3, garbage self-cleaning mechanism; 31, driven rod; 32, adjusting plate; 33, linkage plate; 34, limiting plate; 35, cleaning comb; 4, linkage mechanism; 41, driving rod; 42, paddle; 43, first belt disc; 44, second belt disc; 45, belt; 5, limiting frame; 6, garbage collection box; 7, sewage return cylinder. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying Figures 1-7 Further detailed description will be made to the present application.

[0036] The embodiment of the present application discloses a water source heat pump pretreatment device for sewage plant.

[0037] It should be noted that in the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present application.

[0038] Reference Figure 1 And Figure 2 A water source heat pump pretreatment device for sewage plant, comprising a sewage guide cylinder 1, a filter screen 2, a garbage self-cleaning mechanism 3, a linkage mechanism 4 and a limiting frame 5, the sewage guide cylinder 1 for guiding sewage is in L-shaped structure, and the filter screen 2 is fixed in the vertical cavity of the sewage guide cylinder 1, the garbage self-cleaning mechanism 3 is arranged at the turning point of the sewage guide cylinder 1 and is located above the filter screen 2, the garbage self-cleaning mechanism 3 comprises a driven rod 31, an adjusting plate 32, a linkage plate 33, a limiting plate 34 and a cleaning comb 35, the linkage mechanism 4 for driving the garbage self-cleaning mechanism 3 to link as a whole is arranged on one side of the garbage self-cleaning mechanism 3, which effectively solves the two core pain points of the sewage treatment filtering device, firstly, the linkage mechanism 4 driven by water flow impact drives the garbage self-cleaning mechanism 3 to realize online cleaning of the filter screen 2, so that the filtering efficiency can always maintain the initial state, which has a significant advantage compared with the efficiency decay of the traditional fixed filter screen caused by impurity accumulation; secondly, the dynamic cleaning mechanism avoids the need for manual cleaning during shutdown; at the same time, the self-cleaning system completely dependent on water power is more energy-saving than the electric backwashing scheme, this design breaks the vicious cycle of "filtration-clogging-shutdown" of the traditional filtering device, and realizes the double optimization of treatment efficiency and energy saving and consumption reduction.

[0039] Specifically, the driven rod 31 is rotatably connected inside the sewage guide tube 1, one end of the adjusting plate 32 is fixed to the driven rod 31, and the other end is rotatably connected to the linkage plate 33. One end of the linkage plate 33 and the limiting plate 34 are rotatably connected to each other, and the other end of the limiting plate 34 is rotatably connected inside the sewage guide tube 1. The cleaning comb 35 is fixed to the other end of the linkage plate 33, and the cleaning comb 35 is misaligned with the filter screen 2.

[0040] Reference Figure 3 In this embodiment of the invention, the linkage mechanism 4 includes a drive rod 41, a blade 42, a first belt pulley 43, a second belt pulley 44, and a belt 45. By utilizing the blade 42 arranged at the turning point of the sewage guide tube 1, the water flow impact energy can be maximized to drive the drive rod 41 to rotate, ensuring the optimal water impact angle and avoiding the occupation of additional flow channel space. The belt 45 drives the drive instead of the transmission gearbox, and the compact belt pulley design significantly reduces the axial installation space requirement compared to the gearbox, making it particularly suitable for the narrow environment where the sewage guide tube 1 is located.

[0041] Specifically, the active rod 41 is rotatably connected inside the sewage guide tube 1 and is located at the turning point of the sewage guide tube 1. The blades 42 are fixed on the outer wall of the active rod 41 and are arranged in multiple equidistant positions. The first belt pulley 43 is coaxially fixed on the active rod 41, the second belt pulley 44 is coaxially fixed on the driven rod 31, and the belt 45 is arranged between the first belt pulley 43 and the second belt pulley 44.

[0042] Reference Figure 4 and Figure 5 In this embodiment of the invention, the linkage mechanism 4 further includes a synchronous rotating drum 46, a directional sliding groove 47, a locking rod 48, a locking slot 49, an adjusting rod 410, and a protrusion 411. By using the insertion and separation of the locking rod 48 and the locking slot 49, the second belt pulley 44 and the synchronous rotating drum 46 can rotate synchronously and unlock and separate, so that the waste self-cleaning mechanism 3 can work when cleaning is needed and automatically unlock and not perform cleaning actions when cleaning is not needed. By using the limiting effect of the adjusting rod 410 and the protrusion 411, the position of the locking rod 48 in the directional sliding groove 47 can be quickly adjusted.

[0043] Specifically, the synchronous rotating drum 46 is coaxially fixed on the driven rod 31 and located on one side of the second belt pulley 44. The directional groove 47 is installed through the synchronous rotating drum 46. The locking rod 48 is slidably locked in the directional groove 47. The locking groove 49 is recessed in the second belt pulley 44, and one end of the locking rod 48 is inserted into the locking groove 49. One end of the adjusting rod 410 is rotatably connected to the outer wall of the sewage guide cylinder 1, and the other end is provided with an inclined structure. The protrusion 411 is fixed on the locking rod 48, and the inclined structure of the adjusting rod 410 slides against the protrusion 411.

[0044] ReferenceFigure 6 The first reset spring 412 is arranged in the directional chute 47, one end of the first reset spring 412 is fixed with the clamping rod 48 away from the second belt disc 44, the other end of the first reset spring 412 is fixed with the synchronous rotating cylinder 46, and the clamping rod 48 can be quickly reset when the adjusting rod 410 is separated from the protruding block 411 by the elastic force of the first reset spring 412.

[0045] In the embodiment of the application, the linkage mechanism 4 further comprises a push-pull rod 413, a supporting rod 414 and a water baffle 415, the water baffle 415 is used to block the water flow, and the push-pull rod 413 and other structures are driven by the water flow to be linked, when the flow rate of the filter screen 2 is reduced to a threshold value due to slight blockage, the clamping rod 48 can be automatically engaged with the clamping groove 49 and start the garbage self-cleaning mechanism 3 to perform a cleaning action, so that the filtering efficiency is always maintained at the initial state, and the action of the garbage self-cleaning mechanism 3 is automatically controlled by the water flow, which is more accurate and avoids the use of electrical components, thereby avoiding the later maintenance work, and the garbage self-cleaning mechanism 3 only works when the filter screen 2 is slightly blocked, so that the filter screen 2 maintains the filtering effect while avoiding the continuous and uninterrupted work of the garbage self-cleaning mechanism 3 to cause structural wear.

[0046] One end of the supporting rod 414 is rotatably connected to the outer wall of the sewage guide cylinder 1 and is located below the adjusting rod 410, both ends of the push-pull rod 413 are rotatably connected between the adjusting rod 410 and the supporting rod 414, the water baffle 415 is fixed to the other end of the supporting rod 414, and an arc-shaped through slot is provided through the outer wall of the sewage guide cylinder 1, the water baffle 415 passes through the arc-shaped through slot and is partially located in the internal cavity of the sewage guide cylinder 1 and at the bottom of the filter screen 2.

[0047] The positioning rotating rod 416 is rotatably connected to the outer wall of the sewage guide cylinder 1, and the push-pull rod 413 is slidably connected to the positioning rotating rod 416. The second reset spring 417 is arranged outside the push-pull rod 413, one end of the second reset spring 417 is fixed with the positioning rotating rod 416, and the other end is fixed with the push-pull rod 413.

[0048] Specifically, when the water flow impact force of the sewage is less than the elastic force of the second reset spring 417, the push-pull rod 413 can be automatically reset, and the clamping rod 48 is linked to be in butt joint with the clamping groove 49, so that the garbage self-cleaning mechanism 3 can perform a cleaning action.

[0049] Reference Figure 7In the embodiment of the present application, the sewage guide cylinder 1 is provided with a notch on one side of the vertical cylinder, one end of the filter screen 2 is flush with the bottom of the notch, and a limiting frame 5 is fixed at the bottom of the notch, a garbage collection box 6 is clamped in the limiting frame 5, the limiting frame 5 supports the garbage collection box 6, and the filtered garbage is collected and stored in the garbage collection box 6, so that the garbage can be cleaned later, saving time and effort.

[0050] Specifically, in the embodiment of the present application, the garbage collection box 6 is made of stainless steel and has a rectangular structure, and a plurality of holes are provided on the outer wall of the garbage collection box 6, so that the garbage collection box 6 is not rusted and damaged, and the sewage on the garbage can flow out of the garbage collection box 6 through the holes.

[0051] In the embodiment of the present application, the sewage guide cylinder 1 is provided with a sewage backflow cylinder 7 on the side wall, the garbage collection box 6 is partially located at the top end of the sewage backflow cylinder 7, the bottom of the sewage backflow cylinder 7 is inclined, and a backflow groove is connected between the sewage backflow cylinder 7 and the sewage guide cylinder 1, the backflow groove is located on the side of the sewage backflow cylinder 7 away from the inclined surface, and the sewage flowing out of the garbage collection box 6 can flow back to the sewage guide cylinder 1 for directional flow guide by the sewage backflow cylinder 7.

[0052] The implementation principle of the sewage plant water source heat pump pretreatment device in the embodiment of the present application is as follows: first, the horizontal end of the sewage guide cylinder 1 is connected with an external pipeline, so that the sewage enters the inside of the sewage guide cylinder 1 from the horizontal end and flows to the vertical end of the sewage guide cylinder 1, in the process of flowing, the filter screen 2 filters the garbage in the sewage, at the same time, the water flow impact paddle 42 drives the driving rod 41 to rotate, at this time, the first belt disc 43 rotates synchronously, and the second belt disc 44 rotates synchronously through the belt 45, at this time, the water flow impact force is large, the water baffle 415 is stressed to drive the push-pull rod 413 and the adjusting rod 410 to link, so that one end of the adjusting rod 410 is separated from the protrusion 411, at this time, the clamping rod 48 is separated from the clamping groove 49, and the garbage self-cleaning mechanism 3 does not act, when the filter screen 2 is slightly blocked and the water flow impact force is less than the threshold value of the second return spring 417, the push-pull rod 413 and the adjusting rod 410 move reversely, at this time, the clamping rod 48 is inserted into the clamping groove 49, and the garbage self-cleaning mechanism 3 acts, at this time, the driven rod 31 rotates, the adjusting plate 32 is driven to rotate through the driven rod 31, the adjusting plate 32 drives the linkage plate 33 to link, and under the limiting action of the limiting plate 34, the cleaning comb 35 is driven to move in a reciprocating arc line, and the garbage on the filter screen 2 is moved to the garbage collection box 6.

[0053] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A water source heat pump pretreatment device for sewage plants, characterized by, Include: Sewage guide cylinder (1) for sewage diversion The sewage guide cylinder (1) is L-shaped structure, and the filter screen (2) is fixed in the vertical cavity of the sewage guide cylinder (1); The garbage self-cleaning mechanism (3) is used for cleaning the garbage accumulated on the filter screen (2), and the garbage self-cleaning mechanism (3) is arranged at the turning point of the sewage guide cylinder (1) and located above the filter screen (2), the garbage self-cleaning mechanism (3) includes driven rod (31), adjusting plate (32), linkage plate (33), limiting plate (34) and cleaning comb (35), the driven rod (31) is rotatably connected in the sewage guide cylinder (1), one end of the adjusting plate (32) is fixed on the driven rod (31), the other end is rotatably connected to the linkage plate (33), one end of the linkage plate (33) and the limiting plate (34) is rotatably connected, the other end of the limiting plate (34) is rotatably connected in the sewage guide cylinder (1), the cleaning comb (35) is fixed on the other end of the linkage plate (33), and the cleaning comb (35) is misaligned with the filter screen (2). The linkage mechanism (4) is used for driving the garbage self-cleaning mechanism (3) to link, and the linkage mechanism (4) is arranged on one side of the garbage self-cleaning mechanism (3).

2. A water source heat pump pre-treatment device for sewage plants according to claim 1, characterized in that, The linkage mechanism (4) includes driving rod (41), paddle (42), first belt disc (43), second belt disc (44) and belt (45), the driving rod (41) is rotatably connected in the sewage guide cylinder (1), and located at the turning point of the sewage guide cylinder (1), the paddle (42) is fixed on the outer wall of the driving rod (41), and a plurality of paddles are equidistantly arranged, the first belt disc (43) is coaxially fixed on the driving rod (41), the second belt disc (44) is coaxially rotatably connected on the driven rod (31), and the belt (45) is arranged between the first belt disc (43) and the second belt disc (44).

3. A water source heat pump pre-treatment device for sewage plants according to claim 2, characterized in that, The linkage mechanism (4) further includes synchronous rotating drum (46), directional chute (47), clamping rod (48) and clamping groove (49), the synchronous rotating drum (46) is coaxially fixed on the driven rod (31), and located on one side of the second belt disc (44), the directional chute (47) is throughly arranged on the synchronous rotating drum (46), the clamping rod (48) is slidingly clamped in the directional chute (47), the clamping groove (49) is recessed on the second belt disc (44), and one end of the clamping rod (48) is inserted into the clamping groove (49).

4. A water source heat pump pre-treatment device for a sewage plant according to claim 3, characterized in that, The linkage mechanism (4) further includes adjusting rod (410) and protrusion (411), one end of the adjusting rod (410) is rotatably connected to the outer wall of the sewage guide cylinder (1), the other end is provided with inclined surface structure, the protrusion (411) is fixed on the clamping rod (48), and the inclined surface structure of the adjusting rod (410) is slidingly abutted with the protrusion (411).

5. A water source heat pump pre-treatment device for a sewage plant according to claim 4, characterized in that, The directional chute (47) is provided with a first reset spring (412), one end of the first reset spring (412) is fixed with the clamping rod (48) away from the second belt disc (44), the other end of the first reset spring (412) is fixed with the synchronous rotating cylinder (46).

6. A water source heat pump pre-treatment device for a sewage plant according to claim 5, characterized in that, The linkage mechanism (4) further comprises a push-pull rod (413), a supporting rod (414) and a water baffle (415), one end of the supporting rod (414) is rotatably connected to the outer wall of the sewage flow guide cylinder (1) and is located below the adjusting rod (410), both ends of the push-pull rod (413) are rotatably connected between the adjusting rod (410) and the supporting rod (414), the water baffle (415) is fixed to the other end of the supporting rod (414) and is provided with an arc-shaped through slot on the outer wall of the sewage flow guide cylinder (1), the water baffle (415) passes through the arc-shaped through slot and is partially located in the internal cavity of the sewage flow guide cylinder (1) and at the bottom of the filter screen (2).

7. A water source heat pump pre-treatment device for a sewage plant according to claim 6, characterized in that, The outer wall of the sewage flow guide cylinder (1) is rotatably connected with a positioning rotating rod (416), the push-pull rod (413) is slidably connected with the positioning rotating rod (416), the outer portion of the push-pull rod (413) is sleeved with a second reset spring (417), one end of the second reset spring (417) is fixed with the positioning rotating rod (416) and the other end is fixed with the push-pull rod (413).

8. A water source heat pump pre-treatment device for sewage plants according to claim 1, characterized in that, One side of the vertical cylinder of the sewage flow guide cylinder (1) is provided with a slot, one end of the filter screen (2) is flush with the bottom of the slot, a limiting frame (5) is fixed to the bottom of the slot, and a garbage collection box (6) is clamped in the limiting frame (5).

9. A water source heat pump pre-treatment device for a sewage plant according to claim 8, characterized in that, The garbage collection box (6) is made of stainless steel material and has a rectangular structure, and a plurality of holes are provided through the outer wall of the garbage collection box (6).

10. A water source heat pump pre-treatment device for a sewage plant according to claim 9, characterized in that, A sewage backflow cylinder (7) is fixed to the side wall of the sewage flow guide cylinder (1), the garbage collection box (6) is partially located at the top end of the sewage backflow cylinder (7), the bottom of the sewage backflow cylinder (7) has an inclined surface structure, and a backflow groove is communicated between the sewage backflow cylinder (7) and the sewage flow guide cylinder (1), and the backflow groove is located on the side of the sewage backflow cylinder (7) away from the inclined surface.

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