Treatment liquid supply system for mushroom square cabin and pump of treatment liquid supply system

Abstract

The treating fluid supply system comprises an impeller and a volute, the impeller comprises a rear cover disc, a front cover disc, blades and a hub barrel, the hub barrel is arranged on the inner circumferential side of the rear cover disc, the end of a rotating shaft is connected with a flow guide cap, and a plurality of balance holes distributed in the circumferential direction are formed in the rear cover disc; the impeller is characterized in that the impeller further comprises an adjusting hub, the adjusting hub is arranged on the peripheral face of the hub cylinder in a sleeving mode, and the axial position of the adjusting hub can be automatically adjusted under the pressure effect of a pumped liquid medium; the adjusting hub comprises an arc-shaped outer ring part and an inner cylinder part, a groove is formed in the inner circumferential face of the inner cylinder part, the spring is arranged in the groove, a connecting ring is installed at the left end of the outer circumferential face of the hub cylinder, one end of the spring abuts against the right end face of the connecting ring, and the other end of the spring abuts against the right side face of the groove. According to the pump, the flowing performance of liquid in the impeller cavity can be adjusted, so that the pressure and flow characteristics of the pump can be adjusted, and the multi-working-condition operation efficiency and the output stability of the pump are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of movable mushroom shelter equipment, and in particular to a treatment liquid supply system and a pump thereof for the movable mushroom shelter. Background Art

[0002] The existing treatment liquid supply system for mushroom cabins includes a pump, pipelines, control valves, treatment liquid, multiple sensors, and a control system. The treatment liquid is culture liquid / nutrient solution, atomized water, sterilization liquid, etc.

[0003] The existing pump for the treatment liquid supply system of the mushroom cabin includes an impeller and a volute. The impeller is rotatably mounted within the volute and mounted on a rotating shaft. The impeller includes a rear cover plate, a front cover plate, blades, and a hub. Multiple blades are circumferentially distributed and connected between the front and rear cover plates. A hub is provided on the inner circumference of the rear cover plate. A guide cap is connected to the end of the rotating shaft. The rear cover plate is provided with multiple balancing holes distributed circumferentially. However, the existing pump's arc-shaped hub cannot be automatically adjusted (not automatically adjusted under liquid medium pressure), the pump's impeller chamber has poor regulation performance, the pump's pressure and flow characteristics are poorly adjustable, and the multi-operation efficiency and output stability need to be further improved. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a treatment liquid supply system and a pump for a mushroom cabin, which can adjust the flow performance / flow state of the liquid in the impeller chamber, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operating efficiency of the pump and the output stability.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A pump for a treatment liquid supply system for a mushroom cabin, comprising an impeller and a volute, wherein the impeller is rotatably mounted in the volute and mounted on a rotating shaft, the impeller comprising a rear cover disc, a front cover disc, blades, and a hub barrel, wherein a plurality of blades are circumferentially distributed and connected between the front cover disc and the rear cover disc, a hub barrel is provided on the inner circumference of the rear cover disc, a guide cap is connected to the end of the rotating shaft, and a plurality of balancing holes distributed circumferentially are provided on the rear cover disc; the characteristic is that the impeller also comprises an adjusting hub, which is sleeved on the outer circumferential surface of the hub barrel, and the axial position of the adjusting hub can be automatically adjusted under the pressure of the pumped liquid medium.

[0007] Furthermore, the adjusting hub includes an arc-shaped outer ring portion and an inner tube portion. The arc-shaped outer ring portion and the inner tube portion are connected at the upstream end. A groove is provided on the inner circumference of the inner tube portion. The spring is arranged in the groove, and the spring is sleeved on the outer circumference of the hub tube. A connecting ring is installed at the left end of the outer circumference of the hub tube. The outer circumference of the connecting ring is arranged on the inner circumference of the upstream end of the arc-shaped outer ring portion. One end of the spring abuts against the right end face of the connecting ring, and the other end abuts against the right side face of the groove.

[0008] Furthermore, a reflux cavity is formed between the inner circumferential surface of the downstream end of the arc-shaped outer ring portion and the outer circumferential surface of the downstream end of the inner tube portion. The position of the reflux cavity is set corresponding to the position of the balance hole. There is a reflux gap between the downstream end of the arc-shaped outer ring portion and the inner surface of the rear cover plate. The downstream end of the arc-shaped outer ring portion is adjacent to the leading edge of the blade.

[0009] Furthermore, the axial movement distance of the adjustment hub is limited as follows: the right end is limited by the inner side of the rear cover plate, and the left end is limited by the right end surface of the guide cap. The adjustment hub is axially movable and slidingly fitted relative to the hub barrel and the connecting ring.

[0010] Furthermore, a first communicating hole is provided on the inner cylinder portion, one end of the first communicating hole is connected to the reflux chamber, and the other end is connected to the groove; a second communicating hole is provided on the arc-shaped outer ring portion, one end of the second communicating hole is connected to the groove, and the other end is connected to the impeller inlet inner cavity on the outer peripheral surface of the arc-shaped outer ring portion.

[0011] Furthermore, the first liquid flow path is: outer side surface of the rear cover disc → balancing hole → reflux chamber → reflux gap → leading edge of the blade; the second liquid flow path is: outer side surface of the rear cover disc → balancing hole → reflux chamber → first connecting hole → groove → second connecting hole → impeller inlet inner cavity.

[0012] Furthermore, the connecting ring has an internal thread, and the left end of the hub has an external thread. The connecting ring is threadedly connected to the hub, and the axial position of the connecting ring can be adjusted by rotating the connecting ring, thereby adjusting the preload force of the spring.

[0013] Furthermore, the connecting ring is axially movable and slidingly fitted relative to the hub. After the position of the connecting ring is adjusted and locked by a set screw, the axial position of the connecting ring can be adjusted by axially moving the connecting ring, thereby adjusting the preload force of the spring.

[0014] Furthermore, an axial guide structure that cooperates with each other is provided between the inner cylinder portion and the hub cylinder to adjust the guidance of the hub during axial movement.

[0015] A treatment liquid supply system for a mushroom shelter comprises the above-mentioned pump, pipeline, control valve, treatment liquid, multiple sensors, and a control system. The treatment liquid is culture liquid / nutrient solution, atomized water, sterilizing liquid, etc.

[0016] The present invention relates to a treatment liquid supply system and pump for a mushroom cabin. When the centrifugal pump is working, the high-pressure liquid on the outer side of the rear cover plate flows to the reflux chamber through the balance hole. The regulating hub automatically adjusts its axial position under the pressure of the pumped liquid medium to adjust the flow performance / flow state of the liquid in the impeller chamber, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operation efficiency and output stability of the pump. The present invention can adjust / reduce the movement resistance of the regulating hub through the design of the first connecting hole and the second connecting hole and the adjustable design of the connecting ring, and can further and better adjust the flow performance / flow state of the liquid in the impeller chamber, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operation efficiency and output stability of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the impeller structure of the pump of the treatment liquid supply system for the mushroom shelter of the present invention;

[0018] Figure 2 A partially enlarged structural diagram of an impeller of a pump of a treatment liquid supply system of the present invention;

[0019] Figure 3 This is a partially enlarged structural schematic diagram of the impeller of the pump of the treatment liquid supply system of the present invention.

[0020] In the figure: rear cover plate 1, front cover plate 2, blades 3, leading edge 31, hub cylinder 4, rotating shaft 5, guide cap 6, balancing hole / adjustment hole 7, adjusting hub 8, arc-shaped outer ring portion 81, inner cylinder portion 82, groove 83, spring 84, reflux chamber 85, first connecting hole 86, second connecting hole 87, connecting ring 9, reflux gap G (G1, G2). DETAILED DESCRIPTION

[0021] To make the technical solution and its advantages of the present invention more clear, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, the accompanying drawings only show the parts / structures related to the present invention. Other related parts can refer to the general design. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0022] All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention. Furthermore, unless otherwise defined, technical or scientific terms used in the description of the present invention shall have the same meanings as those generally understood by persons of ordinary skill in the art to which the present invention belongs.

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] like Figure 1-3 As shown, a pump for a treatment liquid supply system for a mushroom cabin comprises an impeller and a volute. The impeller is rotatably mounted in the volute and mounted on a rotating shaft 5. The impeller comprises a rear cover disc 1, a front cover disc 2, blades 3, and a hub barrel 4. A plurality of blades 3 are distributed circumferentially and connected between the front cover disc 2 and the rear cover disc 1. A hub barrel 4 is provided on the inner circumference of the rear cover disc 1. A guide cap 6 is connected (threadedly connected) to the end of the rotating shaft 5. A plurality of balancing holes / adjustment holes 7 distributed circumferentially are provided on the rear cover disc 1. The impeller is characterized in that the impeller further comprises an adjusting hub 8, which is sleeved on the outer circumferential surface of the hub barrel 4, and the axial position of the adjusting hub 8 can be automatically adjusted under the pressure of the pumped liquid medium.

[0025] The adjusting hub 8 includes an arc-shaped outer ring portion 81 and an inner tube portion 82. The arc-shaped outer ring portion 81 and the inner tube portion 82 are connected at the upstream end (left end). The inner circumference of the inner tube portion 82 is provided with a groove 83. The spring 84 is arranged in the groove 83, and the spring 84 is sleeved on the outer circumference of the hub tube 4. A connecting ring 9 is installed at the left end of the outer circumference of the hub tube 4. The outer circumference of the connecting ring 9 is arranged on the inner circumference of the upstream end of the arc-shaped outer ring portion 81. One end of the spring 84 abuts against the right end face of the connecting ring 9, and the other end abuts against the right side face of the groove 83.

[0026] A reflux chamber 85 is formed between the inner circumferential surface of the downstream end of the arc-shaped outer ring portion 81 and the outer circumferential surface of the downstream end of the inner tube portion 82. The position of the reflux chamber 85 is set corresponding to the position of the balancing hole 7. A reflux gap G is provided between the downstream end of the arc-shaped outer ring portion 81 and the inner surface of the rear cover disk 1 (the reflux gaps G1 and G2 correspond to different axial positions of the adjusting hub 8 respectively). The downstream end of the arc-shaped outer ring portion 81 is adjacent to the leading edge 31 of the blade.

[0027] The axial movement distance of the adjusting hub 8 is limited as follows: the right end is limited by the inner side of the rear cover plate 1, and the left end is limited by the right end surface of the deflector cap 6. The adjusting hub 8 is axially movable and slidingly fitted relative to the hub barrel 4 and the connecting ring 9.

[0028] When the centrifugal pump of the present invention is working, the high-pressure liquid on the outer side of the rear cover disc 1 flows to the reflux chamber 85 through the balancing hole 7, and the regulating hub 8 automatically adjusts its axial position under the pressure of the pumped liquid medium to adjust the flow performance / flow state of the liquid in the impeller chamber, thereby being able to adjust the pressure and flow characteristics of the pump, improving the multi-operating efficiency of the pump and the output stability.

[0029] In one embodiment, a first communicating hole 86 is provided on the inner cylinder portion 82, one end / upstream end of the first communicating hole 86 is connected to the reflux chamber 85, and the other end is connected to the groove 83, and a second communicating hole 87 is provided on the arc-shaped outer ring portion 81, one end / upstream end of the second communicating hole 87 is connected to the groove 83, and the other end is connected to the impeller inlet inner cavity on the outer peripheral surface of the arc-shaped outer ring portion 81.

[0030] like Figure 1-3 As shown, the arrow "→" indicates the direction of fluid flow, and the first path of liquid flow is: the outer side surface of the rear cover plate 1 → the balancing hole 7 → the reflux chamber 85 → the reflux gap G → the leading edge of the blade 31; the second path of liquid flow is: the outer side surface of the rear cover plate 1 → the balancing hole 7 → the reflux chamber 85 → the first connecting hole 86 → the groove 83 → the second connecting hole 87 → the impeller inlet cavity.

[0031] The return gaps G1 and G2 correspond to different axial positions of the adjusting hub 8 .

[0032] Through the design of the first connecting hole 86 and the second connecting hole 87, the present invention can adjust / reduce the movement resistance of the adjusting hub 8, and can further better adjust the flow performance / flow state of the liquid in the impeller chamber, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operating efficiency of the pump and the output stability.

[0033] In one embodiment, the connecting ring 9 has an internal thread, and the left end of the hub tube 4 has an external thread. The connecting ring 9 is threadedly connected to the hub tube 4. The axial position of the connecting ring 9 can be adjusted by rotating the connecting ring 9, thereby adjusting the preload force / preset pressure of the spring 84, thereby adjusting the range of the axial movement position of the adjusting hub 8 under the pressure of the pumped liquid medium.

[0034] In one embodiment, the connecting ring 9 is axially movable and slidingly fitted relative to the hub tube 4. After the position of the connecting ring 9 is adjusted and locked by a set screw (the set screw is arranged along the radial direction of the connecting ring 9), the axial position of the connecting ring 9 can be adjusted by axially moving the connecting ring 9, thereby adjusting the preload force / preset pressure of the spring 84, thereby adjusting the range of the axial movement position of the adjusting hub 8 under the pressure of the pumped liquid medium.

[0035] The present invention can further and better adjust the flow performance / flow state of the liquid in the impeller cavity through the adjustable design of the connecting ring 9, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operating efficiency of the pump and the output stability.

[0036] In one embodiment, a mutually cooperating axial guide structure is provided between the inner cylinder portion 82 and the hub cylinder 4 to adjust the guidance of the hub 8 during axial movement.

[0037] A treatment liquid supply system for a mushroom shelter comprises the above-mentioned pump, pipeline, control valve, treatment liquid, multiple sensors, and a control system. The treatment liquid is culture liquid / nutrient solution, atomized water, sterilizing liquid, etc.

[0038] The present invention provides a treatment liquid supply system and pump for a mushroom cabin. When the centrifugal pump is working, the high-pressure liquid on the outer side of the rear cover plate 1 flows to the reflux chamber 85 through the balance hole 7. The regulating hub 8 automatically adjusts its axial position under the pressure of the pumped liquid medium to adjust the flow performance / flow state of the liquid in the impeller chamber, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operating efficiency of the pump and the output stability.

[0039] The present invention, through the design of the first connecting hole 86 and the second connecting hole 87 and the adjustable design of the connecting ring 9, can adjust / reduce the movement resistance of the adjusting hub 8, and can further better adjust the flow performance / flow state of the liquid in the impeller chamber, thereby adjusting the pressure and flow characteristics of the pump, improving the multi-operating efficiency of the pump and the output stability.

[0040] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pump for a treatment liquid supply system for a mushroom cabin, comprising an impeller and a volute, wherein the impeller is rotatably mounted in the volute and mounted on a rotating shaft (5), the impeller comprising a rear cover disc (1), a front cover disc (2), blades (3), and a hub (4), wherein a plurality of blades are distributed along the circumference and connected between the front cover disc and the rear cover disc, a hub is provided on the inner circumference of the rear cover disc, a flow guide cap (6) is connected to the end of the rotating shaft, and a plurality of balancing holes (7) distributed along the circumference are opened on the rear cover disc; and the characteristics are as follows: The impeller further comprises an adjusting hub (8), which is sleeved on the outer peripheral surface of the hub barrel and whose axial position can be automatically adjusted under the pressure of the pumped liquid medium.

2. A pump for a treatment liquid supply system for a mushroom shelter according to claim 1, characterized in that: The regulating hub comprises an arc-shaped outer ring portion (81) and an inner tube portion (82). The arc-shaped outer ring portion and the inner tube portion are connected at the upstream end. The inner circumference of the inner tube portion is provided with a groove (83). A spring (84) is arranged in the groove, and the spring is sleeved on the outer circumference of the hub tube. A connecting ring (9) is installed at the left end of the outer circumference of the hub tube. The outer circumference of the connecting ring is arranged on the inner circumference of the upstream end of the arc-shaped outer ring portion. One end of the spring abuts against the right end face of the connecting ring, and the other end abuts against the right side face of the groove.

3. The pump for the treatment liquid supply system for the mushroom shelter according to claim 2, characterized in that: A reflux cavity (85) is formed between the inner circumference of the downstream end of the arc-shaped outer ring portion and the outer circumference of the downstream end of the inner cylinder portion. The position of the reflux cavity is arranged corresponding to the position of the balancing hole. A reflux gap (G) is provided between the downstream end of the arc-shaped outer ring portion and the inner side surface of the rear cover disc. The downstream end of the arc-shaped outer ring portion is adjacent to the leading edge (31) of the blade.

4. The pump for the treatment liquid supply system for the mushroom shelter according to claim 3, characterized in that: The axial movement distance of the adjusting hub is limited as follows: the right end is limited by the inner side of the rear cover plate, and the left end is limited by the right end surface of the deflector cap. The adjusting hub is axially movable and slidingly matched relative to the hub barrel and the connecting ring.

5. The pump for the treatment liquid supply system for the mushroom shelter according to claim 4, characterized in that: A first communicating hole (86) is provided on the inner cylinder portion, one end of the first communicating hole is connected to the reflux cavity, and the other end is connected to the groove; a second communicating hole (87) is provided on the arc-shaped outer ring portion, one end of the second communicating hole is connected to the groove, and the other end is connected to the impeller inlet inner cavity on the outer peripheral surface of the arc-shaped outer ring portion.

6. The pump for the treatment liquid supply system for the mushroom shelter according to claim 5, characterized in that: The first liquid flow path is: the outer side surface of the rear cover disc (1) → the balancing hole (7) → the reflux cavity (85) → the reflux gap (G) → the leading edge (31) of the blade; and the second liquid flow path is: the outer side surface of the rear cover disc → the balancing hole → the reflux cavity → the first communicating hole (86) → the groove (83) → the second communicating hole (87) → the inner cavity of the impeller inlet.

7. The pump for the treatment liquid supply system for the mushroom shelter according to claim 6, characterized in that: The connecting ring has an internal thread, and the left end of the hub has an external thread. The connecting ring is threadedly connected to the hub, and the axial position of the connecting ring can be adjusted by rotating the connecting ring, thereby adjusting the preload force of the spring.

8. The pump for the treatment liquid supply system for the mushroom shelter according to claim 6, characterized in that: The connecting ring is axially movable and slidingly fitted relative to the hub. After the position of the connecting ring is adjusted and locked by a set screw, the axial position of the connecting ring can be adjusted by axially moving the connecting ring, thereby adjusting the preload force of the spring.

9. The pump for the treatment liquid supply system for the mushroom shelter according to claim 6, characterized in that: An axial guide structure that cooperates with each other is provided between the inner cylinder portion and the hub cylinder to adjust the guidance of the hub during axial movement.

10. A treatment liquid supply system for a mushroom shelter, comprising a pump, a pipeline, a control valve, a treatment liquid, multiple sensors, and a control system. The treatment liquid is a culture liquid, a nutrient solution, atomized water, or a sterilizing liquid. The pump is the pump according to claim 6.

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