A spray machine plunger pump with a thickened pump head

Abstract

The utility model relates to plunger pump technical field especially is a kind of thickening pump head's sprayer plunger pump, including pump body, the front end of pump body is provided with thickening pump head structure, the thickening pump head structure includes the butt joint of integral connection with pump body, and the upper and lower ends of butt joint are respectively provided with mounting and water inlet part, the two sides of mounting, butt joint and water inlet part are all provided with several connecting structures, connecting structure is provided with connecting piece in, makes mounting, butt joint and water inlet part between fixed connection, the utility model is designed by thickening pump head structure, significantly improves overall strength and compression resistance, the thickness of butt joint, mounting and water inlet part is substantially increased compared with conventional pump head, can effectively resist deformation under high pressure working condition, avoid the problem such as the increase of sealing gap, flow fluctuation caused by structural deformation, ensure still can stable output design flow under high speed, solve the problem of conventional pump head high pressure failure.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, specifically a plunger pump for sprayers with a thickened pump head. Background Technology

[0002] As a core power component in agricultural plant protection and industrial cleaning, the performance of the plunger pump in sprayers directly affects operational efficiency and equipment reliability. In existing technologies, plunger pumps typically consist of a motor, transmission components, and a pump head. The reciprocating motion of the plunger inside the pump head achieves the intake and pressurization of the pesticide solution. Its structural stability and sealing performance are crucial to the overall pump efficiency.

[0003] However, traditional pump head designs are prone to deformation under high-pressure conditions, which can lead to a series of failures. For example, the increased clearance between the pump head and the check valve and pressure relief valve due to deformation can cause a decrease in sealing performance and leakage.

[0004] Therefore, a sprayer plunger pump with a thickened pump head is needed to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sprayer plunger pump with a thickened pump head to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A plunger pump for a sprayer with a thickened pump head includes a pump body. The front end of the pump body is provided with a thickened pump head structure. The thickened pump head structure includes a docking part integrally connected to the pump body. The upper and lower ends of the docking part are respectively provided with an mounting part and a water inlet part. The mounting part, the docking part, and the water inlet part are provided with several connecting structures on both sides. Connecting parts are provided in the connecting structures to fix the mounting part, the docking part, and the water inlet part together. The mounting components, water inlet components, and connecting parts are all equipped with sealing structures at their joints to maintain a sealing effect.

[0007] As a preferred embodiment of this utility model, the connecting part includes a mounting protrusion b, a limiting part, and a mounting protrusion a. The mounting protrusion b is fixedly disposed on one side of the mounting component, the limiting part is fixedly connected to one side of the docking part, and the mounting protrusion a is fixedly connected to one side of the water inlet component. The mounting protrusion b, the limiting part, and the water inlet component are located on the same vertical plane and are arranged sequentially from top to bottom.

[0008] As a preferred embodiment of this utility model, the connecting member is a screw, which passes through the mounting protrusion b, the limiting part, and the mounting protrusion a from bottom to bottom.

[0009] As a preferred embodiment of this utility model, the upper end of the docking part is provided with a plurality of upper docking protrusions, and the lower end of the docking part is provided with a plurality of lower docking protrusions, and each of the lower docking protrusions and the upper docking protrusions is connected to the interior of the docking part.

[0010] As a preferred embodiment of this utility model, the upper end of the water inlet is provided with several upper protrusions that cooperate with the lower connecting protrusions, and the interior of each of the several upper protrusions is connected to the interior of the water inlet. A water inlet interface is provided on one side of the water inlet.

[0011] As a preferred embodiment of this utility model, the lower end of the mounting component is provided with a plurality of lower protrusions that mate with the upper mating protrusions, and each of the lower protrusions is connected to the interior of the mounting component.

[0012] As a preferred embodiment of this utility model, the sealing structure includes insertion grooves formed at the ends of the lower and upper mating protrusions, the inner end face of the insertion grooves is provided with a groove, and a sealing ring is provided inside the grooves. An abutment ring is fixedly connected to the end face of each of the upper and lower protrusions.

[0013] As a preferred embodiment of this utility model, a pressure gauge, an air chamber, and a regulating valve are installed sequentially from left to right on the upper end of the mounting component, and a return water interface is provided on one side of the lower end of the regulating valve. The back of the mounting component is provided with several water outlets, and each water outlet is equipped with a valve.

[0014] In a preferred embodiment of this invention, the pump body has an internal cavity, and a mounting shaft is inserted through the cavity. One end of the mounting shaft extends to the outside of the pump body and is connected to a pulley. A cam is provided on the portion of the shaft inside the pump body. The docking part is provided with a number of plunger chambers, and each plunger chamber is provided with a plunger component. The end of the cam component is driven by the shaft to abut against the end of the plunger component at a distance.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model significantly improves the overall strength and pressure resistance by designing a thickened pump head structure. The thickness of the connecting part, mounting parts and water inlet parts is greatly increased compared with traditional pump heads, which can effectively resist deformation under high pressure conditions and avoid problems such as increased sealing gap and flow fluctuation caused by structural deformation. It ensures that the design flow can still be stably output at high speed, and solves the problem of high pressure failure of traditional pump heads. In this invention, the rigid connection structure enhances the overall stability of the pump head. The mounting parts, docking parts, and water inlet parts are fixed as a rigid whole by the mounting protrusions, limiting parts, and connecting parts, which restricts the relative displacement between components, reduces vibration and abnormal noise during equipment operation, lowers the risk of component damage caused by resonance, and improves the reliability of equipment operation. Attached Figure Description

[0016] Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is a second-view perspective perspective view of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Pump body; 2. Pulley; 3. Fixing foot; 4. Water inlet; 5. Connecting part; 6. Mounting part; 7. Pressure gauge; 8. Air chamber; 9. Water inlet; 10. Mounting protrusion a; 11. Limiting part; 12. Mounting protrusion b; 13. Screw; 14. Regulating valve; 15. Water return interface; 16. Water outlet interface; 17. Upper connecting protrusion; 18. Plunger; 19. Upper protrusion; 20. Lower protrusion; 21. Groove; 22. Sealing ring; 23. Abutment ring; 24. Lower connecting protrusion. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figure 1-4 This utility model provides a technical solution: For an example, please refer to... Figure 1 , 2 3 and 4, a plunger pump for a sprayer with a thickened pump head, comprising a pump body 1, a thickened pump head structure at the front end of the pump body 1, the thickened pump head structure including a docking part 5 integrally connected to the pump body 1, and mounting parts 6 and water inlet parts 4 respectively provided at the upper and lower ends of the docking part 5; several connecting structures are provided on both sides of the mounting parts 6, the docking part 5 and the water inlet parts 4, and connecting parts are provided with connecting members to fix the mounting parts 6, the docking part 5 and the water inlet parts 4 together; a sealing structure is provided at the docking points of the mounting parts 6, the water inlet parts 4 and the docking part 5, and the sealing effect of the connection is maintained by the sealing structure.

[0023] By optimizing the thickened pump head structure to improve overall strength and sealing performance, the plunger pump includes a pump body 1. The front end of the pump body 1 is integrally connected to a thickened pump head structure, which consists of three parts: a docking part 5, a mounting part 6, and a water inlet part 4. The docking part 5 serves as the main support structure of the thickened pump head, and its thickness is increased compared to traditional pump heads. It is directly and rigidly connected to the pump body 1 to transmit power. The mounting part 6 is located at the upper end of the docking part 5 and integrates pressure regulation and liquid output functions. The water inlet 4 is located at the lower end of the docking part 5 and is responsible for the intake of the liquid and the initial flow guidance. The three are fixed as a whole by the connecting structure on both sides to form a complete flow channel of water inlet-pressurization-output. The overall thickness is effectively increased compared with the traditional pump head, which solves the problem of high pressure deformation of the traditional pump head.

[0024] Please refer to Figure 1 and 2 The connecting part includes a mounting protrusion b12, a limiting part 11, and a mounting protrusion a10. The mounting protrusion b12 is fixedly disposed on one side of the mounting part 6, the limiting part 11 is fixedly connected to one side of the docking part 5, and the mounting protrusion a10 is fixedly connected to one side of the water inlet part 4. The mounting protrusion b12, the limiting part 11, and the water inlet part 4 are located on the same vertical plane and are arranged sequentially from top to bottom. The connecting part is a screw 13, which passes through the mounting protrusion b12, the limiting part 11, and the mounting protrusion a10 sequentially from bottom to bottom.

[0025] To ensure the stability of the thickened pump head structure under high pressure, the mounting part 6, the docking part 5, and the water inlet part 4 are rigidly fixed through multiple sets of connection structures.

[0026] Specifically, the two-sided connecting structure consists of a mounting protrusion b12, a limiting part 11, a mounting protrusion a10, and a screw 13. The mounting protrusion b12 is symmetrically fixed on both sides of the mounting part 6, the limiting part 11 is symmetrically fixed on both sides of the docking part 5, and the mounting protrusion a10 is symmetrically fixed on both sides of the water inlet part 4. The three are collinear in the vertical direction. The screw 13 passes through the mounting protrusion a10, the limiting part 11, and the mounting protrusion b12 from bottom to top and is then locked by a nut.

[0027] The limiting part 11 can limit the relative displacement of the three parts in the horizontal direction. Combined with the axial fastening of the screw 13, the mounting part 6, the docking part 5, and the water inlet part 4 form a rigid whole without gaps, avoiding the loosening problem caused by vibration in traditional bolt connections and improving the structure's anti-resonance ability.

[0028] Please refer to Figure 3 and 4 The upper end of the docking part 5 is provided with a plurality of upper docking protrusions 17, and the lower end of the docking part 5 is provided with a plurality of lower docking protrusions 24. Each lower docking protrusion 24 and the upper docking protrusion 17 are connected to the interior of the docking part 5. The upper end of the water inlet 4 is provided with a plurality of upper protrusions 19 that cooperate with the lower docking protrusions 24. The interior of each of the upper protrusions 19 is connected to the interior of the water inlet 4. A water inlet interface 9 is provided on one side of the water inlet 4. The lower end of the mounting component 6 is provided with several lower protrusions 20 that mate with the upper mating protrusions 17. Each lower protrusion 20 is connected to the interior of the mounting component 6. The sealing structure includes insertion grooves opened at the ends of the lower mating protrusions 24 and the upper mating protrusions 17. The inner end face of the insertion groove is provided with a groove 21, and a sealing ring 22 is provided inside the groove 21. An abutment ring 23 is fixedly connected to the end face of each upper protrusion 19 and lower protrusion 20.

[0029] To address the leakage problem at the connection points of traditional pump heads, sealing structures are incorporated at the connections between the mounting component 6 and the docking section 5, and between the water inlet component 4 and the docking section 5. Taking the connection between the water inlet component 4 and the docking section 5 as an example: the lower end of the docking section 5 has several lower docking protrusions 24, each with an insertion groove at its end. A groove 21 is formed on the inner end face of the insertion groove, and a fluororubber sealing ring 22 is embedded within the groove 21. The upper end of the water inlet component 4 has upper protrusions 19 corresponding to the lower docking protrusions 24, and a metal abutment ring 23 is fixed to the end face of each upper protrusion 19. During assembly, the upper protrusions 19 are inserted into the insertion groove, and the abutment ring 23 compresses the sealing ring 22, causing it to elastically deform and fill all microscopic gaps, forming a dual leak-proof structure of mechanical insertion + elastic sealing.

[0030] The upper end of the mounting component 6 is equipped with a pressure gauge 7, an air chamber 8 and a regulating valve 14 from left to right. A return water interface 15 is provided on one side of the lower end of the regulating valve 14. Several water outlet interfaces 16 are provided on the back of the mounting component 6, and a valve is installed on each water outlet interface 16. The pump body 1 has an internal cavity, through which a mounting shaft is installed. One end of the mounting shaft extends to the outside of the pump body 1 and is connected to a pulley 2. A cam is installed on the part of the shaft inside the pump body 1. The docking part 5 has several plunger chambers inside, and each plunger chamber is provided with a plunger component 18. The end of the cam component is driven by the shaft to engage with the end of the plunger component 18 at intervals.

[0031] Working principle: During operation, the motor drives the shaft inside the pump body 1 to rotate. The cam on the shaft pushes the plunger 18 to reciprocate in the plunger chamber of the docking part 5. During the process, the thickened docking part 5, the mounting part 6, the water inlet part 4 and the rigid connection structure ensure no deformation. The sealing structure achieves zero leakage through the compression of the abutment ring 23 and the sealing ring 22. The pressure gauge 7 and the regulating valve 14 work together to control the pressure.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plunger pump for a sprayer with a thickened pump head, comprising a pump body (1), characterized in that: The front end of the pump body (1) is provided with a thickened pump head structure. The thickened pump head structure includes a docking part (5) integrally connected to the pump body (1). The upper and lower ends of the docking part (5) are respectively provided with an installation part (6) and a water inlet part (4). The two sides of the installation part (6), the docking part (5) and the water inlet part (4) are provided with several connecting structures. The connecting structures are provided with connectors to fix the installation part (6), the docking part (5) and the water inlet part (4) together. The mounting component (6), the water inlet component (4), and the docking part (5) are all provided with a sealing structure to maintain the sealing effect of the connection.

2. The sprayer plunger pump with thickened pump head according to claim 1, characterized in that: The connecting part includes a mounting protrusion b (12), a limiting part (11), and a mounting protrusion a (10). The mounting protrusion b (12) is fixedly disposed on one side of the mounting part (6), the limiting part (11) is fixedly connected to one side of the docking part (5), and the mounting protrusion a (10) is fixedly connected to one side of the water inlet part (4). The mounting protrusion b (12), the limiting part (11), and the water inlet part (4) are located on the same vertical plane and are arranged sequentially from top to bottom.

3. The sprayer plunger pump with thickened pump head according to claim 2, characterized in that: The connector is a screw (13), which passes through the mounting protrusion b (12), the limiting part (11) and the mounting protrusion a (10) from bottom to bottom.

4. The sprayer plunger pump with thickened pump head according to claim 3, characterized in that: The upper end of the docking part (5) is provided with a plurality of upper docking protrusions (17), and the lower end of the docking part (5) is provided with a plurality of lower docking protrusions (24). Each of the lower docking protrusions (24) and the upper docking protrusions (17) are connected to the interior of the docking part (5).

5. The sprayer plunger pump with a thickened pump head according to claim 4, characterized in that: The upper end of the water inlet (4) is provided with several upper protrusions (19) that cooperate with the lower connecting protrusion (24). The interior of each of the upper protrusions (19) is connected to the interior of the water inlet (4). A water inlet interface (9) is provided on one side of the water inlet (4).

6. The sprayer plunger pump with a thickened pump head according to claim 5, characterized in that: The lower end of the mounting component (6) is provided with a plurality of lower protrusions (20) that mate with the upper mating protrusion (17), and each of the lower protrusions (20) is connected to the interior of the mounting component (6).

7. The sprayer plunger pump with a thickened pump head according to claim 6, characterized in that: The sealing structure includes insertion grooves opened at the ends of the lower mating protrusion (24) and the upper mating protrusion (17). The inner end face of the insertion groove is provided with a groove (21), and a sealing ring (22) is provided inside the groove (21). Each end face of the upper protrusion (19) and the lower protrusion (20) is fixedly connected with an abutment ring (23).

8. The sprayer plunger pump with thickened pump head according to claim 7, characterized in that: The upper end of the mounting component (6) is equipped with a pressure gauge (7), an air chamber (8) and a regulating valve (14) from left to right. A return water interface (15) is provided on one side of the lower end of the regulating valve (14). The back of the mounting component (6) is provided with a plurality of water outlets (16), and each water outlet (16) is equipped with a valve.

9. The sprayer plunger pump with thickened pump head according to claim 5, characterized in that: The pump body (1) has an internal cavity, through which a mounting shaft is installed. One end of the mounting shaft extends to the outside of the pump body (1) and is connected to a pulley (2). A cam is installed on the part of the shaft inside the pump body (1). The docking part (5) is provided with a number of plunger chambers, and each plunger chamber is provided with a plunger component (18). The end of the cam component is driven by the shaft to abut against the end of the plunger component (18) at intervals.

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