Novel stroke-adjustable reciprocating piston pump

Abstract

The utility model provides a novel stroke-adjustable reciprocating piston pump which comprises a mechanical box, L-shaped supporting legs are fixedly connected to the left side and the right side of the lower portion of the mechanical box respectively, and through holes are longitudinally formed in the front side and the rear side of the middle portion in the horizontal section of each L-shaped supporting leg respectively. The front part of the mechanical box is detachably and fixedly connected with a box cover; a piston cylinder is integrally connected to an opening in the middle of the left portion of the mechanical box, and a first one-way valve is fixedly connected to an opening in the middle left side of the front portion of the piston cylinder. A second one-way valve is fixedly connected to an opening in the middle of the left portion of the piston cylinder. A motor is fixedly connected to the middle of the rear portion of the mechanical box. Due to the arrangement of the rotating disc, the sliding block, the connecting shaft, the check block, the sleeve, the connecting rod, the reciprocating piston, the threaded rod, the annular gasket and the fastening nut, the effect of adjusting the stroke of the piston without disassembly is achieved, the adjusting efficiency can be effectively improved, and use is more convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of reciprocating piston pumps, and in particular relates to a novel adjustable stroke reciprocating piston pump. Background Technology

[0002] An adjustable stroke reciprocating piston pump is a pump body capable of adjusting the piston stroke. For example, an adjustable stroke reciprocating piston pump with announcement number CN220539829U includes a drive mechanism, a transmission assembly, and a piston assembly. The transmission assembly includes an output transmission wheel and a connecting rod. The drive mechanism can drive the output transmission wheel to rotate around the O-axis. The output transmission wheel has at least two first connecting parts on its side, each with a different distance from the O-axis. One end of the connecting rod has a second connecting part. However, this reciprocating piston pump has some problems in actual use. For example, when adjusting the piston stroke, the operator needs to disassemble and reassemble the rod connecting to the piston, which takes a long time, greatly reducing the adjustment efficiency of the reciprocating piston pump and making it inconvenient to use. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a novel adjustable stroke reciprocating piston pump, which enables piston stroke adjustment without disassembly, effectively improving adjustment efficiency and making it more convenient to use.

[0004] The technical solution is as follows: A novel adjustable stroke reciprocating piston pump includes a mechanical housing. L-shaped support legs are fixedly connected to the lower left and right sides of the mechanical housing, and through holes are longitudinally opened on the front and rear sides of the horizontal section of each L-shaped support leg. A housing cover is detachably and fixedly connected to the front of the mechanical housing. A piston cylinder is integrally connected to the opening in the middle left part of the mechanical housing, and a first one-way valve is fixedly connected to the opening in the middle left front part of the piston cylinder. A second one-way valve is fixedly connected to the opening in the middle left left part of the piston cylinder. An electric motor is fixedly connected to the middle rear part of the mechanical housing, and the front end of the motor's output shaft penetrates through the rear middle side of the mechanical housing. The key feature is that a non-removable adjustable piston structure is provided inside the mechanical housing, and the rear part of the non-removable adjustable piston structure is fixedly connected to the front end of the motor's output shaft. The non-removable adjustable piston structure is also sealed and slidably disposed inside the piston cylinder.

[0005] Preferably, the non-disassembly adjustable piston structure includes a rotating disk, with a groove on the left side of the interior of the rotating disk, and a slider slidably disposed inside the groove; a connecting shaft is integrally connected to the rear of the slider, and the connecting shaft is located on the rear side of the rotating disk; a stop block is fixedly connected to the rear end of the connecting shaft; a sleeve is slidably disposed on the outer wall of the connecting shaft, and a connecting rod is integrally connected to the left side of the sleeve, wherein a reciprocating piston is hinged to the left end of the connecting rod; a threaded rod is integrally connected to the middle of the front part of the slider, and an annular washer is sleeved on the outer wall of the threaded rod, wherein the annular washer is located on the front side of the rotating disk; fastening nuts are sequentially threaded from back to front on the outer wall of the threaded rod, and the fastening nuts on the rear side are located on the front side of the annular washer; the width of the slider is less than the thickness of the rotating disk.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0007] In this invention, the arrangement of the rotary disk, slider, connecting shaft, stop, sleeve, connecting rod, reciprocating piston, threaded rod, annular washer, and fastening nut facilitates the adjustment of piston stroke without disassembly, effectively improving adjustment efficiency and making it more convenient to use. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a partial cross-sectional view of the present invention.

[0010] Figure 3 This is a partial cross-sectional schematic diagram of the adjustable piston structure that does not require disassembly according to this utility model.

[0011] In the picture:

[0012] 1. Mechanical housing; 2. L-shaped support leg; 3. Housing cover; 4. Piston cylinder; 5. First check valve; 6. Second check valve; 7. Adjustable piston structure without disassembly; 70. Rotary disc; 71. Slider; 72. Connecting shaft; 73. Stop; 74. Sleeve; 75. Connecting rod; 76. Reciprocating piston; 77. Threaded rod; 78. Annular washer; 79. Fastening nut. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings, as shown below. Figure 1 and attached Figure 2As shown, a novel adjustable stroke reciprocating piston pump includes a mechanical housing 1. L-shaped support legs 2 are fixedly connected to the lower left and right sides of the mechanical housing 1, and through holes are longitudinally opened on the front and rear sides of the middle part of the horizontal section of the L-shaped support legs 2. A housing cover 3 is detachably fixedly connected to the front of the mechanical housing 1. A piston cylinder 4 is integrally connected to the opening in the middle left part of the mechanical housing 1, and a first one-way valve 5 is fixedly connected to the opening in the middle left front part of the piston cylinder 4. A second one-way valve 6 is fixedly connected to the opening in the middle left left part of the piston cylinder 4. An electric motor is fixedly connected to the middle rear part of the mechanical housing 1, and the front end of the output shaft of the electric motor passes through the middle and rear side of the interior of the mechanical housing 1.

[0014] One of the novel adjustable stroke reciprocating piston pumps also includes a non-disassembly adjustable piston structure 7, which is located inside the mechanical housing 1. The rear of the non-disassembly adjustable piston structure 7 is fixedly connected to the front end of the output shaft of the motor. The non-disassembly adjustable piston structure 7 is also sealed and slidably located inside the piston cylinder 4, which is conducive to achieving the effect of adjusting the piston stroke without disassembly, effectively improving the adjustment efficiency and making it more convenient to use.

[0015] In this implementation plan, in conjunction with the appendix Figure 3 As shown, the non-disassembly adjustable piston structure 7 includes a rotating disk 70. A groove is provided on the left side of the interior of the rotating disk 70, and a slider 71 is slidably disposed inside the groove. A connecting shaft 72 is integrally connected to the rear of the slider 71, and the connecting shaft 72 is located on the rear side of the rotating disk 70. A stop block 73 is fixedly connected to the rear end of the connecting shaft 72. A sleeve 74 is slidably disposed on the outer wall of the connecting shaft 72, and a connecting rod 75 is integrally connected to the left side of the sleeve 74. A reciprocating piston 76 is hinged to the left end of the connecting rod 75. A threaded rod 77 is integrally connected to the middle of the front part of the slider 71, and an annular washer 78 is sleeved on the outer wall of the threaded rod 77, and the annular washer 78 is located on the front side of the rotating disk 70. Fastening nuts 79 are threaded sequentially from back to front on the outer wall of the threaded rod 77, and the fastening nuts 79 on the rear side are located on the front side of the annular washer 78. The width of the slider 71 is smaller than the thickness of the rotating disk 70.

[0016] In this embodiment, specifically, the rear middle part of the rotating disk 70 is fixedly connected to the front end of the output shaft of the motor.

[0017] In this embodiment, specifically, the reciprocating piston 76 is sealed and slidably disposed inside the piston cylinder 4.

[0018] In this embodiment, specifically, the reciprocating piston 76 is located to the right of the first one-way valve 5.

[0019] In this embodiment, specifically, the first check valve 5 is a stainless steel check valve with the front end as the input end and the rear end as the output end.

[0020] In this embodiment, specifically, the second check valve 6 is a stainless steel check valve with the right end as the input end and the left end as the output end.

[0021] In this embodiment, specifically, the motor is electrically connected to the external control panel.

[0022] In this embodiment, when adjusting the piston stroke, the cover 3 is first removed, and then the fastening nut 79 is loosened using an external wrench so that the fastening nut 79 no longer provides tension to the threaded rod 77. At this time, the slider 71 can slide inside the groove. Then, the threaded rod 77 is pushed, causing the threaded rod 77 to drive the connecting shaft 72 to move to the left or right through the slider 71, thereby changing the distance between the axis of the connecting shaft 72 and the axis of the rotating disk 70, and thus changing the travel of the reciprocating piston 76. Compared with the prior art, this utility model only requires loosening the fastening nut 79 and pushing the threaded rod 77 with a wrench to adjust the travel of the reciprocating piston 76, without disassembly, thus saving a lot of assembly time and effectively improving the adjustment efficiency. It achieves the effect of adjusting the piston stroke without disassembly, making it more convenient to use.

[0023] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A novel adjustable stroke reciprocating piston pump, characterized in that: The novel adjustable stroke reciprocating piston pump comprises a mechanical box (1), wherein the left and right sides of the lower part of the mechanical box (1) are respectively fixedly connected with L-shaped support legs (2), and the front and rear sides of the middle part of the horizontal section of the L-shaped support legs (2) are respectively longitudinally opened with through holes; the front part of the mechanical box (1) is detachably fixedly connected with a box cover (3); the opening of the left middle part of the mechanical box (1) is integrally connected with a piston cylinder (4), and the opening of the left middle part of the front part of the piston cylinder (4) is fixedly connected with a first non-return valve (5); the opening of the left middle part of the piston cylinder (4) is fixedly connected with a second non-return valve (6); the middle part of the rear part of the mechanical box (1) is fixedly connected with an electric motor, and the front end of the output shaft of the electric motor passes through the middle and rear side of the interior of the mechanical box (1), and is characterized in that a non-disassembly adjustable piston structure (7) is arranged inside the mechanical box (1), and the rear part of the non-disassembly adjustable piston structure (7) is fixedly connected to the front end of the output shaft of the electric motor; the non-disassembly adjustable piston structure (7) is also sealingly and slidably arranged inside the piston cylinder (4).

2. The novel adjustable stroke reciprocating piston pump as claimed in claim 1, characterized in that: The disassembly-free adjustable piston structure (7) comprises a rotating disk (70), a slide groove is provided on the left side of the interior of the rotating disk (70), and a slider (71) is slidably provided inside the slide groove; a connecting shaft (72) is integrally connected to the rear of the slider (71), and the connecting shaft (72) is located on the rear side of the rotating disk (70); a stopper (73) is fixedly connected to the rear end of the connecting shaft (72); a sleeve (74) is slidably provided on the outer wall of the connecting shaft (72), and a connecting rod (75) is integrally connected to the left side of the middle of the sleeve (74), wherein the connecting shaft (72) is provided with a sleeve (74) on the outer wall of the connecting shaft (72), and a connecting rod (75) is integrally connected to the left side of the sleeve (74). The left end of the middle connecting rod (75) is hinged with a reciprocating piston (76); the front middle part of the slider (71) is integrally connected with a threaded rod (77), and an annular gasket (78) is sleeved on the outer wall of the threaded rod (77), wherein the annular gasket (78) is located on the front side of the rotating disk (70); the outer wall of the threaded rod (77) is threadedly connected with fastening nuts (79) in sequence from back to front, and the fastening nuts (79) on the rear side are located on the front side of the annular gasket (78); the width of the slider (71) is smaller than the thickness of the rotating disk (70).

3. The novel adjustable stroke reciprocating piston pump as claimed in claim 2, characterized in that: The rear middle part of the rotating disk (70) is fixedly connected to the front end of the output shaft of the motor.

4. The novel adjustable stroke reciprocating piston pump as claimed in claim 3 is characterized in that: The reciprocating piston (76) is sealingly and slidably arranged inside the piston cylinder (4).

5. The novel adjustable stroke reciprocating piston pump as claimed in claim 4, characterized in that: The reciprocating piston (76) is located on the right side of the first one-way valve (5).

6. The novel adjustable stroke reciprocating piston pump as claimed in claim 5, characterized in that: The first one-way valve (5) is a stainless steel one-way valve with a front end as an input end and a rear end as an output end.

7. The novel adjustable stroke reciprocating piston pump as claimed in claim 6, characterized in that: The second one-way valve (6) is a stainless steel one-way valve with the right end as the input end and the left end as the output end.

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