Dry rotation prevention protection device for self-priming pump

Abstract

The utility model provides a self-priming pump anti-dry rotation protection device, the self-priming pump comprises a motor (1), the motor (1) is provided with a pump body (2), the pump body (2) is provided with a pipeline, the pipeline is provided with a protection device (3), the protection device (3) is installed on the pipeline through a shell, and the shell comprises a lower shell (5) installed on the pipeline, an upper shell (4) is movably connected to the lower shell (5), a hollow cavity is formed after the upper shell (4) and the lower shell (5) are closed, and the protection device (3) is installed in the hollow cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to a protection device, in particular to a self priming pump dry running prevention protection device. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] In the prior art, the patent with the publication number CN213205994U discloses a dry running prevention corrosion-resistant centrifugal pump. It comprises a motor, a pump body, at least one protection device; the motor is power connected with the pump body; the output end of the pump body is connected with a manifold, and the manifold is connected with the protection device; the protection device is connected in series in the power supply circuit of the motor.

[0004] The above-mentioned device can well prevent the dry running of the self-priming pump during actual use, thereby protecting the structure of the body. However, after the self-priming pump is used for a long time, the elastic diaphragm may lose elasticity. When the elastic diaphragm is not replaced in time, the elastic diaphragm cannot normally control the elastic sheet to drive the insulating top block to move up and down, thereby realizing automatic power-off and conduction of the self-priming pump, and thus the self-priming pump cannot be prevented from dry running in the absence of water. However, the existing upper shell and lower shell are installed using a plurality of bolts. When the elastic diaphragm needs to be replaced, the disassembly is cumbersome and time-consuming.

[0005] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0006] The technical problem to be solved by the utility model is to provide a self-priming pump dry running prevention protection device in view of the deficiencies of the prior art.

[0007] In order to solve the above technical problems, the utility model discloses a self-priming pump dry running prevention protection device, the self-priming pump includes a motor, the motor is provided with a pump body, the pump body is provided with a pipeline, the pipeline is provided with a protection device, the protection device is installed on the pipeline through a shell, wherein the shell comprises:

[0008] A lower shell is installed on the pipeline, an upper shell is movably connected to the lower shell, the upper shell and the lower shell form a hollow cavity after being closed, and the protection device is installed in the hollow cavity.

[0009] Further, a locking mechanism and a deployment mechanism are installed on the lower shell, the deployment mechanism is rotatably connected to the upper shell, and the locking mechanism is locked after the upper shell and the lower shell are closed.

[0010] Further, the locking mechanism comprises:

[0011] The fixed block is installed on one side of the lower shell, the plug slot is formed in the bottom side wall of the plug slot, the clamping block is installed on the upper shell, the clamping through slot corresponding to the position of the plug slot is formed in the clamping block, and the moving box is slidably installed in the clamping through slot and the plug slot.

[0012] Further, the locking mechanism further comprises:

[0013] The driving mechanism and the reset mechanism; wherein,

[0014] The driving mechanism is used for driving the limiting block to stretch and retract;

[0015] The reset mechanism is used for resetting the moving box.

[0016] Further, the driving mechanism comprises:

[0017] The fixed plate is fixedly installed on the inner wall of the moving box, the through hole is formed in the fixed plate, the transmission rod is slidably connected with the fixed plate through the through hole, the bottom end of the transmission rod is fixedly arranged on the top surface of the connecting plate, the connecting plate is rotatably installed on the bottom surface of the connecting plate, the other end of the connecting rod is rotatably installed on the side, away from the limiting slot, of the limiting block, the driving block is fixedly arranged on the top end of the transmission rod, and the driving block is slidably arranged on the inner wall of the moving box.

[0018] Further, the first reset spring is sleeved on the transmission rod, and the two ends of the first reset spring are fixedly connected with the driving block and the fixed plate respectively.

[0019] Further, the reset mechanism comprises:

[0020] The two horizontal plates are respectively installed on the two sides of the top of the moving box, the second reset spring is fixedly arranged on the bottom of the horizontal plate, and the other end of the second reset spring is fixedly arranged on the clamping block.

[0021] Further, the side wall of the clamping through slot is provided with the sliding groove, the sliding block is slidably arranged in the sliding groove, and the sliding block is fixedly connected with the side wall of the moving box.

[0022] Further, the unfolding mechanism comprises:

[0023] The fixing plate is installed on the side, opposite to the locking mechanism, of the lower shell, the rotating slot is formed in the fixing plate, the rotating shaft is rotatably installed on the inner wall of the rotating slot, the movable plate is fixedly arranged on one end of the rotating shaft, and the movable plate is fixedly connected with the upper shell.

[0024] Further, a torsional spring is sleeved on the rotating shaft, one end of the torsional spring is fixed on the inner wall of the rotating groove, and the other end is fixed on the outer surface of the rotating shaft.

[0025] Advantages:

[0026] 1. The utility model discloses a mobile box, limiting block, drive block, first reset spring, adapter rod, cross plate, second reset spring, sliding groove and sliding block are set up, when the upper shell is combined on the lower shell, only need to use the second reset spring to drive the mobile box to be inserted into the insertion slot on the T-shaped block, then use the elastic force of first reset spring to drive the limiting block to be inserted into the limiting slot on the T-shaped block, can conveniently and quickly stably fix the upper shell on the lower shell and use, and when needing to open, only need to press the drive block to drive the limiting block to separate from the limiting slot, can quickly open the upper shell from the lower shell, thereby can conveniently and quickly replace the elastic diaphragm, avoid the traditional use bolt fixed, not only dismounting is complicated, and waste time.

[0027] 2. The utility model discloses a solidification board, rotating shaft, movable plate and torsional spring are set up, after the removal of the limitation on the upper shell, the elastic recovery force of torsional spring is used to drive movable plate rotation, thereby can conveniently drive the upper shell rotation on the solidification board, and can conveniently make the upper shell quickly separate from the lower shell. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or other aspects of the present utility model will become more apparent by describing in detail the present utility model with reference to the attached drawings and specific embodiments.

[0029] Figure 1 It is the main body structure schematic diagram of the utility model.

[0030] Figure 2 It is the connecting structure schematic diagram of the protection device, upper shell and lower shell of the utility model.

[0031] Figure 3 It is the internal structure schematic diagram of the fixed block and T-shaped block of the utility model.

[0032] Figure 4 It is the connecting structure schematic diagram of the rotating shaft, movable plate and torsional spring of the utility model.

[0033] In the figure: 1 is motor; 2 is pump body; 3 is protection device; 4 is upper shell; 5 is lower shell; 6 is fixed block; 61 is clamping block; 62 is moving box; 63 is plug-in slot; 64 is limiting block; 65 is limiting slot; 7 is fixed plate; 71 is transmission rod; 72 is connecting plate; 73 is adapter rod; 74 is driving block; 75 is first return spring; 8 is cross plate; 81 is second return spring; 82 is sliding groove; 83 is sliding block; 9 is retaining plate; 91 is rotating groove; 92 is rotating shaft; 93 is movable plate; 94 is torsional spring. DETAILED DESCRIPTION

[0034] The utility model proposes a kind of self-priming pump dry-running prevention protection device, including motor 1, the motor 1 is equipped with pump body 2, pump body 2 is equipped with pipeline, protection device 3 is installed on pipeline;

[0035] Protection device 3 is installed on pipeline by easily detachable shell, wherein, easily detachable shell includes: lower shell 5 is installed on pipeline, upper shell is equipped on lower shell 5.

[0036] Locking mechanism and unfolding mechanism are installed on the lower shell 5, the locking mechanism and unfolding mechanism are installed on the upper shell 4, the locking mechanism is installed with driving mechanism and reset mechanism.

[0037] The locking mechanism includes fixed block 6, fixed block 6 is installed on lower shell 5, plug-in slot 63 is opened in fixed block 6, clamping block 61 is installed on the upper shell 4, through slot corresponding to plug-in slot 63 is opened in the middle of clamping block 61, limiting block 64 is slidably installed on the bottom side of moving box 62, limiting slot 65 is opened in the inner wall of one side of plug-in slot 63, and limiting block 64 is movably clamped on the inner wall of limiting slot 65.

[0038] The driving mechanism includes fixed plate 7, fixed plate 7 is installed on the inner wall of moving box 62, transmission rod 71 is slidably installed on the fixed plate 7, connecting plate 72 is installed on the bottom side of transmission rod 71, adapter rod 73 is rotatably installed on connecting plate 72, the other end of adapter rod 73 is rotatably installed on limiting block 64, driving block 74 is installed on the top end of transmission rod 71, and driving block 74 is slidably installed on the inner wall of moving box 62;First return spring 75 is sleeved on transmission rod 71, one end of first return spring 75 is installed on driving block 74, and the other end of first return spring 75 is installed on fixed plate 7.

[0039] The reset mechanism includes two cross plates 8, two cross plates 8 are installed on the two sides of moving box 62 respectively, second return spring 81 is installed on the two cross plates 8, and the other end of the two second return springs 81 is installed on clamping block 61.

[0040] Two sliding grooves 82 are formed on the clamping block 61, and sliding blocks 83 are slidably installed on the inner walls of the two sliding grooves 82.

[0041] The expansion mechanism comprises a retaining plate 9 installed on the lower shell 5, two rotating grooves 91 are formed on the retaining plate 9, rotating shafts 92 are rotatably installed on the inner walls of the two rotating grooves 91, and a movable plate 93 is installed on the side of the two rotating shafts 92 close to each other, and the movable plate 93 is installed on the upper shell 4.

[0042] A torsional spring 94 is sleeved on the rotating shaft 92, one end of the torsional spring 94 is installed on the inner wall of the rotating groove 91, and the other end of the torsional spring 94 is installed on the outer surface of the rotating shaft 92.

[0043] Embodiment 1:

[0044] The utility model provides a kind of technical scheme: a self-priming pump dry-running protection device, as shown in Figure 1 The utility model discloses a self-priming pump dry-running protection device, as shown in

[0045] The protection device 3 comprises a lower shell 5 installed on the pipeline, and an upper shell is arranged on the lower shell 5.

[0046] As shown in Figure 2 The protection device 3 comprises a lower shell 5 installed on the pipeline, and an upper shell is arranged on the lower shell 5.

[0047] As shown in Figure 3 The lower shell 5 is provided with a plug-in groove 63, the upper shell 4 is provided with a clamping block 61, the clamping block 61 is slidably installed with a moving box 62, the bottom side of the moving box 62 is slidably installed with a limiting block 64, the inner wall of one side of the plug-in groove 63 is provided with a limiting groove 65, and the limiting block 64 is movably installed on the inner wall of the limiting groove 65.

[0048] In order to provide power for the movement of the limiting block 64, a driving mechanism is arranged on the inner wall of the moving box 62, which specifically comprises a fixed plate 7 installed on the inner wall of the moving box 62, a transmission rod 71 slidingly installed on the fixed plate 7, a connecting plate 72 installed on the bottom side of the transmission rod 71, a transfer rod 73 rotatably installed on the connecting plate 72, the other end of the transfer rod 73 rotatably installed on the limiting block 64, a driving block 74 installed on the top end of the transmission rod 71, the driving block 74 slidingly installed on the inner wall of the moving box 62, a first reset spring 75 sleeved on the transmission rod 71, one end of the first reset spring 75 installed on the driving block 74, the other end of the first reset spring 75 installed on the fixed plate 7, when separating the upper shell 4 from the lower shell 5, only need to manually press the driving block 74, using the driving block 74 to drive the first reset spring 75 to compress, at the same time, the driving block 74 drives the transmission rod 71 on the fixed plate 7 to move downward, the transmission rod 71 drives the connecting plate 72 to move downward, the connecting plate 72 drives the transfer rod 73 to rotate counterclockwise, so that the limiting block 64 can be conveniently separated from the limiting groove 65.

[0049] In order to separate the moving box 62 from the plug-in slot 63, a reset mechanism is arranged on the moving box 62, which specifically comprises two cross plates 8 installed on the two sides of the moving box 62, respectively, a second reset spring 81 installed on each of the two cross plates 8, the other end of the two second reset springs 81 installed on the clamping block 61, two sliding grooves 82 opened on the clamping block 61, a sliding block 83 slidingly installed on the inner wall of each of the two sliding grooves 82, the two sliding blocks 83 installed on the two sides of the moving box 62, respectively, after the limiting block 64 is separated from the limiting groove 65, only need to manually pull the moving box 62 upward, the moving box 62 can be quickly separated from the plug-in slot 63, at this time, the second reset spring 81 is in a stretched state, which is convenient for the next time the upper shell 4 is fixed on the lower shell 5 for use.

[0050] In order to automatically open the upper shell 4 from the lower shell 5, an unfolding mechanism is arranged on the lower shell 5, which specifically comprises a retaining plate 9 installed on the lower shell 5, as shown in Figure 4As shown, the retaining plate 9 is provided with two rotating grooves 91, the inner walls of the two rotating grooves 91 are both provided with rotating shafts 92, the side of the two rotating shafts 92 close to each other is provided with a movable plate 93, the movable plate 93 is installed on the upper shell 4, the rotating shaft 92 is sleeved with a torsional spring 94, one end of the torsional spring 94 is installed on the inner wall of the rotating groove 91, the other end of the torsional spring 94 is installed on the outer surface of the rotating shaft 92, when the upper shell 4 is folded on the lower shell 5, the movable plate 93 drives the torsional spring 94 on the rotating shaft 92 to deform, the limiting block 64 is separated from the limiting groove 65, one end of the upper shell 4 loses the limitation, at this time, under the driving of the elastic restoring force of the torsional spring 94, the torsional spring 94 drives the movable plate 93 to rotate, the movable plate 93 drives the upper shell 4 to automatically separate from the lower shell 5, so that the elastic diaphragm in the lower shell 5 is convenient to replace, and the remaining features are the same as those in embodiment 1.

[0051] The working principle is that when it is needed to fix the upper shell 4 on the lower shell 5, the clamping block 61 on the upper shell 4 is combined on the fixed block 6, at this time, the movable plate 93 on the upper shell 4 drives the rotating shaft 92 in the rotating groove 91 on the retaining plate 9 to rotate, the rotating shaft 92 drives the torsional spring 94 to deform, then the elastic restoring force of the second reset spring 81 on the horizontal plate 8 drives the horizontal plate 8 to move downwards, the horizontal plate 8 drives the moving box 62 to be quickly inserted into the insertion groove 63 on the fixed block 6, when the horizontal plate 8 drives the moving box 62 to move downwards, when the moving box 62 is completely inserted into the bottom side of the insertion groove 63, the limiting block 64 in the moving box 62 coincides with the limiting groove 65 on the fixed block 6, at this time, the elastic restoring force of the first reset spring 75 drives the transmission rod 71 to move downwards, the transmission rod 71 drives the connecting plate 72 to move, the connecting plate 72 drives the adapter rod 73 to rotate clockwise, the adapter rod 73 drives the limiting block 64 to move to the left side, so that the limiting block 64 can be quickly inserted into the limiting groove 65, and then the upper shell 4 can be conveniently fixed on the lower shell 5.

[0052] The utility model provides a kind of self-priming pump dry running protection device's thought and method, the method and approach of specifically realizing this technical scheme are many, above-mentioned only is the preferred implementation mode of the utility model, it should be pointed out, for the ordinary skilled person in the art, without departing from the principle of the utility model, can make several improvements and refinements under the premise, these improvements and refinements also should be regarded as the protection scope of the utility model. The components not explicitly in the embodiment can be realized by prior art.

Claims

1. A dry-running prevention device for a self-priming pump, the self-priming pump comprising a motor (1), the motor (1) being provided with a pump body (2), the pump body (2) being provided with a pipe, the pipe being provided with the dry-running prevention device (3), characterized in that, The protection device (3) is mounted on the pipeline through a shell, wherein the shell comprises: A lower shell (5) mounted on the pipeline, an upper shell (4) movably connected to the lower shell (5), the upper shell (4) and the lower shell (5) form a hollow cavity after being closed, and the protection device (3) is mounted in the hollow cavity.

2. A device for preventing dry-running of a self-priming pump according to claim 1, characterized in that A locking mechanism and a deployment mechanism are mounted on the lower shell (5), the deployment mechanism is rotatably connected to the upper shell (4), and the locking mechanism is locked after the upper shell (4) and the lower shell (5) are closed.

3. A device for preventing dry-running of a self-priming pump according to claim 2, characterized in that The locking mechanism comprises: A fixed block (6) mounted on one side of the lower shell (5), an insertion slot (63) is formed in the fixed block (6), a limiting slot (65) is formed in the bottom side wall of the insertion slot (63), a clamping block (61) is mounted on the upper shell (4), a clamping through slot corresponding to the position of the insertion slot (63) is formed in the clamping block (61), a moving box (62) is slidably mounted in the clamping through slot and the insertion slot (63), a limiting block (64) is slidably arranged on the bottom side of the moving box (62), and the limiting block (64) is clamped and engaged with the limiting slot (65).

4. A device for preventing dry-running of a self-priming pump according to claim 3, characterized in that The locking mechanism further comprises: A driving mechanism and a reset mechanism; wherein The driving mechanism is used to drive the limiting block (64) to extend and retract; The reset mechanism is used to reset the moving box (62).

5. A device for preventing dry-running of a self-priming pump according to claim 4, characterized in that The driving mechanism comprises: A fixed plate (7) fixedly mounted on the inner wall of the moving box (62), the fixed plate (7) is provided with a through hole, a transmission rod (71) is slidably connected with the fixed plate (7) through the through hole, the bottom end of the transmission rod (71) is fixedly arranged on the top surface of a connecting plate (72), the bottom surface of the connecting plate (72) is rotatably mounted with a transfer rod (73), the other end of the transfer rod (73) is rotatably mounted on the limiting block (64) away from the limiting slot (65), the top end of the transmission rod (71) is fixedly arranged with a driving block (74), and the driving block (74) is slidably arranged on the inner wall of the moving box (62).

6. A device for preventing dry-running of a self-priming pump according to claim 5, characterized in that A first reset spring (75) is sleeved on the transmission rod (71), and the two ends of the first reset spring (75) are fixedly connected with the driving block (74) and the fixed plate (7), respectively.

7. A device for preventing dry-running of a self-priming pump according to claim 4, characterized in that The reset mechanism comprises: Two horizontal plates (8) mounted on the top of the moving box (62) on both sides, respectively, a second reset spring (81) is fixedly arranged on the bottom of the horizontal plate (8), and the other end of the second reset spring (81) is fixedly arranged on the clamping block (61).

8. A device for preventing dry-running of a self-priming pump according to claim 7, characterized in that A sliding groove (82) is formed in the side wall of the clamping through slot, respectively, a sliding block (83) is slidably arranged in the sliding groove (82), and the sliding block (83) is fixedly connected with the side wall of the moving box (62).

9. A device for preventing dry-running of a self-priming pump according to claim 2, characterized in that The deployment mechanism comprises: The retaining plate (9) is installed on the side opposite to the locking mechanism of the lower shell (5), a rotating groove (91) is formed in the retaining plate (9), a rotating shaft (92) is rotatably installed on the inner wall of the rotating groove (91), and a movable plate (93) is fixedly arranged at one end of the rotating shaft (92), and the movable plate (93) is fixedly connected with the upper shell (4).

10. A device for preventing dry-running of a self-priming pump according to claim 9, characterized in that A torsional spring (94) is sleeved on the rotating shaft (92), one end of the torsional spring (94) is fixedly arranged on the inner wall of the rotating groove (91), and the other end is fixedly arranged on the outer surface of the rotating shaft (92).

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