Pump head with filter screen blockage early warning structure

Abstract

The pump head with the filter screen blocking early warning structure comprises a pump head body and a filter screen, a mounting hole is formed in one side of a water outlet of the pump head, a mounting cylinder is arranged at the position, corresponding to the mounting hole, of the outer surface of the water outlet of the pump head, the inner diameter of the mounting cylinder is larger than the diameter of the mounting hole, and a sealing assembly is arranged in the mounting cylinder; a cap is detachably mounted at one end of the mounting cylinder, an elastic part is arranged between the sealing assembly and the cap, a pressure sensor is arranged on the cap, a buzzer is arranged outside the mounting cylinder, and the pressure sensor is in control connection with the buzzer; in an initial state, the sealing assembly seals the mounting hole; and when the pressure in the water outlet of the pump head rises and exceeds a set value, the sealing assembly is far away from the mounting hole and triggers the pressure sensor. Whether the filter screen is blocked or not is judged by monitoring the pressure change of the water outlet, an alarm sound is given out through the buzzer for early warning when blockage occurs, and the problem that the applicability of the filter screen is affected due to the fact that an early warning mechanism is not sensitive or accurate enough under different working conditions is solved.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a pump head with a filter clogging early warning structure. Background Art

[0002] The plunger pump is a key component in hydraulic systems. It relies on the reciprocating motion of the plunger within the cylinder, causing the volume of the sealed working chamber to change, thereby absorbing and pressing water. Plunger pumps offer advantages such as high rated pressure, compact structure, high efficiency, and easy flow regulation. They are widely used in applications requiring high pressure, high flow, and where flow regulation is required, such as hydraulic presses, construction machinery, and ships.

[0003] In the related art, the Chinese patent application number CN202420317265.3 proposes a pump head with a filter blockage warning structure, including a pump head body with a water inlet and a water outlet, a docking joint, a filter and an early warning mechanism. The early warning mechanism includes a driving member and an early warning hole. The driving member is used to drive the filter to always abut against the tail end within the normal blockage range. The early warning hole is opened through the inner wall of the water inlet. When the filter is within the normal blockage range, the filter blocks the early warning hole. When the filter exceeds the normal blockage range, the filter moves toward the side away from the docking joint to the side away from the early warning hole. When the filter gradually becomes clogged, the water flow pressure gradually increases, gradually pushing the filter toward the side away from the docking joint. When the filter is pushed to a certain extent, the early warning hole is exposed, and the water flows out of the docking joint along the early warning hole, which has an early warning effect, so that the operator knows that the filter is clogged.

[0004] The above-mentioned related technologies have the following defects: under different working conditions, fluctuations in water flow may cause unstable movement of the filter, which may result in false alarms or missed alarms. In addition, different types of liquids and their viscosities and particle contents vary greatly, which may cause the early warning mechanism to be not sensitive or accurate enough in some cases, affecting its applicability. Utility Model Content

[0005] In order to improve the problem that the early warning mechanism is not sensitive or accurate enough under different working conditions, which affects its applicability, the present application provides a pump head with a filter clogging early warning structure.

[0006] The present application provides a pump head with a filter clogging warning structure that adopts the following technical solutions:

[0007] A pump head with a filter clogging early warning structure, comprising a pump head body with a water inlet and a water outlet and a filter arranged at the water inlet of the pump head, characterized in that a mounting hole is opened on one side of the water outlet of the pump head, a mounting cylinder is provided on the outer surface of the water outlet of the pump head corresponding to the mounting hole, the inner diameter of the mounting cylinder is larger than the diameter of the mounting hole, a sealing assembly for closing the mounting hole is provided in the mounting cylinder, a cap is detachably installed on one end of the mounting cylinder away from the mounting hole, an elastic member for driving the sealing assembly to seal the mounting hole is provided between the sealing assembly and the cap, a pressure sensor is provided on the cap, a buzzer is provided outside the mounting cylinder, and the pressure sensor and the buzzer are controllably connected;

[0008] In an initial state, the sealing assembly closes the mounting hole; when the pressure in the water outlet of the pump head increases and exceeds a set value, the sealing assembly moves away from the mounting hole and triggers the pressure sensor.

[0009] Furthermore, the sealing assembly includes a valve flap, a connecting block and a valve seat. The valve flap is fitted into the mounting hole and the connecting block is fixedly connected to one end of the valve flap close to the mounting cylinder. The valve seat is provided at the water outlet of the pump head corresponding to the connecting block; when the valve flap closes the mounting hole, the connecting block fits against the valve seat.

[0010] Furthermore, a sealing ring is provided between the connecting block and the valve seat.

[0011] Furthermore, a telescopic rod is provided between the connecting block and the cover cap, and the elastic member is sleeved outside the telescopic rod.

[0012] Furthermore, the cap is threadedly connected to the mounting tube and a slot is provided at one end of the cap close to the mounting tube. One end of the telescopic rod is fixedly connected to the connecting block and the other end is inserted into the slot.

[0013] Furthermore, a pressure relief port is provided at one end of the mounting tube close to the cap.

[0014] Furthermore, a drain pipe is provided on the outer sleeve of the pressure relief port, and a collection bucket is provided on the other end of the drain pipe.

[0015] In summary, the beneficial technical effects of this application are:

[0016] In the initial state, the sealing assembly tightly closes the mounting hole under the action of the elastic member, ensuring the sealing of the pump head water outlet, and the pressure sensor and buzzer are in standby mode; when the filter is clogged, the flow rate at the pump head water inlet decreases, while the pressure at the water outlet gradually increases. As the pressure in the water outlet increases, the pressure on the elastic member gradually increases. When the pressure exceeds the set value, the sealing assembly is pushed away from the mounting hole and the elastic member is deformed. As the sealing assembly moves away from the mounting hole, the pressure sensor set on the cap is triggered. When the pressure sensor detects the pressure change and exceeds the set threshold, it immediately sends a signal to the buzzer. After receiving the signal, the buzzer sounds an alarm, notifying the operator that the filter is clogged and needs to be cleaned in time. This effectively improves the working efficiency and reliability of the pump head, reduces failures and downtime caused by filter blockage, and improves the problem that the early warning mechanism is not sensitive or accurate enough under different working conditions, affecting its applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0018] Figure 2 It is a top view of an embodiment of the present application;

[0019] Figure 3 It is along Figure 2 Partial cross-sectional view along line AA.

[0020] Explanation of the accompanying symbols: 1. Pump head; 2. Water inlet; 21. Filter; 3. Water outlet; 31. Mounting hole; 32. Mounting cylinder; 321. Buzzer; 33. Cap; 331. Pressure sensor; 332. Slot; 34. Elastic part; 4. Valve disc; 41. Connecting block; 411. Sealing ring; 412. Telescopic rod; 42. Valve seat; 5. Pressure relief port; 51. Drain pipe; 6. Collection bucket. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0022] The embodiment of the present application discloses a pump head with a filter blockage warning structure. Figures 1 to 3A pump head with a filter clogging warning structure includes a pump head 1 body with a water inlet 2 and a water outlet 3 and a filter 21 arranged at the water inlet 2 of the pump head 1. A mounting hole 31 is opened on one side of the water outlet 3 of the pump head 1, and a mounting cylinder 32 is provided on the outer surface of the water outlet 3 of the pump head 1 corresponding to the mounting hole 31. The inner diameter of the mounting cylinder 32 is larger than the diameter of the mounting hole 31. A sealing assembly for closing the mounting hole 31 is provided in the mounting cylinder 32, and a cap 33 is detachably installed at one end of the mounting cylinder 32 away from the mounting hole 31. An elastic member 34 for driving the sealing assembly to seal the mounting hole 31 is provided between the sealing assembly and the cap 33, and a pressure sensor 331 is provided on the cap 33. A buzzer 321 is provided outside the mounting cylinder 32, and the pressure sensor 331 and the buzzer 321 are control-connected; specifically, the elastic member 34 is configured as a spring covering the outer periphery of the pressure sensor 331.

[0023] In the initial state, the sealing assembly closes the mounting hole 31 ; when the pressure in the water outlet 3 of the pump head 1 increases and exceeds a set value, the sealing assembly moves away from the mounting hole 31 and triggers the pressure sensor 331 .

[0024] In this way, in the initial state, the sealing assembly tightly seals the mounting hole 31 under the action of the elastic member 34, ensuring the sealing of the water outlet 3 of the pump head 1, and the pressure sensor 331 and the buzzer 321 are in a standby state. When the filter 21 becomes clogged, the flow rate of the water inlet 2 of the pump head 1 decreases, while the pressure at the water outlet 3 gradually increases. As the pressure in the water outlet 3 increases, the pressure on the elastic member 34 gradually increases. When the pressure exceeds the set value, the sealing assembly is pushed away from the mounting hole 31, causing the elastic member 34 to deform. As the sealing assembly moves away from the mounting hole 31, the pressure sensor 331 provided on the cap is triggered. When the pressure sensor 331 detects the pressure change and exceeds the set threshold, it immediately sends a signal to the buzzer 321. After receiving the signal, the buzzer 321 emits an alarm to inform the operator that the filter 21 is clogged and needs to be cleaned promptly. This effectively improves the working efficiency and reliability of the pump head 1, reduces failures and downtime caused by filter 21 blockage, and improves the problem that the early warning mechanism is not sensitive or accurate enough under different working conditions, which affects its applicability.

[0025] Specifically, refer to Figures 1 to 3 The sealing assembly includes a valve disc 4, a connecting block 41 and a valve seat 42. The valve disc 4 is fitted into the mounting hole 31 and the end of the valve disc 4 close to the mounting cylinder 32 is fixedly connected to the connecting block 41. The valve seat 42 is provided at the water outlet 3 of the pump head 1 corresponding to the connecting block 41; when the valve disc 4 closes the mounting hole 31, the connecting block 41 fits against the valve seat 42.

[0026] In this way, when the pump head 1 is operating normally and the filter screen 21 is unobstructed, the valve flap 4, under the action of the elastic member 34, tightly seals the mounting hole 31, and the connecting block 41 fits tightly against the valve seat 42, ensuring the tightness of the water outlet 3 of the pump head 1. At this time, the pressure at the water outlet 3 of the pump head 1 remains within the normal range, and the pressure sensor 331 and the buzzer 321 are both in standby mode. When the filter screen 21 becomes clogged, the flow rate at the water inlet 2 of the pump head 1 decreases, while the pressure at the water outlet 3 gradually increases. As the pressure within the water outlet 3 increases, the pressure on the elastic member 34 gradually increases. When the pressure exceeds the set value, the elastic member 34 deforms, pushing the valve flap 4 and the connecting block 41 together, gradually moving the valve flap 4 away from the mounting hole 31. Through the coordinated action of the valve flap 4, the connecting block 41, and the valve seat 42, sensitive monitoring and timely warning of pressure changes at the water outlet 3 of the pump head 1 are achieved. This design not only improves the operating efficiency and reliability of the pump head 1, but also reduces failures and downtime caused by the blockage of the filter screen 21.

[0027] And refer to Figure 2 and Figure 3 A sealing ring 411 is provided between the connecting block 41 and the valve seat 42, which further enhances the sealing performance and ensures the sealing and reliability of the water outlet 3 of the pump head 1.

[0028] And, refer to Figure 2 and Figure 3 A telescopic rod 412 is provided between the connecting block 41 and the cap 33, and the elastic member 34 is sleeved outside the telescopic rod 412, which can not only enhance the structural stability and sealing performance of the pump head 1, but also improve the durability of the pump head 1 and reduce maintenance costs.

[0029] Further, refer to Figure 2 and Figure 3 The cap 33 is threadedly connected to the mounting tube 32 and a slot 332 is provided at one end of the cap 33 close to the mounting tube 32. One end of the telescopic rod 412 is fixedly connected to the connecting block 41, and the other end is inserted into the slot 332. This connection method has self-locking properties and can effectively prevent loosening or falling off due to vibration or other factors during use. At the same time, the threaded connection is also convenient for disassembly and installation, which facilitates subsequent maintenance and replacement work. One end of the telescopic rod 412 is fixedly connected to the connecting block 41, and the other end is inserted into the slot 332 of the cap 33. This plug-in method allows the telescopic rod 412 to have a certain degree of flexibility while ensuring structural stability. When the internal pressure of the pump head 1 changes, the telescopic rod 412 can be extended and retracted in the slot 332 to adapt to the change in pressure and maintain sealing performance.

[0030] At the same time, refer to Figure 2 and Figure 3A pressure relief port 5 is provided at one end of the mounting tube 32 close to the cap 33, which can effectively deal with the excessive pressure that may occur inside the pump head 1 and protect the safe operation of the pump head 1 and related equipment.

[0031] In addition, refer to Figure 2 and Figure 3 A drain pipe 51 is provided on the outer sleeve of the pressure relief port 5, and a collection bucket 6 is provided at the other end of the drain pipe 51. The drain pipe 51 serves as an extension of the pressure relief port 5, ensuring that the released fluid can flow smoothly to the collection bucket 6, avoiding the fluid from being directly sprayed into the environment or flowing back into the pump head 1 to cause secondary damage. At the same time, by setting up the collection bucket 6, the released fluid can be collected together for subsequent processing or recycling.

[0032] The implementation principle of the pump head 1 with a filter 21 clogging warning structure in the embodiment of the present application is as follows:

[0033] In the initial state, the sealing assembly, under the action of the elastic member 34, tightly seals the mounting hole 31, ensuring the tightness of the water outlet 3 of the pump head 1. The pressure sensor 331 and the buzzer 321 are in a standby state. When the filter 21 becomes clogged, the flow rate at the water inlet 2 of the pump head 1 decreases, while the pressure at the water outlet 3 gradually increases. As the pressure in the water outlet 3 increases, the pressure on the elastic member 34 gradually increases. When the pressure exceeds a set value, the sealing assembly is pushed away from the mounting hole 31, causing the elastic member 34 to deform. As the sealing assembly moves away from the mounting hole 31, the pressure sensor 331 provided on the cap is triggered. When the pressure sensor 331 detects a pressure change that exceeds a set threshold, it immediately sends a signal to the buzzer 321. Upon receiving the signal, the buzzer 321 sounds an alarm, notifying the operator that the filter 21 is clogged and needs to be cleaned promptly. This effectively improves the operating efficiency and reliability of the pump head 1, reduces failures and downtime caused by filter 21 blockage, and improves the problem that the early warning mechanism is not sensitive or accurate enough under different working conditions, which affects its applicability.

[0034] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pump head with a filter clogging warning structure, comprising a pump head (1) body with a water inlet (2) and a water outlet (3) and a filter (21) arranged at the water inlet (2) of the pump head (1), characterized in that: A mounting hole (31) is provided on one side of the water outlet (3) of the pump head (1); a mounting cylinder (32) is provided on the outer surface of the water outlet (3) of the pump head (1) corresponding to the mounting hole (31); the inner diameter of the mounting cylinder (32) is larger than the diameter of the mounting hole (31); a sealing assembly for closing the mounting hole (31) is provided in the mounting cylinder (32); a cap (33) is detachably installed at one end of the mounting cylinder (32) away from the mounting hole (31); an elastic member (34) for driving the sealing assembly to seal the mounting hole (31) is provided between the sealing assembly and the cap (33); a pressure sensor (331) is provided on the cap (33); a buzzer (321) is provided outside the mounting cylinder (32); and the pressure sensor (331) and the buzzer (321) are control-connected; In the initial state, the sealing component closes the mounting hole (31); when the pressure in the water outlet (3) of the pump head (1) increases and exceeds a set value, the sealing component moves away from the mounting hole (31) and triggers the pressure sensor (331).

2. A pump head (1) with a filter (21) clogging warning structure according to claim 1, characterized in that: The sealing assembly comprises a valve flap (4), a connecting block (41) and a valve seat (42); the valve flap (4) is fitted into the mounting hole (31) and one end of the valve flap (4) close to the mounting cylinder (32) is fixedly connected to the connecting block (41); the valve seat (42) is provided at the water outlet (3) of the pump head (1) corresponding to the connecting block (41); when the valve flap (4) closes the mounting hole (31), the connecting block (41) and the valve seat (42) are in contact.

3. A pump head (1) with a filter (21) clogging warning structure according to claim 2, characterized in that: A sealing ring (411) is provided between the connecting block (41) and the valve seat (42).

4. A pump head (1) with a filter (21) clogging warning structure according to claim 2, characterized in that: A telescopic rod (412) is provided between the connecting block (41) and the cover cap (33), and the elastic member (34) is sleeved outside the telescopic rod (412).

5. A pump head (1) with a filter (21) clogging warning structure according to claim 4, characterized in that: The cap (33) is threadedly connected to the mounting tube (32), and a slot (332) is provided at one end of the cap (33) close to the mounting tube (32). One end of the telescopic rod (412) is fixedly connected to the connecting block (41), and the other end is inserted into the slot (332).

6. A pump head (1) with a filter (21) clogging warning structure according to claim 5, characterized in that: A pressure relief port (5) is provided at one end of the mounting tube (32) close to the cover cap (33).

7. A pump head (1) with a filter (21) clogging warning structure according to claim 6, characterized in that: The pressure relief port (5) is provided with a drainage pipe (51) on its outer sleeve, and a collection bucket (6) is provided at the other end of the drainage pipe (51).

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