Adjustable reciprocating displacement pump

Abstract

The invention discloses an adjustable reciprocating positive displacement pump, which belongs to the field of reciprocating pumps and comprises a base, a pump body is fixedly mounted on the base, a pump cavity is arranged on the pump body, and a piston is slidably mounted in the pump cavity. According to the scheme, through cooperation of the threaded rod and the threaded cylinder, the position of the push plate can be changed, the position of the adjusting plate can be changed when liquid is discharged, then the communication volume of the adjusting cavity and the pump cavity is changed, the adjusting plate can be driven to get close to the piston direction when the pump cavity sucks the liquid under negative pressure, and then the pump cavity and the adjusting cavity are not communicated any more; when the liquid is discharged from the pump cavity, the adjusting plate is driven to reset and is attached to the push plate, that is, the discharge amount of the pump cavity is the volume obtained after the volume of the adjusting cavity communicated with the pump cavity is subtracted from the liquid amount sucked by the pump cavity at the moment, and that is, the flow can be adjusted by rotating the threaded cylinder; therefore, the displacement pump does not need to be closed for adjustment, and the effect of improving the working efficiency of the displacement pump is achieved.

Description

Technical Field

[0001] The present invention relates to the field of reciprocating pumps, and more particularly to an adjustable reciprocating positive displacement pump. Background Art

[0002] Reciprocating positive displacement pump is an important fluid conveying equipment, which realizes the suction and discharge of liquid through the reciprocating motion of piston or plunger. The pump is widely used in chemical, pharmaceutical, food processing and water treatment industries.

[0003] The working core of a reciprocating positive displacement pump is: the piston or plunger in the pump reciprocates under the drive of a motor or other power source; then when the piston moves toward the power source, the volume in the pump chamber increases, forming a negative pressure, guiding the liquid into the pump chamber through the suction valve; when the piston moves away from the power source, the volume of the pump chamber decreases, the liquid is compressed and discharged, and flows out of the pump body through the discharge valve.

[0004] Since process requirements usually change, for example, different process stages may require different flow rates. Therefore, the output flow rate of the reciprocating positive displacement pump needs to be adjusted at different process stages. The existing reciprocating positive displacement pump adjustment is mostly achieved by adjusting the piston stroke length to adjust the flow rate of the reciprocating positive displacement pump. However, since the piston plate is located inside the positive displacement pump, it adds a certain degree of difficulty to the adjustment. In addition, the reciprocating positive displacement pump needs to be shut down during the adjustment of the piston stroke length, which seriously affects the working efficiency of the positive displacement pump. Summary of the invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide an adjustable reciprocating positive displacement pump, which can achieve the purpose of improving the adjustment convenience and working efficiency of the reciprocating positive displacement pump.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An adjustable reciprocating positive displacement pump comprises a base, a pump body is fixedly mounted on the base, a pump chamber is provided on the pump body, a piston is slidably mounted in the pump chamber, a motor is fixedly mounted on the base, a driving part that drives and cooperates with a linkage rod is provided on the base, and the motor drives the piston to reciprocate through the driving part, a liquid inlet valve and a liquid discharge valve are respectively inserted on the pump chamber, a liquid inlet pipe is fixedly mounted on the input end of the liquid inlet valve, a liquid discharge pipe is fixedly mounted on the pump body and the output end of the liquid discharge valve, and an adjusting component is provided on the pump body;

[0008] The adjustment assembly includes an adjustment cavity opened on the pump body, an adjustment plate is installed in the adjustment cavity in a sliding and sealing manner, a push plate is installed in the adjustment cavity in a sliding manner, a threaded rod is fixedly installed on the side wall of the push plate away from the pump cavity, and a threaded cylinder that cooperates with the threaded rod is rotatably installed on the pump body.

[0009] Furthermore, the pump body is provided with a filter chamber that cooperates with the liquid inlet valve, the filter chamber is provided with a filter plate, the pump body is embedded with an air cylinder, a plug plate is installed with a sliding seal in the air cylinder, a first mounting rod extending into the filter chamber is fixedly installed on the side wall of the plug plate, a scraper is fixedly installed on the first mounting rod, an air supply assembly that cooperates with the air cylinder is provided on the push plate, and a collecting assembly that cooperates with the scraper is provided on the pump body.

[0010] Furthermore, the air supply assembly includes a buffer pad fixedly mounted on the side wall of the push plate, the buffer pad is provided with a cavity, and the cavity is provided with a first air pipe connected to the air cylinder.

[0011] Furthermore, the collecting assembly includes a collecting chamber opened on the pump body, the filter chamber is provided with a collecting port cooperating with the collecting chamber, the collecting port is provided with a slide groove, a sealing plate is slidably installed in the slide groove, and the top wall of the sealing plate is an inclined surface, a first spring is fixedly installed between the sealing plate and the slide groove, and a push rod cooperating with the sealing plate is fixedly installed on the scraper.

[0012] Furthermore, a second mounting rod extending into the filter chamber is fixedly mounted on the side wall of the plug plate, a cleaning rod is fixedly mounted on the second mounting rod, a first air groove is provided on the cleaning rod, a second air groove is provided on the scraper, and the second air groove is connected with the first air groove through the filter plate, and the side wall of the cleaning rod adjacent to the scraper is in contact with the filter plate, a sewage pipe connected with the second air groove is inserted into the collecting chamber, and a linkage assembly cooperating with the first air groove is provided on the regulating chamber.

[0013] Furthermore, the linkage assembly includes an exhaust valve inserted on the regulating chamber, the output end of the exhaust valve is connected to a second air pipe connected to the first air groove, the regulating chamber is provided with an intake valve connected to the input end and the outside world, and the collecting chamber is embedded with a filter.

[0014] Furthermore, a mounting plate is fixedly installed on the threaded cylinder, a reset spring is fixedly installed between the mounting plate and the pump body, fixing holes are evenly arranged on the mounting plate, a fixing groove is arranged on the pump body, a fixing rod is slidably installed in the fixing groove, a second spring is fixedly installed between the fixing rod and the fixing groove, a spring telescopic rod is fixedly installed on one end of the fixing rod close to the fixing hole, a driving groove is arranged on the spring telescopic rod, a horizontal groove is arranged on the side wall of the pump body, a horizontal rod is slidably installed in the horizontal groove, and one end of the horizontal rod close to the driving groove is an inclined surface.

[0015] Furthermore, a coil electrically connected to the motor is embedded in the pump body, a magnet block cooperating with the coil is embedded in the fixed rod, a pneumatic telescopic rod is fixedly installed on the collecting chamber, a sealing plate fitted with the filter screen is fixedly installed on the output end of the pneumatic telescopic rod, and a third air pipe connected to the input end of the pneumatic telescopic rod is inserted in the fixed groove.

[0016] Furthermore, the bottom wall of the collecting chamber is an inclined surface, and a sewage valve is inserted into the bottom wall of the collecting chamber.

[0017] Furthermore, the inclined surface of the horizontal rod is smooth and tight, and the horizontal rod is cross-shaped.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This solution can change the position of the push plate through the cooperation of the threaded rod and the threaded barrel, thereby changing the position of the adjustment plate when discharging liquid, and further changing the connected volume between the adjustment chamber and the pump chamber. When the negative pressure in the pump chamber absorbs liquid, the adjustment plate will be driven to move closer to the piston, so that the pump chamber and the adjustment chamber are no longer connected. That is, the amount of liquid absorbed by the pump chamber at this time needs to be subtracted from the volume connected between the adjustment chamber and the pump chamber. When the pump chamber discharges liquid, the adjustment plate will be driven to reset and fit with the push plate. That is, the amount of liquid discharged from the pump chamber at this time is the capacity after subtracting the volume connected between the adjustment chamber and the pump chamber. That is, the flow rate can be adjusted by rotating the threaded barrel, so there is no need to close the positive displacement pump for adjustment, which plays a role in improving the working efficiency of the positive displacement pump.

[0020] (2) This solution sets the scraper and the sealing plate to cooperate. During the reciprocating movement of the adjustment plate, the buffer pad will be squeezed back and forth, and the airflow in the cavity will be driven to flow back and forth into the air cylinder, so that the scraper can be driven to move back and forth through the plug plate and the first mounting rod, and the filter plate can be cleaned. At the same time, during the movement of the scraper, impurities can be driven into the collection tank, and after the scraper is separated from the collection port, the sealing plate can block the collection port, thereby preventing impurities from adhering to the surface of the filter plate again, thereby effectively preventing the accumulation of impurities on the filter plate, resulting in the inability of the liquid to pass through the filter plate normally, and affecting the working effect of the volumetric pump, further improving the working efficiency of the volumetric pump;

[0021] (3) This solution provides a cleaning rod, which can drive the airflow in the regulating chamber to flow through the first air groove, the filter plate gap, the second air groove, and the sewage pipe to the collecting chamber during the reciprocating motion of the regulating plate, thereby further ensuring that the liquid passes through the filter plate normally and further improving the working efficiency of the volumetric pump. In addition, when the second spring drives the fixed rod to reset, the gas in the fixed groove is squeezed and flows through the third air pipe to the pneumatic telescopic rod. Then, the output end of the pneumatic telescopic rod extends and drives the sealing plate to seal the filter screen. At this time, the user can open the sewage valve to clean the stains in the collecting chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a top cross-sectional view of the pump body, regulating chamber, filtering chamber and collecting chamber of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 It is a combined diagram of the gas cylinder, the plug plate, the first mounting rod, and the second mounting rod of the present invention;

[0027] Figure 6 It is a combined diagram of the spring pneumatic telescopic rod and the driving groove of the present invention;

[0028] Figure 7 It is a combination diagram of the collecting tank and sewage valve of the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Base; 2. Pump body; 3. Pump chamber; 4. Piston; 5. Motor; 6. Drive unit; 7. Liquid inlet valve; 8. Liquid discharge valve; 9. Liquid inlet pipe; 10. Liquid discharge pipe;

[0031] 11. Adjustment assembly; 1101. Adjustment chamber; 1102. Adjustment plate; 1103. Push plate; 1104. Threaded rod; 1105. Threaded barrel;

[0032] 1201, filter plate; 1202, filter chamber; 1203, air cylinder; 1204, plug plate; 1205, first mounting rod; 1206, scraper; 1207, buffer pad; 1208, cavity; 1209, first air pipe;

[0033] 1301, collecting chamber; 1302, collecting port; 1303, sealing plate; 1304, first spring; 1305, push rod; 1306, filter screen.

[0034] 1401, second mounting rod; 1402, cleaning rod; 1403, first air tank; 1404, second air tank; 1405, drain pipe; 1406, exhaust valve; 1407, second air pipe; 1408, intake valve;

[0035] 1501, mounting plate; 1502, reset spring; 1503, fixing hole; 1504, fixing rod; 1505, second spring; 1506, spring telescopic rod; 1507, horizontal rod; 1508, fixing slot; 1509, driving slot;

[0036] 1601. Coil; 1602. Magnet block; 1603. Pneumatic telescopic rod; 1604. Sealing plate; 1605. Third air pipe; 1606. Sewage valve. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 7 , an adjustable reciprocating positive displacement pump, comprising a base 1, a pump body 2 is fixedly mounted on the base 1, a pump chamber 3 is provided on the pump body 2, a piston 4 is slidably mounted in the pump chamber 3, a motor 5 is fixedly mounted on the base 1, a driving part 6 that drives and cooperates with a linkage rod is provided on the base 1, and the motor 5 drives the piston 4 to reciprocate through the driving part 6, a liquid inlet valve 7 and a liquid discharge valve 8 are respectively inserted on the pump chamber 3, a liquid inlet pipe 9 is fixedly mounted on the input end of the liquid inlet valve 7, a liquid discharge pipe 10 is fixedly mounted on the pump body 2 and the output end of the liquid discharge valve 8, and an adjusting component 11 is provided on the pump body 2;

[0039] The adjusting assembly 11 includes an adjusting chamber 1101 opened on the pump body 2, an adjusting plate 1102 is slidingly and sealably installed in the adjusting chamber 1101, a push plate 1103 is slidingly installed in the adjusting chamber 1101, a threaded rod 1104 is fixedly installed on the side wall of the push plate 1103 away from the pump chamber 3, and a threaded cylinder 1105 that cooperates with the threaded rod 1104 is rotatably installed on the pump body 2.

[0040] When in use, the motor 5 drives the piston 4 to reciprocate in the pump chamber 3 through the driving part 6. When the piston 4 moves away from the push plate 1103, the pressure in the pump chamber 3 decreases. Then, under the action of pressure, the pump chamber 3 absorbs liquid from the outside through the liquid inlet valve 7 and the liquid inlet pipe 9. When the piston 4 moves toward the push plate 1103, the pressure in the pump chamber 3 increases. Then, under the action of pressure, the liquid in the pump chamber 3 flows to the liquid discharge pipe 10 through the liquid discharge valve 8, thereby achieving the purpose of pumping liquid. When the pumping flow rate needs to be adjusted, The user can rotate the threaded barrel 1105. Since the threaded barrel 1105 is threadedly matched with the threaded rod 1104, and the push plate 1103 fixedly connected to the threaded rod 1104 is slidably matched with the adjustment chamber 1101, the threaded rod 1104 cannot rotate. Then, during the rotation of the threaded barrel 1105, the threaded rod 1104 can be driven to move in the adjustment chamber 1101. During the movement of the threaded rod 1104, the push plate 1103 can be driven to move in the adjustment chamber 1101. When the piston 4 moves away from the push plate 1103, the piston 1104 moves away from the push plate 1103. 03, the pressure in the pump chamber 3 decreases, and the regulating plate 1102 will move toward the piston 4. When the piston 4 moves toward the push plate 1103, the regulating plate 1102 will move toward the push plate 1103 and fit the push plate 1103. By changing the position of the push plate 1103, the position of the regulating plate 1102 when discharging the liquid can be changed, thereby changing the connected volume between the regulating chamber 1101 and the pump chamber 3. When the negative pressure in the pump chamber 3 absorbs the liquid, the regulating plate 1102 will be driven to approach the piston 4. The pump chamber 3 is close to the regulating chamber 1101, thereby causing the pump chamber 3 to no longer be connected with the regulating chamber 1101, that is, the amount of liquid sucked by the pump chamber 3 at this time needs to be subtracted from the volume connected between the regulating chamber 1101 and the pump chamber 3. When the pump chamber 3 discharges the liquid, it will drive the regulating plate 1102 to reset and fit with the push plate 1103. At this time, the discharge amount of the pump chamber 3 is the capacity after deducting the volume connected between the regulating chamber 1101 and the pump chamber 3. That is, the flow rate can be adjusted by rotating the threaded barrel 1105, so there is no need to close the positive displacement pump for adjustment, which plays a role in improving the working efficiency of the positive displacement pump.

[0041] like Figure 2 , Figure 4 , Figure 5 As shown, the pump body 2 is provided with a filter chamber 1202 which cooperates with the liquid inlet valve 7, a filter plate 1201 is provided in the filter chamber 1202, an air cylinder 1203 is embedded in the pump body 2, a plug plate 1204 is installed in the air cylinder 1203 in a sliding seal, a first mounting rod 1205 extending into the filter chamber 1202 is fixedly installed on the side wall of the plug plate 1204, a scraper 1206 is fixedly installed on the first mounting rod 1205, an air supply assembly which cooperates with the air cylinder 1203 is provided on the push plate 1103, and a collecting assembly which cooperates with the scraper 1206 is provided on the pump body 2.

[0042] The air supply assembly includes a buffer pad 1207 fixedly mounted on the side wall of the push plate 1103 , the buffer pad 1207 is provided with a cavity 1208 , and the cavity 1208 is provided with a first air pipe 1209 connected to the air cylinder 1203 .

[0043] The collecting assembly includes a collecting chamber 1301 opened on the pump body 2, a collecting port 1302 cooperating with the collecting chamber 1301 is opened on the filter chamber 1202, a sliding groove is opened on the collecting port 1302, a sealing plate 1303 is slidably installed in the sliding groove, and the top wall of the sealing plate 1303 is an inclined surface, a first spring 1304 is fixedly installed between the sealing plate 1303 and the sliding groove, and a push rod 1305 cooperating with the sealing plate 1303 is fixedly installed on the scraper 1206.

[0044] By adopting the above technical scheme, since there are more sand and impurities in the water flow by the river, and then the pressure in the pump chamber 3 is reduced and in the process of sucking liquid through the liquid inlet valve 7, the liquid inlet valve 7 absorbs liquid through the filter chamber 1202, the filter plate 1201, and the liquid inlet pipe 9. In the process of the liquid passing through the filter plate 1201, the filter plate 1201 can block the impurities in the liquid, thereby effectively preventing the impurities in the liquid from clogging the liquid inlet valve 7, and can also prevent impurities from entering the pump chamber 3 and hitting the piston 4 and accelerating the wear of the piston 4, causing the volume pump to be easily damaged, thereby seriously affecting the working effect of the volume pump, and then in the process of the adjustment plate 1102 moving to the push plate 1103, by setting the buffer pad 1207, it can be When 1102 contacts with the push plate 1103, buffering is performed, thereby reducing the impact force on the push plate 1103, and further reducing the damage to the push plate 1103. Then, in the process of the adjusting plate 1102 squeezing the buffer pad 1207, the gas in the cavity 1208 is squeezed and flows into the air cylinder 1203 through the first air pipe 1209. Then the airflow pushes the plug plate 1204 to move. In the process of the plug plate 1204 moving, the scraper 1206 is driven to move through the first mounting rod 1205 and the impurities on the filter plate 1201 are cleaned, thereby effectively preventing the accumulation of impurities on the filter plate 1201, resulting in the inability of the liquid to pass through the filter plate 1201 normally, and affecting the working effect of the volumetric pump, thereby further improving the working efficiency of the volumetric pump.

[0045] In the initial state, the first spring 1304 is in a free extension state. When the scraper 1206 cleans the filter plate 1201, it drives the push rod 1305 to move. When the scraper 1206 drives the impurities into the collection port 1302 and the scraper 1206 blocks the collection port 1302, the push rod 1305 contacts the inclined surface of the top wall of the sealing plate 1303 and drives the sealing plate 1303 to squeeze the first spring 1304. Then the impurities enter the collection chamber 1301 through the collection port 1302. When the adjustment plate 1102 moves away from the push plate 1103, the buffer pad 1207 gradually extends and passes through the first spring 1304. An air pipe 1209 draws air from the air cylinder 1203, and then the pressure in the air cylinder 1203 decreases. Under the action of the pressure, the plug plate 1204 drives the scraper 1206 to move toward the air cylinder 1203 through the first mounting rod 1205. During the movement of the scraper 1206, the push rod 1305 is driven to gradually break away from the sealing plate 1303. At this time, the first spring 1304 extends and drives the sealing plate 1303 to seal the collection port 1302, thereby facilitating the processing of impurities while effectively preventing impurities from adhering to the surface of the filter plate 1201 again, thereby improving the cleaning effect of the filter plate 1201.

[0046] like Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, a second mounting rod 1401 extending into the filter chamber 1202 is fixedly mounted on the side wall of the plug plate 1204, a cleaning rod 1402 is fixedly mounted on the second mounting rod 1401, a first air groove 1403 is provided on the cleaning rod 1402, a second air groove 1404 is provided on the scraper 1206, and the second air groove 1404 is connected with the first air groove 1403 through the filter plate 1201, and the side wall of the cleaning rod 1402 adjacent to the scraper 1206 is in contact with the filter plate 1201, a sewage pipe 1405 connected with the second air groove 1404 is inserted on the collecting chamber 1301, and a linkage component cooperating with the first air groove 1403 is provided on the regulating chamber 1101.

[0047] The linkage assembly includes an exhaust valve 1406 inserted on the regulating chamber 1101, the output end of the exhaust valve 1406 is connected to a second air pipe 1407 connected to the first air groove 1403, an intake valve 1408 connected to the input end and the outside world is inserted on the regulating chamber 1101, and a filter net 1306 is embedded in the collecting chamber 1301.

[0048] By adopting the above technical scheme, in the process of liquid passing through the filter plate 1201, some fine particles of impurities will be mixed in the gap of the filter plate 1201. If the impurities in the gap of the filter plate 1201 cannot be cleaned in time, it will still affect the normal operation of the positive displacement pump. Then, in the process of the movement of the plug plate 1204, the scraper 1206 and the cleaning rod 1402 are driven to move by the first mounting rod 1205 and the second mounting rod 1401 respectively. At the same time, when the adjusting plate 1102 moves away from the push plate 1103, the space in the adjusting chamber 1101 located on the side of the adjusting plate 1102 close to the push plate 1103 is inhaled from the outside through the air inlet valve 1408, and then when the adjusting plate 1102 moves toward the push plate 1103, the space in the adjusting chamber 1101 located on the side of the adjusting plate 1102 close to the push plate 1103 is filled with air. The gas in the space on one side of the section plate 1102 close to the push plate 1103 is squeezed and flows to the first air groove 1403 through the exhaust valve 1406 and the second air pipe 1407, and then the air flows through the first air groove 1403, the gap of the filter plate 1201, the second air groove 1404, and the sewage pipe 1405 to flow into the collecting chamber 1301, thereby further ensuring that the liquid passes through the filter plate 1201 normally, and further improving the working efficiency of the volumetric pump; at the same time, by setting the filter net 1306, in the process of the air flow flowing to the collecting chamber 1301, the liquid in the collecting chamber 1301 and the air flow will be driven to flow into the filter chamber 1202 through the filter net 1306, thereby avoiding the excessive pressure in the collecting chamber 1301 affecting the normal air flow and driving impurities into the collecting chamber 1301.

[0049] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, a mounting plate 1501 is fixedly installed on the threaded cylinder 1105, and a reset spring 1502 is fixedly installed between the mounting plate 1501 and the pump body 2. Fixing holes 1503 are evenly provided on the mounting plate 1501, and a fixing groove 1508 is provided on the pump body 2. A fixing rod 1504 is slidably installed in the fixing groove 1508, and a second spring 1505 is fixedly installed between the fixing rod 1504 and the fixing groove 1508. A spring telescopic rod 1506 is fixedly installed on one end of the fixing rod 1504 close to the fixing hole 1503, and a driving groove 1509 is provided on the spring telescopic rod 1506. A horizontal groove is provided on the side wall of the pump body 2, and a horizontal rod 1507 is slidably installed in the horizontal groove, and one end of the horizontal rod 1507 close to the driving groove 1509 is an inclined surface.

[0050] A coil 1601 electrically connected to the motor 5 is embedded on the pump body 2, a magnet block 1602 cooperating with the coil 1601 is embedded on the fixed rod 1504, a pneumatic telescopic rod 1603 is fixedly installed on the collecting chamber 1301, a sealing plate 1604 fitted with the filter 1306 is fixedly installed on the output end of the pneumatic telescopic rod 1603, and a third air pipe 1605 connected to the input end of the pneumatic telescopic rod 1603 is inserted in the fixed groove 1508.

[0051] The bottom wall of the collecting chamber 1301 is an inclined surface, and a sewage valve 1606 is inserted into the bottom wall of the collecting chamber 1301 .

[0052] By adopting the above technical solution, when the motor 5 is working, the coil 1601 is energized and generates a magnetic field. Then, under the action of the magnetic field, the magnet block 1602 passes through the fixed rod 1504 and drives the output end of the spring telescopic rod 1506 to be inserted into the fixed hole 1503. At this time, the second spring 1505 is stretched and has a tendency to recover. Then, before rotating the threaded cylinder 1105, the user can first push the horizontal rod 1507 to move. During the movement of the horizontal rod 1507, the inclined surface of the horizontal rod 1507 gradually contacts the driving groove 1509 and applies a thrust to the driving groove 1509. Then, under the action of the thrust, the output end of the spring telescopic rod 1506 is compressed and disengaged from the fixed hole 1503. Then, the user can rotate the threaded cylinder 1105. During the rotation of the threaded cylinder 1105, the mounting plate 1501 is driven to rotate. During the rotation of the mounting plate 1501, the reset spring 1502 is deformed and has a tendency to recover. When the rotation of the threaded cylinder 1105 is completed, the user can First, release the horizontal rod 1507. At this time, the output end of the spring telescopic rod 1506 stretches and is inserted into the fixing hole 1503 to fix the mounting plate 1501. In the process of stretching the output end of the spring telescopic rod 1506, the driving slot 1509 is driven to move. In the process of moving the driving slot 1509, the horizontal rod 1507 is driven to reset through the inclined surface of the horizontal rod 1507. When the displacement pump is finished and the motor 5 is powered off, the electromagnetic field of the coil 1601 disappears. At this time, the second spring 1505 contracts and drives the spring telescopic rod 1506 to disengage from the fixing hole 1503 through the fixing rod 1504. At this time, the reset spring 1502 stretches and drives the mounting plate 1501 to reset. In the process of resetting the mounting plate 1501, the push rod 1305 is driven to reset through the threaded barrel 1105 and the threaded rod 1104. That is, after the displacement pump is finished, the flow rate of the displacement pump is automatically restored, and there is no need for the next user to spend time adjusting and restoring the displacement pump, thereby improving the use efficiency of the displacement pump.

[0053] During the process of the second spring 1505 driving the fixed rod 1504 to reset, the gas in the fixed groove 1508 is squeezed and flows into the pneumatic telescopic rod 1603 through the third air pipe 1605, and then the output end of the pneumatic telescopic rod 1603 extends and drives the sealing plate 1604 to seal the filter screen 1306. At this time, the user can open the sewage valve 1606 to clean the stains in the collection chamber 1301, which facilitates the cleaning of impurities in the collection chamber 1301. At the same time, since the sealing plate 1604 is in contact with the filter screen 1306, the impurities adhered to the filter screen 1306 can be cleaned during the cleaning of the filter screen 1306 by the sealing plate 1604. In addition, by making the bottom wall of the collection chamber 1301 an inclined surface, it can be ensured that the impurities in the collection chamber 1301 flow to the outside through the sewage valve 1606 together with the liquid, thereby improving the impurity cleaning effect.

[0054] When the magnetic field of the coil 1601 drives the fixed rod 1504 to stretch the second spring 1505, the fixed groove 1508 draws air from the pneumatic telescopic rod 1603 through the third air pipe 1605, and causes the output end of the pneumatic telescopic rod 1603 to contract. During the contraction of the output end of the pneumatic telescopic rod 1603, the sealing plate 1604 is driven to disengage from the filter screen 1306, thereby ensuring the normal operation of the filter screen 1306.

[0055] like Figure 3 As shown, the inclined surface of the horizontal rod 1507 is smooth and tight, and the horizontal rod 1507 is cross-shaped.

[0056] By adopting the above technical solution, in the process of the inclined surface of the horizontal rod 1507 driving the output end of the spring telescopic rod 1506 to contract, the inclined surface of the horizontal rod 1507 will rub against the driving groove 1509. By making the inclined surface of the horizontal rod 1507 smooth and tight, the friction between the horizontal rod 1507 and the driving groove 1509 can be reduced, thereby ensuring that the horizontal rod 1507 can normally drive the output end of the spring telescopic rod 1506 to contract normally. In addition, by making the horizontal rod 1507 cross-shaped, the horizontal rod 1507 can be prevented from being out of contact with the horizontal groove.

[0057] Instructions for use: During use, the motor 5 drives the piston 4 to reciprocate in the pump chamber 3 through the driving unit 6. When the piston 4 moves away from the push plate 1103, the pressure in the pump chamber 3 decreases. Then, under the action of pressure, the pump chamber 3 absorbs liquid from the outside through the liquid inlet valve 7 and the liquid inlet pipe 9. When the piston 4 moves toward the push plate 1103, the pressure in the pump chamber 3 increases. Then, under the action of pressure, the liquid in the pump chamber 3 flows to the liquid discharge pipe 10 through the liquid discharge valve 8, thereby achieving the purpose of pumping and discharging liquid. When it is necessary to adjust the flow rate of pumping and discharging, the user can rotate the threaded barrel 1105. Since the threaded barrel 1105 is threadedly matched with the threaded rod 1104 and is connected with the threaded rod 1104 The fixedly connected push plate 1103 is slidably matched with the adjusting chamber 1101, and the threaded rod 1104 cannot rotate. Then, during the rotation of the threaded barrel 1105, the threaded rod 1104 can be driven to move in the adjusting chamber 1101, and during the movement of the threaded rod 1104, the push plate 1103 is driven to move in the adjusting chamber 1101. When the piston 4 moves away from the push plate 1103, the pressure in the pump chamber 3 decreases, and the adjusting plate 1102 will move toward the piston 4. When the piston 4 moves toward the push plate 1103, the adjusting plate 1102 will move toward the push plate 1103 and fit with the push plate 1103. By changing the position of the push plate 1103, Then, the position of the regulating plate 1102 can be changed when discharging the liquid, thereby changing the connected volume of the regulating chamber 1101 and the pump chamber 3. When the negative pressure in the pump chamber 3 absorbs the liquid, the regulating plate 1102 will be driven to approach the piston 4, thereby making the pump chamber 3 and the regulating chamber 1101 no longer connected. That is, the amount of liquid absorbed by the pump chamber 3 at this time needs to be subtracted from the volume connected between the regulating chamber 1101 and the pump chamber 3. When the pump chamber 3 discharges the liquid, the regulating plate 1102 will be driven to reset and fit with the push plate 1103. That is, the discharge amount of the pump chamber 3 at this time is the capacity after subtracting the connected volume of the regulating chamber 1101 and the pump chamber 3. That is, the flow rate can be adjusted by rotating the threaded barrel 1105. When the regulating plate 1102 squeezes the liquid, the regulating plate 1102 will be driven to reset and fit with the push plate 1103. During the process of the buffer pad 1207, the gas in the cavity 1208 is squeezed and flows into the air cylinder 1203 through the first air pipe 1209, and then the airflow pushes the plug plate 1204 to move. During the movement of the plug plate 1204, the scraper 1206 is driven to move through the first mounting rod 1205 to clean the impurities on the filter plate 1201; during the movement of the scraper 1206, the push rod 1305 is driven to gradually break away from the sealing plate 1303. At this time, the first spring 1304 stretches and drives the sealing plate 1303 to block the collecting port 1302, so as to facilitate the treatment of impurities and effectively prevent the impurities from adhering to the surface of the filter plate 1201 again;When the adjusting plate 1102 moves toward the pushing plate 1103, the gas in the space on the side of the adjusting plate 1102 close to the pushing plate 1103 in the volume chamber is squeezed and flows to the first gas groove 1403 through the exhaust valve 1406 and the second gas pipe 1407, and then the air flows through the first gas groove 1403, the gap of the filter plate 1201, the second gas groove 1404, and the sewage pipe 1405 to flow into the collecting chamber 1301; when the displacement pump is finished and the motor 5 is powered off, the electromagnetic field of the coil 1601 disappears, and at this time the second spring 1505 contracts and drives the spring telescopic rod 1506 to disengage from the fixing hole 1503 through the fixing rod 1504, and at this time the reset spring 1502 stretches and drives the mounting plate 1501 to reset, and during the process of the mounting plate 1501 being reset, the push rod 1305 is driven to reset through the threaded cylinder 1105 and the threaded rod 1104; During the process of the second spring 1505 driving the fixed rod 1504 to reset, the gas in the fixed groove 1508 is squeezed and flows into the pneumatic telescopic rod 1603 through the third air pipe 1605, and then the output end of the pneumatic telescopic rod 1603 extends and drives the blocking plate 1604 to block the filter screen 1306. At this time, the user can open the sewage valve 1606 to clean the stains in the collection chamber 1301, which facilitates the cleaning of impurities in the collection chamber 1301. At the same time, since the blocking plate 1604 is in contact with the filter screen 1306, the impurities adhering to the filter screen 1306 can be cleaned during the cleaning of the filter screen 1306 by the blocking plate 1604. In addition, by making the bottom wall of the collection chamber 1301 an inclined surface, it can be ensured that the impurities in the collection chamber 1301 flow to the outside through the sewage valve 1606 together with the liquid. ;

[0058] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable reciprocating positive displacement pump, comprising a base (1), a pump body (2) fixedly mounted on the base (1), a pump chamber (3) provided on the pump body (2), a piston (4) slidably mounted in the pump chamber (3), a motor (5) fixedly mounted on the base (1), a driving part (6) driving and cooperating with a linkage rod provided on the base (1), and the motor (5) drives the piston (4) to reciprocate through the driving part (6), a liquid inlet valve (7) and a liquid discharge valve (8) are respectively inserted into the pump chamber (3), a liquid inlet pipe (9) is fixedly mounted on the input end of the liquid inlet valve (7), a liquid discharge pipe (10) is fixedly mounted on the output end of the liquid discharge valve (8) provided on the pump body (2), and an adjusting component (11) is provided on the pump body (2); Features: The regulating assembly (11) comprises a regulating chamber (1101) provided on the pump body (2), an regulating plate (1102) being slidably and sealably mounted in the regulating chamber (1101), a push plate (1103) being slidably mounted in the regulating chamber (1101), a threaded rod (1104) being fixedly mounted on the side wall of the push plate (1103) away from the pump chamber (3), and a threaded cylinder (1105) cooperating with the threaded rod (1104) being rotatably mounted on the pump body (2).

2. An adjustable reciprocating positive displacement pump according to claim 1, characterized in that: The pump body (2) is provided with a filter chamber (1202) cooperating with the liquid inlet valve (7), the filter chamber (1202) is provided with a filter plate (1201), an air cylinder (1203) is embedded in the pump body (2), a plug plate (1204) is installed in the air cylinder (1203) in a sliding seal, a first mounting rod (1205) extending into the filter chamber (1202) is fixedly installed on the side wall of the plug plate (1204), a scraper (1206) is fixedly installed on the first mounting rod (1205), an air supply component cooperating with the air cylinder (1203) is provided on the push plate (1103), and a collection component cooperating with the scraper (1206) is provided on the pump body (2).

3. An adjustable reciprocating positive displacement pump according to claim 2, characterized in that: The air supply assembly comprises a buffer pad (1207) fixedly mounted on the side wall of the push plate (1103), a cavity (1208) being provided on the buffer pad (1207), and a first air pipe (1209) communicating with the air cylinder (1203) being inserted into the cavity (1208).

4. An adjustable reciprocating positive displacement pump according to claim 3, characterized in that: The collecting assembly comprises a collecting chamber (1301) provided on the pump body (2); a collecting port (1302) cooperating with the collecting chamber (1301) is provided on the filtering chamber (1202); a sliding groove is provided on the collecting port (1302); a sealing plate (1303) is slidably installed in the sliding groove, and the top wall of the sealing plate (1303) is an inclined surface; a first spring (1304) is fixedly installed between the sealing plate (1303) and the sliding groove; and a push rod (1305) cooperating with the sealing plate (1303) is fixedly installed on the scraper (1206).

5. An adjustable reciprocating positive displacement pump according to claim 4, characterized in that: A second mounting rod (1401) extending into the filter chamber (1202) is fixedly mounted on the side wall of the plug plate (1204); a cleaning rod (1402) is fixedly mounted on the second mounting rod (1401); a first air groove (1403) is provided on the cleaning rod (1402); a second air groove (1404) is provided on the scraper (1206); the second air groove (1404) is connected to the first air groove (1403) through the filter plate (1201); the side wall of the cleaning rod (1402) and the scraper (1206) adjacent to the filter plate (1201) is in contact with the filter plate (1201); a sewage pipe (1405) connected to the second air groove (1404) is inserted into the collecting chamber (1301); and a linkage component cooperating with the first air groove (1403) is provided on the regulating chamber (1101).

6. An adjustable reciprocating positive displacement pump according to claim 5, characterized in that: The linkage assembly comprises an exhaust valve (1406) inserted in the regulating chamber (1101); the output end of the exhaust valve (1406) is connected to a second air pipe (1407) connected to the first air groove (1403); an intake valve (1408) connected to the input end and the outside is inserted in the regulating chamber (1101); and a filter screen (1306) is embedded in the collecting chamber (1301).

7. An adjustable reciprocating positive displacement pump according to claim 2, characterized in that: The threaded cylinder (1105) is fixedly mounted with a mounting plate (1501), a return spring (1502) is fixedly mounted between the mounting plate (1501) and the pump body (2), the mounting plate (1501) is evenly provided with fixing holes (1503), the pump body (2) is provided with a fixing groove (1508), a fixing rod (1504) is slidably mounted in the fixing groove (1508), and the fixing rod (1504) and the fixing groove (1508) are rotatably mounted. ) are fixedly installed between the pump body (2), a spring telescopic rod (1506) is fixedly installed on one end of the fixing rod (1504) close to the fixing hole (1503), a driving groove (1509) is provided on the spring telescopic rod (1506), a horizontal groove is provided on the side wall of the pump body (2), a horizontal rod (1507) is slidably installed in the horizontal groove, and one end of the horizontal rod (1507) close to the driving groove (1509) is an inclined surface.

8. An adjustable reciprocating positive displacement pump according to claim 4, characterized in that: The pump body (2) is embedded with a coil (1601) electrically connected to the motor (5); the fixed rod (1504) is embedded with a magnet block (1602) cooperating with the coil (1601); a pneumatic telescopic rod (1603) is fixedly installed on the collection chamber (1301); a sealing plate (1604) in contact with the filter (1306) is fixedly installed on the output end of the pneumatic telescopic rod (1603); and a third air pipe (1605) connected to the input end of the pneumatic telescopic rod (1603) is inserted into the fixed groove (1508).

9. An adjustable reciprocating positive displacement pump according to claim 4, characterized in that: The bottom wall of the collecting chamber (1301) is an inclined surface, and a sewage valve (1606) is inserted into the bottom wall of the collecting chamber (1301).

10. An adjustable reciprocating positive displacement pump according to claim 7, characterized in that: The inclined surface of the horizontal rod (1507) is smooth and tight, and the horizontal rod (1507) is cross-shaped.

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