Novel plunger pump driving structure

Abstract

The utility model discloses a novel plunger pump driving structure, which relates to the technical field of plunger pumps, and comprises a machine table top and two plunger pumps, the two plunger pumps are both positioned above the machine table top, a servo driving mechanism is arranged below the machine table top, each plunger pump comprises a plunger pump ceramic sleeve, the lower end of each plunger pump ceramic sleeve is sleeved with a ceramic protective sleeve, and the lower end of each ceramic protective sleeve is sleeved with a piston rod. The upper end of the plunger pump ceramic sleeve is sleeved with an end face seal head, the bottom end of the end face seal head is connected with the top end of the ceramic protective sleeve through a connecting nut, and a sealing structure is arranged in the end face seal head. According to the utility model, the plunger pump is arranged above the table top of the machine table, so that the parts above the table top of the machine table are fewer, the machine table is tidier and more attractive, the plunger pump is simpler in structure, more convenient to install and overhaul and lower in production and manufacturing cost, and the filling precision is improved due to the simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a novel plunger pump driving structure. Background Art

[0002] The plunger pump relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to drive the flow of liquid. There are various types and uses of plunger pumps. Among them, the slot valve plunger pump is widely used in the fields of pharmaceuticals and food. It is a high-precision metering pump for precise fixed-volume filling of liquids.

[0003] A common slot valve type plunger pump in the prior art mainly comprises a plunger pump sleeve and a plunger pump plug with a slot valve, such as a novel slot valve type plunger pump with publication number CN221838517U.

[0004] When the slot valve is aligned with the liquid inlet, the metering rod is pulled out from the plunger pump sleeve, the volume of the plunger chamber increases, and a vacuum is generated to suck in the liquid; conversely, the slot valve stem is rotated a certain angle, the slot valve is aligned with the liquid outlet, the metering rod is pushed into the plunger pump sleeve, the volume of the chamber decreases, and the liquid is discharged, thereby realizing fluid filling and metering.

[0005] However, the slot valve plunger pump in the prior art has a complex structure, high manufacturing cost, high maintenance and repair cost, and the complex structure also leads to large cumulative assembly errors, low filling metering accuracy, complicated structure, and poor aesthetics. Utility Model Content

[0006] To this end, the utility model provides a novel plunger pump driving structure to solve the problems of relatively high manufacturing cost and relatively large cumulative assembly error caused by the complex structure of the slot valve type plunger pump in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A novel plunger pump driving structure includes a machine table and two plunger pumps, the two plunger pumps are located above the machine table, a servo drive mechanism is provided below the machine table, the plunger pump includes a plunger pump ceramic sleeve, the outer circle of the plunger pump ceramic sleeve has two diameters, one large and one small, the lower end of the plunger pump ceramic sleeve is provided with a ceramic protective sleeve, the inner diameter of the ceramic protective sleeve is 0.15-0.2mm larger than the outer diameter of the lower end of the plunger pump ceramic sleeve.

[0009] The upper end sleeve of the plunger pump ceramic sleeve is provided with an end face seal, which is gap-matched with the upper end of the plunger pump ceramic sleeve. The bottom end of the end face seal and the top end of the ceramic protective sleeve are connected by a connecting nut, which is arranged at the connection between the two through a threaded sleeve. A sealing structure is provided inside the end face seal, which includes a plug located inside the end face seal, the outer circle of the plug is precisely matched with the inner hole of the plunger pump ceramic sleeve, and a sealing gasket is provided on the outer end sleeve of the plug, and the end face seal presses the plug and the sealing gasket tightly.

[0010] A mounting mechanism for fixing the plunger pump is provided at the top of the machine table, and the mounting mechanism includes a mounting plate, and four small columns are provided at the bottom end of the mounting plate, and the bottom ends of the small columns are connected to the top of the machine table. Two U-shaped holes are provided on the mounting plate, and two plunger pumps are respectively embedded in the two U-shaped holes.

[0011] Furthermore, a liquid inlet channel and a liquid outlet channel are respectively provided on both sides of the plunger pump, and the angle between the two channels is 120° or 180°. The two channels may be on the same plane or not. The liquid inlet channel includes an inner liquid inlet port provided at the outer end of the ceramic sleeve of the plunger pump, and a gasket 1 is provided at the outward end of the inner liquid inlet port, and the gasket 1 is embedded in a gasket plane at the outer end of the ceramic sleeve of the plunger pump;

[0012] The liquid outlet channel and the liquid inlet channel have the same structure. The liquid outlet channel includes an inner liquid outlet opened at the outer end of the plunger pump ceramic sleeve. A gasket 2 is provided at the outward end of the inner liquid outlet. The gasket 2 is embedded in the gasket plane 2 of the outer end of the plunger pump ceramic sleeve.

[0013] Furthermore, an external liquid inlet is fixedly provided at the outer end of the ceramic protective sleeve, and one end of the external liquid inlet facing the plunger pump ceramic sleeve is aligned with and communicated with the internal liquid inlet, and a tooth pattern is pressed on the outer end of the external liquid inlet, and an end of the external liquid inlet away from the plunger pump ceramic sleeve is provided with a liquid inlet nozzle, and a mounting nut is provided at the connection between the liquid inlet nozzle and the external liquid inlet, and the mounting nut presses the liquid inlet nozzle onto the external liquid inlet, and the mounting nut is connected to the external liquid inlet through a thread;

[0014] An outgoing liquid outlet is fixedly provided at the outer end of the ceramic protective sleeve, and the outgoing liquid outlet is aligned with and communicated with the inner liquid outlet at one end facing the ceramic sleeve of the plunger pump, and a second tooth pattern is pressed on the outer end of the outgoing liquid outlet, and a liquid outlet nozzle is provided at the end of the outgoing liquid outlet away from the ceramic sleeve of the plunger pump, and a second mounting nut is provided at the connection between the liquid outlet nozzle and the outgoing liquid outlet, and the second mounting nut presses the liquid outlet nozzle onto the outgoing liquid outlet, and the second mounting nut is connected to the outgoing liquid outlet through a thread.

[0015] Furthermore, a slot valve metering rod is provided inside the ceramic sleeve of the plunger pump, and the outer end of the slot valve metering rod is in contact with the inner wall of the ceramic sleeve of the plunger pump. The inner wall of the ceramic sleeve of the plunger pump and the outer end of the slot valve metering rod are smooth and cooperate with each other. The bottom end of the slot valve metering rod is located below the ceramic sleeve of the plunger pump, and the bottom end of the slot valve metering rod is connected to a driving connecting rod through a cross-section. The cross-section is for eliminating the misalignment of the slot valve metering rod and the driving connecting rod, eliminating eccentric wear, and extending the service life of the plunger pump. The outer end of the driving connecting rod is provided with a waterproof protective cover, which is fixed on the machine table. The driving connecting rod passes through the machine table through the waterproof protective cover, and the bottom end of the driving connecting rod is connected to the servo drive mechanism.

[0016] Furthermore, an upper ring groove and a lower ring groove are formed at the outer end of the plunger pump ceramic sleeve, the upper ring groove is located above the lower ring groove, and O-rings are embedded inside the upper ring groove and the lower ring groove;

[0017] An orientation structure is provided between the plunger pump ceramic sleeve and the ceramic protective sleeve. The orientation structure includes a protective sleeve milling flattening position opened at the junction of the upper and lower parts of the plunger pump ceramic sleeve. A ceramic grinding flattening position is provided on the inner wall of the ceramic protective sleeve and is engaged with the protective sleeve milling flattening position. After the two are engaged, the plunger pump ceramic sleeve can no longer rotate relative to the ceramic protective sleeve, thereby playing a fixing role.

[0018] Furthermore, a pressure plate is provided on one side of the mounting fixing plate through a fastening screw, and the pressure plate presses and fixes the plunger pump on the mounting fixing plate. A plunger mounting fixing position is provided at the outer end of the ceramic protective sleeve, and the outer end of the plunger mounting fixing position is processed into four parts: plunger sleeve milling flattening position one, plunger sleeve milling flattening position two, plunger sleeve milling flattening position three and plunger sleeve arc surface. The inner wall of the U-shaped hole is processed into three parts: side fixing surface one, arc surface and side fixing surface two.

[0019] Furthermore, the servo drive mechanism includes two drive modules arranged at the bottom of the machine table, a slide is provided on the drive module, a screw is provided on the drive module, the rotation of the screw can drive the slide to move linearly up and down, and the stroke is between 40-250mm. A servo motor for driving the screw to rotate is provided at the bottom of the drive module.

[0020] Furthermore, a supporting plate is fixedly provided on the slide, a servo motor 2 is fixedly provided on the bottom end of the supporting plate, and the servo motor 2 is connected to the bottom end of the driving connecting rod.

[0021] The utility model has the following advantages:

[0022] By installing the plunger pump above the machine table, there are fewer parts above the machine table, which is more neat and beautiful. The structure of the plunger pump is simpler, and installation and maintenance are more convenient. The production cost is also lower. The simple structure also improves the accuracy of filling.

[0023] The servo drive structure is arranged under the machine table, so that the components on the top of the machine table are fewer and more beautiful. The large components on the top of the machine table are removed, and the turbulence that damages the clean environment of the filling area is eliminated. There is no drive friction on the machine table, and no dust is generated, which improves the cleanliness level of the filling area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] Figure 1 It is the overall structure diagram of the utility model;

[0027] Figure 2 This is an exploded view of the installation mechanism of the utility model;

[0028] Figure 3 This is a cross-sectional view of the ceramic sleeve of the plunger pump of the utility model;

[0029] Figure 4 For the utility model Figure 3 Enlarged view of part A in the middle;

[0030] Figure 5 It is a cross-sectional view of the servo drive mechanism of the utility model;

[0031] Figure 6 This is a structural diagram of the ceramic sleeve of the plunger pump of the utility model;

[0032] Figure 7 It is a partial cross-sectional view of the ceramic sleeve of the plunger pump of the utility model;

[0033] Figure 8 It is a top cross-sectional view of the directional structure of the utility model;

[0034] Fig. 9 It is a top view of the installation fixing plate of the utility model;

[0035] Fig.10 This is a schematic diagram of the flattening of the plunger pump of the utility model;

[0036] Fig.11 This is the internal structure diagram of the U-shaped hole of the utility model.

[0037] In the figure: 1, plunger pump; 11, plunger pump ceramic sleeve; 111, ceramic protective sleeve; 12, end head; 13, sealing structure; 131, upper ring groove; 132, lower ring groove; 133, directional structure; 14, connecting nut;

[0038] 15, external liquid inlet; 151, internal liquid inlet; 152, washer plane 1; 153, washer 1; 154, liquid inlet nozzle; 155, mounting nut 1; 156, thread 1; 16, external liquid outlet; 161, internal liquid outlet; 162, washer plane 2; 163, washer 2; 164, liquid outlet nozzle; 165, mounting nut 2; 166, thread 2;

[0039] 17. Plunger installation and fixing position; 18. Plunger sleeve milling flat position 1; 19. Plunger sleeve milling flat position 2; 110. Plunger sleeve milling flat position 3; 1011. Plunger sleeve arc surface; 112. Slot valve metering rod; 113. Cross digit; 114. Driving connecting rod; 115. Sealing gasket; 116. Protective sleeve milling flat position; 117. Ceramic grinding flat position;

[0040] 21. Plug; 22. Mounting plate; 23. Small column; 24. Arc surface; 25. U-shaped hole; 26. Side fixing surface 1; 27. Side fixing surface 2; 28. Pressing plate; 29. ​​Fastening screw;

[0041] 31. Drive module; 32. Slide; 33. Servo motor 1; 34. Screw; 35. Support plate; 36. Servo motor 2; 4. Machine table. DETAILED DESCRIPTION

[0042] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-Figure 11As shown, the utility model provides a novel plunger pump driving structure, including a machine table 4 and two plunger pumps 1, the two plunger pumps 1 are both located above the machine table 4, the number of the plunger pumps 1 can also be one or more, can be arranged in a straight line in one row, can also be arranged back to back in two rows, a servo drive mechanism is arranged below the machine table 4, the plunger pump 1 includes a plunger pump ceramic sleeve 11, the outer circle of the plunger pump ceramic sleeve 11 has two diameters, one section is large and the other section is small, the upper end has a large diameter, and the lower end has a small diameter, the lower end of the plunger pump ceramic sleeve 11 is provided with a ceramic protective sleeve 111, the inner diameter of the ceramic protective sleeve 111 is 0.15-0.2mm larger than the outer diameter of the lower end of the plunger pump ceramic sleeve 11, so that a gap is left for easy disassembly, the reason why the plunger pump ceramic sleeve 11 has a large diameter in one section and a small diameter in another section is that the ceramic protective sleeve 111 is stuck in a small diameter portion, and the boundary between the two diameters acts as a limiter, so that the ceramic protective sleeve 111 can no longer slide upward, thereby positioning the ceramic protective sleeve 111.

[0044] The upper end of the plunger pump ceramic sleeve 11 is sleeved with an end face head 12, and the end face head 12 is gap-matched with the upper end of the plunger pump ceramic sleeve 11. The bottom end of the end face head 12 and the top end of the ceramic protective sleeve 111 are connected by a connecting nut 14, and the connecting nut 14 is sleeved at the connection between the two through a threaded sleeve. A sealing structure 13 is provided inside the end face head 12. The sealing structure 13 includes a plug 21 located inside the end face head 12. The outer circle of the plug 21 is precisely matched with the inner hole of the plunger pump ceramic sleeve 11. A sealing gasket 115 is sleeved on the outer end of the plug 21. The end face head 12 presses the plug 21 and the sealing gasket 115, so that the end face and the inner hole of the plunger pump ceramic sleeve 11 are closely matched, thereby achieving a double sealing effect.

[0045] A ceramic protective sleeve 111 is wrapped around the outer end of a plunger pump ceramic sleeve 11 made of ceramic to protect the plunger pump ceramic sleeve 11 from being broken and shattered. An end face cover 12 is sleeved on the top of the plunger pump ceramic sleeve 11. The end face cover 12 is connected to the plunger pump ceramic sleeve 11 to wrap the plunger pump ceramic sleeve 11.

[0046] In order to make the top of the machine table 4 more concise, Figure 1-Figure 2 As shown, a mounting mechanism for fixing the plunger pump 1 is provided at the top of the machine table 4, and the mounting mechanism includes a mounting fixing plate 22, and four small columns 23 are provided at the bottom end of the mounting fixing plate 22. The bottom ends of the small columns 23 are connected to the top of the machine table 4. Two U-shaped holes 25 are provided on the mounting fixing plate 22, and the two plunger pumps 1 are respectively embedded in the two U-shaped holes 25. The small columns 23 occupy a useful space, have low processing costs, have better rigidity, better horizontality and verticality, and are more stable to install.

[0047] In this way, the plunger pump 1 is installed above the machine table 4, with fewer components above the machine table 4, which is neater and more beautiful. The structure of the plunger pump 1 is simpler, and installation and maintenance are more convenient. The production cost is also lower, and the simple structure also improves the accuracy of filling.

[0048] The metered liquid enters and exits the plunger pump 1 through different channels, such as Figure 3 , Figure 6 , Figure 7 As shown, a liquid inlet channel and a liquid outlet channel are respectively provided on both sides of the plunger pump 1, and the angle between the two channels is 120° or 180°. The two channels may be on the same plane or not. The liquid inlet channel includes an inner liquid inlet 151 opened at the outer end of the plunger pump ceramic sleeve 11, and a gasket 153 is provided at the outward end of the inner liquid inlet 151, and the gasket 153 is embedded in the gasket plane 152 at the outer end of the plunger pump ceramic sleeve 11.

[0049] The structure of the liquid outlet channel is the same as that of the liquid inlet channel. The liquid outlet channel includes an inner liquid outlet 161 opened at the outer end of the plunger pump ceramic sleeve 11. A gasket 163 is provided at the outward end of the inner liquid outlet 161. The gasket 163 is embedded in the gasket plane 162 at the outer end of the plunger pump ceramic sleeve 11.

[0050] An external liquid inlet 15 is fixedly provided at the outer end of the ceramic protective sleeve 111. The end of the external liquid inlet 15 facing the plunger pump ceramic sleeve 11 is aligned with and communicated with the internal liquid inlet 151. A tooth pattern 156 is pressed on the outer end of the external liquid inlet 15. An end of the external liquid inlet 15 away from the plunger pump ceramic sleeve 11 is provided with a liquid inlet nozzle 154. A mounting nut 155 is provided at the connection between the liquid inlet nozzle 154 and the external liquid inlet 15. The mounting nut 155 presses the liquid inlet nozzle 154 onto the external liquid inlet 15. The mounting nut 155 is connected to the external liquid inlet 15 through a thread.

[0051] An outgoing liquid outlet 16 is fixedly provided at the outer end of the ceramic protective sleeve 111. The end of the outgoing liquid outlet 16 facing the plunger pump ceramic sleeve 11 is aligned with and communicated with the inner liquid outlet 161. A second tooth pattern 166 is pressed on the outer end of the outgoing liquid outlet 16. An end of the outgoing liquid outlet 16 away from the plunger pump ceramic sleeve 11 is provided with a liquid outlet nozzle 164. A second mounting nut 165 is provided at the connection between the liquid outlet nozzle 164 and the outgoing liquid outlet 16. The second mounting nut 165 presses the liquid outlet nozzle 164 onto the outgoing liquid outlet 16. The second mounting nut 165 is connected to the outgoing liquid outlet 16 through a thread.

[0052] When metering is required, the pipe can be put on the liquid outlet nozzle 164 and the liquid inlet nozzle 154 for use. The liquid is sucked into the plunger pump 1 through the liquid inlet channel. The amount of suction can be controlled automatically. After a certain amount of liquid is sucked in, the liquid is squeezed and discharged, thereby quantitatively transporting the liquid.

[0053] A slot valve metering rod 112 is provided inside the plunger pump ceramic sleeve 11, and the outer end of the slot valve metering rod 112 contacts the inner wall of the plunger pump ceramic sleeve 11. The inner wall of the plunger pump ceramic sleeve 11 and the outer end of the slot valve metering rod 112 are smooth and cooperate with each other. The bottom end of the slot valve metering rod 112 is located below the plunger pump ceramic sleeve 11, and the bottom end of the slot valve metering rod 112 is connected to a driving connecting rod 114 through a cross 113.

[0054] The purpose of using the cross 113 is to eliminate the misalignment between the slot valve metering rod 112 and the driving link 114, eliminate eccentric wear, and extend the service life of the plunger pump 1. The outer end of the driving link 114 is provided with a waterproof protective sleeve, which is fixed on the machine table 4. The driving link 114 passes through the machine table 4 through the waterproof protective sleeve, and the bottom end of the driving link 114 is connected to the servo drive mechanism.

[0055] In order to improve the sealing performance, Figure 3 , Figure 6 , Figure 8 As shown, an upper ring groove 131 and a lower ring groove 132 are formed at the outer end of the plunger pump ceramic sleeve 11 . The upper ring groove 131 is located above the lower ring groove 132 . O-rings are embedded inside the upper ring groove 131 and the lower ring groove 132 .

[0056] An orientation structure 133 is provided between the plunger pump ceramic sleeve 11 and the ceramic protective sleeve 111. The orientation structure 133 includes a protective sleeve milling flattening position 116 opened at the junction of the upper and lower parts of the plunger pump ceramic sleeve 11, and a ceramic grinding flattening position 117 is provided on the inner wall of the ceramic protective sleeve 111 and is engaged with the protective sleeve milling flattening position 116. After the two are engaged, the plunger pump ceramic sleeve 11 can no longer rotate relative to the ceramic protective sleeve 111, thereby playing a fixing role.

[0057] When the plunger pump ceramic sleeve 11 is inserted into the ceramic protective sleeve 111 , the O-ring matches the inner hole of the ceramic protective sleeve 111 , which plays a role in positioning, ensuring concentricity and preventing the plunger pump ceramic sleeve 11 from shaking.

[0058] In order to stably fix the plunger pump 1 on 202, as shown in FIG. Figure 1 , Figure 2 , Figure 9-10 As shown, a pressure plate 28 is provided on one side of the mounting plate 22 through a fastening screw 29, and the pressure plate 28 presses and fixes the plunger pump 1 on the mounting plate 22. A plunger mounting position 17 is provided at the outer end of the ceramic protective sleeve 111. The outer end of the plunger mounting position 17 is processed into four parts: plunger sleeve milling flat position 18, plunger sleeve milling flat position 2 19, plunger sleeve milling flat position 3 110 and plunger sleeve arc surface 1011. The inner wall of the U-shaped hole 25 is processed into three parts: side fixing surface 1 26, arc surface 24 and side fixing surface 27.

[0059] During installation, the plunger installation fixing position 17 of the plunger pump 1 is partially inserted into the U-shaped hole 25, the plunger sleeve milling flat position 19 fits with the side fixing surface 27, the plunger sleeve milling flat position 18 fits with the side fixing surface 1 26, the plunger sleeve arc surface 1011 fits with the arc surface 24, and the plunger sleeve milling flat position 3 110 fits with the pressure plate 28, thereby tightly fixing the plunger pump 1 on the installation fixing plate 22.

[0060] The structure driving the piston pump 1 is hidden under the machine table 4, as shown in FIG. Figure 1 , Figure 2 , Figure 5 As shown, the servo drive mechanism includes two drive modules 31 arranged at the bottom of the machine table 4. The drive modules 31 need to correspond to the plunger pumps 1 one by one. Therefore, the number of drive modules 31 can also be one or more, and their number and arrangement are the same as the number and arrangement of the plunger pumps 1. A slide 32 is provided on the drive module 31, and a screw rod 34 is provided on the drive module 31. The rotation of the screw rod 34 can drive the slide 32 to move linearly up and down, and the stroke is between 40-250mm. A servo motor 33 for driving the screw rod 34 to rotate is provided at the bottom of the drive module 31.

[0061] A supporting plate 35 is fixedly provided on the slide 32 , a servo motor 36 is fixedly provided at the bottom end of the supporting plate 35 , and the servo motor 36 is connected to the bottom end of the driving link 114 .

[0062] By rotating the servo motor 36 at a certain angle, such as 60°, 90°, 120°, 180°, etc., the slot valve metering rod 112 can make a reciprocating switching motion between the external liquid inlet 15 and the external liquid outlet 16. The servo motor 1 33 rotates forward and reversely, and drives the slide 32 through the screw rod 34. The support plate 35 and the driving connecting rod 114 installed on the slide 32 can move linearly up and down together to realize the up and down linear motion of the slot valve metering rod 112, thereby realizing the change in the size of the volume of the inner cavity of the plunger pump 1 and realizing the filling function of the plunger pump 1. This driving method makes the components on the top of the machine table 4 fewer and more beautiful, removes the large components on the top of the machine table 4, eliminates the turbulence that damages the clean environment of the filling area, and there is no driving friction on the machine table 4, no dust is generated, the cleanliness level of the filling area is improved, the pollution risk of the machine using lubricating grease is eliminated, and the operating noise is reduced.

[0063] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A novel plunger pump driving structure, comprising a machine table (4) and two plunger pumps (1), wherein the two plunger pumps (1) are both located above the machine table (4), and a servo driving mechanism is provided below the machine table (4), characterized in that: The plunger pump (1) comprises a plunger pump ceramic sleeve (11), wherein the lower end of the plunger pump ceramic sleeve (11) is provided with a ceramic protective sleeve (111); The upper end of the plunger pump ceramic sleeve (11) is provided with an end face seal (12); the bottom end of the end face seal (12) and the top end of the ceramic protective sleeve (111) are connected via a connecting nut (14); a sealing structure (13) is provided inside the end face seal (12); the sealing structure (13) comprises a plug (21) located inside the end face seal (12); and a sealing gasket (115) is provided on the outer end of the plug (21); A mounting mechanism for fixing the plunger pump (1) is provided at the top of the machine table (4), the mounting mechanism comprising a mounting fixing plate (22), a small column (23) being provided at the bottom end of the mounting fixing plate (22), a U-shaped hole (25) being provided on the mounting fixing plate (22), and the plunger pump (1) is embedded in the U-shaped hole (25).

2. The novel plunger pump driving structure according to claim 1 is characterized in that: The plunger pump (1) is provided with a liquid inlet channel and a liquid outlet channel on both sides, the liquid inlet channel comprises an inner liquid inlet (151) provided at the outer end of the plunger pump ceramic sleeve (11), a gasket 1 (153) is provided at the outward end of the inner liquid inlet (151), and the gasket 1 (153) is embedded in the gasket plane 1 (152) at the outer end of the plunger pump ceramic sleeve (11); The liquid outlet channel and the liquid inlet channel have the same structure. The liquid outlet channel comprises an inner liquid outlet (161) provided at the outer end of the plunger pump ceramic sleeve (11). A second gasket (163) is provided at the outward end of the inner liquid outlet (161). The second gasket (163) is embedded in a second gasket plane (162) at the outer end of the plunger pump ceramic sleeve (11).

3. The novel plunger pump driving structure according to claim 2 is characterized in that: An external liquid inlet (15) is fixedly provided at the outer end of the ceramic protective sleeve (111); an end of the external liquid inlet (15) facing the plunger pump ceramic sleeve (11) is aligned with and communicated with the internal liquid inlet (151); a tooth pattern (156) is pressed on the outer end of the external liquid inlet (15); an end of the external liquid inlet (15) away from the plunger pump ceramic sleeve (11) is provided with a liquid inlet nozzle (154); a mounting nut (155) is provided at the connection between the liquid inlet nozzle (154) and the external liquid inlet (15); The outer end of the ceramic protective sleeve (111) is fixedly provided with an outgoing liquid port (16); the end of the outgoing liquid port (16) facing the plunger pump ceramic sleeve (11) is aligned with and communicated with the inner liquid port (161); the outer end of the outgoing liquid port (16) is pressed with a second tooth pattern (166); the end of the outgoing liquid port (16) away from the plunger pump ceramic sleeve (11) is provided with a liquid outlet nozzle (164); the connection between the liquid outlet nozzle (164) and the outgoing liquid port (16) is provided with a second mounting nut (165); the second mounting nut (165) presses the liquid outlet nozzle (164) onto the outgoing liquid port (16); and the second mounting nut (165) is connected to the outgoing liquid port (16) via a thread.

4. The novel plunger pump driving structure according to claim 1 is characterized in that: A slot valve metering rod (112) is provided inside the plunger pump ceramic sleeve (11); the outer end of the slot valve metering rod (112) contacts the inner wall of the plunger pump ceramic sleeve (11); the bottom end of the slot valve metering rod (112) is located below the plunger pump ceramic sleeve (11); and the bottom end of the slot valve metering rod (112) is connected to a driving connecting rod (114) via a cross-joint (113).

5. The novel plunger pump driving structure according to claim 1 is characterized in that: An upper ring groove (131) and a lower ring groove (132) are formed at the outer end of the plunger pump ceramic sleeve (11), and O-rings are embedded inside the upper ring groove (131) and the lower ring groove (132); An orientation structure (133) is provided between the plunger pump ceramic sleeve (11) and the ceramic protective sleeve (111), the orientation structure (133) comprising a protective sleeve milling flattening position (116) provided at the junction of the upper and lower parts of the plunger pump ceramic sleeve (11), and a ceramic grinding flattening position (117) engaged with the protective sleeve milling flattening position (116) provided on the inner wall of the ceramic protective sleeve (111).

6. The novel plunger pump driving structure according to claim 1 is characterized in that: A pressure plate (28) is provided on one side of the mounting plate (22) via a fastening screw (29), and the pressure plate (28) presses and fixes the plunger pump (1) on the mounting plate (22).

7. The novel plunger pump driving structure according to claim 4 is characterized in that: The servo drive mechanism comprises two drive modules (31) arranged at the bottom of the machine table (4), a slide (32) being provided on the drive module (31), a screw rod (34) being provided on the drive module (31), and a servo motor (33) for driving the screw rod (34) to rotate being provided at the bottom end of the drive module (31).

8. The novel plunger pump driving structure according to claim 7 is characterized in that: A supporting plate (35) is fixedly provided on the slide (32), and a second servo motor (36) is fixedly provided at the bottom end of the supporting plate (35).

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