A multi-stage speed-adjustable double-head twin-screw pump

Abstract

The present invention relates to the technical field of double-headed twin-screw pumps, and discloses a multi-stage adjustable speed double-headed twin-screw pump, comprising a pump body, wherein the left end of the pump body is fixedly connected to an adjustment mechanism, the top of the adjustment mechanism is fixedly connected to an operating mechanism, and the top of the pump body is fixedly connected to a disassembly mechanism; the telescopic assembly comprises a support seat, wherein the support seat is fixedly connected to the left end of the pump body, the left side of the support seat is fixedly connected to a support vertical plate, the front and rear ends of the support vertical plate are respectively rotatably connected to long rods, and the right end of the long rod is fixedly connected to a cross block. In the multi-stage adjustable speed double-headed twin-screw pump, the positioning ring performs a corresponding rotation under the limiting support of the L-shaped round piece, and furthermore, when adjusting the flow rate and flow inside the pump body, one of the rectangular strips can be adjusted independently and arbitrarily, thereby performing independent flow adjustment and control inside the pump body, and the operation is convenient and fast, and easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of double-headed twin-screw pumps, in particular to a multi-stage speed-adjustable double-headed twin-screw pump. Background Art

[0002] The double-headed twin-screw pump is a pump with strong self-priming ability. It can transport various complex working conditions and materials containing solid particles, gas-liquid mixtures, high viscosity, low viscosity, etc., thereby improving efficiency and reducing costs. The double-headed twin-screw pump has the characteristics of no pulse phenomenon, no particle damage, high pressure, wide speed range, and large flow range. These characteristics make it have a wide range of uses and advantages in industrial applications.

[0003] According to announcement number CN205714748U, a multi-stage, speed-adjustable, double-headed, twin-screw pump is disclosed, which includes a pump body, a first-stage active screw and a first-stage driven screw passing through the first-stage screw pump chamber of the pump body, a second-stage active screw and a second-stage driven screw passing through the second-stage screw pump chamber of the pump body, and a third-stage active screw and a third-stage driven screw passing through the third-stage screw pump chamber of the pump body.

[0004] The multi-stage speed-adjustable double-headed twin-screw pump, when in use, allows the active screw and the driven screw to rotate and mesh to form a volume change to continuously suck in the medium, and the power of each stage of the screw is transmitted by the sprocket. By adjusting the transmission ratio of the sprocket, the pressure and flow requirements at the discharge end are guaranteed; the utility model has the advantages of increasing service life and preventing leakage, but it is not convenient to perform corresponding adjustment and control operations during use, so the solution needs to be improved accordingly. Summary of the Invention

[0005] The object of the present invention is to provide a multi-stage speed-adjustable double-head twin-screw pump to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-stage speed-adjustable double-head twin-screw pump, comprising a pump body, an adjustment mechanism fixedly connected to the left end of the pump body, an operating mechanism fixedly connected to the top of the adjustment mechanism, and a disassembly mechanism fixedly connected to the top of the pump body;

[0007] The adjustment mechanism includes a telescopic component and a locking component, and the locking component is arranged on one side of the telescopic component;

[0008] The telescopic assembly includes a support seat, which is fixedly connected to the left end of the pump body, a support vertical plate fixedly connected to the left side of the support seat, and a long rod rotatably connected to the front and rear ends of the support vertical plate respectively, and a cross block fixedly connected to the right end of the long rod, a support shaft slidably connected to the surface of the cross block, a T-shaped round rod rotatably connected to the surface of the support shaft, and a transmission wheel fixedly connected to the left end of the long rod surface. There are two transmission wheels, and the surfaces of the two transmission wheels are connected with transmission belts for transmission. The left end of the long rod is fixedly connected to a handwheel.

[0009] According to the above technical solution, a limiting slot is opened inside the support shaft, the surface of the cross block is slidingly connected to the inside of the limiting slot, a rotating hole is opened inside the left end of the support vertical plate, and the surface of the long rod is rotatably connected to the inside of the rotating hole.

[0010] According to the above technical solution, the positioning assembly includes a limiting cylinder, which is arranged inside the right end of the support seat, and the surface of the limiting cylinder is rotatably connected to a screw rod, and the surface of the screw rod is threadedly connected to a support cylinder, and the front and rear ends of the screw rod are respectively fixedly connected to connecting blocks, and the surface of the connecting block is fixedly connected to a positioning ring, and the surface of the positioning ring is rotatably connected to an L-shaped round piece, one end of the L-shaped round piece is fixedly connected to the left side of the pump body, and the left end of the pump body is fixedly connected to a T-shaped cylinder, the interior of the T-shaped cylinder is tightly fitted with the interior of the screw rod, the surface of the screw rod is fixedly connected to the support ring, and the right end of the support ring is fixedly connected to a clamping strip, the front and rear ends of the support cylinder are respectively fixedly connected to rectangular bars, and the right end of the support cylinder is fixedly connected to the valve core.

[0011] According to the above technical solution, a positioning hole is provided inside the positioning ring, and a card strip is provided at the right end of the card strip, and the surface of the card strip matches the inside of the positioning hole.

[0012] According to the above technical solution, a circular cavity is opened at the left end of the pump body, the surface of the support cylinder is slidably connected to the inside of the circular cavity, rectangular grooves are opened at the front and rear ends of the circular cavity respectively, and the surface of the rectangular strip is slidably connected to the inside of the rectangular groove.

[0013] The top end of the first spring is fixedly connected to the circular ring, and the top end of the circular ring is rotatably connected to the top end of the I-shaped block.

[0014] According to the above technical solution, a sliding groove is opened inside the sliding seat, the surface of the T-shaped block is slidingly connected to the inside of the sliding groove, the right end of the threaded rod is rotationally connected to the right side inside the sliding seat, a socket is opened inside the top of the T-shaped plate, and the bottom end of the vertical rod surface matches the inside of the socket.

[0015] According to the above technical solution, a through hole is provided at the top of the I-shaped block, the surface of the vertical rod passes through the through hole at the top of the I-shaped block, a tooth groove is provided at one end of the supporting side plate, and the surface of the shift rod matches the inside of the tooth groove.

[0016] According to the above technical solution, the disassembly and assembly mechanism includes a base plate, which is fixedly connected to the top of the pump body, a support plate is provided on the top of the base plate, a T-valve tube is fixedly connected to the top of the support plate, a side block is fixedly connected to the left end of the top of the T-valve tube, a second spring is fixedly connected to the left end of the side block, a vertical bar is fixedly connected to the left end of the second spring, an insertion rod is fixedly connected to the bottom end of the vertical bar, and a T-shaped rod is fixedly connected to the inside of the side block.

[0017] According to the above technical solution, a sliding hole is provided inside the vertical bar, the surface of the T-shaped rod is slidably connected to the inside of the sliding hole, a mounting hole is provided inside the left end of the bottom plate, and the surface of the insertion rod is plugged into the inside of the mounting hole.

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

[0019] 1. The multi-stage adjustable speed double-head twin-screw pump, through the provided adjustment mechanism, the card strip moves and correspondingly disengages from the blocking effect inside the positioning ring, and at this time the positioning ring performs a corresponding rotation effect under the limiting support effect of the L-shaped round piece, and thus, when adjusting the flow rate and flow inside the pump body, one of the rectangular strips can be adjusted separately and arbitrarily, thereby performing a separate adjustment and control effect on the flow inside the pump body, and the operation is convenient and fast, and easy to use, so that corresponding adjustment and control operations are convenient when in use.

[0020] 2. The multi-stage speed-adjustable double-headed twin-screw pump, through the provided adjustment mechanism, rotates one of the hand wheels and drives the long rod to rotate accordingly under the support limit inside the support shaft. During the rotation process, the cross block at one end of the long rod drives the support shaft to rotate inside the support shaft, and then drives the card bar to rotate, drives the positioning ring to rotate, thereby driving the screw rod to rotate accordingly under the limit support inside the T-shaped cylinder, and drives the support cylinder to slide accordingly under the limit action of the rectangular bar inside the pump body, thereby driving the valve core at one end of the support cylinder to move, change the movement under the limit action inside the pump body, and finally the flow rate of the flow inside the pump body can be adjusted.

[0021] 3. This multi-stage speed-adjustable double-head twin-screw pump, through the provided operating mechanism, when the T-shaped plate moves, drives the T-shaped round rod at its bottom end to move and drives the support shaft to move, and finally drives the valve core to move and adjust. In addition, when performing individual control, pulling one of the dial rings to move upward, and then driving the dial rod to move upward, drives the first spring to elastically compress and change, thereby correspondingly driving the vertical rod to disengage from the internal position of the T-shaped plate, and then rotating the dial rod so that one end of it is stuck in the internal position of the support side plate for a locking effect, thereby achieving the effect of disengaging the vertical rod and facilitating the flow control and adjustment of the pump body.

[0022] 4. This multi-stage speed-adjustable double-head twin-screw pump can disassemble and clean the T-valve tube through the disassembly and assembly mechanism. The vertical bar can be pulled open to move under the limit of the T-shaped rod surface, and then the plug rod can be driven to move and disengage from the internal position of the left end of the bottom plate under the support of the side block, so that the T-valve tube can be disassembled and the maintenance operation inside the pump body can be facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a three-dimensional diagram of the structure of the present invention;

[0025] Figure 2 This is a three-dimensional diagram of the structural adjustment mechanism of the present invention;

[0026] Figure 3 This is a three-dimensional exploded view of the telescopic component of the structure of the present invention;

[0027] Figure 4 This is a three-dimensional exploded view of the parts of the telescopic assembly of the structure of the present invention;

[0028] Figure 5 This is a three-dimensional diagram of the structural positioning component of the present invention;

[0029] Figure 6 A three-dimensional diagram of the components of the structural positioning assembly of the present invention;

[0030] Figure 7 Two three-dimensional exploded views of the components of the structural positioning assembly of the present invention;

[0031] Figure 8 This is a three-dimensional exploded view of the operating mechanism of the structure of the present invention;

[0032] Figure 9 This is a three-dimensional exploded view of the parts of the operating mechanism of the structure of the present invention;

[0033] Figure 10 This is a three-dimensional exploded view of the disassembly and assembly mechanism of the structure of the present invention;

[0034] Figure 11 This is a three-dimensional exploded view of the parts of the disassembly and assembly mechanism of the present invention;

[0035] Figure 12 It is a three-dimensional cross-sectional view of the pump body of the present invention.

[0036] In the figure: 1. Pump body; 2. Adjustment mechanism; 21. Telescopic assembly; 211. Support seat; 212. Support vertical plate; 213. Long rod; 214. Cross block; 215. Support shaft; 216. T-shaped round rod; 217. Drive wheel; 218. Drive belt; 219. Handwheel; 22. Positioning assembly; 221. Limiting cylinder; 222. Screw rod; 223. Connecting block; 224. Positioning ring; 225. T-shaped cylinder; 226. Support cylinder; 227. L-shaped round piece; 228. Support ring; 229 , card strip; 2291, rectangular strip; 2292, valve core; 3, operating mechanism; 31, slide seat; 32, motor; 33, threaded rod; 34, T-shaped block; 341, T-shaped plate; 35, I-shaped block; 351, supporting side plate; 36, vertical rod; 37, shift rod; 371, first spring; 38, circular ring; 39, shift ring; 4, disassembly and assembly mechanism; 41, bottom plate; 42, support plate; 43, T valve tube; 44, vertical strip; 45, second spring; 46, T-shaped rod; 47, side block; 48, plug rod. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0038] The present invention provides the following technical solutions: Example 1

[0039] Combine Figures 2 to 12 A multi-stage speed-adjustable double-head twin-screw pump comprises a pump body 1, an adjusting mechanism 2 is fixedly connected to the left end of the pump body 1, an operating mechanism 3 is fixedly connected to the top of the adjusting mechanism 2, and a disassembly mechanism 4 is fixedly connected to the top of the pump body 1;

[0040] The adjustment mechanism 2 includes a telescopic component 21 and a locking component 22, and the locking component 22 is arranged on one side of the telescopic component 21;

[0041] The telescopic assembly 21 includes a support seat 211, which is fixedly connected to the left end of the pump body 1. A support vertical plate 212 is fixedly connected to the left side of the support seat 211. The front and rear ends of the support vertical plate 212 are rotatably connected to a long rod 213. The right end of the long rod 213 is fixedly connected to a cross block 214. The surface of the cross block 214 is slidably connected to a support shaft 215. The surface of the support shaft 215 is rotatably connected to a T-shaped round rod 216. The left end of the surface of the long rod 213 is fixedly connected to a transmission wheel 217. There are two transmission wheels 217. The surfaces of the two transmission wheels 217 are connected to transmission belts 218 for transmission. The left end of the long rod 213 is fixedly connected to a handwheel 219. A limiting slot is provided inside the support shaft 215. The surface of the cross block 214 is slidably connected to the inside of the limiting slot. A rotating hole is provided inside the left end of the support vertical plate 212. The surface of the long rod 213 is rotatably connected to the inside of the rotating hole. Component 22 includes a limiting cylinder 221, which is arranged inside the right end of the support seat 211, and a screw rod 222 is rotatably connected to the surface of the limiting cylinder 221, and a support cylinder 226 is threadedly connected to the surface of the screw rod 222, and the front and rear ends of the screw rod 222 are respectively fixedly connected to the connecting blocks 223, and the surface of the connecting block 223 is fixedly connected to the positioning ring 224, and the surface of the positioning ring 224 is rotatably connected to the L-shaped round piece 227, one end of the L-shaped round piece 227 is fixedly connected to the left side of the pump body 1, and a T-shaped cylinder 225 is fixedly connected to the left end of the pump body 1, and the interior of the T-shaped cylinder 225 is tightly fitted with the interior of the screw rod 222, and a support ring 228 is fixedly connected to the surface of the screw rod 222, and the right end of the support ring 228 is fixedly connected to the card strip 229, the front and rear ends of the support cylinder 226 are respectively fixedly connected to the rectangular bar 2291, and the right end of the support cylinder 226 is fixedly connected to the valve core 2292.

[0042] Furthermore, a positioning hole is opened inside the positioning ring 224, and a card strip is provided at the right end of the card strip 229, the surface of the card strip matches the inside of the positioning hole, a circular cavity is opened at the left end inside the pump body 1, the surface of the support cylinder 226 is slidably connected to the inside of the circular cavity, rectangular grooves are opened at the front and rear ends of the circular cavity respectively, the surface of the rectangular strip 2291 is slidably connected to the inside of the rectangular groove, and the positioning ring 224 performs corresponding rotation under the limiting support of the L-shaped round part 227, and then when adjusting the flow rate and flow inside the pump body 1, one of the rectangular strips 2291 can be adjusted separately, thereby performing a separate adjustment and control function on the flow inside the pump body 1, and it is convenient and quick to operate and easy to use. Example 2

[0043] See Figure 1-12The top of the first lever 31 is fixedly connected to the top of the support base 211, the left end of the lever 31 is fixedly connected to the motor 32, the right end of the motor 32 is threadedly connected to the threaded rod 33, the surface of the threaded rod 33 is threadedly connected to a T-shaped block 34, the front and rear ends of the T-shaped block 34 are respectively fixedly connected to the T-shaped plate 341, the bottom end of the T-shaped plate 341 is fixedly connected to the top of the T-shaped round rod 216, the top of the T-shaped block 34 is fixedly connected to the I-shaped block 35, the front and rear sides of the I-shaped block 35 are respectively fixedly connected to the supporting side plates 351, the upper and lower ends of the I-shaped block 35 are respectively slidably connected to the vertical rod 36, the top of the vertical rod 36 is fixedly connected to the dial ring 39, the surface of the vertical rod 36 is rotatably connected to the dial rod 37, the top of the dial rod 37 is fixedly connected to the first spring 371, the top of the first spring 371 is fixedly connected to the ring 38, and the top of the ring 38 is rotatably connected to the top of the inner top of the I-shaped block 35.

[0044] Furthermore, a slide groove is provided inside the slide seat 31, and the surface of the T-shaped block 34 is slidably connected to the inside of the slide groove. The right end of the threaded rod 33 is rotatably connected to the right side of the slide seat 31. A socket is provided inside the top of the T-shaped plate 341, and the bottom end of the vertical rod 36 matches the inside of the socket. A through hole is provided at the top of the I-shaped block 35, and the surface of the vertical rod 36 passes through the through hole provided at the top of the I-shaped block 35. A tooth groove is provided at one end of the supporting side plate 351, and the surface of the shift rod 37 matches the inside of the tooth groove. The first spring 371 undergoes elastic compression and changes, thereby correspondingly driving the vertical rod 36 to disengage from the position inside the T-shaped plate 341. The shift rod 37 is rotated to allow one end of it to be stuck in the support side plate 351 for a locking effect, thereby disengaging the vertical rod 36 and facilitating the flow control and adjustment of the pump body 1. Example 3

[0045] See Figure 1-12 On the basis of the first embodiment, the disassembly and assembly mechanism 4 is further obtained, which includes a bottom plate 41, the bottom plate 41 is fixedly connected to the top of the pump body 1, a support plate 42 is provided on the top of the bottom plate 41, a T-valve tube 43 is fixedly connected to the top of the support plate 42, a side block 47 is fixedly connected to the left end of the top of the T-valve tube 43, a second spring 45 is fixedly connected to the left end of the side block 47, a vertical bar 44 is fixedly connected to the left end of the second spring 45, an insertion rod 48 is fixedly connected to the bottom end of the vertical bar 44, and a T-shaped rod 46 is fixedly connected to the inside of the side block 47.

[0046] Furthermore, a sliding hole is provided inside the vertical bar 44, and the surface of the T-shaped rod 46 is slidably connected to the inside of the sliding hole. A mounting hole is provided inside the left end of the bottom plate 41, and the surface of the plug rod 48 is plugged into the inside of the mounting hole. The vertical bar 44 is pulled open to move under the limiting effect of the surface of the T-shaped rod 46, and then the plug rod 48 can be driven to move and disengage from the position inside the left end of the bottom plate 41 under the support of the side block 47, so that the T-valve tube 43 can be disassembled and the maintenance operation inside the pump body 1 can be facilitated.

[0047] When the lever 224 is in engagement with the piston 226, the piston 226 is engaged with the piston 228, and the piston 229 is engaged with the piston 229. When the lever 226 is engaged with the piston 226, the piston 226 is engaged with the piston 228. When the lever 226 is engaged with the piston 226, the piston 226 is engaged with the piston 228. When the lever 226 is engaged with the piston 226, the piston 226 is engaged with the piston 228. When the lever 226 is engaged with the piston 226, the piston 226 is engaged with the piston 228. When the lever 226 is engaged with the piston 226, the piston 226 is engaged with the piston 228.

[0048] In addition, during the process of adjusting the flow rate of the flow inside the pump body 1, when it is necessary to control the flow rate of the rectangular strip 2291 individually, the limiting cylinder 221 can be allowed to move accordingly under the limiting action inside the support seat 211, thereby driving the support shaft 215 to move, driving the support ring 228 to move, driving the clamping strip 229 to move and correspondingly disengage from the clamping action inside the positioning ring 224, and at this time, the positioning ring 224 performs a corresponding rotation action under the limiting support action of the L-shaped round piece 227, and thus, when adjusting the flow rate inside the pump body 1, one of the rectangular strips 2291 can be adjusted individually, thereby performing the function of individually adjusting and controlling the flow rate inside the pump body 1, and the operation is convenient and fast, and easy to use;

[0049] In addition, during the specific adjustment process, when the two valve cores 2292 are adjusted at the same time, the motor 32 is started to drive the threaded rod 33 to rotate, which drives the T-shaped block 34 to move, and then drives the T-shaped plate 341 to move, drives the T-shaped round rod 216 at its bottom end to move and drives the support shaft 215 to move, and finally drives the valve core 2292 to move and adjust. In addition, when performing individual control, one of the dial rings 39 is pulled to move upward, and then drives the dial rod 37 to move upward, drives the first spring 371 to elastically compress and change, thereby correspondingly driving the vertical rod 36 to disengage from the internal position of the T-shaped plate 341, and then rotates the dial rod 37 to allow one end of it to be stuck in the internal position of the support side plate 351 for a blocking effect, thereby disengaging the vertical rod 36 and facilitating the flow control and adjustment of the pump body 1;

[0050] In addition, when repairing the interior of the pump body 1, the T-valve tube 43 can be disassembled and cleaned, and the vertical bar 44 can be pulled open to move under the limiting effect of the surface of the T-shaped rod 46, and then the insertion rod 48 can be driven to move and disengage from the position inside the left end of the bottom plate 41 under the support of the side block 47, so that the T-valve tube 43 can be disassembled and the maintenance operation inside the pump body 1 can be facilitated.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-stage speed-adjustable double-head twin-screw pump, comprising a pump body (1), characterized in that: The left end of the pump body (1) is fixedly connected to an adjusting mechanism (2), the top of the adjusting mechanism (2) is fixedly connected to an operating mechanism (3), and the top of the pump body (1) is fixedly connected to a disassembly mechanism (4); The adjustment mechanism (2) comprises a telescopic component (21) and a locking component (22), wherein the locking component (22) is arranged on one side of the telescopic component (21); The telescopic assembly (21) includes a support seat (211), the support seat (211) is fixedly connected to the left end of the pump body (1), the left side of the support seat (211) is fixedly connected to a support vertical plate (212), the front and rear ends of the support vertical plate (212) are rotatably connected to a long rod (213), the right end of the long rod (213) is fixedly connected to a cross block (214), the surface of the cross block (214) is slidably connected to a support shaft (215), the surface of the support shaft (215) is rotatably connected to a T-shaped round rod (216), the left end of the surface of the long rod (213) is fixedly connected to a transmission wheel (217), there are two transmission wheels (217), the surfaces of the two transmission wheels (217) are connected to transmission belts (218), and the left end of the long rod (213) is fixedly connected to a hand wheel (219); A limiting slot is provided inside the support shaft (215), the surface of the cross block (214) is slidably connected to the inside of the limiting slot, a rotating hole is provided inside the left end of the support vertical plate (212), and the surface of the long rod (213) is rotatably connected to the inside of the rotating hole; The positioning assembly (22) includes a limiting cylinder (221), which is arranged inside the right end of the support seat (211), and a screw rod (222) is rotatably connected to the surface of the limiting cylinder (221), and a support cylinder (226) is threadedly connected to the surface of the screw rod (222). The front and rear ends of the screw rod (222) are respectively fixedly connected to connecting blocks (223), and a positioning ring (224) is fixedly connected to the surface of the connecting block (223). The surface of the positioning ring (224) is rotatably connected to the surface of the L-shaped round piece (227). One end of the L-shaped round piece (227) is fixedly connected to the left side of the pump body (1); a T-shaped cylinder (225) is fixedly connected to the interior of the left end of the pump body (1); the interior of the T-shaped cylinder (225) is tightly fitted with the interior of the screw rod (222); a support ring (228) is fixedly connected to the surface of the screw rod (222); a clamping strip (229) is fixedly connected to the right end of the support ring (228); a rectangular strip (2291) is fixedly connected to the front and rear ends of the support cylinder (226); and a valve core (2292) is fixedly connected to the right end of the support cylinder (226); The operating mechanism (3) comprises a slide (31), the slide (31) being fixedly connected to the top of the support seat (211), the left end of the slide (31) being fixedly connected to a motor (32), the right end of the motor (32) being threadedly connected to a threaded rod (33), the surface of the threaded rod (33) being threadedly connected to a T-shaped block (34), the front and rear ends of the T-shaped block (34) being fixedly connected to a T-shaped plate (341), the bottom end of the T-shaped plate (341) being fixedly connected to the top of the T-shaped round rod (216), the top of the T-shaped block (34) being fixedly connected to a working The I-shaped block (35) is fixedly connected to supporting side plates (351) on both the front and rear sides of the I-shaped block (35), and vertical rods (36) are slidably connected to the interior of the upper and lower ends of the I-shaped block (35). The top of the vertical rod (36) is fixedly connected to a shift ring (39). The surface of the vertical rod (36) is rotatably connected to a shift rod (37). The top of the shift rod (37) is fixedly connected to a first spring (371). The top of the first spring (371) is fixedly connected to a circular ring (38). The top of the circular ring (38) is rotatably connected to the top of the interior of the I-shaped block (35). The disassembly and assembly mechanism (4) includes a bottom plate (41), the bottom plate (41) is fixedly connected to the top of the pump body (1), a support plate (42) is provided on the top of the bottom plate (41), a T-valve tube (43) is fixedly connected to the top of the support plate (42), a side block (47) is fixedly connected to the left end of the top of the T-valve tube (43), a second spring (45) is fixedly connected to the left end of the side block (47), a vertical bar (44) is fixedly connected to the left end of the second spring (45), a plug rod (48) is fixedly connected to the bottom end of the vertical bar (44), and a T-shaped rod (46) is fixedly connected to the inside of the side block (47).

2. A multi-stage speed-adjustable double-head twin-screw pump according to claim 1, characterized in that: A positioning hole is provided inside the positioning ring (224), and a card strip is provided at the right end of the card strip (229), wherein the surface of the card strip matches the inside of the positioning hole.

3. The multi-stage speed-adjustable double-head twin-screw pump according to claim 1, characterized in that: A circular cavity is provided at the left end of the interior of the pump body (1), the surface of the support cylinder (226) is slidably connected to the interior of the circular cavity, rectangular grooves are provided at the front and rear ends of the interior of the circular cavity, and the surface of the rectangular strip (2291) is slidably connected to the interior of the rectangular groove.

4. A multi-stage speed-adjustable double-head twin-screw pump according to claim 1, characterized in that: A slide groove is provided inside the slide seat (31), the surface of the T-shaped block (34) is slidably connected to the inside of the slide groove, the right end of the threaded rod (33) is rotatably connected to the right side inside the slide seat (31), a socket is provided inside the top end of the T-shaped plate (341), and the bottom end of the surface of the vertical rod (36) matches the inside of the socket.

5. The multi-stage speed-adjustable double-head twin-screw pump according to claim 1, characterized in that: A through hole is provided at the top of the interior of the I-shaped block (35), a surface of the vertical rod (36) passes through the through hole provided at the top of the interior of the I-shaped block (35), a tooth groove is provided at one end of the supporting side plate (351), and a surface of the shifting rod (37) matches the interior of the tooth groove.

6. The multi-stage speed-adjustable double-head twin-screw pump according to claim 1, characterized in that: A sliding hole is provided inside the vertical bar (44), and the surface of the T-shaped rod (46) is slidably connected to the inside of the sliding hole. A mounting hole is provided inside the left end of the bottom plate (41), and the surface of the insertion rod (48) is plugged into the inside of the mounting hole.

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