Small ground pump for cement feeding

Abstract

The application relates to the technical field of concrete pumps, and discloses a small concrete pump for cement feeding, which comprises a vehicle frame and a conveying pump installed at the bottom of the inner cavity of the vehicle frame. An oil motor is installed on the right wall of the conveying pump, two hydraulic oil pipes are arranged at the rear end of the oil motor, a hopper fixedly connected to the vehicle frame is installed at the upper end of the conveying pump, driving bins are arranged on the left and right sides of the top of the hopper, partition plates are fixedly connected to the front and rear sides of the inner wall of the top of the hopper, elastic rod frames are slidably inserted into the inner wall of the top of the hopper, and a plurality of L-shaped screen rods arranged linearly are fixedly connected to the bottom of the front and rear ends of the elastic rod frames. The application can quickly control the dispersion and screening of cement concrete, avoid the accumulation and overflow of the cement concrete, stably control the output flow of the cement concrete, improve the construction efficiency, ensure the timely and reliable treatment of bad components, and drive the hydraulic system of a tank truck, so that an independent power source is not needed, the application is especially suitable for temporary and scattered small pouring tasks, and is convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete pumps, in particular to a small ground pump for cement feeding. BACKGROUND

[0002] The concrete delivery pump, also known as a concrete pump, is an engineering machinery that delivers cement concrete along the pipeline to the construction site. The concrete delivery pump is composed of a pump body and a delivery pipe, and is mainly used in house building, bridge and tunnel construction, and agricultural infrastructure construction. The concrete delivery pump can be divided into a sky pump and a ground pump. The sky pump has a telescopic arm support and can realize long-distance and high-altitude material distribution without laying a large number of pipelines, and is more suitable for large-scale construction sites (such as high-rise buildings and large workshops) for large-area and high-height concrete pouring, and has higher efficiency but higher equipment cost and operation threshold. The ground pump is small in size and light in weight, and is more suitable for indoor, narrow space or small volume engineering, and needs to be matched with a pipeline for fixed delivery, and has lower cost.

[0003] The utility model discloses a concrete delivery pump in the technical field of concrete pump is disclosed in patent No. CN222717013U, including concrete delivery pump machine, the outer wall on one side of concrete delivery pump machine installs the hopper, the inner wall below on one side of hopper installs the mounting seat, the outer wall on one side of hopper installs the feeding box above.

[0004] The concrete delivery pump in the above patent, when in use, by spring, vibration machine, inclined plate and filter plate are matched and used, after the cement concrete material is poured into the hopper, the filter plate is used for filtering treatment, during which the spring and the vibration machine are matched, the large-sized sand and stone in the cement concrete material can be separated and treated, and the large-sized sand and stone filtered out can automatically slide to the inclined plate on one side through the inclined filter plate to realize collection. However, in actual use, since the inclination of the filter plate is not large, the cement concrete poured into the hopper is easy to gather in a pile, and only relies on vibration to disperse by gravity, so the screening speed is slow. When there are components with deep degree of caking or large-sized sand and stone in the cement concrete, they cannot be quickly separated and moved to the inclined plate for waste collection, thereby affecting the filtering efficiency of the cement concrete. Moreover, when there are components with deep degree of caking, it is difficult to control the breaking and dispersion thereof, so they are also easy to be delivered to the inclined plate for waste collection, causing waste of concrete and occupying space for subsequent collection of sand and stone. SUMMARY

[0005] The present application aims to solve the problems of low screening efficiency of cement concrete and unreliable treatment of poor components of cement concrete in general concrete delivery pumps in use, and provides a small ground pump for cement feeding.

[0006] In order to achieve the above-mentioned purpose, the present application specifically adopts the following technical scheme:

[0007] The utility model provides a small ground pump for cement feeding, including frame and the conveying pump of installation in the bottom of frame inner chamber, oil motor is installed to the right wall of conveying pump, two hydraulic oil pipes are arranged at the rear end of oil motor, the upper end of conveying pump is installed the hopper of fixed connection in frame, the top left and right sides of hopper are provided with the drive bin, the top inner wall of hopper is fixedly connected with the baffle of front and back, the top inner wall of hopper is slidably inserted with the elastic pole frame, the bottom of the front and back two ends of elastic pole frame is fixedly connected with the linearly arranged a plurality of L type screen rods, the top inner wall of hopper is slidably inserted with the U type pole frame, drive assembly is arranged between the drive bin and conveying pump and drives the swing of elastic pole frame and U type pole frame,

[0008] The baffle is slidably connected between the front and back two ends of the elastic pole frame and the baffle, the outer wall of the baffle is slidably connected with the crushing plate, the front and back walls of the inner cavity of the hopper are provided with the elastic support baffle and the adjusting assembly for moving the crushing plate up and down.

[0009] Further, the output pipe is fixedly connected to the left end of the conveying pump, the movable cavity is arranged on the right part of the conveying pump, the helical blade shaft is rotatably connected to the inner cavity of the conveying pump, the helical blade shaft is driven by the oil motor, the transmission bevel gear is fixedly sleeved on the helical blade shaft and located in the movable cavity, the two hydraulic oil pipes pass through the right wall of the frame and can be connected to the hydraulic system on the concrete tank truck.

[0010] Further, the elastic pole frame is composed of the elastic pole portions on the front and back sides and the linearly arranged longitudinal rod portions in the middle part, the U type pole frame is composed of the clamping block portions on the left and right sides and the linearly arranged horizontal rod portions in the middle part, and the longitudinal rod portions are perpendicular to the horizontal rod portions.

[0011] Further, the L type screen rod is parallel to the longitudinal rod portions in the elastic pole frame, the L type screen rod movably abuts against the inner wall of the hopper and forms a waste cavity therebetween, the cover plate is rotatably connected between the two drive bins and covers the waste cavity, and the sealing cover is rotatably installed on the top of the drive bin.

[0012] Further, the drive assembly comprises the telescopic spring tube rotatably connected to the inner walls of the two drive bins, the telescopic end of the telescopic spring tube is movably hinged to the U type pole frame, the shaft portions of the two telescopic spring tubes are fixedly connected to the connecting shaft passing through the drive bin, the right wall of the rotating portion of the right telescopic spring tube is fixedly connected to the pin post one, the inner right wall of the right drive bin is rotatably connected to the swing frame, the right wall of the right drive bin is rotatably connected to the crank bevel gear, the swing frame is movably connected to the pin post one and the crank bevel gear respectively, the bevel pinion shaft is rotatably connected between the frame and the conveying pump, and the bevel pinion shaft is meshingly connected to the crank bevel gear and the transmission bevel gear respectively.

[0013] Further, the right end of the elastic rod frame is fixedly connected with a top rod penetrating through the right wall of the hopper, a cam is fixedly sleeved on the bevel gear shaft and movably abuts against the top rod, and a ball is arranged at the top end of the top rod.

[0014] Further, the adjusting assembly comprises two tooth barrels symmetrically connected to the baffle by rotation, the baffle is slidably connected to the inner wall of the hopper, a pin column II is fixedly inserted into the tooth barrel, a sliding groove is formed in the side wall of the crushing plate and movably connected to the tooth barrel, an elastic pin column is slidably connected to the tooth barrel and rotatably connected to the inner wall of the hopper, an L-shaped elastic tooth plate is slidably connected to the front and rear walls of the hopper and meshingly connected to the elastic pin column, a guide groove is formed in the upper wall of the left end of the L-shaped rod frame and movably connected to the L-shaped pin column.

[0015] Further, the guide groove is composed of a wave groove and an inclined groove in communication in the direction away from the L-shaped pin column, and the inlet edge of the wave groove is rounded.

[0016] Further, the outer wall of the crushing plate near the bottom is sawtooth-shaped, and the upper and lower ends of the crushing plate are both provided with inclined surfaces.

[0017] Further, the adjusting assembly further comprises a tooth frame slidably connected to the inner wall of the baffle, the tooth frame is provided with tooth grooves on the left and right sides and meshingly connected to the pin column II, a rotating rod is rotatably connected to the inner wall of the baffle, a magnetic block I is fixedly connected to the middle part of the rotating rod, two spiral grooves are linearly formed on the surface of the rotating rod, a convex column is fixedly connected to the front wall of the tooth frame and movably connected to the spiral grooves, a magnetic block II is fixedly connected to the inner wall of the hopper, the magnetic block II is opposite to the magnetic block I and the opposite surfaces of the two magnetic blocks have the same magnetic pole.

[0018] The beneficial effects of the present application are as follows:

[0019] After the cement concrete falls on the elastic shaft frame in the hopper, the driving assembly drives the elastic shaft frame to vibrate and synchronously drives the U-shaped rod frame to swing, so that the cement concrete can be quickly controlled to fall on the dispersion screen, and the cement concrete is prevented from being stacked and overflowing. The U-shaped rod frame swings to push the cement concrete towards the two sides, part of the components with deep degree of caking can be vibrated by the crushing plate and squeezed and broken under the elastic support of the adjusting assembly, and the sandstone and other materials that are difficult to break are pushed down by the crushing plate controlled by the adjusting assembly after being squeezed by the baffle, and then automatically fall on the L-shaped screen rod and are separated out, so that the output flow of the cement concrete is stabilized, the construction efficiency is improved, and the timely and reliable treatment of the bad components is ensured.

[0020] The hydraulic system on the concrete truck is used to drive the oil motor, and the driving assembly and the adjusting assembly are driven by the oil motor, so that an independent power source is not needed, and the concrete truck is especially suitable for temporary and small pouring tasks, is convenient to use, and continuously and uniformly outputs the cement concrete, further stabilizes the concrete output flow, and improves the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a three-dimensional structure diagram of the small ground pump of the present application;

[0022] Figure 2 is a three-dimensional sectional view of the small ground pump frame and hopper part of the present application;

[0023] Figure 3 is a three-dimensional sectional view of the small ground pump hopper and L-shaped pin column part of the present application;

[0024] Figure 4 is a three-dimensional sectional view of the small ground pump hopper and driving bin part of the present application;

[0025] Figure 5 is a three-dimensional sectional view of the small ground pump hopper part of the present application;

[0026] Figure 6 is a three-dimensional structure diagram of the small ground pump elastic rod frame and baffle part of the present application;

[0027] Figure 7 is a three-dimensional sectional view of the small ground pump baffle and gear cylinder part of the present application;

[0028] Figure 8 is a three-dimensional structure diagram of the small ground pump elastic rod frame and U-shaped rod frame part of the present application;

[0029] Figure 9 is an explosion view of the small ground pump baffle and gear cylinder part of the present application.

[0030] Reference signs: 1, frame; 11, conveying pump; 12, output pipe; 13, spiral blade shaft; 14, transmission bevel gear; 15, oil motor; 16, hydraulic oil pipe; 2, hopper; 21, driving bin; 22, sealing cover; 23, partition plate; 24, cover plate; 3, elastic rod frame; 31, L-shaped sieve rod; 32, jacking rod; 4, U-shaped rod frame; 41, L-shaped pin column; 5, telescopic spring pipe; 51, connecting shaft; 52, pin column one; 53, swing frame; 54, crank bevel gear; 55, bevel gear shaft; 56, cam; 6, baffle; 61, crushing plate; 62, gear cylinder; 63, pin column two; 64, elastic tooth column; 65, elastic tooth plate; 66, guide groove; 7, rotating rod; 71, magnetic block one; 72, spiral groove; 73, tooth frame; 74, convex column; 75, magnetic block two. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] Example 1, as Figures 1-9 As shown, a small ground pump for cement feeding includes a frame 1 and a conveying pump 11 installed at the bottom of the inner cavity of the frame 1. A hydraulic motor 15 is installed on the right wall of the conveying pump 11. Two hydraulic oil pipes 16 are provided at the rear end of the hydraulic motor 15. A hopper 2 is fixedly connected to the frame 1 at the upper end of the conveying pump 11. Drive chambers 21 are provided on the left and right sides of the top of the hopper 2. Baffles 23 are fixedly connected to the front and rear sides of the inner wall of the top of the hopper 2. A spring rod frame 3 is slidably inserted into the inner wall of the top of the hopper 2. Several L-shaped screen rods 31 are linearly arranged and fixedly connected to the bottom of the front and rear ends of the spring rod frame 3. A U-shaped rod frame 4 is slidably inserted into the inner wall of the top of the hopper 2. A drive assembly for swinging the spring rod frame 3 and the U-shaped rod frame 4 is provided between the drive chamber 21 and the conveying pump 11.

[0033] Both ends of the elastic rod frame 3 are slidably connected to the partition plate 23 with baffles 6. The outer wall of the baffles 6 is slidably engaged with the crushing plate 61. The inner walls of the hopper 2 are equipped with elastic support baffles 6 and adjustment components that drive the crushing plate 61 to move up and down.

[0034] The left end of the delivery pump 11 is fixedly connected to the output pipe 12, and the right side of the delivery pump 11 is provided with a movable cavity. The inner cavity of the delivery pump 11 is rotatably connected to the spiral blade shaft 13, which is driven by the oil motor 15. Two hydraulic oil pipes 16 pass through the right wall of the frame 1 and can be connected to the hydraulic system on the concrete mixer truck.

[0035] In use, the frame 1 is placed in the discharge area of the concrete truck, and the two hydraulic oil pipes 16 are respectively connected to the inlet and return of the hydraulic system of the concrete truck, so as to drive the oil motor 15 to rotate by hydraulic oil, and the oil motor 15 drives the elastic rod frame 3 to swing left and right, and the U-shaped rod frame 4 to swing forward and backward, so as to control the concrete truck to unload towards the middle of the hopper 2. When the concrete falls on the vibrating elastic rod frame 3, the U-shaped rod frame 4 swings to spread the cement concrete to the front and back sides, so as to quickly control the cement concrete to fall on the dispersion screen and avoid accumulation and overflow. When the U-shaped rod frame 4 swings to push the cement concrete to the front and back sides, part of the components with deep clumping degree are crushed by the crushing plate 61 driven by the adjusting assembly and pressed by the elastic support of the adjusting assembly, so as to quickly process the part of the cement concrete. When there are large stones that are difficult to crush, the stones are pushed and pressed to move outward, and when the U-shaped rod frame 4 swings to the maximum range, the stones are driven to be above the L-shaped screen rod 31, the adjusting assembly automatically controls the crushing plate 61 to move downward, and the stones are pushed downward to fall on the L-shaped screen rod 31 and are separated, so as to stabilize the output flow of the cement concrete, improve the construction efficiency, and ensure the timely and reliable processing of the bad components. A small amount of cement concrete is pushed to fall on the L-shaped screen rod 31, and the L-shaped screen rod 31 vibrates with the elastic rod frame 3, so as to quickly screen the cement concrete to the hopper 2. The components with deep clumping degree that accidentally enter the L-shaped screen rod 31 can also be cracked and dispersed under the action of subsequent continuous vibration, without affecting the collection of the stones, and the cement concrete that falls to the bottom of the hopper 2 automatically falls into the conveying pump 11, is conveyed to the output pipe 12 by the spiral blade shaft 13, and is used for concrete pouring task by the output pipe 12. In addition, the driving assembly and the adjusting assembly are driven by the oil motor 15, so the device does not need to be equipped with an independent power source, is especially suitable for temporary and dispersed small pouring tasks, is convenient to use, and uses the hydraulic system of the truck to drive, so the output power of the concrete is continuous and uniform, the output flow of the concrete is further stabilized, and the construction efficiency is improved.

[0036] In the above embodiment, the elastic rod frame 3 is composed of elastic rod parts on the front and back sides and a plurality of longitudinal rod parts linearly arranged in the middle, and the U-shaped rod frame 4 is composed of clamping block parts on the left and right sides and a plurality of horizontal rod parts linearly arranged in the middle, and the longitudinal rod parts are perpendicular to the horizontal rod parts.

[0037] Through the design, the U-shaped rod frame 4 is convenient for swinging forward and backward to cooperate with the left and right vibration of the elastic rod frame 3 to make the cement concrete dispersed on the screen, and when part of the cement concrete components or sand and stone with deep caking degree are clamped on the elastic rod frame 3, the U-shaped rod frame 4 can push the longitudinal rod part of the elastic rod frame 3 to move forward or backward in parallel to quickly cooperate with the crushing plate 61 to perform extrusion crushing treatment or to be separated and output to the L-shaped screen rod 31, so that the bad components are processed in time and reliably.

[0038] In example three, on the basis of the above examples, the L-shaped screen rod 31 is parallel to the longitudinal rod part in the elastic rod frame 3, the L-shaped screen rod 31 is movably abutted with the inner wall of the hopper 2 and a waste cavity is formed between the L-shaped screen rod 31 and the inner wall of the hopper 2, the cover plate 24 covering the waste cavity is rotatably connected between the two drive bins 21, and the sealing cover 22 is rotatably installed on the top of the drive bin 21.

[0039] Through the design that the L-shaped screen rod 31 is movably abutted with the inner wall of the hopper 2, the collected sand and stone is avoided from directly falling into the hopper 2, through the design of the cover plate 24 and the sealing cover 22, the related cavities can be shielded or sealed when the device is used, so that the cement concrete is avoided from being accidentally poured, and the structure in the related cavities can be conveniently cleaned in the later period, and after the use of the device is completed, the collected sand and stone can be taken out by opening the cover plate 24.

[0040] In example four, on the basis of the above examples, the driving assembly comprises the telescopic spring pipe 5 rotatably connected to the inner wall of the two drive bins 21, the telescopic end of the telescopic spring pipe 5 is movably hinged with the U-shaped rod frame 4, the shaft parts between the two telescopic spring pipes 5 are fixedly connected with the connecting shaft 51 penetrating through the drive bin 21, the right wall of the rotating part of the right telescopic spring pipe 5 is fixedly connected with the pin column one 52, the inner cavity right wall of the right drive bin 21 is rotatably connected with the swing frame 53, the right wall of the right drive bin 21 is rotatably connected with the crank bevel gear 54, the swing frame 53 is movably clamped with the pin column one 52 and the crank bevel gear 54 respectively, the bell crank 55 is rotatably connected between the frame 1 and the conveying pump 11, the transmission bevel gear 14 is fixedly sleeved on the spiral blade shaft 13 in the movable cavity, and the bell crank 55 is meshingly connected with the crank bevel gear 54 and the transmission bevel gear 14 respectively.

[0041] The initial telescopic spring pipe 5 is in a compressed state, when the oil motor 15 drives the spiral blade shaft 13 to rotate, the transmission bevel gear 14 synchronously drives the bell crank 55 to rotate, the bell crank 55 is meshingly driven to rotate the crank bevel gear 54, so as to drive the swing frame 53 to reciprocate and deflect, the swing frame 53 in turn drives the telescopic spring pipe 5 to reciprocate and deflect in a relatively large range by means of the pin column one 52, the telescopic spring pipe 5 is thus adaptively telescopic to drive the U-shaped rod frame 4 to swing forward and backward, so as to flatten and disperse the concrete and push part of the cement concrete components or sand and stone with deep caking degree forward or backward for crushing or separation treatment.

[0042] In the above embodiment, the right end of the elastic rod frame 3 is fixedly connected with a top rod 32 penetrating through the right wall of the hopper 2, a cam 56 is fixedly sleeved on the bevel gear shaft 55 and movably abuts against the top rod 32, and the top end of the top rod 32 is provided with a ball.

[0043] When the bevel gear shaft 55 rotates, the cam 56 is synchronously driven to rotate, and under the elastic action of the elastic rod frame 3, the cam 56 extrudes the top rod 32 to drive the elastic rod frame 3 to reciprocate leftward and rightward to vibrate, so as to cooperate with the U-shaped rod frame 4 to disperse and filter the cement concrete.

[0044] In the above embodiment, the adjusting assembly comprises two tooth barrels 62 symmetrically rotatably connected to the baffle 6, the baffle 6 is slidably connected to the inner wall of the hopper 2, a pin column II 63 is fixedly inserted on the tooth barrel 62, a sliding groove is formed in the side wall of the crushing plate 61 and movably connected to the tooth barrel 62, an elastic tooth column 64 is slidably connected to the tooth barrel 62 and rotatably connected to the inner wall of the hopper 2, L-shaped elastic tooth plates 65 are slidably connected to the front and rear walls of the hopper 2 and meshingly connected to the elastic tooth column 64, a guide groove 66 is formed in the upper wall of the left end of the elastic tooth plate 65, and an L-shaped pin column 41 is fixedly connected to the left end of the U-shaped rod frame 4 and movably connected to the guide groove 66.

[0045] Further, the guide groove 66 is composed of a wavy groove and an inclined groove in communication along the direction away from the L-shaped pin column 41, and the entrance edge of the wavy groove is rounded.

[0046] When the U-shaped rod frame 4 swings forward and backward to push part of the cement concrete components or gravel with relatively large hardness forward or backward, part of the cement concrete components with relatively deep caking degree can be gradually crushed when abutting against the crushing plate 61 by the elastic force of the elastic tooth column 64, and when the U-shaped rod frame 4 approaches the original position of the crushing plate 61, the L-shaped pin column 41 is just inserted into the guide groove 66, so that the elastic tooth plate 65 is slightly moved leftward and rightward under the driving of the wavy groove, the elastic tooth column 64 is driven to slightly reciprocate, the pin column II 63 reciprocatingly extrudes the sliding groove to drive the crushing plate 61 to slightly vibrate up and down, so as to assist in crushing the cement concrete components with relatively deep caking degree, so that they can be reused, and components that are difficult to crush, such as gravel with relatively large volume, are pushed out and extruded against the crushing plate 61 to make the elastic tooth column 64 contract, when the U-shaped rod frame 4 swings to the maximum range and the front end or the rear end slightly exceeds the original position of the baffle 6, the gravel is pushed out and suspended above the L-shaped sieve rod 31, and the L-shaped pin column 41 is just moved from the wavy groove to the inclined groove, so as to drive the elastic tooth plate 65 to greatly move leftward, and the crushing plate 61 is greatly moved downward to push the gravel.

[0047] The outer wall of the crushing plate 61 near the bottom is sawtooth-shaped, and the upper and lower ends of the crushing plate 61 are both provided with inclined surfaces.

[0048] With the jagged design, reliable extrusion and crushing of cement concrete components with deep caking degree is ensured, and the inclined surfaces arranged at the upper and lower ends of the crushing plate 61 ensure stable up-down vibration of the crushing plate 61, avoiding the cement concrete from being clamped at the upper and lower ends of the crushing plate 61, and affecting the vibration effect.

[0049] In the seventh embodiment, on the basis of the above-mentioned embodiments, the adjusting assembly further comprises a tooth frame 73 slidingly connected to the inner wall of the baffle 6, the tooth frame 73 is provided with tooth grooves on the left and right sides, which are engaged with the pin column two 63, the baffle 6 is rotationally connected with a rotating rod 7, the rotating rod 7 is fixedly connected with a magnetic block one 71 at the middle part, the surface of the rotating rod 7 is linearly provided with two spiral grooves 72, the front wall of the tooth frame 73 is fixedly connected with a convex column 74 which is movably connected with the spiral grooves 72, and the inner wall of the hopper 2 is fixedly connected with a magnetic block two 75 which is opposite to the magnetic block one 71 and has the same magnetic pole on the opposite surface.

[0050] When the elastic tooth plate 65 moves leftward and drives the tooth cylinder 62 to deflect greatly, the tooth frame 73 is driven to move rightward greatly, and the convex column 74 drives the spiral grooves 72 to drive the rotating rod 7 to make the magnetic block one 71 overturn to attract the magnetic block two 75, thereby driving the baffle 6 to move outward further to assist the release of the sand and stones.

[0051] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A small ground pump for cement feeding, comprising a frame (1) and a conveying pump (11) installed at the bottom of the inner cavity of the frame (1), characterized in that, The right wall of the conveying pump (11) is equipped with an oil motor (15), and the rear end of the oil motor (15) is provided with two hydraulic oil pipes (16). The upper end of the conveying pump (11) is equipped with a hopper (2) fixedly connected to the frame (1). The top left and right sides of the hopper (2) are provided with drive chambers (21). The front and rear sides of the inner wall of the top of the hopper (2) are fixedly connected with partitions (23). The inner wall of the top of the hopper (2) is slidably inserted with a spring rod frame (3). The bottom of the front and rear ends of the spring rod frame (3) are fixedly connected with several linearly arranged L-shaped screen rods (31). The L-shaped screen rods (31) are parallel to several longitudinal rods in the spring rod frame (3). The L-shaped screen rods (31) are in movable contact with the inner wall of the hopper (2) and a waste cavity is formed between them. The hopper (2) has a U-shaped rod frame (4) slidably inserted into the inner wall of the top. The elastic rod frame (3) is composed of elastic rod parts on the front and rear sides and several longitudinal rod parts arranged linearly in the middle. The U-shaped rod frame (4) is composed of locking parts on the left and right sides and several transverse rod parts arranged linearly in the middle. The longitudinal rod parts and the transverse rod parts are perpendicular to each other. A drive assembly for swinging the elastic rod frame (3) and the U-shaped rod frame (4) is provided between the drive chamber (21) and the conveying pump (11). The elastic rod frame (3) is slidably connected to the partition plate (23) at both ends. The outer wall of the partition plate (6) is slidably engaged with the crushing plate (61). The inner walls of the hopper (2) are provided with elastic support partition plates (6) and adjustment components that drive the crushing plate (61) to move up and down. The adjustment assembly includes two symmetrical toothed cylinders (62) rotatably connected to the baffle (6). The baffle (6) is slidably engaged with the inner wall of the hopper (2). A pin (63) is fixedly inserted into the toothed cylinder (62). A sliding groove is provided on the side wall of the crushing plate (61) to be movably engaged with the toothed cylinder (62). A spring toothed column (64) is slidably engaged in the toothed cylinder (62) and rotatably connected to the inner wall of the hopper (2). An L-shaped spring toothed plate (65) is slidably engaged in the front and rear walls of the hopper (2) and meshes with the spring toothed column (64). A guide groove (66) is provided on the upper left wall of the spring toothed plate (65). An L-shaped pin (41) that can be movably engaged with the guide groove (66) is fixedly connected to the left end of the U-shaped rod frame (4). The guide groove (66) is composed of a wave groove and an inclined groove connected together in the direction away from the L-shaped pin (41), and the inlet edge of the wave groove is rounded. The adjustment assembly also includes a toothed frame (73) slidably connected to the inner wall of the baffle (6). The toothed frame (73) has toothed grooves on its left and right sides that mesh with the pin (63). The inner wall of the baffle (6) is rotatably connected to a rotating rod (7). A magnetic block (71) is fixedly connected to the middle of the rotating rod (7). Two spiral grooves (72) are linearly opened on the surface of the rotating rod (7). A protrusion (74) that is movably engaged with the spiral groove (72) is fixedly connected to the front wall of the toothed frame (73). A magnetic block (75) is fixedly connected to the inner wall of the hopper (2). The magnetic block (75) is opposite to the magnetic block (71) and the magnetic poles of the opposite surfaces are the same.

2. The small ground pump for cement feeding according to claim 1, characterized in that, The left end of the delivery pump (11) is fixedly connected to an output pipe (12). The right side of the delivery pump (11) is provided with a movable cavity. The inner cavity of the delivery pump (11) is rotatably connected to a spiral blade shaft (13). The spiral blade shaft (13) is driven by an oil motor (15). A transmission bevel gear (14) is fixedly sleeved on the spiral blade shaft (13) in the movable cavity. The two hydraulic oil pipes (16) pass through the right wall of the frame (1) and can be connected to the hydraulic system on the concrete mixer truck.

3. A small ground pump for cement feeding according to claim 2, characterized in that, A cover plate (24) covering the waste chamber is rotatably connected between the two drive chambers (21), and a sealing cover (22) is rotatably installed on the top of the drive chamber (21).

4. A small ground pump for cement feeding according to claim 3, characterized in that, The drive assembly includes telescopic spring tubes (5) rotatably connected to the inner walls of the drive chambers (21) on both sides. The telescopic ends of the telescopic spring tubes (5) are movably hinged to the U-shaped frame (4). A connecting shaft (51) passing through the drive chamber (21) is fixedly connected between the shafts of the telescopic spring tubes (5) on both sides. A pin (52) is fixedly connected to the right wall of the rotating part of the telescopic spring tube (5) on the right side. A swing frame (53) is rotatably connected to the right wall of the inner cavity of the drive chamber (21) on the right side. A crank bevel gear (54) is rotatably connected to the right wall of the drive chamber (21) on the right side. The swing frame (53) is movably engaged with the pin (52) and the crank bevel gear (54) respectively. A bevel gear shaft (55) is rotatably connected between the frame (1) and the delivery pump (11). The bevel gear shaft (55) is meshed with the crank bevel gear (54) and the transmission bevel gear (14) respectively.

5. A small ground pump for cement feeding according to claim 4, characterized in that, The elastic rod frame (3) is fixedly connected to the right end of a top rod (32) that passes through the right wall of the hopper (2). A cam (56) that moves and abuts against the top rod (32) is fixedly sleeved on the bevel gear shaft (55). A ball bearing is provided at the top of the top rod (32).

6. A small ground pump for cement feeding according to claim 5, characterized in that, The outer wall of the crushing plate (61) is serrated on the side near the bottom, and both the upper and lower ends of the crushing plate (61) are provided with inclined surfaces.

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